import { describe, expect, it } from "vitest";
import {
  applyRegexScripts,
  hasRegexFor,
  readRegexScripts,
  runRegexScript,
  type PresetRegexScript,
} from "../src/preset/regex-scripts.js";

const base: PresetRegexScript = {
  name: "t",
  findRegex: "/<choices>[\\s\\S]*?<\\/choices>/g",
  replaceString: "",
  trimStrings: [],
  placement: [2],
  promptOnly: true,
  markdownOnly: false,
  disabled: false,
  runOnEdit: false,
  substituteRegex: 0,
  minDepth: null,
  maxDepth: null,
  approximateSubstitute: false,
};

describe("readRegexScripts", () => {
  it("从 raw.regex_scripts / extensions.regex_scripts / SPreset.RegexBinding 读并去重", () => {
    const raw = {
      regex_scripts: [
        { id: "a", scriptName: "A", findRegex: "/x/g", placement: [1], promptOnly: true },
      ],
      extensions: {
        regex_scripts: [
          { id: "a", scriptName: "A", findRegex: "/x/g", placement: [1], promptOnly: true },
          { id: "b", scriptName: "B", findRegex: "/y/g", placement: [2], markdownOnly: true },
        ],
        SPreset: {
          RegexBinding: {
            regexes: [
              { id: "c", scriptName: "C", findRegex: "/z/g", placement: [2] },
            ],
          },
        },
      },
    };
    const scripts = readRegexScripts(raw);
    expect(scripts.map((s) => s.name)).toEqual(["A", "B", "C"]);
    expect(scripts[1]?.markdownOnly).toBe(true);
    expect(scripts[2]?.promptOnly).toBe(false);
  });

  it("没有 findRegex 的条目跳过", () => {
    expect(readRegexScripts({ regex_scripts: [{ id: "x" }] })).toEqual([]);
  });
});

describe("runRegexScript（对齐酒馆 runRegexScript）", () => {
  it("支持 {{match}} 与 $1 / 命名组", () => {
    expect(
      runRegexScript("前言<choices>a</choices>后记", {
        ...base,
        replaceString: "[$1]",
        findRegex: "/<choices>(.*?)<\\/choices>/g",
      }),
    ).toBe("前言[a]后记");
    expect(
      runRegexScript("abc", {
        ...base,
        replaceString: "<<$<x>>>",
        findRegex: "/(?<x>b)/g",
      }),
    ).toBe("a<<b>>c");
    expect(
      runRegexScript("打勾", { ...base, replaceString: "✓{{match}}", findRegex: "/打/g" }),
    ).toBe("✓打勾");
  });

  it("trimStrings 从匹配片段里剔掉", () => {
    expect(
      runRegexScript("前((去掉))后", {
        ...base,
        findRegex: "/\\(\\((.*?)\\)\\)/g",
        replaceString: "$1",
        trimStrings: ["去掉"],
      }),
    ).toBe("前后");
  });

  it("坏正则原样返回", () => {
    expect(runRegexScript("x", { ...base, findRegex: "/([/g" })).toBe("x");
  });
});

describe("applyRegexScripts（方向 / placement / depth）", () => {
  it("prompt 只跑 promptOnly，display 只跑 markdownOnly，raw 只跑两者都不是的", () => {
    const scripts: PresetRegexScript[] = [
      { ...base, name: "p", promptOnly: true, findRegex: "/A/g", replaceString: "P" },
      { ...base, name: "d", promptOnly: false, markdownOnly: true, findRegex: "/A/g", replaceString: "D" },
      { ...base, name: "r", promptOnly: false, markdownOnly: false, findRegex: "/A/g", replaceString: "R" },
    ];
    expect(applyRegexScripts("A", scripts, { placement: 2, direction: "prompt" })).toBe("P");
    expect(applyRegexScripts("A", scripts, { placement: 2, direction: "display" })).toBe("D");
    expect(applyRegexScripts("A", scripts, { placement: 2, direction: "raw" })).toBe("R");
  });

  it("placement 不匹配就不跑", () => {
    const scripts: PresetRegexScript[] = [{ ...base, findRegex: "/A/g", replaceString: "P" }];
    expect(applyRegexScripts("A", scripts, { placement: 1, direction: "prompt" })).toBe("A");
  });

  it("depth 超出 min/max 就跳过", () => {
    const scripts: PresetRegexScript[] = [
      { ...base, findRegex: "/A/g", replaceString: "P", minDepth: 2 },
    ];
    expect(applyRegexScripts("A", scripts, { placement: 2, direction: "prompt", depth: 1 })).toBe("A");
    expect(applyRegexScripts("A", scripts, { placement: 2, direction: "prompt", depth: 3 })).toBe("P");
  });

  it("disabled 的脚本不跑", () => {
    const scripts: PresetRegexScript[] = [{ ...base, disabled: true, findRegex: "/A/g", replaceString: "P" }];
    expect(applyRegexScripts("A", scripts, { placement: 2, direction: "prompt" })).toBe("A");
  });

  it("substituteRegex=RAW 时先展开 findRegex 里的宏", () => {
    const scripts: PresetRegexScript[] = [
      { ...base, findRegex: "/{{char}}/g", replaceString: "X", substituteRegex: 1 },
    ];
    expect(
      applyRegexScripts("角色名", scripts, {
        placement: 2,
        direction: "prompt",
        expand: (text) => text.replaceAll("{{char}}", "角色名"),
      }),
    ).toBe("X");
  });

  it("hasRegexFor 快速判断", () => {
    const scripts: PresetRegexScript[] = [{ ...base }];
    expect(hasRegexFor(scripts, "prompt", 2)).toBe(true);
    expect(hasRegexFor(scripts, "display", 2)).toBe(false);
  });
});

describe("装配时对对话历史跑发送前正则", () => {
  it("user/assistant 分别按 placement 1/2 处理，depth 生效", async () => {
    const { importSillyTavernPreset } = await import("../src/preset/importer.js");
    const { assemblePlayWorkerMessages } = await import("../src/preset/play-frame.js");
    const report = importSillyTavernPreset(
      {
        prompts: [
          {
            identifier: "chatHistory",
            name: "History",
            role: "system",
            marker: true,
            content: "",
          },
        ],
        prompt_order: [
          { character_id: 100001, order: [{ identifier: "chatHistory", enabled: true }] },
        ],
        regex_scripts: [
          {
            id: "strip",
            scriptName: "去选项",
            findRegex: "/<choices>[\\s\\S]*?<\\/choices>/g",
            replaceString: "",
            placement: [2],
            promptOnly: true,
          },
          {
            id: "user-only",
            scriptName: "改用户输入",
            findRegex: "/你好/g",
            replaceString: "您好",
            placement: [1],
            promptOnly: true,
          },
        ],
      },
      { name: "regex-history" },
    );
    const messages = assemblePlayWorkerMessages({
      systemPrompt: "",
      preset: report.preset,
      pack: {
        worldBookBefore: [],
        history: [
          { role: "user", content: "你好" },
          { role: "assistant", content: "回答<choices>ABC</choices>" },
        ],
        worldBookAfter: [],
        turn: "",
        postTurn: [],
      },
      persona: null,
      charName: null,
    });
    expect(messages.map((m) => m.content)).toEqual(["您好", "回答"]);
    expect(messages.map((m) => m.role)).toEqual(["user", "assistant"]);
  });
});