import { readFileSync, writeFileSync } from 'fs';
import { Command } from 'commander';

import { Platform } from '@conda-org/rattler';
import { computeLockId } from '@emscripten-forge/mambajs-core';
import { create } from '@emscripten-forge/mambajs';

import * as packageJSON from '../package.json';

const program = new Command();

program
  .name('mambajs')
  .description(packageJSON.description)
  .version(packageJSON.version);

program
  .command('create-lock')
  .description('Create a mambajs lock file from an environment.yml file')
  .argument('<env>', 'Path to environment file')
  .argument('<output>', 'Path to output lock JSON file')
  .option('-p, --platform <platform>', 'Target platform', 'emscripten-wasm32')
  .action(async (envPath, outputPath, options) => {
    const targetPlatform = options.platform as Platform;

    const environmentYml = readFileSync(envPath, 'utf8');

    console.log('Solving environment...');

    const lock = await create({
      yml: environmentYml,
      logger: console,
      platform: targetPlatform
    });

    lock.id = computeLockId(environmentYml);

    writeFileSync(outputPath, JSON.stringify(lock, null, 2));

    console.log(`Lockfile successfully written to ${outputPath}`);
  });

program.parse();