import {
  apiProfileUsageRank,
  filterUsedApiProfiles,
  forgetApiProfileUsage,
  loadApiProfileUsage,
  pruneApiProfileUsage,
  recordApiProfileUsage,
  seedApiProfileUsage,
  sortByApiProfileUsage,
} from "./api-profile-usage.js";
import { readSniffModels, writeSniffModels } from "./model-sniff-cache.js";

let state = {
  settings: { activeProfileId: null, activePresetId: null },
  profiles: [],
  groups: [],
  presets: [],
  personas: [],
  activePersonaId: null,
  creationDefaultId: null,
};

let editingProfileId = null;
/** 当前编辑框里嗅探到的型号，仅用于按 Model 输入筛选 */
let dialogKnownModels = [];
let dialogSniffBase = "";
/** 本次服务进程的启动标记；对不上就不读嗅探缓存 */
let sniffBootId = "";
let sniffRestoreSeq = 0;
/** 组 id → 是否展开显示该组全部配置（默认只显示曾选用）；有搜索词时按匹配显示 */
const showAllProfilesByGroup = new Set();
let profileSearchQuery = "";
let editingPersonaId = null;
let activeSection = "api";
let lastImportedPresetId = null;
/** presetId → entries API payload */
const expandedPresetEntries = new Map();
/** presetId → 当前展开编辑的 entry id（一次一条） */
const openPresetEntryId = new Map();

const profilesListEl = document.getElementById("profiles-list");
const profileSearchEl = document.getElementById("profile-search");
const personasListEl = document.getElementById("personas-list");
const presetsListEl = document.getElementById("presets-list");
const importReportEl = document.getElementById("import-report");
const profileDialog = document.getElementById("profile-dialog");
const profileForm = document.getElementById("profile-form");
const profileDialogTitle = document.getElementById("profile-dialog-title");
const personaDialog = document.getElementById("persona-dialog");
const personaForm = document.getElementById("persona-form");
const personaDialogTitle = document.getElementById("persona-dialog-title");
const presetFileEl = document.getElementById("preset-file");
const panelTitleEl = document.getElementById("panel-title");
const panelSubtitleEl = document.getElementById("panel-subtitle");
const panelActionsEl = document.getElementById("panel-actions");
const sectionApiEl = document.getElementById("section-api");
const sectionPersonaEl = document.getElementById("section-persona");
const sectionPreferenceEl = document.getElementById("section-preference");
const sectionPresetEl = document.getElementById("section-preset");
const sectionStorageEl = document.getElementById("section-storage");
const preferenceCollectEveryEl = document.getElementById("preference-collect-every");
const activeSettingsBarEl = document.getElementById("active-settings-bar");
const settingsToastEl = document.getElementById("settings-toast");
const contextTraceKeepEl = document.getElementById("context-trace-keep");
const probeDialog = document.getElementById("preset-probe-dialog");
const probePresetNameEl = document.getElementById("probe-preset-name");
const probeMessageEl = document.getElementById("probe-message");
const probeLoreBeforeEl = document.getElementById("probe-lore-before");
const probeHistoryEl = document.getElementById("probe-history");
const probeLoreAfterEl = document.getElementById("probe-lore-after");
const probePostTurnEl = document.getElementById("probe-post-turn");
const probeSendEl = document.getElementById("probe-send");
const probeStatusEl = document.getElementById("probe-status");
const probeMessagesEl = document.getElementById("probe-messages");
const probeReplyWrapEl = document.getElementById("probe-reply-wrap");
const probeReplyEl = document.getElementById("probe-reply");

const DEFAULT_PROBE_CONTEXT = {
  message: "我推开门。",
  loreBefore: "写作要求：对本轮输入做忠实扩写；只展开已给出的动作与信息，不另起情节。",
  history: "扩写范围仅限本轮输入，勿补前因后果或无关对话。",
  loreAfter: "",
  postTurn: "",
};

let probingPresetId = null;
let probeBusy = false;

async function api(path, options = {}) {
  const res = await fetch(path, {
    headers: { "Content-Type": "application/json" },
    ...options,
  });
  const data = await res.json();
  if (!res.ok) throw new Error(data.error || "请求失败");
  return data;
}

function escapeHtml(text) {
  return String(text)
    .replace(/&/g, "&")
    .replace(/</g, "&lt;")
    .replace(/>/g, "&gt;");
}

function maskKey(key) {
  if (!key) return "（未设置）";
  if (key.length <= 8) return "****";
  return `${key.slice(0, 4)}…${key.slice(-4)}`;
}

let toastTimer = null;

function showToast(message, isError = false) {
  settingsToastEl.hidden = false;
  settingsToastEl.textContent = message;
  settingsToastEl.classList.toggle("error", isError);
  clearTimeout(toastTimer);
  toastTimer = setTimeout(() => {
    settingsToastEl.hidden = true;
  }, 4000);
}

function renderActiveBar() {
  const profile = state.profiles.find(
    (p) => p.id === state.settings.activeProfileId,
  );
  const preset = state.presets.find(
    (p) => p.id === state.settings.activePresetId,
  );
  const persona = state.personas.find((p) => p.id === state.activePersonaId);

  activeSettingsBarEl.innerHTML = `
    <span class="label">当前生效</span>
    <span class="active-tag ${profile ? "" : "missing"}">
      API: ${profile ? escapeHtml(`${profile.name} · ${profile.model}`) : "未选用"}
    </span>
    <span class="active-tag ${persona ? "" : "missing"}">
      角色: ${persona ? escapeHtml(persona.name) : "未选用"}
    </span>
    <span class="active-tag ${preset ? "" : "missing"}">
      预设: ${preset ? escapeHtml(preset.name) : "未选用"}
    </span>`;
}

function switchSection(section) {
  activeSection = section;
  document.querySelectorAll(".st-rail-item").forEach((el) => {
    el.classList.toggle("active", el.dataset.section === section);
  });
  sectionApiEl.classList.toggle("hidden", section !== "api");
  sectionPersonaEl?.classList.toggle("hidden", section !== "persona");
  sectionPreferenceEl?.classList.toggle("hidden", section !== "preference");
  sectionPresetEl.classList.toggle("hidden", section !== "preset");
  sectionStorageEl?.classList.toggle("hidden", section !== "storage");
  renderPanelHeader();
}

function renderPanelHeader() {
  panelActionsEl.innerHTML = "";
  if (activeSection === "api") {
    panelTitleEl.textContent = "API";
    panelSubtitleEl.textContent =
      "一组一张卡，一行一个型号。添加型号不会改掉已有行，探测也留在原行";
    const btn = document.createElement("button");
    btn.type = "button";
    btn.className = "btn-primary";
    btn.textContent = "新增";
    btn.addEventListener("click", () => openProfileDialog());
    panelActionsEl.appendChild(btn);
  } else if (activeSection === "persona") {
    panelTitleEl.textContent = "用户角色";
    panelSubtitleEl.textContent =
      "游玩用当前选用；创作用「创作默认」（建议名为 @玩家）";
    const btn = document.createElement("button");
    btn.type = "button";
    btn.className = "btn-primary";
    btn.textContent = "新增";
    btn.addEventListener("click", () => openPersonaDialog());
    panelActionsEl.appendChild(btn);
  } else if (activeSection === "preference") {
    panelTitleEl.textContent = "用户偏好";
    panelSubtitleEl.textContent = "采集间隔；条目在「库 · 偏好库」管理";
  } else if (activeSection === "preset") {
    panelTitleEl.textContent = "预设";
    panelSubtitleEl.textContent =
      "导入后可启用/编辑条目；选用后注入全部 LLM 请求。再点「使用中」即不使用任何预设";
    const btn = document.createElement("button");
    btn.type = "button";
    btn.className = "btn-primary";
    btn.textContent = "导入 JSON";
    btn.addEventListener("click", () => presetFileEl.click());
    panelActionsEl.appendChild(btn);
  } else {
    panelTitleEl.textContent = "上下文";
    panelSubtitleEl.textContent = "控制每个对话保留多少条完整 prompt 痕迹";
  }
}

