import fs from 'node:fs';
import path from 'node:path';
export function detectJsPackageManager(root) {
    if (fs.existsSync(path.join(root, 'pnpm-lock.yaml')))
        return 'pnpm';
    if (fs.existsSync(path.join(root, 'yarn.lock')))
        return 'yarn';
    if (fs.existsSync(path.join(root, 'bun.lockb')) || fs.existsSync(path.join(root, 'bun.lock')))
        return 'bun';
    return 'npm';
}
export function installCommandFor(pm) {
    switch (pm) {
        case 'pnpm':
            return { command: 'pnpm', args: ['install'] };
        case 'yarn':
            return { command: 'yarn', args: ['install'] };
        case 'bun':
            return { command: 'bun', args: ['install'] };
        case 'npm':
        default:
            return { command: 'npm', args: ['install'] };
    }
}
export function runScriptCommandFor(pm, script, extraArgs = []) {
    switch (pm) {
        case 'pnpm':
            return { command: 'pnpm', args: ['run', script, ...extraArgs] };
        case 'yarn':
            return { command: 'yarn', args: [script, ...extraArgs] };
        case 'bun':
            return { command: 'bun', args: ['run', script, ...extraArgs] };
        case 'npm':
        default:
            return { command: 'npm', args: ['run', script, ...(extraArgs.length ? ['--', ...extraArgs] : [])] };
    }
}
export function addDependencyCommandFor(pm, packages, options) {
    if (options.remove) {
        switch (pm) {
            case 'pnpm':
                return { command: 'pnpm', args: ['remove', ...packages] };
            case 'yarn':
                return { command: 'yarn', args: ['remove', ...packages] };
            case 'bun':
                return { command: 'bun', args: ['remove', ...packages] };
            case 'npm':
            default:
                return { command: 'npm', args: ['uninstall', ...packages] };
        }
    }
    switch (pm) {
        case 'pnpm':
            return { command: 'pnpm', args: ['add', ...(options.dev ? ['-D'] : []), ...packages] };
        case 'yarn':
            return { command: 'yarn', args: ['add', ...(options.dev ? ['-D'] : []), ...packages] };
        case 'bun':
            return { command: 'bun', args: ['add', ...(options.dev ? ['-d'] : []), ...packages] };
        case 'npm':
        default:
            return { command: 'npm', args: ['install', ...(options.dev ? ['-D'] : []), ...packages] };
    }
}
export function readPackageJson(root) {
    const file = path.join(root, 'package.json');
    if (!fs.existsSync(file))
        return null;
    try {
        return JSON.parse(fs.readFileSync(file, 'utf8'));
    }
    catch {
        return null;
    }
}
export function hasDependency(pkg, name) {
    if (!pkg)
        return false;
    return Boolean(pkg.dependencies?.[name] || pkg.devDependencies?.[name]);
}
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