#!/usr/bin/env node

import { Command } from 'commander';
import chalk from 'chalk';
import { readFileSync } from 'fs';
import { fileURLToPath } from 'url';
import { dirname, join } from 'path';
import { validateConfig, type GeneratorConfig } from './config.js';
import { generate } from './generator.js';
import { fileExists } from './utils/file.js';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
const pkg = JSON.parse(readFileSync(join(__dirname, '../package.json'), 'utf-8'));

const program = new Command();

program
  .name('api-codegen')
  .description('Generate TypeScript API client from OpenAPI specification')
  .version(pkg.version)
  .requiredOption('-i, --input <path>', 'Path to OpenAPI specification file (JSON or YAML)')
  .requiredOption('-o, --output <path>', 'Output directory for generated files')
  .option('-n, --name <name>', 'Name of generated file (without extension)')
  .option('--swr', 'Generate SWR hooks for React')
  .action(async (options) => {
    try {
      // Создание конфигурации
      const config: Partial<GeneratorConfig> = {
        inputPath: options.input,
        outputPath: options.output,
        fileName: options.name,
        useSwr: options.swr || false,
      };

      // Валидация конфигурации
      validateConfig(config);

      // Проверка существования входного файла (только для локальных файлов)
      if (!config.inputPath!.startsWith('http://') && !config.inputPath!.startsWith('https://')) {
        if (!(await fileExists(config.inputPath!))) {
          console.error(chalk.red(`\n❌ Error: Input file not found: ${config.inputPath}\n`));
          process.exit(1);
        }
      }

      // Генерация API
      await generate(config as GeneratorConfig);
      
      console.log(chalk.green('\n✨ API client generated successfully!\n'));
    } catch (error) {
      console.error(chalk.red('\n❌ Error:'), error instanceof Error ? error.message : error);
      console.error();
      process.exit(1);
    }
  });

program.parse();