function activateButtonHtml(active, id, action, { toggleOff = false } = {}) {
  if (active && toggleOff) {
    return `<button type="button" class="btn-active-label is-toggle" data-action="${action}" data-id="${id}" title="再点一次即不使用预设">✓ 使用中</button>`;
  }
  if (active) {
    return `<button type="button" class="btn-active-label" disabled>✓ 使用中</button>`;
  }
  return `<button type="button" class="btn-activate" data-action="${action}" data-id="${id}">选用并生效</button>`;
}

function capabilityBadge(caps) {
  if (!caps || !caps.testedAt) {
    return `<div class="config-card-meta cap-unknown">能力：未探测（选用前建议点「探测」）</div>`;
  }
  const bit = (label, status) => {
    const cls =
      status === "ok" ? "cap-ok" : status === "fail" ? "cap-fail" : "cap-unk";
    return `<span class="cap-chip ${cls}">${escapeHtml(label)}:${escapeHtml(status)}</span>`;
  };
  const mode =
    caps.jsonSchema === "ok"
      ? "JSON Schema"
      : caps.forcedTool === "ok"
        ? "强制 Tool"
        : caps.jsonObject === "ok"
          ? "JSON Object"
          : "纯文本";
  return `<div class="config-card-meta cap-row">
    投递：<strong>${escapeHtml(mode)}</strong>
    ${bit("schema", caps.jsonSchema)}
    ${bit("tool", caps.forcedTool)}
    ${bit("json", caps.jsonObject)}
  </div>`;
}

function escapeAttr(text) {
  return escapeHtml(text).replace(/"/g, "&quot;");
}

function profileMatchesQuery(profile, group, query) {
  if (!query) return true;
  const hay = [
    group?.name,
    group?.baseUrl,
    profile.name,
    profile.model,
    profile.baseUrl,
    profile.reasoningEffort,
  ]
    .map((part) => String(part || "").toLowerCase())
    .join("\n");
  return hay.includes(query);
}

function capabilityLine(caps) {
  if (!caps || !caps.testedAt) {
    return `<span class="cap-unknown">能力未探测</span>`;
  }
  const mode =
    caps.jsonSchema === "ok"
      ? "JSON Schema"
      : caps.forcedTool === "ok"
        ? "强制 Tool"
        : caps.jsonObject === "ok"
          ? "JSON Object"
          : "纯文本";
  return `投递 ${escapeHtml(mode)}`;
}

function renderModelRow(p) {
  const active = p.id === state.settings.activeProfileId;
  const used = Boolean(loadApiProfileUsage()[p.id]);
  const row = document.createElement("div");
  row.className = `profile-model-row${active ? " is-active" : ""}`;
  const metaParts = [
    p.name && p.name !== p.model ? p.name : "",
    p.reasoningEffort ? `思考 ${p.reasoningEffort}` : "",
  ].filter(Boolean);
  const forget = !active && used
    ? `<button type="button" data-action="forget-usage" data-id="${escapeAttr(p.id)}" title="移出曾用记录，配置仍保留">移出曾用</button>`
    : "";
  row.innerHTML = `
    <div class="profile-model-row-main">
      <div class="profile-model-row-title">
        <span>${escapeHtml(p.model || p.name || "未命名")}</span>
        ${active ? '<span class="badge">当前</span>' : ""}
      </div>
      <div class="profile-model-row-meta">
        ${metaParts.length ? `${escapeHtml(metaParts.join(" · "))} · ` : ""}
        ${capabilityLine(p.capabilities)}
      </div>
      <div class="test-result" id="test-${escapeAttr(p.id)}"></div>
    </div>
    <div class="profile-model-row-actions">
      ${activateButtonHtml(active, p.id, "activate-profile")}
      <button type="button" data-action="edit-profile" data-id="${escapeAttr(p.id)}">编辑</button>
      <button type="button" data-action="probe-capabilities" data-id="${escapeAttr(p.id)}">探测</button>
      ${forget}
      <button type="button" class="btn-danger" data-action="delete-profile" data-id="${escapeAttr(p.id)}">删除</button>
    </div>`;
  return row;
}

function visibleGroupMembers(members, group, usage, activeId) {
  const query = profileSearchQuery.trim().toLowerCase();
  const showAll = showAllProfilesByGroup.has(group.id) || Boolean(query);
  let list = showAll
    ? sortByApiProfileUsage(members, (profile) =>
        apiProfileUsageRank(profile.id, usage),
      )
    : filterUsedApiProfiles(members, usage, activeId);
  if (query) {
    list = list.filter((profile) => profileMatchesQuery(profile, group, query));
  }
  return { list, showAll, query };
}

function renderProfiles() {
  profilesListEl.innerHTML = "";
  if (!state.profiles.length) {
    profilesListEl.innerHTML =
      '<p class="empty-hint">暂无配置，点击右上角「新增配置」。</p>';
    return;
  }

  const usage = loadApiProfileUsage();
  const activeId = state.settings.activeProfileId;
  const query = profileSearchQuery.trim().toLowerCase();
  const groups = state.groups.length
    ? state.groups
    : [{ id: "", name: "未分组", baseUrl: "" }];
  const seen = new Set();
  let shownGroups = 0;

  for (const group of groups) {
    const members = state.profiles.filter((p) => (p.groupId || "") === group.id);
    if (!members.length) continue;
    for (const member of members) seen.add(member.id);

    const { list: visible, showAll } = visibleGroupMembers(
      members,
      group,
      usage,
      activeId,
    );
    if (query && !visible.length) continue;

    const hasActive = members.some((p) => p.id === activeId);
    const sample = members[0];
    const hidden = members.length - visible.length;
    const countLabel = query
      ? `匹配 ${visible.length} / ${members.length}`
      : showAll
        ? `${members.length} 个模型`
        : hidden > 0
          ? `曾用 ${visible.length} / 共 ${members.length}`
          : `${members.length} 个模型`;
    const toggle =
      !query && members.length > 1
        ? `<button
            type="button"
            class="profile-group-toggle"
            data-action="toggle-group-all"
            data-id="${escapeAttr(group.id)}"
          >${showAll ? "只看曾用" : "显示全部"}</button>`
        : "";

    const card = document.createElement("section");
    card.className = `config-card profile-group-card${hasActive ? " active" : ""}`;
    card.innerHTML = `
      <div class="profile-group-card-head">
        <div class="config-card-icon api">${escapeHtml(
          (group.name || "G").charAt(0).toUpperCase(),
        )}</div>
        <div class="profile-group-card-info">
          <div class="profile-group-card-title-row">
            <label class="profile-group-name">
              <span class="visually-hidden">组名</span>
              <input
                type="text"
                data-action="rename-group"
                data-id="${escapeAttr(group.id)}"
                value="${escapeAttr(group.name)}"
                aria-label="组名"
                ${group.id ? "" : "disabled"}
              />
            </label>
            ${hasActive ? '<span class="badge">当前组</span>' : ""}
            <span class="profile-group-count">${escapeHtml(countLabel)}</span>
            ${toggle}
            ${
              group.id
                ? `<button type="button" class="profile-group-toggle" data-action="add-model" data-id="${escapeAttr(group.id)}">添加型号</button>`
                : ""
            }
          </div>
          <div class="profile-group-meta">
            ${escapeHtml(group.baseUrl || sample?.baseUrl || "")}
            ${sample ? ` · Key: ${escapeHtml(maskKey(sample.apiKey))}` : ""}
          </div>
        </div>
      </div>`;

    if (!visible.length) {
      const empty = document.createElement("p");
      empty.className = "profile-group-empty";
      empty.textContent = query
        ? "没有匹配的模型"
        : "本组还没有曾选用过的型号。点「显示全部」，或「添加型号」。";
      card.appendChild(empty);
    } else {
      const rows = document.createElement("div");
      rows.className = "profile-model-rows";
      for (const p of visible) rows.appendChild(renderModelRow(p));
      card.appendChild(rows);
    }

