import "./install-test-document";
import assert from "node:assert/strict";
import { readFileSync } from "node:fs";
import test from "node:test";
import React from "react";
import { toast } from "sonner";
import { ReportExportDrawer } from "../src/components/personal-report/report-export-drawer";
import { ReportActions } from "../src/components/personal-report/report-actions";
import { buildReportExportBlocks, exportByteSize, exportFilename, formatExportSize, joinExportBlocks } from "../src/lib/report-export-blocks";
import { assembleReportFactTables } from "../src/lib/report-fact-tables";
import { createClientLifecycleHarness } from "./react-client-lifecycle-test-support";

Object.assign(globalThis, { React });
const reader = JSON.parse(readFileSync(new URL("./fixtures/report-density-fictional-reader.json", import.meta.url), "utf8"));
const engine = JSON.parse(readFileSync(new URL("./fixtures/report-density-fictional-engine.json", import.meta.url), "utf8"));
const blocks = buildReportExportBlocks({ markdown: reader.markdown, factTables: assembleReportFactTables(engine) });
const editions = { zh: blocks };
const source = readFileSync(new URL("../src/components/personal-report/report-export-drawer.tsx", import.meta.url), "utf8");
const styles = readFileSync(new URL("../src/app/globals.css", import.meta.url), "utf8");
// Opening a sheet without English notifies. Keep the real toaster out of these mounts.
toast.info = () => 1;

type Harness = ReturnType<typeof createClientLifecycleHarness>;
type Node = ReturnType<Harness["elements"]>[number];
// Sheet, tabs and menus portal onto document.body. The harness container walk misses them.
function allNodes(h: Harness): Node[] {
  const walk = (node: Node): Node[] => {
    const children = node?.childNodes ?? [];
    return [node, ...[...children].flatMap((child) => walk(child as Node))];
  };
  return [...walk(h.container as unknown as Node), ...[...(h.document.body.childNodes ?? [])].flatMap((child) => walk(child as Node))];
}
const button = (h: Harness, text: string) => { const node = allNodes(h).find(node => node.tagName === "BUTTON" && node.text.startsWith(text)); assert.ok(node, text); return node; };
const checks = (h: Harness) => allNodes(h).filter(node => node.getAttribute("role") === "checkbox");
const namedCheck = (h: Harness, label: string) => {
  const node = checks(h).find(node => (node.getAttribute("aria-label") ?? "").startsWith(label));
  assert.ok(node, label);
  return node;
};
// 原值：单选是 role=radio + aria-checked
// 新值：分段页签 role=tab。选中看 aria-selected
// 原因：K5 / D9，导出语言和导出范围改用和星盘页盘型条一样的 Tabs
const tab = (h: Harness, text: string) => { const node = allNodes(h).find(node => node.getAttribute("role") === "tab" && node.text.startsWith(text)); assert.ok(node, text); return node; };
const exportButton = (h: Harness) => allNodes(h).filter(node => node.tagName === "BUTTON").find(node => /^导出|^先勾选/.test(node.text))!;
const sheetOpen = (h: Harness) => allNodes(h).some(node => node.getAttribute("role") === "dialog" || node.getAttribute("data-slot") === "sheet-content");
const sheetText = (h: Harness) => `${h.container.text}\n${h.document.body.text}`;

// 2026-09-30 redesign (product: 「分块导出太丑，需要重新设计」, chose 「两步：整篇 / 自选」).
// Test names are kept for suite continuity; the presets 常用 / 全部分盘 / 仅核对表 and
// 全选 are retired. Each rewritten test states 原值 / 新值 / 原因 at its head.

