import assert from "node:assert/strict";
import { describe, it } from "node:test";
import {
  announcementPath,
  commentAnchor,
  entityPath,
  leaderboardPath,
  libraryDocPath,
  libraryDocReadPath,
  libraryPath,
  matchPrettyPath,
  matchStandardPath,
  normalizeUrlStyle,
  pagePath,
  parseEntityPath,
  postPath,
  userPath,
} from "./urlStyle.ts";

describe("normalizeUrlStyle", () => {
  it("合法值与容错", () => {
    assert.equal(normalizeUrlStyle("default"), "default");
    assert.equal(normalizeUrlStyle(" HTML "), "html");
    assert.equal(normalizeUrlStyle("DISCUZ"), "discuz");
    assert.equal(normalizeUrlStyle("pretty"), "default");
    assert.equal(normalizeUrlStyle(undefined), "default");
    assert.equal(normalizeUrlStyle(42), "default");
  });
});

describe("路径构造器", () => {
  it("三风格帖子路径", () => {
    assert.equal(postPath("default", 123), "/post/123");
    assert.equal(postPath("html", 123), "/post-123.html");
    assert.equal(postPath("discuz", 123), "/thread-123.html");
  });
  it("三风格用户路径", () => {
    assert.equal(userPath("default", 5), "/u/5");
    assert.equal(userPath("html", 5), "/user-5.html");
    assert.equal(userPath("discuz", 5), "/space-uid-5.html");
  });
  it("三风格公告路径", () => {
    assert.equal(announcementPath("default", 1), "/announcement/1");
    assert.equal(announcementPath("html", 1), "/announcement-1.html");
    assert.equal(announcementPath("discuz", 1), "/notice-1.html");
  });
  it("非法 id 返回空串", () => {
    assert.equal(postPath("default", 0), "");
    assert.equal(postPath("html", -1), "");
    assert.equal(userPath("discuz", Number.NaN), "");
  });
  it("自建页三风格并编码 slug", () => {
    assert.equal(pagePath("default", "about"), "/p/about");
    assert.equal(pagePath("html", "about"), "/p-about.html");
    assert.equal(pagePath("discuz", "使用指南"), `/page-${encodeURIComponent("使用指南")}.html`);
    assert.equal(pagePath("html", "使用指南"), `/p-${encodeURIComponent("使用指南")}.html`);
    assert.equal(pagePath("default", "  "), "/p/");
  });
  it("排行榜三风格", () => {
    assert.equal(leaderboardPath("default"), "/leaderboard");
    assert.equal(leaderboardPath("html"), "/leaderboard.html");
    assert.equal(leaderboardPath("discuz"), "/rank.html");
  });
  it("书库三风格（html/discuz 同模板；章节 = 详情路径 + ?sec=）", () => {
    assert.equal(libraryPath("default"), "/library");
    assert.equal(libraryPath("html"), "/library.html");
    assert.equal(libraryPath("discuz"), "/library.html");
    assert.equal(libraryDocPath("default", "abc"), "/library/abc");
    assert.equal(libraryDocPath("html", "abc"), "/library-abc.html");
    assert.equal(libraryDocPath("discuz", "abc"), "/library-abc.html");
    assert.equal(
      libraryDocPath("html", "使用指南"),
      `/library-${encodeURIComponent("使用指南")}.html`
    );
    assert.equal(libraryDocPath("default", "  "), "/library");
    assert.equal(libraryDocPath("html", "  "), "/library.html");
    // 阅读页：chapterNo 为书内章序号（1 起），缺省表示第一章
    assert.equal(libraryDocReadPath("default", "abc"), "/library/abc/read");
    assert.equal(libraryDocReadPath("default", "abc", 5), "/library/abc/read?c=5");
    assert.equal(libraryDocReadPath("html", "abc"), "/library-abc.html?sec=1");
    assert.equal(libraryDocReadPath("discuz", "abc", 5), "/library-abc.html?sec=5");
    assert.equal(
      libraryDocReadPath("html", "使用指南", 2),
      `/library-${encodeURIComponent("使用指南")}.html?sec=2`
    );
  });
  it("entityPath 与标准路径", () => {