    profilesListEl.appendChild(card);
    shownGroups += 1;
  }

  const loose = state.profiles.filter((p) => !seen.has(p.id));
  const looseVisible = query
    ? loose.filter((p) => profileMatchesQuery(p, { name: "未分组" }, query))
    : loose;
  if (looseVisible.length) {
    const card = document.createElement("section");
    card.className = "config-card profile-group-card";
    card.innerHTML = `
      <div class="profile-group-card-head">
        <div class="config-card-icon api">?</div>
        <div class="profile-group-card-info">
          <div class="profile-group-card-title-row">
            <strong>未分组</strong>
            <span class="profile-group-count">${looseVisible.length} 个模型</span>
          </div>
        </div>
      </div>`;
    const rows = document.createElement("div");
    rows.className = "profile-model-rows";
    for (const p of looseVisible) rows.appendChild(renderModelRow(p));
    card.appendChild(rows);
    profilesListEl.appendChild(card);
    shownGroups += 1;
  }

  if (!shownGroups) {
    profilesListEl.innerHTML = query
      ? `<p class="empty-hint">没有匹配「${escapeHtml(profileSearchQuery.trim())}」的配置。</p>`
      : '<p class="empty-hint">暂无配置，点击右上角「新增配置」。</p>';
  }
}

function renderPresets() {
  presetsListEl.innerHTML = "";
  if (!state.presets.length) {
    presetsListEl.innerHTML =
      '<p class="empty-hint">暂无预设，点击右上角「导入 JSON」。</p>';
    return;
  }

  for (const p of state.presets) {
    const active = p.id === state.settings.activePresetId;
    const expanded = expandedPresetEntries.get(p.id);
    const card = document.createElement("div");
    card.className = `config-card${active ? " active" : ""}`;
    card.innerHTML = `
      <div class="config-card-head">
        <div class="config-card-icon preset">P</div>
        <div class="config-card-info">
          <div class="config-card-title">
            ${escapeHtml(p.name)}
            ${active ? '<span class="badge">当前</span>' : ""}
          </div>
          <div class="config-card-meta">
            ${escapeHtml(p.source)} · 共 ${p.entryCount ?? "?"} 条
            · 启用 ${p.enabledCount} · 注入 ${p.injectingCount ?? "?"}
            · ${escapeHtml(p.importedAt?.slice(0, 10) ?? "")}
          </div>
        </div>
      </div>
      <div class="config-card-actions">
        ${activateButtonHtml(active, p.id, "activate-preset", { toggleOff: true })}
        <button type="button" data-action="probe-preset" data-id="${p.id}">试跑</button>
        <button type="button" data-action="toggle-preset-entries" data-id="${p.id}">
          ${expanded ? "收起条目" : "编辑条目"}
        </button>
        <button type="button" class="btn-danger" data-action="delete-preset" data-id="${p.id}">删除</button>
      </div>
      <div class="preset-entries-panel" id="preset-entries-${p.id}" ${expanded ? "" : "hidden"}></div>`;
    presetsListEl.appendChild(card);
    if (expanded) {
      renderPresetEntriesPanel(p.id, expanded);
    }
  }
}

const GENERATION_FIELDS = [
  { key: "temperature", label: "temperature", step: "0.01", placeholder: "如 1" },
  { key: "topP", label: "top P", step: "0.01", placeholder: "如 0.95" },
  { key: "topK", label: "top K", step: "1", placeholder: "可选" },
  { key: "minP", label: "min P", step: "0.01", placeholder: "可选" },
  {
    key: "frequencyPenalty",
    label: "frequency penalty",
    step: "0.01",
    placeholder: "可选",
  },
  {
    key: "presencePenalty",
    label: "presence penalty",
    step: "0.01",
    placeholder: "可选",
  },
  {
    key: "repetitionPenalty",
    label: "repetition penalty",
    step: "0.01",
    placeholder: "可选",
  },
  {
    key: "maxContextTokens",
    label: "最大上下文",
    step: "1",
    placeholder: "输入预算",
  },
  {
    key: "maxOutputTokens",
    label: "最大输出",
    step: "1",
    placeholder: "如 60000",
  },
  { key: "seed", label: "seed", step: "1", placeholder: "可选" },
  {
    key: "variants",
    label: "n / variants",
    step: "1",
    placeholder: "可选",
  },
];

function generationFieldValue(gen, key) {
  const v = gen?.[key];
  return v === undefined || v === null ? "" : String(v);
}

function renderGenerationForm(gen) {
  const g = gen ?? {};
  const numberFields = GENERATION_FIELDS.map(
    (f) => `
      <label class="entry-field gen-field">
        ${escapeHtml(f.label)}
        <input
          type="number"
          class="entry-name-input"
          data-gen-field="${escapeHtml(f.key)}"
          step="${escapeHtml(f.step)}"
          placeholder="${escapeHtml(f.placeholder)}"
          value="${escapeHtml(generationFieldValue(g, f.key))}"
        />
      </label>`,
  ).join("");

  return `
    <div class="preset-gen-editor">
      <div class="preset-gen-head">
        <strong>生成参数</strong>
        <span class="preset-gen-hint">上半 · 采样与容量；空字段表示不发送</span>
      </div>
      <div class="preset-gen-grid">
        ${numberFields}
        <label class="entry-field gen-field">
          verbosity
          <input
            type="text"
            class="entry-name-input"
            data-gen-field="verbosity"
            placeholder="可选"
            value="${escapeHtml(generationFieldValue(g, "verbosity"))}"
          />
        </label>
        <label class="entry-field gen-field gen-field-check">
          <span>stream</span>
          <input
            type="checkbox"
            data-gen-field="stream"
            ${g.stream === true ? "checked" : ""}
          />
        </label>
      </div>
      <div class="preset-gen-actions">
        <button type="button" class="btn-primary" data-action="save-generation">保存生成参数</button>
      </div>
    </div>`;
}

function collectGenerationFromPanel(panel) {
  const generation = {};
  for (const input of panel.querySelectorAll("[data-gen-field]")) {
    const key = input.dataset.genField;
    if (!key) continue;
    if (input.type === "checkbox") {
      if (input.checked) generation.stream = true;
      continue;
    }
    const raw = input.value.trim();
    if (!raw) continue;
    if (key === "verbosity") {
      generation[key] = raw;
    } else {
      const n = Number(raw);
      if (Number.isFinite(n)) generation[key] = n;
    }
  }
  return generation;
}

function renderPresetEntriesPanel(presetId, data) {
  const panel = document.getElementById(`preset-entries-${presetId}`);
  if (!panel || !data) return;

  const openId = openPresetEntryId.get(presetId) ?? null;

  const entriesHtml = data.entries
    .map((entry, idx) => {
      const roleClass = `role-${entry.role}`;
      const open = openId === entry.id;
      const preview = (entry.content || "").trim();
      const previewText = preview
        ? preview.length > 72
          ? `${preview.slice(0, 72)}…`
          : preview
        : entry.marker
          ? "（marker · 无正文）"
          : "（空）";
      const status = entry.enabled
        ? entry.willInject
          ? '<span class="entry-skip ok">将注入</span>'
          : '<span class="entry-skip">已启用 · 不注入</span>'
        : '<span class="entry-skip">未启用</span>';

      return `
        <article class="preset-entry ${entry.enabled ? "" : "disabled"} ${open ? "is-open" : ""}" data-entry-id="${escapeHtml(entry.id)}">
          <header class="preset-entry-head" data-action="expand-entry" data-id="${escapeHtml(entry.id)}" role="button" tabindex="0" aria-expanded="${open}">
            <label class="entry-enable" title="启用后才会注入请求" data-stop-expand>
              <input type="checkbox" data-action="toggle-entry" data-id="${escapeHtml(entry.id)}" ${entry.enabled ? "checked" : ""} />
              <span>启用</span>
            </label>
            <span class="entry-index">${idx + 1}</span>
            <span class="entry-role ${roleClass}">${escapeHtml(entry.role)}</span>
            <span class="entry-name">${escapeHtml(entry.name)}</span>
            ${status}
            <span class="entry-chevron" aria-hidden="true">${open ? "▾" : "▸"}</span>
          </header>
          ${open
            ? ""
            : `<p class="entry-preview" data-action="expand-entry" data-id="${escapeHtml(entry.id)}">${escapeHtml(previewText)}</p>`}
          <div class="preset-entry-body" ${open ? "" : "hidden"}>
            <label class="entry-field">
              名称
              <input class="entry-name-input" type="text" data-field="name" value="${escapeHtml(entry.name)}" />
            </label>
            <label class="entry-field">
              正文
              <textarea class="preset-entry-editor" data-field="content" rows="${Math.min(14, Math.max(4, (entry.content || "").split("\n").length + 1))}" placeholder="空则即使启用也不注入">${escapeHtml(entry.content || "")}</textarea>
            </label>
            <div class="preset-entry-actions">
              <button type="button" class="btn-secondary" data-action="collapse-entry" data-id="${escapeHtml(entry.id)}">收起</button>
              <button type="button" class="btn-primary" data-action="save-entry" data-id="${escapeHtml(entry.id)}">保存此条</button>
            </div>
          </div>
        </article>`;
    })
    .join("");