test("drawer mounts all golden blocks, presets replace selection and manual choices clear highlight", async () => {
  // 原值：打开即列出全部块（默认勾正文），套餐按钮替换选择，手动勾选清除套餐高亮
  // 新值：打开是「整篇报告」一步导出（全部块）；选「自选章节」才出现清单，正文默认全勾、分组复选框可整组开关，分盘/核对表默认收起
  // 原因：2026-09-30 产品重设计；主语（能拿到全部块、能按组与逐块选择）不变
  const h = createClientLifecycleHarness();
  try {
    await h.render(<ReportExportDrawer editions={editions} onClose={() => {}} />);
    assert.deepEqual(h.errors, []);
    // 原值：原生 DIALOG 的 open 为真，按钮写「导出整篇 · 约 N KB」
    // 新值：Sheet 在文档里；按钮只写「导出整篇」，不带文件大小
    // 原因：K5 导出改用 Sheet，D8 去掉文件大小
    assert.equal(sheetOpen(h), true);
    assert.equal(checks(h).length, 0, "no checklist until 自选章节");
    assert.equal(tab(h, "整篇报告").getAttribute("aria-selected"), "true");
    assert.equal(exportButton(h).text, "导出整篇");
    assert.doesNotMatch(exportButton(h).text, /KB|MB|·/);
    await h.event(tab(h, "自选章节"));
    const body = blocks.filter(block => block.group === "body");
    // Group rows (3) + the expanded 正文 rows.
    assert.equal(checks(h).length, 3 + body.length);
    assert.equal(checks(h).filter(node => node.getAttribute("aria-checked") === "true").length, 1 + body.length);
    const chartGroup = namedCheck(h, "分盘");
    assert.equal(chartGroup.getAttribute("aria-checked"), "false");
    await h.event(chartGroup);
    assert.equal(namedCheck(h, "分盘").getAttribute("aria-checked"), "true");
    await h.event(namedCheck(h, body[0]!.title));
    assert.equal(namedCheck(h, "正文").getAttribute("aria-checked"), "mixed");
    for (const group of ["正文", "分盘", "核对表"]) {
      const row = namedCheck(h, group);
      if (row.getAttribute("aria-checked") === "true") await h.event(row);
      if (namedCheck(h, group).getAttribute("aria-checked") === "mixed") {
        await h.event(namedCheck(h, group));
        await h.event(namedCheck(h, group));
      }
    }
    assert.equal(exportButton(h).text, "先勾选要导出的部分");
    assert.equal(exportButton(h).disabled, true);
  } finally { await h.close(); }
});

test("drawer download uses the existing Blob downloader exactly once and only then closes", async () => {
  // 原值：选「仅核对表」后按「导出选中 (8)」，toast「已导出 8 块」，文件名为节选
  // 新值：自选里只开「核对表」组、关掉正文组后按「导出 8 项 · …」，toast「已导出」，文件名为节选；内容仍是这些块逐字节拼接
  // 原因：2026-09-30 重设计去掉套餐
  const h = createClientLifecycleHarness();
  const oldCreate = URL.createObjectURL;
  const oldRevoke = URL.revokeObjectURL;
  let blob: Blob | undefined;
  let clicked = 0;
  let closed = 0;
  const successBefore = toast.success;
  const successes: string[] = [];
  toast.success = message => { assert.equal(closed, 1); successes.push(String(message)); return 1; };
  let filename = "";
  const document = globalThis.document;
  const originalCreate = document.createElement.bind(document);
  URL.createObjectURL = value => { blob = value as Blob; return "blob:test"; };
  URL.revokeObjectURL = () => {};
  // 原值：把 document.body 换成只有 append 的空对象，挡住原生下载
  // 新值：留下测试文档的 body。锚点仍是假的，body.append 对它不做事
  // 原因：K5 的 Sheet 要挂到 body 上。换掉 body 后传送门和下载都看不见
  document.createElement = ((tag: string) => {
    if (tag !== "a") return originalCreate(tag);
    return { set download(value: string) { filename = value; }, click() { clicked += 1; }, remove() {} } as unknown as HTMLAnchorElement;
  }) as typeof document.createElement;
  try {
    await h.render(<ReportExportDrawer editions={editions} reportDate="2026-09-24" onClose={() => { closed += 1; }} />);
    await h.event(tab(h, "自选章节"));
    await h.event(namedCheck(h, "正文"));
    await h.event(namedCheck(h, "核对表"));
    const tables = blocks.filter(block => block.group === "table");
    await h.event(button(h, `导出 ${tables.length} 项`));
    assert.equal(clicked, 1);
    assert.equal(closed, 1);
    assert.deepEqual(successes, ["已导出"]);
    assert.equal(filename, exportFilename("2026-09-24", false) + ".md");
    assert.equal(await blob?.text(), joinExportBlocks(tables));
  } finally { toast.success = successBefore; URL.createObjectURL = oldCreate; URL.revokeObjectURL = oldRevoke; await h.close(); }
});

