@sweetui/sweet-mobile-sdk/config/koa2-middle/fileMiddle.js

/**
 * Created by liuzhengdong on 2018/4/10.
 * file中间件 开发模式用，方便 ajax读取.json .text文件
 * @param {ctx} ctx koa ctx
 */
const fs = require('fs')
const path = require('path')
const logger = require('./../logger/koa-logger')('fileMiddle')
module.exports = async function(ctx, next) {
    const proxy = Object.keys(require(path.join(process.cwd(), 'app.config')).proxy) || []
    if (proxy.findIndex(val => ctx.url.startsWith(val)) > -1) {
        await next()
    } else {
        const res = ctx.res
        // res.setHeader('Content-Type', 'application/json; charset=utf-8')
        let context = 'File does not exist, please insist that the path is correct'
        try {
            logger.info('Read File Request Success', `path ----> ${ctx.url}`)
            context = fs.readFileSync(path.join(process.cwd(), ctx.url), 'utf-8')
            res.statusCode = 200
        } catch (err) {
            logger.info(context, ctx.url)
            res.statusCode = 404
        }
        res.end(context)
    }
}