import assert from "node:assert/strict";
import { describe, it } from "node:test";
import { readFileSync } from "node:fs";
import { fileURLToPath } from "node:url";
import {
  DY_EMOJI_ALIASES,
  DY_EMOJI_GROUPS,
  DY_EMOJI_RE,
  dyEmojiFileKey,
  dyEmojiUrl,
  expandDyEmojiShortcodes,
} from "./dyEmoji.ts";

const CAT_HASH = DY_EMOJI_ALIASES["猫猫"];

describe("DY_EMOJI_ALIASES", () => {
  it("中文语义名 → hash 文件名，文件名全局唯一", () => {
    assert.match(CAT_HASH, /^[A-Za-z0-9_-]+$/);
    const files = Object.values(DY_EMOJI_ALIASES);
    assert.equal(new Set(files).size, files.length);
  });
  it("完整覆盖 manifest.tos（集合一致；面板分组顺序独立于 manifest）", () => {
    const manifest = JSON.parse(
      readFileSync(fileURLToPath(new URL("../public/emoji/dy/manifest.json", import.meta.url)), "utf8")
    );
    assert.deepEqual(Object.values(DY_EMOJI_ALIASES).sort(), [...manifest.tos].sort());
  });
});

describe("DY_EMOJI_GROUPS", () => {
  it("分组 keys 无重复", () => {
    const all = DY_EMOJI_GROUPS.flatMap((g) => g.keys);
    assert.equal(new Set(all).size, all.length);
  });
  it("分组 keys 恰好覆盖全部中文语义名（不多不少）", () => {
    const grouped = DY_EMOJI_GROUPS.flatMap((g) => g.keys).sort();
    const allKeys = Object.keys(DY_EMOJI_ALIASES).sort();
    assert.deepEqual(grouped, allKeys);
  });
});

describe("dyEmojiFileKey / dyEmojiUrl", () => {
  it("中文 key 解析为实际文件名，合成表情组合名透传", () => {
    assert.equal(dyEmojiFileKey("猫猫"), CAT_HASH);
    assert.equal(dyEmojiFileKey("001--002--heart"), "001--002--heart");
  });
  it("拼接扁平目录 URL", () => {
    assert.equal(dyEmojiUrl("猫猫"), `/emoji/dy/${CAT_HASH}.png`);
    assert.equal(dyEmojiUrl("001--002--heart"), "/emoji/dy/001--002--heart.png");
  });
  it("未知 key 原样 URL 编码透传", () => {
    assert.equal(dyEmojiUrl("不存在"), `/emoji/dy/${encodeURIComponent("不存在")}.png`);
  });
});

describe("expandDyEmojiShortcodes", () => {
  it("中文短代码替换为 markdown 图片", () => {
    assert.equal(
      expandDyEmojiShortcodes("你好[:猫猫:]!"),
      `你好![dy:猫猫](/emoji/dy/${CAT_HASH}.png)!`
    );
  });
  it("合成表情组合名短代码", () => {
    assert.equal(
      expandDyEmojiShortcodes("[:001--002--heart:]"),
      "![dy:001--002--heart](/emoji/dy/001--002--heart.png)"
    );
  });
  it("多次替换且共享前缀", () => {
    assert.equal(
      expandDyEmojiShortcodes("[:猫猫:][:aa:][:猫猫:]"),
      `![dy:猫猫](/emoji/dy/${CAT_HASH}.png)![dy:aa](/emoji/dy/aa.png)![dy:猫猫](/emoji/dy/${CAT_HASH}.png)`
    );
  });
  it("无短代码时原样返回", () => {
    const s = "普通文本 [a:] :x: [[y]]";
    assert.equal(expandDyEmojiShortcodes(s), s);
    assert.equal(expandDyEmojiShortcodes(""), "");
  });
  it("非法 key 不匹配（含 . / 空 / @ / 空白）", () => {
    assert.equal(expandDyEmojiShortcodes("[:a.b:][:]"), "[:a.b:][:]");
    assert.equal(expandDyEmojiShortcodes("[:空 格:]"), "[:空 格:]");
    assert.equal(expandDyEmojiShortcodes("[:@x:]"), "[:@x:]");
  });
  it("跨行文本", () => {
    assert.equal(
      expandDyEmojiShortcodes("第一行[:猫猫:]\n第二行"),
      `第一行![dy:猫猫](/emoji/dy/${CAT_HASH}.png)\n第二行`
    );
  });
  it("连续使用共享同一正则（lastIndex 复用安全）", () => {
    assert.equal(expandDyEmojiShortcodes("[:猫猫:]"), `![dy:猫猫](/emoji/dy/${CAT_HASH}.png)`);
    assert.equal(expandDyEmojiShortcodes("[:b:]"), "![dy:b](/emoji/dy/b.png)");
    assert.equal(expandDyEmojiShortcodes("纯文本"), "纯文本");
    assert.equal(expandDyEmojiShortcodes("[:c:]"), "![dy:c](/emoji/dy/c.png)");
  });
  it("正则含 g 标志（供分段渲染使用）", () => {
    assert.ok(DY_EMOJI_RE.global);
  });
});