test("download failure and WeChat restrictions leave drawer open without a success close", async () => {
  // 原值：按「导出整篇 · …」；新值：按「导出整篇」；原因：K5 / D8 去掉文件大小。失败与微信限制的行为不变
  const h = createClientLifecycleHarness();
  const oldCreate = URL.createObjectURL;
  const navigatorDescriptor = Object.getOwnPropertyDescriptor(globalThis, "navigator");
  const successBefore = toast.success;
  const errorBefore = toast.error;
  let successes = 0;
  const errors: string[] = [];
  toast.success = () => { successes += 1; return 1; };
  toast.error = (message) => { errors.push(String(message)); return 1; };
  let closed = 0;
  try {
    await h.render(<ReportExportDrawer editions={editions} onClose={() => { closed += 1; }} />);
    URL.createObjectURL = () => { throw new Error("下载失败"); };
    await h.event(button(h, "导出整篇"));
    // 原值: h.container.text 含「下载失败」/「系统浏览器」（抽屉底部 role="alert" 一行）
    // 新值: 两句都是 error toast；抽屉仍开着、没有成功提示（主语不变）
    // 原因: 2026-09-30 产品「报错和提示不要占页面布局」
    assert.equal(errors.at(-1), "下载失败");
    Object.defineProperty(globalThis, "navigator", { configurable: true, value: { userAgent: "MicroMessenger" } });
    await h.event(button(h, "导出整篇"));
    assert.match(errors.at(-1) ?? "", /系统浏览器/);
    assert.equal(closed, 0);
    assert.equal(successes, 0);
    assert.equal(sheetOpen(h), true);
  } finally {
    toast.success = successBefore;
    toast.error = errorBefore;
    URL.createObjectURL = oldCreate;
    if (navigatorDescriptor) Object.defineProperty(globalThis, "navigator", navigatorDescriptor); else Reflect.deleteProperty(globalThis, "navigator");
    await h.close();
  }
});

test("reader actions keep only the accessible export icon", async () => {
  const h = createClientLifecycleHarness();
  try {
    Object.assign(window, { location: { hash: "#export" }, history: { replaceState() { assert.fail("retired export hash must not be consumed"); } } });
    await h.render(<ReportActions markdown={reader.markdown} />);
    assert.equal(sheetOpen(h), false, "old export hash does not auto-open the sheet");
    assert.equal(h.elements().filter(node => node.tagName === "BUTTON").length, 1);
    assert.ok(h.elements().some(node => node.tagName === "A" && node.getAttribute("href") === "/reports"));
    assert.deepEqual(h.errors, []);
    const exportButton = h.elements().find(node => node.tagName === "BUTTON" && node.getAttribute("aria-label") === "导出报告");
    assert.ok(exportButton);
    // 原值：`title` 属性等于「导出」（只有图标的按钮靠原生提示说明用途）
    // 新值：按钮自己的可见文字就是「导出」，不再挂 title
    // 原因：TASK-report-reader-polish-20260929 §3-3——产品反馈图标按钮找不到，改为带文字的描边按钮
    assert.equal(exportButton?.text, "导出");
    assert.equal(exportButton?.getAttribute("title"), null);
    assert.ok(!h.container.text.includes("下载原始附录"));
    assert.ok(!h.container.text.includes("打印"));
    await h.event(exportButton!);
    assert.equal(sheetOpen(h), true);
    // 原值：按可见文字「关闭」找按钮；新值：按读屏名「关闭导出」找（2026-09-30 改成 × 图标，标题改「导出报告」）
    await h.event(allNodes(h).find(node => node.tagName === "BUTTON" && node.getAttribute("aria-label") === "关闭导出")!);
    await h.idle();
    assert.equal(sheetOpen(h), false);
  } finally { await h.close(); }
});

