/*
 * 构建脚本(第二步)
 * 功能：把 src/css/base.css 与各主题(src/css/themes/*.css)拼接为自包含的皮肤产物
 *      输出到 moeplayer/css/(moeplayer.css / moeplayer.red.css / moeplayer.ixigua.css)
 *      用户只需引用一个文件,无需 @import;拼接时自动加上版权注释头
 * 第一步(rollup 打包压缩)见 rollup.config.js,第三步(拷贝运行时依赖)见 scripts/copy-libs.js
 * 用法：npm run build(即 rollup -c && node scripts/build-css.js && node scripts/copy-libs.js)
 */
const fs = require('fs');
const path = require('path');

const root = path.resolve(__dirname, '..');
const cssSrcDir = path.join(root, 'src', 'css');
const cssOutDir = path.join(root, 'moeplayer', 'css');

// 版权注释头(与 rollup 产物头部保持一致)
const header = '/*\n' +
  ' * 软件名称：MoePlayer\n' +
  ' * 版本:X3\n' +
  ' * 版权：MoePlayer 项目(fork 自 ckplayer, www.ckplayer.com)\n' +
  ' * 开源协议：MIT\n' +
  ' * 本文件由 npm run build 自动生成(src/css/base.css + 主题),请勿手动修改\n' +
  ' */\n';

// 皮肤产物清单：[主题文件名, 输出文件名, 皮肤说明]
const themes = [
  ['default.css', 'moeplayer.css', '默认(深色控制条 + 蓝色 accent)'],
  ['red.css', 'moeplayer.red.css', '红色(深色控制条 + 红色 accent)'],
  ['ixigua.css', 'moeplayer.ixigua.css', '西瓜(浅色控制条 + 深色图标 + 红色 accent)']
];

function buildCss() {
  const base = fs.readFileSync(path.join(cssSrcDir, 'base.css'), 'utf8');
  for (const [themeFile, outFile, desc] of themes) {
    const theme = fs.readFileSync(path.join(cssSrcDir, 'themes', themeFile), 'utf8');
    const out = header + base + '\n' + theme;
    fs.writeFileSync(path.join(cssOutDir, outFile), out);
    console.log('生成皮肤: moeplayer/css/' + outFile + ' (' + desc + ')');
  }
}

try {
  buildCss();
  console.log('皮肤构建完成');
} catch (err) {
  console.error('皮肤构建失败:', err);
  process.exit(1);
}