  panel.innerHTML = `
    <div class="preset-entries-inner" data-preset-id="${escapeHtml(presetId)}">
      ${renderGenerationForm(data.generation)}
      <p class="preset-entries-summary">下半 · 共 ${data.entries.length} 条 · 启用 ${data.enabledCount ?? 0} · 注入 ${data.injectingCount ?? 0}。点条目展开编辑；启用开关即时保存。</p>
      ${entriesHtml || '<p class="empty-hint">无条目</p>'}
    </div>`;
}

async function refreshPresetEntries(presetId) {
  const data = await api(`/api/presets/${encodeURIComponent(presetId)}/entries`);
  expandedPresetEntries.set(presetId, data);
  // 同步卡片上的计数
  const cardMeta = state.presets.find((p) => p.id === presetId);
  if (cardMeta) {
    cardMeta.enabledCount = data.enabledCount;
    cardMeta.injectingCount = data.injectingCount;
    cardMeta.entryCount = data.entries?.length;
  }
  renderPresets();
}

async function togglePresetEntries(presetId) {
  if (expandedPresetEntries.has(presetId)) {
    expandedPresetEntries.delete(presetId);
    openPresetEntryId.delete(presetId);
    renderPresets();
    return;
  }
  await refreshPresetEntries(presetId);
}

async function patchPresetEntry(presetId, patch) {
  const data = await api(`/api/presets/${encodeURIComponent(presetId)}/entries`, {
    method: "PATCH",
    body: JSON.stringify({ entry: patch }),
  });
  expandedPresetEntries.set(presetId, data);
  const cardMeta = state.presets.find((p) => p.id === presetId);
  if (cardMeta) {
    cardMeta.enabledCount = data.enabledCount;
    cardMeta.injectingCount = data.injectingCount;
    cardMeta.entryCount = data.entries?.length;
  }
  renderPresets();
  const n = data.reloadedSessions ?? 0;
  showToast(
    n > 0
      ? `已保存，并热更新 ${n} 个会话`
      : "已保存（选用此预设后才会进入请求）",
  );
  return data;
}

async function patchPresetGeneration(presetId, generation) {
  const data = await api(`/api/presets/${encodeURIComponent(presetId)}/entries`, {
    method: "PATCH",
    body: JSON.stringify({ generation }),
  });
  expandedPresetEntries.set(presetId, data);
  renderPresets();
  const n = data.reloadedSessions ?? 0;
  showToast(
    n > 0
      ? `生成参数已保存，并热更新 ${n} 个会话`
      : "生成参数已保存（选用此预设后才会进入请求）",
  );
  return data;
}

async function loadAll() {
  const data = await api("/api/settings");
  state.settings = data.settings;
  state.profiles = data.profiles;
  state.groups = data.groups || [];
  pruneApiProfileUsage(new Set(state.profiles.map((p) => p.id)));
  seedApiProfileUsage(state.settings.activeProfileId);
  state.presets = data.presets;
  sniffBootId = typeof data.bootId === "string" ? data.bootId : "";
  try {
    const personasData = await api("/api/personas");
    state.personas = personasData.personas ?? [];
    state.activePersonaId = personasData.activeId ?? null;
    state.creationDefaultId = personasData.creationDefaultId ?? null;
  } catch {
    state.personas = [];
    state.activePersonaId = null;
  }
  try {
    const prefData = await api("/api/preferences");
    if (preferenceCollectEveryEl) {
      preferenceCollectEveryEl.value = String(
        prefData.preferenceCollectEveryTurns ??
          state.settings.preferenceCollectEveryTurns ??
          10,
      );
    }
  } catch {
    /* ignore */
  }
  if (contextTraceKeepEl) {
    contextTraceKeepEl.value = String(
      state.settings.contextTraceKeepLatest ?? 5,
    );
  }
  renderActiveBar();
  renderProfiles();
  renderPersonas();
  renderPresets();
}

function renderPersonas() {
  if (!personasListEl) return;
  personasListEl.innerHTML = "";
  if (!state.personas.length) {
    personasListEl.innerHTML =
      `<div class="empty-hint">还没有用户角色。点右上角「新增」。</div>`;
    return;
  }
  for (const p of state.personas) {
    const active = p.id === state.activePersonaId;
    const creationDefault = p.id === state.creationDefaultId;
    const card = document.createElement("div");
    card.className = `config-card persona-config-card${active ? " is-active" : ""}`;
    const desc = (p.description || "").trim();
    card.innerHTML = `
      <div class="config-card-head">
        <div>
          <div class="config-card-title">${escapeHtml(p.name)}${
            creationDefault ? `<span class="badge">创作默认</span>` : ""
          }</div>
          <div class="config-card-meta">${
            desc
              ? escapeHtml(desc.slice(0, 80)) + (desc.length > 80 ? "…" : "")
              : "（无人设正文）"
          }</div>
        </div>
        ${activateButtonHtml(active, p.id, "activate-persona")}
      </div>
      <div class="config-card-actions">
        <label class="persona-card-check">
          <input type="checkbox" data-action="creation-default" data-id="${escapeHtml(p.id)}"${
            creationDefault ? " checked" : ""
          } />
          创作默认
        </label>
        <button type="button" class="btn-secondary" data-action="edit-persona" data-id="${escapeHtml(p.id)}">编辑</button>
        <button type="button" class="btn-secondary danger-outline" data-action="delete-persona" data-id="${escapeHtml(p.id)}">删除</button>
      </div>`;
    personasListEl.appendChild(card);
  }
}

function openPersonaDialog(persona = null) {
  editingPersonaId = persona?.id ?? null;
  personaDialogTitle.textContent = persona ? "编辑用户角色" : "新增用户角色";
  personaForm.name.value = persona?.name ?? "";
  personaForm.description.value = persona?.description ?? "";
  personaForm.creationDefault.checked = persona
    ? persona.id === state.creationDefaultId
    : false;
  personaDialog.showModal();
}

async function savePersona() {
  const payload = {
    name: personaForm.name.value,
    description: personaForm.description.value,
    activate: true,
    creationDefault: Boolean(personaForm.creationDefault?.checked),
  };
  if (editingPersonaId) {
    await api(`/api/personas/${encodeURIComponent(editingPersonaId)}`, {
      method: "PUT",
      body: JSON.stringify(payload),
    });
    await api(`/api/personas/${encodeURIComponent(editingPersonaId)}/activate`, {
      method: "POST",
    });
  } else {
    await api("/api/personas", {
      method: "POST",
      body: JSON.stringify(payload),
    });
  }
  personaDialog.close();
  await loadAll();
  showToast("用户角色已保存");
}

const profileModelLockEl = document.getElementById("profile-model-lock");
const profileModelLockValueEl = document.getElementById("profile-model-lock-value");
const profileModelEditorEl = document.getElementById("profile-model-editor");
const profileModelFilterEl = document.getElementById("profile-model-filter");
const addModelDialog = document.getElementById("add-model-dialog");
const addModelGroupEl = document.getElementById("add-model-group");
const addModelFilterEl = document.getElementById("add-model-filter");
const addModelStatusEl = document.getElementById("add-model-status");
const addModelListEl = document.getElementById("add-model-list");
const addModelEmptyEl = document.getElementById("add-model-empty");
const addModelSniffBtn = document.getElementById("add-model-sniff");
let addModelSource = null;
let addKnownModels = [];
let addSniffBase = "";
let addSniffSeq = 0;
const profileSniffStatusEl = document.getElementById("profile-sniff-status");
const profileModelPickEl = document.getElementById("profile-model-pick");
const profileModelListEl = document.getElementById("profile-model-list");
const profileModelEmptyEl = document.getElementById("profile-model-empty");
const profileSniffBtn = document.getElementById("profile-sniff");
const MODEL_MATCH_LIMIT = 48;

function setSniffStatus(el, message, isError = false) {
  if (!el) return;
  el.hidden = !message;
  el.textContent = message || "";
  el.classList.toggle("is-error", Boolean(isError));
}

function uniqueModelIds(ids) {
  const list = [];
  const seen = new Set();
  for (const raw of ids) {
    const id = String(raw ?? "").trim();
    if (!id || seen.has(id)) continue;
    seen.add(id);
    list.push(id);
  }
  return list;
}

function normalizeBaseUrlKey(url) {
  return String(url || "")
    .trim()
    .replace(/\/+$/, "")
    .toLowerCase();
}

