#!/usr/bin/env node
let target = process.argv[2];
if (!target) {
  console.error('缺少 nutui or nutui-taro 参数！');
  return;
}
const config = require('../src/config.json');
const packageConfig = require('../package.json');
const path = require('path');
const fs = require('fs-extra');

// 获取依赖关系
const styleMap = new Map();
const tasks = [];
let outputFileEntry = ``;
let components = [];
// import Locale from './packages/locale';\n
config.nav.forEach((item) => {
  item.packages.forEach((element) => {
    styleMap.set(element.name, {
      name: element.name,
      children: element.styleDeps
    });
    // gen entry
    if (element.exclude != true) {
      let outputMjs = '';
      if (element.type == 'methods' && target == 'nutui') {
        outputMjs = `import _${element.name} from '../_es/${element.name}.js';
import { show${element.name} } from '../_es/${element.name}.js';
const treeshaking = (t) => t;
const ${element.name} = treeshaking(_${element.name});
export { ${element.name}, show${element.name} };`;
      } else {
        outputMjs = `import _${element.name} from '../_es/${element.name}.js';
const treeshaking = (t) => t;
const ${element.name} = treeshaking(_${element.name});
export { ${element.name} };`;
      }
      tasks.push(
        fs.outputFile(path.resolve(__dirname, `../dist/packages/${element.name}/index.mjs`), outputMjs, 'utf8', () => {
          // console.log('')
        })
      );
      let folderName = element.name.toLowerCase();
      outputFileEntry += `export * from "./packages/${folderName}/index.mjs";\n`;
      components.push(element.name);
    }
  });
});
outputFileEntry += components.map(name => `import { ${name} } from "./packages/${name.toLowerCase()}/index.mjs";`).join('\n');
outputFileEntry += `\nexport { Locale } from "./packages/locale/lang";
export function install(app) {
  const packages = [${components.join(',')}];
  packages.forEach((item) => {
    if (item.install) {
      app.use(item);
    } else if (item.name) {
      app.component(item.name, item);
    }
  });
}
export const version = '${packageConfig.version}';
export default {
  install,
  version
};`;

tasks.push(
  fs.outputFile(path.resolve(__dirname, `../dist/nutui.es.js`), outputFileEntry, 'utf8', () => {
    // console.log('')
  })
);

styleMap.forEach((value) => {
  if (value.children && value.children.length > 0) {
    value.children.forEach((item, index) => {
      value.children[index] = styleMap.get(item);
    });
  }
});

const getAllDeps = (styleObj, key) => {
  const value = styleObj;
  if (value.children?.length === 0) {
    return [value.name];
  } else {
    let deps = [];
    value.children?.forEach((item) => {
      if (key === item.name) {
        console.error('generate-style-deps: 存在循环引用', key);
        return [];
      }
      deps = deps.concat(getAllDeps(item, key));
    });
    deps.unshift(value.name);
    return [...new Set(deps)];
  }
};


styleMap.forEach((value, key) => {
  const name = key.toLowerCase();
  let deps = getAllDeps(value, key);
  deps = deps.filter((component) => {
    return component !== key;
  });
  // gen style
  const outputStyleMjs = `import '../../styles/reset.css';\n${deps
    .map((component) => {
      return `import '../${component.toLowerCase()}/index.scss';\n`;
    })
    .reverse()
    .join('')}import './index.scss';\n`;
  tasks.push(
    fs.outputFile(path.resolve(__dirname, `../dist/packages/${name}/style.mjs`), outputStyleMjs, 'utf8', () => {
      // console.log('')
    })
  );
});

Promise.all(tasks);