    assert.equal(entityPath("discuz", "post", 9), "/thread-9.html");
    assert.equal(entityPath("default", "user", 9), "/u/9");
    assert.equal(entityPath("html", "announcement", 9), "/announcement-9.html");
  });
  it("评论锚点使用帖内相对楼层号", () => {
    assert.equal(commentAnchor(1, true, 147), "#comment-1");
    assert.equal(commentAnchor(3, false, 147), "#comment-3-r147");
    // 楼中楼缺评论 id 时退化为楼层锚点
    assert.equal(commentAnchor(3, false), "#comment-3");
    // 楼层无效（评论已不可见）返回空串，由调用方回落纯帖子路径
    assert.equal(commentAnchor(0, true, 147), "");
    assert.equal(commentAnchor(Number.NaN, false, 147), "");
  });
});

describe("matchPrettyPath", () => {
  it("命中各风格模板", () => {
    assert.deepEqual(matchPrettyPath("/post-12.html"), { style: "html", kind: "post", id: 12 });
    assert.deepEqual(matchPrettyPath("/user-3.html"), { style: "html", kind: "user", id: 3 });
    assert.deepEqual(matchPrettyPath("/announcement-7.html"), { style: "html", kind: "announcement", id: 7 });
    assert.deepEqual(matchPrettyPath("/thread-12.html"), { style: "discuz", kind: "post", id: 12 });
    assert.deepEqual(matchPrettyPath("/space-uid-3.html"), { style: "discuz", kind: "user", id: 3 });
    assert.deepEqual(matchPrettyPath("/notice-7.html"), { style: "discuz", kind: "announcement", id: 7 });
    assert.deepEqual(matchPrettyPath("/p-about.html"), { style: "html", kind: "page", slug: "about" });
    assert.deepEqual(matchPrettyPath("/leaderboard.html"), { style: "html", kind: "leaderboard" });
    assert.deepEqual(matchPrettyPath("/rank.html"), { style: "discuz", kind: "leaderboard" });
  });
  it("书库两风格同模板：prefer 优先当前风格，缺省首条兜底", () => {
    assert.equal(matchPrettyPath("/library.html", "html")?.style, "html");
    assert.equal(matchPrettyPath("/library.html", "discuz")?.style, "discuz");
    assert.equal(matchPrettyPath("/library.html")?.style, "html");
    assert.deepEqual(matchPrettyPath("/library-x.html", "discuz"), {
      style: "discuz",
      kind: "libraryDoc",
      slug: "x",
    });
    assert.deepEqual(matchPrettyPath("/library-x.html"), { style: "html", kind: "libraryDoc", slug: "x" });
  });
  it("旧版章节伪静态 -read-{n} 仍可解析（不再生成）", () => {
    assert.deepEqual(matchPrettyPath("/library-x-read-2.html", "discuz"), {
      style: "discuz",
      kind: "libraryRead",
      slug: "x",
      id: 2,
    });
    assert.deepEqual(matchPrettyPath("/library-x-read-2.html"), {
      style: "html",
      kind: "libraryRead",
      slug: "x",
      id: 2,
    });
    // 详情模板不再吞掉 -read-{n}；纯详情仍命中 libraryDoc
    assert.deepEqual(matchPrettyPath("/library-x.html"), { style: "html", kind: "libraryDoc", slug: "x" });
    assert.equal(matchPrettyPath("/library-x-read-2.htmlx"), null);
    assert.equal(matchPrettyPath("/library-x-read-2.html/edit"), null);
  });
  it("书库 pretty 排除子路径与伪造路径", () => {
    assert.equal(matchPrettyPath("/library-x.htmlx"), null);
    assert.equal(matchPrettyPath("/library-x.html/edit"), null);
    assert.equal(matchPrettyPath("/library-.html"), null);
    assert.equal(matchPrettyPath("/library.html/x"), null);
  });
  it("page slug 保持 encoded 原样", () => {
    const enc = encodeURIComponent("使用指南");
    assert.deepEqual(matchPrettyPath(`/page-${enc}.html`), { style: "discuz", kind: "page", slug: enc });
    assert.deepEqual(matchPrettyPath(`/p-${enc}.html`), { style: "html", kind: "page", slug: enc });
  });
  it("排除子路径与伪造路径", () => {
