import { readFileSync, existsSync } from 'fs';
import { join } from 'path';
import { defaultMainRootId, defaultHistoryType, qiankunStateForMicroModelNamespace } from '../constants';
import modifyRoutes from './modifyRoutes';

const namespace = 'plugin-qiankun/main';

export function isMasterEnable(api) {
    return !!api.userConfig?.qiankun?.main || !!process.env.INITIAL_QIANKUN_MAIN_OPTIONS;
}

export default function (api) {
    const {
        utils: { Mustache, winPath },
    } = api;

    api.describe({
        enableBy: () => isMasterEnable(api),
    });

    // 避免跟子应用冲突
    api.modifyDefaultConfig((config) => ({
        ...config,
        mountElementId: defaultMainRootId,
    }));

    modifyRoutes({ api, namespace });

    const absMicroAppPath = join(namespace, 'MicroApp.jsx');
    const absMicroAppWithMemoHistoryPath = join(namespace, 'MicroAppWithMemoHistory.jsx');
    const absRuntimePath = join(namespace, 'runtime.js');
    const absMasterOptionsPath = join(namespace, 'masterOptions.js');

    api.onGenerateFiles(() => {
        const HAS_PLUGIN_MODEL = api.hasPlugins(['@fesjs/plugin-model']);
        api.writeTmpFile({
            path: absMicroAppPath,
            content: Mustache.render(readFileSync(join(__dirname, 'runtime/MicroApp.tpl'), 'utf-8'), {
                qiankunStateForMicroModelNamespace,
                HAS_PLUGIN_MODEL: HAS_PLUGIN_MODEL && existsSync(winPath(join(api.paths.absSrcPath, 'models/qiankunStateForMicro.js'))),
                QIANKUN: 'qiankun',
                LODASH_ES: 'lodash-es',
            }),
        });

        api.writeTmpFile({
            path: absRuntimePath,
            content: readFileSync(join(__dirname, 'runtime/runtime.tpl'), 'utf-8'),
        });

        api.copyTmpFiles({
            namespace,
            path: join(__dirname, 'runtime'),
            ignore: ['.tpl'],
        });

        const { main: options } = api.config?.qiankun || {};
        const masterHistoryType = api.config?.router?.mode || defaultHistoryType;
        const base = api.config.router?.base;
        api.writeTmpFile({
            path: absMasterOptionsPath,
            content: `
            let options = ${JSON.stringify({
                masterHistoryType,
                base,
                ...options,
            })};
            export const getMasterOptions = () => options;
            export const setMasterOptions = (newOpts) => options = ({ ...options, ...newOpts });
            `,
        });
    });

    api.addPluginExports(() => [
        {
            specifiers: ['MicroApp'],
            source: absMicroAppPath,
        },
    ]);

    api.addPluginExports(() => [
        {
            specifiers: ['MicroAppWithMemoHistory'],
            source: absMicroAppWithMemoHistoryPath,
        },
    ]);
}