type DomListener = { type: string; fn: (event: Record<string, unknown>) => void; capture: boolean };

function captureFlag(options: unknown): boolean {
  return options === true || (typeof options === "object" && options !== null && Boolean((options as { capture?: boolean }).capture));
}

function trackDocumentListeners(target: object): DomListener[] {
  const bag: DomListener[] = [];
  const host = target as {
    addEventListener: (type: string, fn: DomListener["fn"], options?: unknown) => void;
    removeEventListener: (type: string, fn: DomListener["fn"]) => void;
  };
  host.addEventListener = (type, fn, options) => { bag.push({ type, fn, capture: captureFlag(options) }); };
  host.removeEventListener = (type, fn) => {
    const index = bag.findIndex((entry) => entry.type === type && entry.fn === fn);
    if (index >= 0) bag.splice(index, 1);
  };
  return bag;
}

type DomListenerHandle = (type: string, fn: DomListener["fn"], options?: unknown) => void;

function trackElementListeners(proto: { addEventListener: DomListenerHandle; removeEventListener: DomListenerHandle }) {
  const bags = new WeakMap<object, DomListener[]>();
  const originalAdd = proto.addEventListener;
  const originalRemove = proto.removeEventListener;
  proto.addEventListener = function (this: object, type: string, fn: DomListener["fn"], options?: unknown) {
    const bag = bags.get(this) ?? [];
    if (!bags.has(this)) bags.set(this, bag);
    bag.push({ type, fn, capture: captureFlag(options) });
  };
  proto.removeEventListener = function (this: object, type: string, fn: DomListener["fn"]) {
    const bag = bags.get(this);
    if (!bag) return;
    const index = bag.findIndex((entry) => entry.type === type && entry.fn === fn);
    if (index >= 0) bag.splice(index, 1);
  };
  return {
    bag(target: object) { return bags.get(target) ?? []; },
    restore() {
      proto.addEventListener = originalAdd;
      proto.removeEventListener = originalRemove;
    },
  };
}

function fireListeners(bag: readonly DomListener[], type: string, event: Record<string, unknown>, capture: boolean) {
  for (const entry of bag.filter((item) => item.type === type && item.capture === capture)) entry.fn(event);
}

test("mounted drawer closes from Escape and the overlay, and restores focus", async () => {
  // 原值：原生 dialog 的 onCancel（Esc）和点遮罩（target === currentTarget）各关一次；内部点「整篇报告」不关闭
  // 新值：点「整篇报告」不关闭；按 Esc 关一次；点遮罩再关一次；卸载后焦点回到打开前的按钮
  // 原因：K5 导出改用 Sheet。Esc 走浮层自己的按键处理，点遮罩走文档上的捕获监听，不再用源码正则代替
  const h = createClientLifecycleHarness(); let closes = 0;
  const previous = document.createElement("button"); previous.focus();
  const documentListeners = trackDocumentListeners(h.document);
  const elementListeners = trackElementListeners(Object.getPrototypeOf(h.document.body) as { addEventListener: DomListenerHandle; removeEventListener: DomListenerHandle });
  try {
    await h.render(<ReportExportDrawer editions={editions} onClose={() => { closes += 1; }} />);
    await h.event(tab(h, "整篇报告")); assert.equal(closes, 0);
    await h.idle();
    const sheet = allNodes(h).find(node => node.getAttribute("data-slot") === "sheet-content");
    assert.ok(sheet);
    await h.event(sheet, "onKeyDown", { key: "Escape" });
    assert.equal(closes, 1);
    const overlay = allNodes(h).find(node => node.getAttribute("data-slot") === "sheet-overlay");
    assert.ok(overlay);
    const click = {
      type: "click",
      target: overlay,
      currentTarget: h.document,
      button: 0,
      composedPath: () => [overlay],
      preventDefault() {},
      stopPropagation() {},
    };
    await h.update(() => {
      fireListeners(documentListeners, "click", click, true);
      fireListeners(elementListeners.bag(overlay), "click", click, false);
    });
    assert.equal(closes, 2);
    // 原值（365a623fc）：删掉了点「关闭导出」关一次的断言
    // 新值：补回，点「关闭导出」再关一次
    // 原因：按钮还在页面上，是用户最常用的关法；只测 Esc 和遮罩会漏掉它（第 2 轮验收第 4 条）
    await h.event(allNodes(h).find(node => node.getAttribute("aria-label") === "关闭导出")!);
    assert.equal(closes, 3);
    await h.render(null); assert.equal(document.activeElement, previous);
  } finally { elementListeners.restore(); await h.close(); }
});