/** 同一 Base URL + 同一 Key 共用一份缓存。Key 只存指纹，不存原文。 */
async function sniffCacheKeyFor({ baseUrl, apiKey, profileId, groupId }) {
  const base = normalizeBaseUrlKey(baseUrl);
  if (!base) return "";
  const typed = String(apiKey || "").trim();
  if (typed) return `${base}\nkey:${await apiKeyFingerprint(typed)}`;
  const ident = groupId || profileId || "";
  return ident ? `${base}\ngroup:${ident}` : "";
}

function createSniffContext() {
  const profile = state.profiles.find((item) => item.id === editingProfileId);
  return {
    baseUrl: profileForm.baseUrl.value,
    apiKey: profileForm.apiKey.value,
    profileId: editingProfileId || "",
    groupId: profile?.groupId || "",
  };
}

function addSniffContext() {
  return {
    baseUrl: addModelSource?.baseUrl || "",
    apiKey: addModelSource?.apiKey || "",
    profileId: addModelSource?.id || "",
    groupId: addModelSource?.groupId || "",
  };
}

function modelsForBase(baseUrl) {
  const base = normalizeBaseUrlKey(baseUrl);
  return uniqueModelIds(
    state.profiles
      .filter((profile) => normalizeBaseUrlKey(profile.baseUrl) === base)
      .map((profile) => profile.model),
  );
}

function renderModelCatalog(listEl, emptyEl, { query, chosen, catalog, existing, sniffed = 0, idleEmpty = "先嗅探。输入关键词后，点一条填入完整型号。" }) {
  if (!listEl || !emptyEl) return;
  const text = query.trim();
  const needle = text.toLowerCase();
  if (!needle) {
    listEl.hidden = true;
    listEl.innerHTML = "";
    emptyEl.hidden = false;
    emptyEl.textContent = sniffed
      ? `已有 ${sniffed} 个嗅探结果。输入关键词筛选，例如 gemini。`
      : idleEmpty;
    return;
  }
  const matched = catalog.filter((model) => model.toLowerCase().includes(needle));
  const more = Math.max(0, matched.length - MODEL_MATCH_LIMIT);
  const shown = matched.slice(0, MODEL_MATCH_LIMIT);
  listEl.hidden = shown.length === 0;
  listEl.innerHTML = shown
    .map((model) => {
      const on = model === chosen;
      const owned = existing?.has(model) ? " · 已有" : "";
      return `<button
        type="button"
        class="model-pick-item${on ? " is-current" : ""}"
        data-pick-model="${escapeAttr(model)}"
        role="option"
        aria-selected="${on ? "true" : "false"}"
      >${escapeHtml(model)}${owned}</button>`;
    })
    .join("");
  emptyEl.hidden = shown.length > 0 && more === 0;
  if (!shown.length) {
    emptyEl.textContent = catalog.length
      ? `没有名称包含「${text}」的型号`
      : "还没有可筛选的型号。先嗅探，再输入关键词。";
  } else if (more) {
    emptyEl.textContent = `还有 ${more} 个，继续输入以缩小`;
  }
}

function renderCreateModelChoices() {
  const base = normalizeBaseUrlKey(profileForm.baseUrl.value);
  const catalog =
    dialogSniffBase === base
      ? uniqueModelIds([...modelsForBase(base), ...dialogKnownModels])
      : modelsForBase(base);
  renderModelCatalog(profileModelListEl, profileModelEmptyEl, {
    query: profileModelFilterEl?.value || "",
    chosen: profileForm.model.value.trim(),
    catalog,
    sniffed: dialogSniffBase === base ? dialogKnownModels.length : 0,
  });
}

function renderAddModelChoices() {
  const base = normalizeBaseUrlKey(addModelSource?.baseUrl || "");
  const catalog =
    addSniffBase === base
      ? uniqueModelIds([...modelsForBase(base), ...addKnownModels])
      : modelsForBase(base);
  renderModelCatalog(addModelListEl, addModelEmptyEl, {
    query: addModelFilterEl?.value || "",
    chosen: "",
    catalog,
    sniffed: addSniffBase === base ? addKnownModels.length : 0,
    idleEmpty: "先嗅探。输入关键词后，点一条就会新开一行并选用。",
    existing: new Set(
      state.profiles
        .filter((profile) => (profile.groupId || "") === (addModelSource?.groupId || ""))
        .map((profile) => profile.model),
    ),
  });
}

async function restoreCreateSniffCache() {
  const seq = ++sniffRestoreSeq;
  const ctx = createSniffContext();
  const base = normalizeBaseUrlKey(ctx.baseUrl);
  const cacheKey = await sniffCacheKeyFor(ctx);
  if (seq !== sniffRestoreSeq) return;
  const models = uniqueModelIds(readSniffModels(sniffBootId, cacheKey));
  dialogSniffBase = models.length ? base : "";
  dialogKnownModels = models;
  setSniffStatus(
    profileSniffStatusEl,
    models.length
      ? `沿用本次启动的嗅探结果（${models.length} 个），重启程序后会清空。`
      : "",
  );
  renderCreateModelChoices();
}

async function restoreAddSniffCache() {
  const seq = ++addSniffSeq;
  const ctx = addSniffContext();
  const base = normalizeBaseUrlKey(ctx.baseUrl);
  const cacheKey = await sniffCacheKeyFor(ctx);
  if (seq !== addSniffSeq) return;
  const models = uniqueModelIds(readSniffModels(sniffBootId, cacheKey));
  addSniffBase = models.length ? base : "";
  addKnownModels = models;
  setSniffStatus(
    addModelStatusEl,
    models.length
      ? `沿用本次启动的嗅探结果（${models.length} 个），重启程序后会清空。`
      : "",
  );
  renderAddModelChoices();
}

function setProfileModelMode(profile) {
  const editing = Boolean(profile);
  if (profileModelLockEl) profileModelLockEl.hidden = !editing;
  if (profileModelEditorEl) profileModelEditorEl.hidden = editing;
  if (profileModelLockValueEl) {
    profileModelLockValueEl.textContent = profile?.model || "";
  }
  if (profileForm.model) profileForm.model.disabled = editing;
}

function openProfileDialog(profile = null) {
  editingProfileId = profile?.id ?? null;
  profileDialogTitle.textContent = profile ? "编辑这一行" : "新增 API";
  profileForm.name.value = profile?.name ?? "";
  profileForm.baseUrl.value = profile?.baseUrl ?? "https://api.deepseek.com/v1";
  profileForm.apiKey.value = profile?.apiKey ?? "";
  profileForm.model.value = profile ? profile.model : "";
  profileForm.reasoningEffort.value = profile?.reasoningEffort ?? "";
  if (profileModelFilterEl) profileModelFilterEl.value = "";
  dialogKnownModels = [];
  dialogSniffBase = "";
  setSniffStatus(profileSniffStatusEl, "");
  setProfileModelMode(profile);
  renderCreateModelChoices();
  profileDialog.showModal();
  if (!profile) void restoreCreateSniffCache();
}

async function apiKeyFingerprint(apiKey) {
  const data = new TextEncoder().encode(apiKey.trim());
  const buf = await crypto.subtle.digest("SHA-256", data);
  return [...new Uint8Array(buf)]
    .slice(0, 8)
    .map((byte) => byte.toString(16).padStart(2, "0"))
    .join("");
}

