import esbuild from 'esbuild';
import builtins from 'builtin-modules';
import { copyFileSync, mkdirSync, existsSync } from 'fs';
import { join } from 'path';

const banner = `/*
THIS IS A GENERATED/BUNDLED FILE BY ESBUILD
if you want to view the source, please visit the github repository of this plugin
*/
`;

const prod = process.argv[2] === 'production';

const buildDir = 'build';

// Create build directory if it doesn't exist
if (!existsSync(buildDir)) {
    mkdirSync(buildDir);
}

// Copy manifest and styles
copyFileSync('manifest.json', join(buildDir, 'manifest.json'));
if (existsSync('styles.css')) {
    copyFileSync('styles.css', join(buildDir, 'styles.css'));
}

try {
    await esbuild.build({
        banner: {
            js: banner,
        },
        entryPoints: ['src/main.ts'],
        bundle: true,
        external: [
            'obsidian',
            'electron',
            '@codemirror/autocomplete',
            '@codemirror/collab',
            '@codemirror/commands',
            '@codemirror/language',
            '@codemirror/lint',
            '@codemirror/search',
            '@codemirror/state',
            '@codemirror/view',
            '@lezer/common',
            '@lezer/highlight',
            '@lezer/lr',
            ...builtins
        ],
        format: 'cjs',
        target: 'es2018',
        logLevel: 'info',
        sourcemap: prod ? false : 'inline',
        treeShaking: true,
        outfile: join(buildDir, 'main.js'),
        minify: prod,
        platform: 'node',
        mainFields: ['browser', 'module', 'main'],
        write: true,
        allowOverwrite: true,
    });
} catch (error) {
    console.error('Build failed:', error);
    process.exit(1);
}