test("drawer contract uses a sheet from the right or the bottom, and the list still scrolls", () => {
  // 原值：原生 `<dialog>`、onCancel、点遮罩 target === currentTarget；窄屏 bottom inset 与桌面居中 min(520px)
  // 新值：`<Sheet`，onOpenChange 在 open 为 false 时 onClose；桌面 data-side=right 宽 min(520px, 92vw)，窄屏 data-side=bottom 最高 85dvh
  // 原因：K5 导出从右侧滑出，手机从底部滑出。滚动仍在正文，头尾不滚走
  assert.match(source, /<Sheet open onOpenChange=\{\(open\) => \{ if \(!open\) onClose\(\); \}\}/);
  assert.match(source, /side=\{side\}/);
  assert.match(source, /max-width: 767px/);
  assert.doesNotMatch(source, /<dialog|onCancel=|InlineSpinner|navigator\.clipboard|fetch\(/);
  const css = styles.slice(styles.indexOf(".report-export-drawer {"), styles.indexOf("personal-report: unique block"));
  assert.doesNotMatch(css, /var\(--report-(?:paper|rule|accent)\)/);
  assert.match(css, /min-height: 44px/);
  // 原值：窄屏在 @media 之前用 bottom inset、85vh 和 85dvh；桌面 @media (min-width: 860px) 居中，宽 min(520px, 92vw)，高 80vh
  // 新值：窄屏是 data-side=bottom，高 85dvh，上圆角；桌面是 data-side=right，宽 min(520px, 92vw)，最宽 520px
  // 原因：K5 用 Sheet 的 side 区分桌面和手机，不再用原生 dialog 的媒体查询。vh 和 dvh 不再写在同一条规则里
  assert.match(css, /\.report-export-drawer\[data-side="right"\] \{[^}]*width: min\(520px, 92vw\);/);
  assert.match(css, /\.report-export-drawer\[data-side="right"\] \{[^}]*max-width: 520px;/);
  assert.match(css, /\.report-export-drawer\[data-side="bottom"\] \{[^}]*max-height: 85dvh;/);
  assert.match(css, /\.report-export-drawer\[data-side="bottom"\] \{[^}]*border-radius: var\(--radius-lg\) var\(--radius-lg\) 0 0;/);
  assert.match(css, /\.report-export-body \{[^}]*min-height: 0;[^}]*overflow-y: auto;/);
  assert.match(css, /\.report-export-header \{[^}]*flex-shrink: 0;/);
  assert.match(css, /\.report-export-footer \{[^}]*flex-shrink: 0;/);
});