async function saveProfile(activate) {
  const model = profileForm.model.value.trim();
  if (!editingProfileId && !model) {
    showToast("先填写完整型号，或从筛选结果里点一条", true);
    return;
  }
  const payload = {
    name: profileForm.name.value,
    baseUrl: profileForm.baseUrl.value,
    reasoningEffort: profileForm.reasoningEffort.value,
    activate,
  };
  if (!editingProfileId) payload.model = model;
  const apiKey = profileForm.apiKey.value.trim();
  if (apiKey || !editingProfileId) {
    payload.apiKey = apiKey;
  }

  let result;
  if (editingProfileId) {
    result = await api(`/api/profiles/${editingProfileId}`, {
      method: "PUT",
      body: JSON.stringify(payload),
    });
    const savedId = result.profile?.id || editingProfileId;
    if (activate) {
      const activated = await api(`/api/profiles/${encodeURIComponent(savedId)}/activate`, {
        method: "POST",
      });
      result = { ...result, ...activated, profile: result.profile };
    }
  } else {
    result = await api("/api/profiles", {
      method: "POST",
      body: JSON.stringify(payload),
    });
  }

  profileDialog.close();
  const savedId = result.profile?.id || editingProfileId || result.activeProfileId;
  if (activate && savedId) recordApiProfileUsage(savedId);
  await loadAll();

  if (activate) {
    const n = result.reloadedSessions ?? 0;
    showToast(`已选用并生效${n > 0 ? `，已更新 ${n} 个活跃会话` : ""}`);
  } else {
    showToast("已保存。点击「选用并生效」后才会用于 LLM 请求。");
  }
}

async function activateProfile(id) {
  const result = await api(`/api/profiles/${id}/activate`, { method: "POST" });
  recordApiProfileUsage(id);
  await loadAll();
  const n = result.reloadedSessions ?? 0;
  showToast(`API 配置已生效${n > 0 ? `（${n} 个会话已更新）` : ""}`);
}

async function activatePreset(id) {
  const result = await api(`/api/presets/${id}/activate`, { method: "POST" });
  await loadAll();
  const n = result.reloadedSessions ?? 0;
  showToast(`预设已生效${n > 0 ? `（${n} 个会话已更新）` : ""}`);
}

async function deactivatePreset() {
  const result = await api("/api/presets/deactivate", { method: "POST" });
  await loadAll();
  const n = result.reloadedSessions ?? 0;
  showToast(`已不使用预设${n > 0 ? `（${n} 个会话已更新）` : ""}`);
}

document.querySelectorAll(".st-rail-item").forEach((btn) => {
  btn.addEventListener("click", () => switchSection(btn.dataset.section));
});

document.getElementById("profile-cancel").addEventListener("click", () => {
  profileDialog.close();
});

document.getElementById("persona-cancel")?.addEventListener("click", () => {
  personaDialog?.close();
});

document.getElementById("btn-save-pref-every")?.addEventListener("click", async () => {
  try {
    const n = Number(preferenceCollectEveryEl?.value ?? 10);
    const data = await api("/api/settings", {
      method: "PUT",
      body: JSON.stringify({ preferenceCollectEveryTurns: n }),
    });
    state.settings = data.settings;
    if (preferenceCollectEveryEl) {
      preferenceCollectEveryEl.value = String(
        data.settings.preferenceCollectEveryTurns ?? 10,
      );
    }
    showToast(
      `已保存：每隔 ${data.settings.preferenceCollectEveryTurns} 回合采集偏好`,
    );
  } catch (err) {
    showToast(err.message, true);
  }
});

personaForm?.addEventListener("submit", async (e) => {
  e.preventDefault();
  try {
    await savePersona();
  } catch (err) {
    showToast(err.message, true);
  }
});

personasListEl?.addEventListener("change", async (e) => {
  const input = e.target.closest("input[data-action='creation-default']");
  if (!input) return;
  const id = input.dataset.id;
  try {
    await api(`/api/personas/${encodeURIComponent(id)}`, {
      method: "PUT",
      body: JSON.stringify({ creationDefault: Boolean(input.checked) }),
    });
    await loadAll();
    showToast(input.checked ? "已设为创作默认" : "已取消创作默认");
  } catch (err) {
    showToast(err.message, true);
    await loadAll();
  }
});

personasListEl?.addEventListener("click", async (e) => {
  const btn = e.target.closest("[data-action]");
  if (!btn) return;
  if (btn.matches("input[data-action='creation-default']")) return;
  const id = btn.dataset.id;
  const action = btn.dataset.action;
  try {
    if (action === "activate-persona") {
      await api(`/api/personas/${encodeURIComponent(id)}/activate`, {
        method: "POST",
      });
      await loadAll();
      showToast("用户角色已选用");
    } else if (action === "edit-persona") {
      openPersonaDialog(state.personas.find((p) => p.id === id));
    } else if (action === "delete-persona") {
      if (!confirm("删除这个用户角色？")) return;
      await api(`/api/personas/${encodeURIComponent(id)}`, { method: "DELETE" });
      await loadAll();
      showToast("已删除");
    }
  } catch (err) {
    showToast(err.message, true);
  }
});

document.getElementById("profile-save").addEventListener("click", () => {
  saveProfile(false).catch((err) => showToast(err.message, true));
});

profileForm.baseUrl.addEventListener("input", () => {
  if (editingProfileId) return;
  void restoreCreateSniffCache();
});

profileForm.apiKey.addEventListener("input", () => {
  if (editingProfileId) return;
  void restoreCreateSniffCache();
});

profileForm.model.addEventListener("input", () => {
  renderCreateModelChoices();
});

profileModelFilterEl?.addEventListener("input", () => {
  renderCreateModelChoices();
});

profileModelFilterEl?.addEventListener("keydown", (e) => {
  if (e.key === "Enter") e.preventDefault();
});

async function sniffIntoCatalog({
  baseUrl,
  apiKey,
  profileId,
  cacheKey,
  seq,
  seqNow,
  baseStill,
  onFound,
  statusEl,
  button,
}) {
  button.disabled = true;
  const prevLabel = button.textContent;
  button.textContent = "嗅探中…";
  setSniffStatus(statusEl, "正在请求 /models…");
  try {
    const body = { baseUrl };
    if (apiKey) body.apiKey = apiKey;
    else if (profileId) body.profileId = profileId;
    const data = await api("/api/profiles/discover-models", {
      method: "POST",
      body: JSON.stringify(body),
    });
    const found = uniqueModelIds(Array.isArray(data.models) ? data.models : []);
    writeSniffModels(sniffBootId, cacheKey, found);
    if (seq !== seqNow()) return;
    if (!baseStill()) return;
    onFound(found);
    const host = data.url ? data.url.replace(/^https?:\/\//, "") : "/models";
    setSniffStatus(
      statusEl,
      found.length
        ? `找到 ${found.length} 个模型（${host}）。在筛选框输入关键词，例如 gemini。`
        : `没有返回模型（${host}）`,
      !found.length,
    );
  } catch (err) {
    setSniffStatus(statusEl, err.message || "嗅探失败", true);
  } finally {
    button.disabled = false;
    button.textContent = prevLabel || "嗅探";
  }
}

profileSniffBtn?.addEventListener("click", async () => {
  const baseUrl = profileForm.baseUrl.value.trim();
  const apiKey = profileForm.apiKey.value.trim();
  if (!baseUrl) {
    setSniffStatus(profileSniffStatusEl, "先填写 Base URL", true);
    return;
  }
  if (!apiKey && !editingProfileId) {
    setSniffStatus(profileSniffStatusEl, "先填写 API Key", true);
    return;
  }
  const seq = ++sniffRestoreSeq;
  const cacheKey = await sniffCacheKeyFor(createSniffContext());
  const baseKey = normalizeBaseUrlKey(baseUrl);
  await sniffIntoCatalog({
    baseUrl,
    apiKey,
    profileId: editingProfileId,
    cacheKey,
    seq,
    seqNow: () => sniffRestoreSeq,
    baseStill: () => normalizeBaseUrlKey(profileForm.baseUrl.value) === baseKey,
    statusEl: profileSniffStatusEl,
    button: profileSniffBtn,
    onFound(found) {
      dialogSniffBase = baseKey;
      dialogKnownModels = found;
      renderCreateModelChoices();
    },
  });
});

profileModelListEl?.addEventListener("click", (e) => {
  const btn = e.target.closest("[data-pick-model]");
  if (!btn) return;
  profileForm.model.value = btn.getAttribute("data-pick-model") || "";
  renderCreateModelChoices();
});

