import path from "path";
import fs from "fs/promises";
import { build } from "vite";
import { fileURLToPath } from "url";

async function dev() {
    const __filename = fileURLToPath(import.meta.url);
    const __dirname = path.dirname(__filename);
    const rootPath = path.resolve(__dirname, "../");
    const manifestPath = path.join(rootPath, "manifest.json");
    const outputPath = path.join(rootPath, "dist");

    const manifestContents = await fs.readFile(manifestPath, "utf-8");
    const manifest = JSON.parse(manifestContents);

    const vaultPath = path.join(rootPath, "test-vault");
    const pluginPath = path.join(
        vaultPath,
        ".obsidian",
        "plugins",
        manifest.id
    );

    await ensureDir(pluginPath);
    await ensureDir(outputPath);

    const inputFiles = [
        path.join(outputPath, "main.js"),
        path.join(outputPath, "styles.css"),
        manifestPath,
    ];

    build({
        mode: "development",
        configFile: path.resolve(rootPath, "vite.config.js"),
        build: {
            watch: {},
        },
        plugins: [
            {
                name: "build-finish-copy",
                closeBundle() {
                    console.info("Build finished copying files");
                    copyFiles();
                },
            },
        ],
    });

    const copyFiles = async () => {
        for (const filePath of inputFiles) {
            const destPath = path.join(pluginPath, path.basename(filePath));
            try {
                await fs.copyFile(filePath, destPath);
                console.info(`✓ Updated ${path.basename(filePath)}`);
            } catch (e) {
                console.error(
                    `Failed to copy ${path.basename(filePath)}:`,
                    e.message
                );
            }
        }
    };

    console.info("🚀 Dev server started. Watching for changes...");
}

async function ensureDir(dir) {
    try {
        await fs.mkdir(dir, { recursive: true });
    } catch {}
}

dev().catch((err) => {
    console.error(err);
    process.exit(1);
});