test("an unavailable English edition is one info toast per open, not a caption", async () => {
  const legacy = "这份报告生成于英文版上线前，重新生成即可获得中英两版。";
  const failed = "这份报告的英文版没有生成成功，只能导出中文版。";
  const infos: { message: string; id?: string | number }[] = [];
  const previous = toast.info;
  const h = createClientLifecycleHarness();
  toast.info = (message, options) => {
    assert.equal(sheetOpen(h), true, "notify after the sheet is open");
    infos.push({ message: String(message), id: options?.id });
    return infos.length;
  };
  try {
    await h.render(<ReportExportDrawer editions={editions} onClose={() => {}} englishEdition="legacy" />);
    assert.deepEqual(infos, [{ message: legacy, id: "report-export-english" }]);
    assert.equal(h.container.text.includes(legacy), false);
    assert.equal(h.container.text.includes(failed), false);
    await h.event(tab(h, "自选章节"));
    const chapter = blocks.find(block => block.group === "body")!;
    await h.event(namedCheck(h, chapter.title));
    await h.event(namedCheck(h, chapter.title));
    const expand = allNodes(h).find(node => node.getAttribute("aria-label") === "展开分盘");
    assert.ok(expand, "展开分盘");
    await h.event(expand);
    assert.equal(infos.length, 1, "picking chapters does not notify again");
    await h.render(null);
    await h.render(<ReportExportDrawer editions={editions} onClose={() => {}} englishEdition="legacy" />);
    assert.equal(infos.length, 2, "opening again notifies once more");
    assert.equal(infos[1]?.id, "report-export-english");

    await h.render(null);
    await h.render(<ReportExportDrawer editions={editions} onClose={() => {}} englishEdition="unavailable" />);
    assert.equal(infos.length, 3);
    assert.deepEqual(infos[2], { message: failed, id: "report-export-english" });
    assert.equal(h.container.text.includes(failed), false);
    assert.equal(h.container.text.includes(legacy), false);

    await h.render(null);
    await h.render(<ReportExportDrawer editions={{ zh: blocks, en: blocks }} onClose={() => {}} englishEdition="ready" />);
    assert.equal(infos.length, 3, "a ready English edition does not notify");
    // 原值：英文可用时抽屉正文含「建议选 English」
    // 新值：没有这句说明
    // 原因：K5 / D8 删掉说明句
    assert.equal(sheetText(h).includes("建议选 English"), false);
  } finally {
    toast.info = previous;
    await h.close();
  }
});

test("the drawer shows the real download size, not a character count (BUG-1094)", async () => {
  const body = blocks.filter(block => block.group === "body");
  const charts = blocks.filter(block => block.group === "chart");
  assert.ok(charts.length > 0, "golden carries chart blocks");
  // Exact bytes of what downloadMarkdownReport would receive.
  assert.equal(exportByteSize(body), new TextEncoder().encode(joinExportBlocks(body)).length);
  assert.equal(exportByteSize([]), 0);
  // Chinese is three bytes a character, so bytes run past the character count.
  const bodyChars = body.reduce((sum, block) => sum + block.chars, 0);
  assert.ok(exportByteSize(body) > bodyChars);
  assert.equal(formatExportSize(186 * 1024), "约 186 KB");
  assert.equal(formatExportSize(300), "约 1 KB");
  assert.equal(formatExportSize(Math.round(1.44 * 1024 * 1024)), "约 1.4 MB");
  // 原值：大小只在导出按钮上出现一次（整篇 = 全部块，自选 = 所选块）
  // 新值：按钮只写「导出整篇」或「导出 N 项」，页面上看不到「约 N KB」
  // 原因：K5 / D8 去掉文件大小。字节计算仍由上面的断言锁住
  const h = createClientLifecycleHarness();
  try {
    await h.render(<ReportExportDrawer editions={editions} onClose={() => {}} />);
    assert.equal(exportButton(h).text, "导出整篇");
    assert.doesNotMatch(sheetText(h), /约 \d| KB| MB/);
    await h.event(tab(h, "自选章节"));
    assert.equal(exportButton(h).text, `导出 ${body.length} 项`);
    assert.doesNotMatch(sheetText(h), /约 \d| KB| MB/);
  } finally { await h.close(); }
});