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import fs from 'node:fs';
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import { join } from 'node:path';
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import { fileURLToPath } from 'node:url';
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import { readPackageJSON } from '@vben/node-utils';
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import { type PluginOption } from 'vite';
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/**
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* 用于生成将loading样式注入到项目中
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* 为多app提供loading样式，无需在每个 app -> index.html单独引入
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*/
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async function viteInjectAppLoadingPlugin(
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isBuild: boolean,
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env: Record<string, any> = {},
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loadingTemplate = 'loading.html',
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): Promise<PluginOption | undefined> {
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const loadingHtml = await getLoadingRawByHtmlTemplate(loadingTemplate);
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const { version } = await readPackageJSON(process.cwd());
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const envRaw = isBuild ? 'prod' : 'dev';
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const cacheName = `'${env.VITE_APP_NAMESPACE}-${version}-${envRaw}-preferences-theme'`;
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// 获取缓存的主题
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// 保证黑暗主题下，刷新页面时，loading也是黑暗主题
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const injectScript = `
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<script data-app-loading="inject-js">
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var theme = localStorage.getItem(${cacheName});
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document.documentElement.classList.toggle('dark', /dark/.test(theme));
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</script>
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`;
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if (!loadingHtml) {
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return;
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}
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return {
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enforce: 'pre',
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name: 'vite:inject-app-loading',
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transformIndexHtml: {
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handler(html) {
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const re = /<body\s*>/;
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html = html.replace(re, `<body>${injectScript}${loadingHtml}`);
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return html;
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},
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order: 'pre',
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},
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};
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}
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/**
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* 用于获取loading的html模板
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*/
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async function getLoadingRawByHtmlTemplate(loadingTemplate: string) {
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const __dirname = fileURLToPath(new URL('.', import.meta.url));
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const defaultLoadingPath = join(__dirname, './default-loading.html');
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// 支持在app内自定义loading模板，模版参考default-loading.html即可
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const appLoadingPath = join(process.cwd(), loadingTemplate);
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let loadingPath = defaultLoadingPath;
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if (fs.existsSync(appLoadingPath)) {
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loadingPath = appLoadingPath;
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return;
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}
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const htmlRaw = fs.readFileSync(loadingPath, 'utf8');
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return htmlRaw;
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}
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export { viteInjectAppLoadingPlugin };
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