import { defineConfig } from 'vite';
import vue from '@vitejs/plugin-vue';
import { resolve } from 'path';

// https://vitejs.dev/config/
import path from 'path';
import fs from 'fs';

function injectMetaTags() {
  const template = fs.readFileSync(path.resolve('./src/meta-tags-header.html'));

  const templates = [
    resolve('activation.html'),
    resolve('filemanager.html'),
    resolve('index.html'),
    resolve('oidc_login.html'),
    resolve('oidc_error.html'),
    resolve('oidc_interaction_confirm.html'),
    resolve('oidc_interaction_abort.html'),
    resolve('logs.html'),
    resolve('passwordreset.html'),
    resolve('restore.html'),
    resolve('setup.html'),
    resolve('setupaccount.html'),
    resolve('terminal.html'),
  ];

  let config;

  return {
    name: 'inject-meta-tags',
    configResolved(resolvedConfig) {
      config = resolvedConfig;
    },
    transformIndexHtml: {
      handler: function transform(html, ctx) {
        if (!config.isProduction) return html;
        if (templates.indexOf(ctx.filename) === -1) return html;

        html = html.replace(/<head(.*)>/i, `$&\n${template}`);

        return html;
      }
    },
  };
}

export default defineConfig({
  plugins: [
    vue(),
    injectMetaTags(),
  ],
  server: {
    fs: {
      // Allow serving files from one level up to the project root for monaco editor assets
      allow: [ '../../../' ]
    },
  },
  // https://vitejs.dev/guide/build.html#multi-page-app
  build: {
    rollupOptions: {
      input: {
        activation: resolve('activation.html'),
        appstatus: resolve('appstatus.html'),
        authcallback: resolve('authcallback.html'),
        filemanager: resolve('filemanager.html'),
        index: resolve('index.html'),
        oidc_login: resolve('oidc_login.html'),
        oidc_error: resolve('oidc_error.html'),
        oidc_interaction_confirm: resolve('oidc_interaction_confirm.html'),
        oidc_interaction_abort: resolve('oidc_interaction_abort.html'),
        logs: resolve('logs.html'),
        notfound: resolve('notfound.html'),
        passwordreset: resolve('passwordreset.html'),
        restore: resolve('restore.html'),
        setup: resolve('setup.html'),
        setupaccount: resolve('setupaccount.html'),
        terminal: resolve('terminal.html'),
      },
    },
  },
});