    assert.equal(matchPrettyPath("/post/12"), null);
    assert.equal(matchPrettyPath("/post/12/edit"), null);
    assert.equal(matchPrettyPath("/post-abc.html"), null);
    assert.equal(matchPrettyPath("/thread-12.htmlx"), null);
    assert.equal(matchPrettyPath("/thread-12.html/edit"), null);
    assert.equal(matchPrettyPath("/thread--12.html"), null);
    assert.equal(matchPrettyPath("/post.html"), null);
    assert.equal(matchPrettyPath("/p-.html"), null);
    assert.equal(matchPrettyPath("/leaderboardx.html"), null);
    assert.equal(matchPrettyPath("/rank.htmlx"), null);
    assert.equal(matchPrettyPath("/rank"), null);
  });
});

describe("matchStandardPath / parseEntityPath", () => {
  it("标准路径精确匹配", () => {
    assert.deepEqual(matchStandardPath("/post/12"), { kind: "post", id: 12 });
    assert.deepEqual(matchStandardPath("/u/5"), { kind: "user", id: 5 });
    assert.deepEqual(matchStandardPath("/announcement/7"), { kind: "announcement", id: 7 });
    assert.deepEqual(matchStandardPath("/p/about"), { kind: "page", slug: "about" });
    assert.deepEqual(matchStandardPath("/leaderboard"), { kind: "leaderboard" });
    assert.deepEqual(matchStandardPath("/leaderboard/"), { kind: "leaderboard" });
    assert.deepEqual(matchStandardPath("/library"), { kind: "library" });
    assert.deepEqual(matchStandardPath("/library/"), { kind: "library" });
    assert.deepEqual(matchStandardPath("/library/abc"), { kind: "libraryDoc", slug: "abc" });
    assert.equal(matchStandardPath("/post/12/edit"), null);
    assert.equal(matchStandardPath("/post/abc"), null);
    assert.equal(matchStandardPath("/u/5/followers"), null);
    assert.equal(matchStandardPath("/p/"), null);
    assert.equal(matchStandardPath("/p/a/b"), null);
    // 读页单独识别（?c= 走 query），不得被详情模式误伤
    assert.deepEqual(matchStandardPath("/library/abc/read"), { kind: "libraryRead", slug: "abc" });
    assert.equal(matchStandardPath("/library/a/b"), null);
    assert.equal(matchStandardPath("/libraryx"), null);
  });
  it("parseEntityPath 兼容标准与全部模板", () => {
    assert.deepEqual(parseEntityPath("/post/12"), { kind: "post", id: 12 });
    assert.deepEqual(parseEntityPath("/thread-12.html"), { kind: "post", id: 12 });
    assert.deepEqual(parseEntityPath("/post-12.html"), { kind: "post", id: 12 });
    assert.deepEqual(parseEntityPath("/space-uid-5.html"), { kind: "user", id: 5 });
    assert.deepEqual(parseEntityPath("/p/about"), { kind: "page", slug: "about" });
    assert.deepEqual(parseEntityPath("/p-about.html"), { kind: "page", slug: "about" });
    assert.deepEqual(parseEntityPath(`/page-${encodeURIComponent("使用指南")}.html`), {
      kind: "page",
      slug: "使用指南",
    });
    assert.deepEqual(parseEntityPath("/rank.html"), { kind: "leaderboard" });
    assert.equal(parseEntityPath("/chat/5"), null);
    assert.equal(parseEntityPath("/"), null);
  });
  it("parseEntityPath 兼容书库路径并解码 slug", () => {
    const enc = encodeURIComponent("三体");
    assert.deepEqual(parseEntityPath(`/library/${enc}`), { kind: "libraryDoc", slug: "三体" });
    assert.deepEqual(parseEntityPath(`/library-${enc}.html`), { kind: "libraryDoc", slug: "三体" });
    assert.deepEqual(parseEntityPath("/library.html"), { kind: "library" });
    assert.deepEqual(parseEntityPath("/library/abc/read"), { kind: "libraryRead", slug: "abc" });
    assert.deepEqual(parseEntityPath("/library-abc-read-2.html"), { kind: "libraryRead", slug: "abc" });
  });
});