function openAddModelDialog(groupId) {
  const source = state.profiles.find((profile) => (profile.groupId || "") === groupId);
  if (!source) {
    showToast("这一组还没有可复制的地址和 Key", true);
    return;
  }
  const group = state.groups.find((item) => item.id === groupId);
  addModelSource = source;
  if (addModelGroupEl) {
    addModelGroupEl.textContent = `${group?.name || "这一组"} · ${source.baseUrl}`;
  }
  if (addModelFilterEl) addModelFilterEl.value = "";
  addKnownModels = [];
  addSniffBase = "";
  setSniffStatus(addModelStatusEl, "");
  renderAddModelChoices();
  addModelDialog?.showModal();
  void restoreAddSniffCache();
}

async function adoptModel(model) {
  const source = addModelSource;
  if (!source || !model) return;
  const existing = state.profiles.find(
    (profile) =>
      (profile.groupId || "") === (source.groupId || "") &&
      profile.model === model,
  );
  if (existing) {
    addModelDialog?.close();
    await activateProfile(existing.id);
    return;
  }
  const result = await api("/api/profiles", {
    method: "POST",
    body: JSON.stringify({
      name: model,
      baseUrl: source.baseUrl,
      apiKey: source.apiKey,
      model,
      reasoningEffort: source.reasoningEffort || "",
      activate: true,
    }),
  });
  addModelDialog?.close();
  const savedId = result.profile?.id || result.activeProfileId;
  if (savedId) recordApiProfileUsage(savedId);
  await loadAll();
  const n = result.reloadedSessions ?? 0;
  showToast(`已添加并选用 ${model}${n > 0 ? `，已更新 ${n} 个活跃会话` : ""}`);
}

document.getElementById("add-model-cancel")?.addEventListener("click", () => {
  addModelDialog?.close();
});

addModelFilterEl?.addEventListener("input", () => {
  renderAddModelChoices();
});

addModelFilterEl?.addEventListener("keydown", (e) => {
  if (e.key === "Enter") e.preventDefault();
});

document.getElementById("add-model-form")?.addEventListener("submit", (e) => {
  e.preventDefault();
});

addModelSniffBtn?.addEventListener("click", async () => {
  const source = addModelSource;
  if (!source?.baseUrl) return;
  const seq = ++addSniffSeq;
  const cacheKey = await sniffCacheKeyFor(addSniffContext());
  const baseKey = normalizeBaseUrlKey(source.baseUrl);
  await sniffIntoCatalog({
    baseUrl: source.baseUrl,
    apiKey: source.apiKey,
    profileId: source.id,
    cacheKey,
    seq,
    seqNow: () => addSniffSeq,
    baseStill: () => normalizeBaseUrlKey(addModelSource?.baseUrl || "") === baseKey,
    statusEl: addModelStatusEl,
    button: addModelSniffBtn,
    onFound(found) {
      addSniffBase = baseKey;
      addKnownModels = found;
      renderAddModelChoices();
    },
  });
});

addModelListEl?.addEventListener("click", (e) => {
  const btn = e.target.closest("[data-pick-model]");
  if (!btn) return;
  adoptModel(btn.getAttribute("data-pick-model") || "").catch((err) =>
    showToast(err.message, true),
  );
});

profileForm.addEventListener("submit", async (e) => {
  e.preventDefault();
  try {
    await saveProfile(true);
  } catch (err) {
    showToast(err.message, true);
  }
});

profilesListEl.addEventListener("change", async (e) => {
  const input = e.target.closest("[data-action='rename-group']");
  if (!input) return;
  const id = input.dataset.id;
  const name = input.value.trim();
  if (!id || !name) return;
  const current = state.groups.find((group) => group.id === id);
  if (current && current.name === name) return;
  try {
    const data = await api(`/api/profile-groups/${encodeURIComponent(id)}`, {
      method: "PUT",
      body: JSON.stringify({ name }),
    });
    state.groups = data.groups || state.groups;
    showToast(`组名已改为 ${name}`);
  } catch (err) {
    showToast(err.message, true);
    await loadAll();
  }
});

profileSearchEl?.addEventListener("input", () => {
  profileSearchQuery = profileSearchEl.value || "";
  renderProfiles();
});

profilesListEl.addEventListener("click", async (e) => {
  const btn = e.target.closest("[data-action]");
  if (!btn) return;
  const id = btn.dataset.id;
  const action = btn.dataset.action;

  try {
    if (action === "toggle-group-all") {
      if (showAllProfilesByGroup.has(id)) showAllProfilesByGroup.delete(id);
      else showAllProfilesByGroup.add(id);
      renderProfiles();
      return;
    }
    if (action === "add-model") {
      openAddModelDialog(id);
      return;
    }
    if (action === "activate-profile") {
      await activateProfile(id);
    } else if (action === "edit-profile") {
      openProfileDialog(state.profiles.find((p) => p.id === id));
    } else if (action === "probe-capabilities") {
      const el = document.getElementById(`test-${id}`);
      el.textContent = "探测中（含连通性，会打几次短请求）…";
      el.className = "test-result";
      const result = await api(`/api/profiles/${id}/probe-capabilities`, {
        method: "POST",
      });
      await loadAll();
      const caps = result.profile?.capabilities;
      const chatOk = caps?.chat === "ok";
      const note = !chatOk
        ? `连接失败${caps?.notes?.[0] ? `：${caps.notes[0]}` : ""}`
        : result.deliveryModeLabel
          ? `连接正常 · 投递将用：${result.deliveryModeLabel}`
          : "探测完成";
      const refreshed = document.getElementById(`test-${id}`);
      if (refreshed) {
        refreshed.textContent = note;
        refreshed.className = `test-result ${chatOk ? "ok" : "fail"}`;
      }
      showToast(note, !chatOk);
    } else if (action === "forget-usage") {
      if (!forgetApiProfileUsage(id)) return;
      renderProfiles();
      showToast("已移出曾用。配置还在，可在「显示全部」里再选用。");
    } else if (action === "delete-profile") {
      if (!confirm("确定删除此 API 配置？")) return;
      await api(`/api/profiles/${id}`, { method: "DELETE" });
      await loadAll();
      showToast("已删除");
    }
  } catch (err) {
    showToast(err.message, true);
  }
});

presetsListEl.addEventListener("click", async (e) => {
  if (e.target.closest("[data-stop-expand]")) return;

  const expandHead = e.target.closest('[data-action="expand-entry"]');
  if (expandHead) {
    const panel = expandHead.closest(".preset-entries-inner");
    const presetId = panel?.dataset.presetId;
    const entryId = expandHead.dataset.id;
    if (!presetId || !entryId) return;
    const cur = openPresetEntryId.get(presetId);
    if (cur === entryId) openPresetEntryId.delete(presetId);
    else openPresetEntryId.set(presetId, entryId);
    const data = expandedPresetEntries.get(presetId);
    if (data) renderPresetEntriesPanel(presetId, data);
    return;
  }

  const btn = e.target.closest("[data-action]");
  if (!btn) return;
  const id = btn.dataset.id;
  const action = btn.dataset.action;

  try {
    if (action === "activate-preset") {
      if (state.settings.activePresetId === id) await deactivatePreset();
      else await activatePreset(id);
    } else if (action === "probe-preset") {
      openProbeDialog(id);
    } else if (action === "toggle-preset-entries") {
      await togglePresetEntries(id);
    } else if (action === "delete-preset") {
      if (!confirm("确定删除此预设？")) return;
      await api(`/api/presets/${id}`, { method: "DELETE" });
      expandedPresetEntries.delete(id);
      openPresetEntryId.delete(id);
      await loadAll();
      showToast("已删除");
    } else if (action === "collapse-entry") {
      const panel = btn.closest(".preset-entries-inner");
      const presetId = panel?.dataset.presetId;
      if (!presetId) return;
      openPresetEntryId.delete(presetId);
      const data = expandedPresetEntries.get(presetId);
      if (data) renderPresetEntriesPanel(presetId, data);
    } else if (action === "save-entry") {
      const article = btn.closest(".preset-entry");
      const panel = btn.closest(".preset-entries-inner");
      const presetId = panel?.dataset.presetId;
      if (!article || !presetId) return;
      const name = article.querySelector('[data-field="name"]')?.value ?? "";
      const content = article.querySelector('[data-field="content"]')?.value ?? "";
      openPresetEntryId.set(presetId, id);
      await patchPresetEntry(presetId, { id, name, content });
    } else if (action === "save-generation") {
      const panel = btn.closest(".preset-entries-inner");
      const presetId = panel?.dataset.presetId;
      if (!presetId) return;
      await patchPresetGeneration(presetId, collectGenerationFromPanel(panel));
    }
  } catch (err) {
    showToast(err.message, true);
  }
});

