import { Flaska, QueryHandler, JsonHandler, FormidableHandler } from 'flaska'
import formidable from 'formidable'

import { initPool } from './db.mjs'
import config from './config.mjs'
import PageRoutes from './page/routes.mjs'
import ArticleRoutes from './article/routes.mjs'
import AuthenticationRoutes from './authentication/routes.mjs'
import { authenticate } from './authentication/security.mjs'

export default class Server {
  constructor(http, port, core, opts = {}) {
    Object.assign(this, opts)
    this.http = http
    this.port = port
    this.core = core

    this.flaskaOptions = {
      appendHeaders: {
        'Content-Security-Policy': `default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src * data: blob:; font-src 'self' data:; object-src 'none'; frame-ancestors 'none'`,
      },
      log: this.core.log,
      nonce: ['script-src'],
      nonceCacheLength: 50,
    }
    this.authenticate = authenticate
    this.formidable = FormidableHandler.bind(this, formidable)
    this.jsonHandler = JsonHandler
    this.routes = [
      new PageRoutes(),
      new ArticleRoutes(),
      new AuthenticationRoutes(),
    ]

    this.init()
  }

  init() { }

  getRouteInstance(type) {
    for (let route of this.routes) {
      if (route instanceof type) {
        return route
      }
    }
  }

  addCustomRoutes() {

  }

  runCreateServer() {
    // Create our server
    this.flaska = new Flaska(this.flaskaOptions, this.http)

    // Create our database pool
    let pool = this.runCreateDatabase()

    // configure our server
    if (config.get('NODE_ENV') === 'development') {
      this.flaska.devMode()
    }

    this.flaska.before(function(ctx) {
      ctx.state.started = new Date().getTime()
      ctx.db = pool
    })
    this.flaska.before(QueryHandler())

    this.flaska.after(function(ctx) {
      let ended = new Date().getTime()
      var requestTime = ended - ctx.state.started

      let status = ''
      let level = 'info'
      if (ctx.status >= 400) {
        status = ctx.status + ' '
        level = 'warn'
      }
      if (ctx.status >= 500) {
        level = 'error'
      }

      ctx.log[level]({
        duration: requestTime,
        status: ctx.status,
      }, `<-- ${status}${ctx.method} ${ctx.url}`)
    })
  }

  runRegisterRoutes() {
    for (let route of this.routes) {
      route.register(this)
    }
  }

  runCreateDatabase() {
    return initPool(this.core, config.get('mssql'))
  }

  runStartListen() {
    return this.flaska.listenAsync(this.port).then(() => {
      this.core.log.info('Server is listening on port ' + this.port)
    })
  }

  run() {
    this.addCustomRoutes()
    this.runCreateServer()
    this.runRegisterRoutes()

    return this.runStartListen()
  }
}