/**
 * Vite Configuration for Vendoring JavaScript Libraries
 * 
 * This config is used by Hugo Blox maintainers to copy third-party
 * JavaScript libraries from node_modules into the Hugo module's assets.
 * 
 * Usage: pnpm run vendor:libs
 */

import { defineConfig } from 'vite';
import { viteStaticCopy } from 'vite-plugin-static-copy';
import { resolve } from 'path';
import del from 'rollup-plugin-delete';

const MODULE_DIR = 'modules/blox-tailwind';
const OUTPUT_DIR = resolve(MODULE_DIR, 'assets/dist/lib');

export default defineConfig({
  build: {
    emptyOutDir: true,
    outDir: OUTPUT_DIR,
    lib: {
      entry: resolve(MODULE_DIR, 'assets/js/vendor-libs.js'),
      formats: ['es'],
      fileName: 'vendor-libs'
    },
    rollupOptions: {
      // Don't bundle these libraries, just copy them
      external: ['mermaid', 'plotly.js', 'katex', 'markmap-autoloader'],
    }
  },
  
  plugins: [
    // Copy vendor libraries to module assets
    viteStaticCopy({
      targets: [
        // Mermaid - Diagram rendering
        {
          src: 'node_modules/mermaid/dist/mermaid.min.js',
          dest: 'mermaid/'
        },
        
        // Plotly - Interactive charts
        {
          src: 'node_modules/plotly.js/dist/plotly.min.js',
          dest: 'plotly/'
        },
        
        // KaTeX - Math rendering
        {
          src: 'node_modules/katex/dist/katex.min.js',
          dest: 'katex/'
        },
        {
          src: 'node_modules/katex/dist/katex.min.css',
          dest: 'katex/'
        },
        {
          src: 'node_modules/katex/dist/contrib/auto-render.min.js',
          dest: 'katex/'
        },
        {
          src: 'node_modules/katex/dist/fonts/',
          dest: 'katex/'
        },
        
        // Markmap - Mind map rendering
        {
          src: 'node_modules/markmap-autoloader/dist/index.js',
          dest: 'markmap/',
          rename: 'markmap-autoloader.min.js'
        }
      ]
    }),
    
    // Clean up any unwanted build artifacts
    del({
      targets: `${OUTPUT_DIR}/vendor-libs.js`, // Remove the dummy entry file
      hook: 'writeBundle'
    })
  ]
});