import {
  existsSync, mkdirSync, writeFileSync,
} from 'fs';
import { join } from 'path';
import { CONF_DIR, HOME_DIR } from '../constant/path';
import { print } from '../utils/print';
import { generateCsvConf } from './generate-csv-conf';
import { generateLogConf } from './generate-log-conf';

export interface CreatConf {
  type: 'csv' | 'log';
  inputDir: string;
  outputDir: string;
}

export interface CommonGenerateConf {
  outputDirPath: string;
  inputDirPath: string;
}

/**
 *  获取文件全路径
 * @param type
 * @returns
 */
export function getFullFileNameByType(type: string): string {
  return `${type}.conf.js`;
}

/**
 * 获取配置文件
 * @param type
 * @returns
 */
export function getConfig(type: string): Promise<any> {
  const path = join(HOME_DIR, CONF_DIR, getFullFileNameByType(type));
  if (!existsSync(path)) {
    throw new Error(`配置文件不存在: ${path}, 请先使用 'tuc -g' 创建配置文件`);
  }
  return import(path);
}

/**
 * 生成配置文件
 * @param conf
 */
export function createConf(conf: CreatConf): void {
  const dirPath = join(HOME_DIR, CONF_DIR);
  if (!existsSync(dirPath)) {
    mkdirSync(dirPath);
  }

  const { type, inputDir, outputDir } = conf;

  const confMap = {
    log: generateLogConf,
    csv: generateCsvConf,
  };

  const filePath = join(dirPath, getFullFileNameByType(type));

  confMap[type]({
    inputDirPath: inputDir,
    outputDirPath: outputDir,
  }).then((data) => {
    writeFileSync(filePath, data);
    print(`配置文件创建成功，目录为: ${filePath}`);
  });
}