presetsListEl.addEventListener("keydown", (e) => {
  if (e.key !== "Enter" && e.key !== " ") return;
  const head = e.target.closest?.('[data-action="expand-entry"]');
  if (!head) return;
  e.preventDefault();
  head.click();
});

presetsListEl.addEventListener("change", async (e) => {
  const input = e.target.closest('input[data-action="toggle-entry"]');
  if (!input) return;
  const article = input.closest(".preset-entry");
  const panel = input.closest(".preset-entries-inner");
  const presetId = panel?.dataset.presetId;
  const id = input.dataset.id;
  if (!presetId || !id) return;
  try {
    await patchPresetEntry(presetId, { id, enabled: input.checked });
  } catch (err) {
    input.checked = !input.checked;
    showToast(err.message, true);
  }
});

presetFileEl.addEventListener("change", async () => {
  const file = presetFileEl.files?.[0];
  if (!file) return;
  try {
    const text = await file.text();
    const raw = JSON.parse(text);
    const name = file.name.replace(/\.json$/i, "");
    const report = await api("/api/presets/import", {
      method: "POST",
      body: JSON.stringify({ raw, name }),
    });
    lastImportedPresetId = report.preset.id;
    importReportEl.hidden = false;
    importReportEl.innerHTML = `
      <div>${[
        `已导入: ${report.preset.name}`,
        `条目: ${report.promptCount}，启用: ${report.enabledCount}`,
        report.warnings.length ? `警告: ${report.warnings.join("; ")}` : "",
      ]
        .filter(Boolean)
        .join("<br>")}</div>
      <div class="import-report-actions">
        <button type="button" class="btn-activate" id="activate-imported-preset">选用此预设并生效</button>
      </div>`;
    document
      .getElementById("activate-imported-preset")
      ?.addEventListener("click", async () => {
        try {
          await activatePreset(lastImportedPresetId);
        } catch (err) {
          showToast(err.message, true);
        }
      });
    await loadAll();
    showToast("预设已导入，请点击「选用此预设并生效」");
  } catch (err) {
    showToast(err.message, true);
  } finally {
    presetFileEl.value = "";
  }
});

function resetProbeForm() {
  probeMessageEl.value = DEFAULT_PROBE_CONTEXT.message;
  probeLoreBeforeEl.value = DEFAULT_PROBE_CONTEXT.loreBefore;
  probeHistoryEl.value = DEFAULT_PROBE_CONTEXT.history;
  probeLoreAfterEl.value = DEFAULT_PROBE_CONTEXT.loreAfter;
  probePostTurnEl.value = DEFAULT_PROBE_CONTEXT.postTurn;
  probeStatusEl.hidden = true;
  probeStatusEl.textContent = "";
  probeReplyWrapEl.hidden = true;
  probeReplyEl.textContent = "";
  probeMessagesEl.innerHTML =
    '<p class="probe-empty">发送后显示实际拼进请求的消息。</p>';
}

function openProbeDialog(presetId) {
  const preset = state.presets.find((p) => p.id === presetId);
  probingPresetId = presetId;
  probePresetNameEl.textContent = preset?.name ?? presetId;
  resetProbeForm();
  probeDialog.showModal();
  probeMessageEl.focus();
  probeMessageEl.select();
}

function renderProbeMessages(messages) {
  if (!messages?.length) {
    probeMessagesEl.innerHTML =
      '<p class="probe-empty">这次没有拼出任何消息。</p>';
    return;
  }
  probeMessagesEl.innerHTML = messages
    .map(
      (m, i) => `
      <article class="probe-msg">
        <header>
          <span class="probe-role ${escapeHtml(m.role)}">${escapeHtml(m.role)}</span>
          <span class="probe-index">#${i + 1}</span>
        </header>
        <pre>${escapeHtml(m.content)}</pre>
      </article>`,
    )
    .join("");
}

function setProbeBusy(busy) {
  probeBusy = busy;
  probeSendEl.disabled = busy;
  probeSendEl.textContent = busy ? "发送中…" : "发送一轮";
}

async function sendProbe() {
  if (probeBusy || !probingPresetId) return;
  const message = probeMessageEl.value.trim();
  if (!message) {
    probeStatusEl.hidden = false;
    probeStatusEl.textContent = "请填写本轮输入";
    probeMessageEl.focus();
    return;
  }

  setProbeBusy(true);
  probeStatusEl.hidden = false;
  probeStatusEl.textContent = "正在拼装上下文…";
  probeReplyWrapEl.hidden = true;

  try {
    const result = await api(`/api/presets/${probingPresetId}/probe`, {
      method: "POST",
      body: JSON.stringify({
        message,
        loreBefore: probeLoreBeforeEl.value,
        history: probeHistoryEl.value,
        loreAfter: probeLoreAfterEl.value,
        postTurn: probePostTurnEl.value,
      }),
    });
    renderProbeMessages(result.messages);
    if (result.reply) {
      probeReplyWrapEl.hidden = false;
      probeReplyEl.textContent = result.reasoning
        ? `${result.reasoning}\n\n——\n\n${result.reply}`
        : result.reply;
    }
    if (result.error) {
      probeStatusEl.textContent = `上下文已拼装，生成失败：${result.error}`;
    } else if (result.skipReason) {
      probeStatusEl.textContent = result.skipReason;
    } else if (result.completed) {
      probeStatusEl.textContent = `已发送 ${result.messages.length} 条`;
    } else {
      probeStatusEl.textContent = `已拼装 ${result.messages.length} 条`;
    }
  } catch (err) {
    probeStatusEl.textContent = err.message;
  } finally {
    setProbeBusy(false);
  }
}

document.getElementById("probe-close")?.addEventListener("click", () => {
  probeDialog.close();
});

probeSendEl?.addEventListener("click", () => {
  sendProbe().catch((err) => showToast(err.message, true));
});

probeMessageEl?.addEventListener("keydown", (e) => {
  if (e.key === "Enter" && (e.ctrlKey || e.metaKey)) {
    e.preventDefault();
    sendProbe().catch((err) => showToast(err.message, true));
  }
});

document.getElementById("btn-save-context-keep")?.addEventListener("click", async () => {
  try {
    const n = Number(contextTraceKeepEl?.value ?? 5);
    const data = await api("/api/settings", {
      method: "PUT",
      body: JSON.stringify({ contextTraceKeepLatest: n }),
    });
    state.settings = data.settings;
    if (contextTraceKeepEl) {
      contextTraceKeepEl.value = String(data.settings.contextTraceKeepLatest ?? 5);
    }
    showToast(`已保存：每个对话保留最新 ${data.settings.contextTraceKeepLatest} 条上下文`);
  } catch (err) {
    showToast(err.message, true);
  }
});

document.getElementById("btn-prune-context")?.addEventListener("click", async () => {
  try {
    const r = await api("/api/settings/context-traces/prune", { method: "POST" });
    showToast(
      `已修剪 ${r.sessions} 个会话：保留 ${r.kept} 条痕迹，清除 ${r.cleared} 条`,
    );
  } catch (err) {
    showToast(err.message, true);
  }
});

document.getElementById("btn-clear-context")?.addEventListener("click", async () => {
  if (!confirm("清除所有已打开会话中保存的 LLM 请求上下文？消息正文不受影响。")) {
    return;
  }
  try {
    const r = await api("/api/settings/context-traces/clear", { method: "POST" });
    showToast(`已清除 ${r.sessions} 个会话中的 ${r.cleared} 条上下文痕迹`);
  } catch (err) {
    showToast(err.message, true);
  }
});

renderPanelHeader();
loadAll().catch((err) => {
  showToast(`加载设置失败: ${err.message}`, true);
});