const Koa = require('koa')
const app = new Koa()
const views = require('koa-views')
const json = require('koa-json')
const onerror = require('koa-onerror')
const bodyparser = require('koa-bodyparser')
const jwt = require('koa-jwt')
const logger = require('koa-logger')
const cors = require('koa-cors');
const Routers = require('./routes/index')
const secret = require('./config/secret')
const JWTToken = require('./middleware/JWTToken')

// error handler
onerror(app)

app.use(JWTToken())
app.use(cors());

// 此接口列表，过滤不用jwt验证
app.use(jwt({secret: secret.sign}).unless({
    path: [
        // 文章列表
        /^\/api\/v1\/article\/list/,
        // 文章详情
        /^\/api\/v1\/article\/detail/,
        // 文章搜索
        /^\/api\/v1\/article\/search/,
        // 上传token
        /^\/api\/v1\/upload\/token/,
        // 注册
        /^\/api\/v1\/user\/register/,
        // 登录
        /^\/api\/v1\/user\/login/,
        // 分类列表
        /^\/api\/v1\/category\/list/,
        // 分类文章
        /^\/api\/v1\/category\/article/,
        // 分类列表
        /^\/api\/v1\/category\/article\/list/
    ]
}))

app.use(bodyparser({
    enableTypes: ['json', 'form', 'text']
}))
app.use(json())
app.use(logger())
app.use(require('koa-static')(__dirname + '/public'))

app.use(views(__dirname + '/views', {
    extension: 'pug'
}))

// logger
app.use(async (ctx, next) => {
    const start = new Date()
    await next()
    const ms = new Date() - start
    console.log(`${ctx.method} ${ctx.url} - ${ms}ms`)
})

// routes
app.use(Routers.routes(), Routers.allowedMethods())

// error-handling
app.on('error', (err, ctx) => {
    console.error('server error', err, ctx)
});

module.exports = app