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");

type Harness = ReturnType<typeof createClientLifecycleHarness>;
const button = (h: Harness, text: string) => { const node = h.elements().find(node => node.tagName === "BUTTON" && node.text.startsWith(text)); assert.ok(node, text); return node; };
const checks = (h: Harness) => h.elements().filter(node => node.getAttribute("role") === "checkbox");
const radio = (h: Harness, text: string) => { const node = h.elements().find(node => node.getAttribute("role") === "radio" && node.text.startsWith(text)); assert.ok(node, text); return node; };
const exportButton = (h: Harness) => h.elements().filter(node => node.tagName === "BUTTON").find(node => /^导出|^先勾选/.test(node.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, []);
    assert.ok(h.elements().find(node => node.tagName === "DIALOG")?.open);
    assert.equal(checks(h).length, 0, "no checklist until 自选章节");
    assert.equal(radio(h, "整篇报告").getAttribute("aria-checked"), "true");
    assert.equal(exportButton(h).text, `导出整篇 · ${formatExportSize(exportByteSize(blocks))}`);
    await h.event(radio(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 = checks(h).find(node => node.text.startsWith("分盘"))!;
    assert.equal(chartGroup.getAttribute("aria-checked"), "false");
    await h.event(chartGroup);
    assert.equal(checks(h).find(node => node.text.startsWith("分盘"))!.getAttribute("aria-checked"), "true");
    await h.event(checks(h).find(node => node.text.startsWith(body[0]!.title))!);
    assert.equal(checks(h).find(node => node.text.startsWith("正文"))!.getAttribute("aria-checked"), "mixed");
    for (const group of ["正文", "分盘", "核对表"]) {
      const row = checks(h).find(node => node.text.startsWith(group))!;
      if (row.getAttribute("aria-checked") === "true") await h.event(row);
      if (checks(h).find(node => node.text.startsWith(group))!.getAttribute("aria-checked") === "mixed") {
        await h.event(checks(h).find(node => node.text.startsWith(group))!);
        await h.event(checks(h).find(node => node.text.startsWith(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 = () => {};
  Object.assign(document, { body: { append() {} } });
  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(radio(h, "自选章节"));
    await h.event(checks(h).find(node => node.text.startsWith("正文"))!);
    await h.event(checks(h).find(node => node.text.startsWith("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「导出选中 (正文块数)」；新值：按「导出整篇 · …」；原因：2026-09-30 重设计，失败与微信限制的行为断言不变
  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.ok(h.elements().find(node => node.tagName === "DIALOG")?.open);
  } 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.ok(!h.elements().some(node => node.tagName === "DIALOG"), "old export hash does not auto-open the dialog");
    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.ok(h.elements().some(node => node.tagName === "DIALOG"));
    // 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(h.elements().find(node => node.tagName === "BUTTON" && node.getAttribute("aria-label") === "关闭导出")!);
    await h.idle();
    assert.ok(!h.elements().some(node => node.tagName === "DIALOG"));
  } finally { await h.close(); }
});

test("mounted drawer handles Escape and backdrop but not inner clicks and restores focus", async () => {
  // 原值：内部点击目标是「常用」套餐按钮；新值：「整篇报告」单选；原因：套餐已删除
  const h = createClientLifecycleHarness(); let closes = 0;
  const previous = document.createElement("button"); previous.focus();
  try {
    await h.render(<ReportExportDrawer editions={editions} onClose={() => { closes += 1; }} />);
    const dialog = h.elements().find(node => node.tagName === "DIALOG")!;
    await h.event(dialog, "onClick", { target: radio(h, "整篇报告") }); assert.equal(closes, 0);
    await h.event(dialog, "onCancel"); assert.equal(closes, 1);
    await h.event(dialog); assert.equal(closes, 2);
    await h.render(null); assert.equal(document.activeElement, previous);
  } finally { await h.close(); }
});

test("drawer contract uses native dialog, Escape/backdrop close and only allowed responsive chrome", () => {
  assert.match(source, /<dialog/);
  assert.match(source, /onCancel=/);
  assert.match(source, /event.target === event.currentTarget/);
  assert.doesNotMatch(source, /InlineSpinner|navigator\.clipboard|fetch\(/);
  const css = styles.slice(styles.indexOf(".report-export-drawer {"), styles.indexOf("personal-report: unique block"));
  assert.match(css, /min-width: 860px/);
  assert.doesNotMatch(css, /var\(--report-(?:paper|rule|accent)\)/);
  assert.match(css, /min-height: 44px/);
  const narrow = css.slice(0, css.indexOf("@media (min-width: 860px)"));
  assert.match(narrow, /inset: auto 0 0 var\(--report-export-sidebar\)/);
  assert.match(narrow, /width: min\(760px, calc\(\(100% - var\(--report-export-sidebar\)\) \* \.92\)\)/);
  assert.match(narrow, /margin: 0 auto/);
  assert.match(narrow, /border-radius: var\(--radius-lg\) var\(--radius-lg\) 0 0/);
  // 原值：窄屏抽屉 `max-height: 70vh` / `70dvh`
  // 新值：`85vh` / `85dvh`
  // 原因：2026-09-30 产品真机：手机上头部占掉大半，分块列表看不见；头部压缩后再给列表更多高度（桌面 80vh 不变）
  assert.match(narrow, /max-height: 85vh/);
  assert.match(narrow, /@supports \(height: 1dvh\)\s*\{\s*\.report-export-drawer, \.report-export-panel \{ max-height: 85dvh;/);
  const desktopStart = css.indexOf("@media (min-width: 860px)");
  const desktop = css.slice(desktopStart);
  // 原值：桌面 `width: min(720px, 92vw)`；新值：`min(520px, 92vw)`；原因：2026-09-30 重设计后是单列的紧凑面板，720 宽只剩空白
  assert.match(desktop, /\.report-export-drawer\s*\{\s*inset: 0;\s*width: min\(520px, 92vw\);\s*max-height: 80vh;\s*margin: auto;\s*border-radius: var\(--radius-lg\);/);
  assert.match(desktop, /\.report-export-panel \{ max-height: calc\(80vh - 2px\); \}/);
  // 原值 70(d)vh → 新值 85(d)vh：窄屏上限改为 85 后，桌面仍不得继承窄屏上限（原因同上）
  assert.doesNotMatch(desktop, /max-height: 85(?:d)?vh|inset:.*--report-export-sidebar/);
  // 原值：`.report-export-list` 负责滚动、头尾 `flex-shrink: 0`
  // 新值：滚动区是 `.report-export-body`（语言、范围与清单在同一滚动区），头尾仍 `flex-shrink: 0`
  // 原因：2026-09-30 重设计，清单只在「自选」时出现
  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("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：统计行同时显示全篇与已选大小；新值：大小只在导出按钮上出现一次（整篇 = 全部块，自选 = 所选块）
  // 原因：2026-09-30 重设计，统计行删除
  const h = createClientLifecycleHarness();
  try {
    await h.render(<ReportExportDrawer editions={editions} onClose={() => {}} />);
    assert.equal(exportButton(h).text, `导出整篇 · ${formatExportSize(exportByteSize(blocks))}`);
    await h.event(radio(h, "自选章节"));
    assert.equal(exportButton(h).text, `导出 ${body.length} 项 · ${formatExportSize(exportByteSize(body))}`);
  } finally { await h.close(); }
});