import { describe, expect, it } from "vitest";
import { expandAtDirectives, expandPresetDirectives } from "../src/directives/expand.js";
import { collectMacroNames, createMacroVars, expandMacros } from "../src/directives/macros.js";
import { assemblePresetMessages } from "../src/preset/assembler.js";
import type { PresetPackage } from "../src/types/preset.js";

describe("expandMacros", () => {
  it("strips {{// }} comments, including multi-line ones", () => {
    const r = expandMacros("前{{// \n声明：禁止外传\n\n}}后");
    expect(r.text).toBe("前后");
    expect(r.hits.map((h) => h.kind)).toEqual(["comment"]);
  });

  it("does not expand @ tokens inside a comment", () => {
    const r = expandAtDirectives("{{// 不要动 @玩家 }}", {
      persona: { name: "阿泽" },
    });
    expect(r.text).toBe("");
    expect(r.hits.map((h) => h.kind)).toEqual(["comment"]);
  });

  it("{{trim}} expands to empty and asks caller to trim", () => {
    const r = expandMacros("  {{// 备注 }}{{trim}}\n正文  ");
    expect(r.text).toBe("  \n正文  ");
    expect(r.trim).toBe(true);
    expect(expandAtDirectives("  {{trim}}\n正文  ").text).toBe("正文");
  });

  it("{{user}} and {{char}}", () => {
    const r = expandMacros("{{user}} 与 {{char}}", {
      user: "林晚",
      char: "长夜行",
    });
    expect(r.text).toBe("林晚 与 长夜行");
  });

  it("{{char}} falls back to 作品", () => {
    expect(expandMacros("{{char}}").text).toBe("作品");
  });

  it("{{persona}} expands to the persona description", () => {
    expect(expandMacros("{{persona}}", { persona: "二十岁，缄默" }).text).toBe(
      "二十岁，缄默",
    );
    // 没设人设 → 空串（与酒馆一致）
    expect(expandMacros("[{{persona}}]").text).toBe("[]");
  });

  it("treats {{persona}} as a known macro in the import report", () => {
    expect(collectMacroNames("{{persona}} {{charPrompt}}")).toContain(
      "{{persona}}",
    );
  });

  it("setvar then getvar in the same scope", () => {
    const vars = createMacroVars();
    expect(expandMacros("{{setvar::a::你好}}", { vars }).text).toBe("");
    expect(expandMacros("{{getvar::a}}!", { vars }).text).toBe("你好!");
  });

  it("getvar on unset variable is empty", () => {
    expect(expandMacros("[{{getvar::nope}}]").text).toBe("[]");
  });

  it("keeps whitespace inside setvar values", () => {
    const vars = createMacroVars();
    expandMacros("{{setvar::set1::    }}", { vars });
    expect(vars.get("set1")).toBe("    ");
  });

  it("addvar appends", () => {
    const vars = createMacroVars();
    expandMacros("{{setvar::k::a}}{{addvar::k::b}}", { vars });
    expect(vars.get("k")).toBe("ab");
  });

  it("{{roll N}} yields an integer in range", () => {
    for (let i = 0; i < 20; i++) {
      const value = Number(expandMacros("{{roll 60}}").text);
      expect(Number.isInteger(value)).toBe(true);
      expect(value).toBeGreaterThanOrEqual(1);
      expect(value).toBeLessThanOrEqual(60);
    }
  });

  it("{{roll:1d6}} and {{roll::d9}} roll dice", () => {
    for (let i = 0; i < 20; i++) {
      const six = Number(expandMacros("{{roll:1d6}}").text);
      expect(six).toBeGreaterThanOrEqual(1);
      expect(six).toBeLessThanOrEqual(6);
      const nine = Number(expandMacros("{{roll::d9}}").text);
      expect(nine).toBeGreaterThanOrEqual(1);
      expect(nine).toBeLessThanOrEqual(9);
    }
  });

