import react from '@vitejs/plugin-react';
import {readdirSync, readFileSync, statSync} from 'node:fs';
import {extname, resolve, sep} from 'node:path';
import {fileURLToPath, URL} from 'node:url';
import {defineConfig, type Plugin} from 'vite';
const output_dir = fileURLToPath(new URL('../frontend_dist', import.meta.url));
const cache_dir = fileURLToPath(new URL('./node_modules/.vite-adminive', import.meta.url));
const amis_sdk_dir = fileURLToPath(new URL('./node_modules/amis/sdk', import.meta.url));
const amis_package = JSON.parse(readFileSync(fileURLToPath(new URL('./node_modules/amis/package.json', import.meta.url)), 'utf8')) as {version: string};
const amis_sdk_url_prefix = `/vendor/amis/${amis_package.version}/`;
function content_type(file_name: string) {
    switch(extname(file_name).toLowerCase()) {
    case '.css':
        return 'text/css; charset=utf-8';
    case '.js':
        return 'text/javascript; charset=utf-8';
    case '.json':
        return 'application/json; charset=utf-8';
    case '.svg':
        return 'image/svg+xml';
    case '.woff':
        return 'font/woff';
    case '.woff2':
        return 'font/woff2';
    case '.ttf':
        return 'font/ttf';
    default:
        return 'application/octet-stream';
    }
}
function amis_sdk_plugin(): Plugin {
    return {
        name: 'adminive-amis-sdk',
        enforce: 'pre',
        resolveId(source) {
            if(source === 'amis' || source.startsWith('amis/')) {
                this.error(`Do not import ${source} into the Adminive Vite module graph; use the AMIS SDK runtime instead`);
            }
            return null;
        },
        buildStart() {
            const emit_directory = (directory: string, prefix: string) => {
                for(const entry of readdirSync(directory)) {
                    const source_path = resolve(directory, entry);
                    const relative_path = `${prefix}${entry}`;
                    if(statSync(source_path).isDirectory()) {
                        emit_directory(source_path, `${relative_path}/`);
                        continue;
                    }
                    this.emitFile({
                        type: 'asset',
                        fileName: `vendor/amis/${amis_package.version}/${relative_path}`,
                        source: readFileSync(source_path)
                    });
                }
            };
            emit_directory(amis_sdk_dir, '');
        },
        transformIndexHtml: {
            order: 'post',
            handler() {
                return [
                    {tag: 'link', attrs: {rel: 'stylesheet', href: `${amis_sdk_url_prefix}sdk.css`}, injectTo: 'head-prepend'},
                    {tag: 'link', attrs: {rel: 'stylesheet', href: `${amis_sdk_url_prefix}helper.css`}, injectTo: 'head-prepend'},
                    {tag: 'link', attrs: {rel: 'stylesheet', href: `${amis_sdk_url_prefix}iconfont.css`}, injectTo: 'head-prepend'},
                    {tag: 'script', attrs: {src: `${amis_sdk_url_prefix}sdk.js`}, injectTo: 'head-prepend'}
                ];
            }
        },
        configureServer(server) {
            server.middlewares.use((request, response, next) => {
                const pathname = new URL(request.url ?? '/', 'http://localhost').pathname;
                if(!pathname.startsWith(amis_sdk_url_prefix)) {
                    next();
                    return;
                }
                const relative_path = decodeURIComponent(pathname.slice(amis_sdk_url_prefix.length));
                const source_path = resolve(amis_sdk_dir, relative_path);
                if(source_path !== amis_sdk_dir && !source_path.startsWith(`${amis_sdk_dir}${sep}`)) {
                    next();
                    return;
                }
                try {
                    const source = readFileSync(source_path);
                    response.statusCode = 200;
                    response.setHeader('Content-Type', content_type(source_path));
                    response.end(source);
                } catch {
                    next();
                }
            });
        },
        configurePreviewServer(server) {
            server.middlewares.use((request, response, next) => {
                const pathname = new URL(request.url ?? '/', 'http://localhost').pathname;
                if(!pathname.startsWith(amis_sdk_url_prefix)) {
                    next();
                    return;
                }
                const relative_path = decodeURIComponent(pathname.slice(amis_sdk_url_prefix.length));
                const source_path = resolve(amis_sdk_dir, relative_path);
                if(source_path !== amis_sdk_dir && !source_path.startsWith(`${amis_sdk_dir}${sep}`)) {
                    next();
                    return;
                }
                try {
                    const source = readFileSync(source_path);
                    response.statusCode = 200;
                    response.setHeader('Content-Type', content_type(source_path));
                    response.end(source);
                } catch {
                    next();
                }
            });
        }
    };
}
export default defineConfig({
    cacheDir: cache_dir,
    plugins: [react(), amis_sdk_plugin()],
    resolve: {
        dedupe: ['react', 'react-dom']
    },
    server: {
        host: '0.0.0.0',
        port: 5173,
        proxy: {
            '/admin': {
                target: 'http://127.0.0.1:9999',
                changeOrigin: true
            }
        }
    },
    build: {
        outDir: output_dir,
        emptyOutDir: true
    }
});