const config = require('../src/config.json');
const path = require('path');
const fs = require('fs');

const sourceDir = path.resolve(__dirname, './../tsc/type/src/packages') // 拷贝的源文件夹

const toDir = path.resolve(__dirname, './../dist/types'); // ./../dist

const basePath = path.join(toDir, '__VUE');

const fileList = [];

let packages = [];

const preContent = `
declare type Install<T> = T & {
  install(app: import('vue').App): void;
};\n`;
const start = 'declare const _default:';
const end = ';\nexport default _default;\n';
const regex = new RegExp(`${start}([\\s\\S]*?)${end}`);

const getCompList = (basePath) => {
  const files = fs.readdirSync(basePath);
  files.forEach((filename) => {
    const filedir = path.join(basePath, filename);
    //根据文件路径获取文件信息，返回一个fs.Stats对象
    const stats = fs.statSync(filedir);
    const isFile = stats.isFile();//是文件  
    const isDir = stats.isDirectory();//是文件夹  
    if(isFile){
      fileList.push(filedir);
    }
    if(isDir){
      getCompList(filedir);//递归，如果是文件夹，就继续遍历该文件夹下面的文件  
    }
  });
}

const getCompName = (name) => {
  if(!packages.length) {
    config.nav.forEach((item, index) => {
      packages = packages.concat(item.packages);
    });
  }
  const packageName = packages.find((item) => item.name.toLowerCase() === name.toLowerCase());
  return packageName ? packageName.name : ''
}

const getLocale = () => {
  const source = path.join(sourceDir, 'locale');
  const to = path.resolve(__dirname, './../dist/packages/locale');
  fs.cp(source, to, { recursive: true }, (err) => {
    if(err) {
      console.error(err);
      return;
    }
  })
}

const getResolver = () => {
  const source = path.join(sourceDir, 'resolver');
  const to = path.resolve(__dirname, './../dist/resolver');
  fs.cp(source, to, { recursive: true }, (err) => {
    if(err) {
      console.error(err);
      return;
    }
  })
}

fs.cp(sourceDir, toDir, { recursive: true }, (err) => {
  if(err) {
    console.error(err);
    return;
  }

  const oldName = path.join(toDir, 'nutui.taro.vue.build.d.ts');
  const newName = path.join(toDir, 'index.d.ts');

  fs.rename(oldName, newName, (err) => {
    if(err) {
      console.error(err);
    }
  })

  getCompList(basePath);

  fileList.forEach((item, index) => {
    const content = fs.readFileSync(item).toLocaleString();
    const inputs = content.match(regex);
    
    if(inputs && inputs.length) {
      let name = item.substring(0, item.lastIndexOf('/'));
      name = name.substring(name.lastIndexOf('/') + 1);
      const componentName = getCompName(name);
      if(componentName) {
        let remain = `
declare module 'vue' {
  interface GlobalComponents {
      Nut${componentName}: typeof _default;
  }
}`;
        let changeContent = content.replace(regex, `${preContent}${start} Install<${inputs[1]}>${end}${remain}`)
        fs.writeFileSync(item, changeContent);
      }
    }
  });

  //国际化处理
  getLocale();

  // resolver 类型文件
  getResolver();
});