  it("does not roll when allowDice is false", () => {
    expect(expandMacros("{{roll 60}}", { allowDice: false }).text).toBe(
      "{{roll 60}}",
    );
  });

  it("leaves unknown macros untouched", () => {
    const r = expandMacros("{{turnPlus1}} {{MEMORY_TABLE}} {{ }}");
    expect(r.text).toBe("{{turnPlus1}} {{MEMORY_TABLE}} {{ }}");
    expect(r.hits).toEqual([]);
  });

  it("{{{setvar::x::}} 里第一个花括号是字面量（酒馆语义）", () => {
    const vars = createMacroVars();
    const r = expandMacros("{{{setvar::SEMOD1::}}\n[RESET]", { vars });
    expect(r.text).toBe("{\n[RESET]");
    expect(vars.get("SEMOD1")).toBe("");
  });

  it("{{mesExamples}} 有上下文就展开，没有就原样保留", () => {
    expect(expandMacros("[{{mesExamples}}]", { mesExamples: "<START>\nUser: 甲" }).text).toBe(
      "[<START>\nUser: 甲]",
    );
    expect(expandMacros("[{{mesExamples}}]").text).toBe("[{{mesExamples}}]");
  });

  it("三花括号里的宏也进导入报告（按 setvar 计）", () => {
    expect(collectMacroNames("{{{setvar::a::}}")).toContain("{{setvar}}");
  });
  it("collectMacroNames reports unknown macros by raw text", () => {
    const names = collectMacroNames(
      "{{// c}}{{user}}{{setvar::a::b}}{{turnPlus1}}{{roll 9}}",
    );
    expect(names).toContain("{{comment}}");
    expect(names).toContain("{{user}}");
    expect(names).toContain("{{setvar}}");
    expect(names).toContain("{{roll}}");
    expect(names.some((n) => n.includes("turnPlus1"))).toBe(true);
  });
});

function presetWith(prompts: Array<{ id: string; content: string }>): PresetPackage {
  return {
    id: "p",
    name: "p",
    source: "sillytavern",
    prompts: prompts.map((p) => ({
      id: p.id,
      name: p.id,
      enabled: true,
      role: "system" as const,
      content: p.content,
      marker: false,
      sourceIdentifier: p.id,
    })),
    promptOrder: prompts.map((p, i) => ({
      promptId: p.id,
      enabled: true,
      orderIndex: i,
    })),
    generation: {},
    unsupported: [],
    importedAt: "2026-01-01T00:00:00.000Z",
  };
}

describe("preset assembly macro scope", () => {
  it("setvar in an earlier entry is visible to getvar in a later entry", () => {
    const preset = presetWith([
      { id: "a", content: "{{setvar::set1::    }}{{// 预设说明 }}" },
      { id: "b", content: "规则{{getvar::set1}}结束" },
    ]);

    const vars = createMacroVars();
    const messages = assemblePresetMessages(
      preset,
      () => null,
      (content) => expandPresetDirectives(content, { vars, user: "阿泽" }).text,
    );

    expect(messages.map((m) => m.content)).toEqual(["规则    结束"]);
  });

  it("expands {{char}} from assembly context", () => {
    const preset = presetWith([{ id: "a", content: "<{{char}}>正文</{{char}}>" }]);
    const messages = assemblePresetMessages(
      preset,
      () => null,
      (content) => expandPresetDirectives(content, { charName: "长夜行" }).text,
    );
    expect(messages[0]?.content).toBe("<长夜行>正文</长夜行>");
  });
});

describe("{{// 注释 }} 配平", () => {
  it("注释里嵌套宏不会漏出尾巴", () => {
    const text = expandMacros("{{// 注释：把 {{user}} 换成别的\n}}|用户：{{user}}|", {
      user: "User",
    }).text;
    expect(text).toBe("|用户：User|");
  });

  it("普通注释照旧吃掉", () => {
    expect(expandMacros("A{{// 说明 }}B", {}).text).toBe("AB");
  });
});