"use strict";

/**
 * 抖音创作者中心发布（对齐 Electron publishToDouyin，Puppeteer 版）
 */
const fs = require("fs");
const { delay } = require("./publish_browser.js");

async function clickIfVisible(page, selector) {
  const el = await page.$(selector);
  if (!el) return false;
  try {
    await el.click();
    return true;
  } catch {
    return false;
  }
}

function isPrimaryPublishLabel(text) {
  const t = String(text || "").replace(/\s+/g, "");
  if (!t.includes("发布")) return false;
  if (t.includes("定时") || t.includes("草稿") || t.includes("取消")) return false;
  return (
    t === "发布" ||
    t === "确定发布" ||
    t === "立即发布" ||
    t.endsWith("发布")
  );
}

async function clickPublishButton(page) {
  const handles = await page.$$('button, [role="button"]');
  for (const btn of handles) {
    let text = "";
    let visible = false;
    try {
      text = await page.evaluate((el) => (el.textContent || "").trim(), btn);
      visible = await page.evaluate((el) => {
        const rect = el.getBoundingClientRect();
        if (rect.width < 2 || rect.height < 2) return false;
        const style = window.getComputedStyle(el);
        return (
          style.display !== "none" &&
          style.visibility !== "hidden" &&
          !el.disabled &&
          el.getAttribute("aria-disabled") !== "true"
        );
      }, btn);
    } catch {
      continue;
    }
    if (!visible || !isPrimaryPublishLabel(text)) continue;
    try {
      await btn.evaluate((el) =>
        el.scrollIntoView({ block: "center", inline: "center" }),
      );
      await delay(300);
      await btn.click();
      return true;
    } catch {
      /* try next */
    }
  }
  return false;
}

async function typeIntoFirst(page, selectors, text) {
  for (const sel of selectors) {
    const el = await page.$(sel);
    if (!el) continue;
    try {
      await el.click({ clickCount: 3 });
      await page.keyboard.down("Control");
      await page.keyboard.press("a");
      await page.keyboard.up("Control");
      await page.keyboard.press("Backspace");
      await el.type(text, { delay: 30 });
      return true;
    } catch {
      /* try next */
    }
  }
  return false;
}

async function publishToDouyin(page, params) {
  const { videoPath, coverPath, title, tags = [], autoPublish } = params;
  if (!fs.existsSync(videoPath)) throw new Error("视频文件不存在");
  if (!fs.existsSync(coverPath)) throw new Error("封面文件不存在");

  globalThis.__native?.emitProgress?.("正在打开抖音上传页…");
  const uploadUrl = "https://creator.douyin.com/creator-micro/content/upload";
  await page.goto(uploadUrl, { waitUntil: "domcontentloaded" });
  await delay(3000);

  let currentUrl = page.url();
  if (currentUrl.includes("login") || currentUrl.includes("passport")) {
    throw new Error("未登录抖音，请先在步骤 07 点击「登录平台」");
  }

  let avatar = await page.$("#header-avatar");
  if (!avatar) {
    await delay(5000);
    avatar = await page.$("#header-avatar");
  }
  if (!avatar) {
    throw new Error("抖音登录已过期，请重新登录");
  }

  if (!page.url().includes("content/upload")) {
    await page.goto(uploadUrl, { waitUntil: "domcontentloaded" });
    await delay(3000);
  }

  globalThis.__native?.emitProgress?.("正在上传视频…");
  await page.waitForSelector('input[type="file"]', { timeout: 60000 });
  const fileInputs = await page.$$('input[type="file"]');
  if (!fileInputs.length) throw new Error("未找到视频上传控件");
  await fileInputs[0].uploadFile(videoPath);
  await delay(5000);

  globalThis.__native?.emitProgress?.("等待视频处理…");
  const start = Date.now();
  let ready = false;
  while (Date.now() - start < 300000 && !ready) {
    const titleBox = await page.$('textarea[placeholder*="标题"], input[placeholder*="标题"]');
    if (titleBox) {
      try {
        const disabled = await page.evaluate((el) => el.disabled, titleBox);
        if (!disabled) ready = true;
      } catch {
        ready = true;
      }
    }
    if (!ready) await delay(2000);
  }

  globalThis.__native?.emitProgress?.("正在上传封面…");
  try {
    await clickIfVisible(page, 'button');
    const buttons = await page.$$("button");
    for (const btn of buttons) {
      const text = await page.evaluate((el) => el.textContent || "", btn);
      if (String(text).includes("选择封面")) {
        await btn.click();
        await delay(2000);
        break;
      }
    }
    const imgInput = await page.$('input[type="file"][accept*="image"]');
    if (imgInput) {
      await imgInput.uploadFile(coverPath);
      await delay(3000);
    }
    const doneBtns = await page.$$("button");
    for (const btn of doneBtns) {
      const text = await page.evaluate((el) => el.textContent || "", btn);
      if (String(text).trim() === "完成") {
        await btn.click();
        await delay(2000);
        break;
      }
    }
  } catch (e) {
    console.warn("封面上传跳过:", e.message);
  }

  globalThis.__native?.emitProgress?.("正在填写标题与话题…");
  const titleText = String(title || "").slice(0, 30);
  await typeIntoFirst(
    page,
    [
      'input[placeholder*="填写作品标题"]',
      'input[placeholder*="标题"]',
      'textarea[placeholder*="标题"]',
    ],
    titleText,
  );

  const tagList = Array.isArray(tags) ? tags : [];
  if (tagList.length) {
    const descOk = await typeIntoFirst(
      page,
      [
        'textarea[placeholder*="描述"]',
        'textarea[placeholder*="简介"]',
        'motion[contenteditable="true"]',
        'div[contenteditable="true"]',
      ],
      "",
    );
    if (descOk) {
      for (const tag of tagList) {
        const t = String(tag).trim();
        if (!t) continue;
        const clean = t.startsWith("#") ? t : `#${t}`;
        await page.keyboard.type(clean, { delay: 40 });
        await page.keyboard.press("Space");
        await delay(400);
      }
    }
  }

  if (!autoPublish) {
    return {
      success: false,
      status: "manual_pending",
      message: "内容已填写，请在浏览器中检查并手动点击发布",
      videoUrl: page.url(),
      keepPageOpen: true,
    };
  }

  globalThis.__native?.emitProgress?.("正在点击发布…");
  const clicked = await clickPublishButton(page);

  if (!clicked) {
    return {
      success: false,
      status: "manual_pending",
      message: "未找到发布按钮，请手动发布",
      videoUrl: page.url(),
      keepPageOpen: true,
    };
  }

  await delay(5000);
  return {
    success: true,
    status: "success",
    message: "已提交发布",
    videoUrl: page.url(),
  };
}

module.exports = { publishToDouyin };