package main

import (
  "github.com/kataras/iris"
  "github.com/kataras/go-template/html"
  "fmt"
  "errors"
  "git.mmnx.de/Moe/usermanager"
  "git.mmnx.de/Moe/databaseutils"
  "git.mmnx.de/Moe/configutils"
  "git.mmnx.de/Moe/errorhelpers"
  "git.mmnx.de/Moe/templatehelpers"
)

func main() {

  conf := configutils.ReadConfig("config.json") // read config
  configutils.Conf = &conf // store conf globally accessible

  databaseutils.DBUtil = &databaseutils.DBUtils{configutils.Conf.DBUser, configutils.Conf.DBPass, configutils.Conf.DBHost, configutils.Conf.DBName, nil} // init dbutils
  databaseutils.DBUtil.Connect() // connect to db

  users := make([]usermanager.User, 0) // users list
  usermanager.Users = &users // store globally accessible

  fmt.Print("") // for not needing to remove fmt ...

  iris.Config.IsDevelopment = true
  //iris.Config.Render.Template.Gzip = true

  /** HELPER FUNCTION EXAMPLE **/

    /*config := html.DefaultConfig()
    config.Layout = "layouts/main.html"
    config.Helpers["boldme"] = func(input string) raymond.SafeString {
      return raymond.SafeString("<b> " + input + "</b>")
    }*/

  /** ROUTING **/

  iris.UseTemplate(html.New(html.Config{ // main layout for all pages (like a wrapper for boxes we register downwards)
    Layout: "layouts/main.html",
  }))

  iris.UseFunc(templatehelpers.InitPageParams) // dynamic page params, initialization

  iris.Static("/js", "./static/js", 1) // make js files in static/js available via /js
  iris.Static("/css", "./static/css", 1)
  iris.Static("/img", "./static/img", 1)
  iris.Static("/static", "./static/static", 1)

  iris.Post("/login", loginHandler, usermanager.AuthHandler) // login form handler
  iris.Post("/register", usermanager.CanBeAuthedHandler, usermanager.RegisterHandler, usermanager.LogoutHandler) // handles registration, logs user out
  iris.Post("/account", usermanager.AuthHandler, accountUpdateHandler, usermanager.LogoutHandler) // account management
  iris.Post("/admin", usermanager.AuthHandler, usermanager.AdminHandler, adminPostHandler) // admin panel

  iris.Get("/login", templateHandler) // TODO not when logged in
  iris.Get("/logout", usermanager.AuthHandler, usermanager.LogoutHandler)
  iris.Get("/register", templateHandler)
	iris.Get("/", usermanager.AuthHandler, templateHandler)
  iris.Get("/account", usermanager.AuthHandler, templateHandler)
  iris.Get("/help", usermanager.AuthHandler, templateHandler)
  iris.Get("/admin", usermanager.AuthHandler, usermanager.AdminHandler, templateHandler)

  /** OTHER **/

  iris.Listen(":8080")
}

func loginHandler(ctx *iris.Context) { // TODO outsource?
  username := ctx.FormValueString("username") // POST values from login form
  password := ctx.FormValueString("password")

  user := usermanager.User{} // new user
  tokenString, err := user.Login(username, password) // try to login
  ctx.SetCookieKV("token", tokenString)

  if err != nil {
    errorhelpers.HandleError(err, ctx)
  } else {
    templatehelpers.UpdatePageParam(ctx, "notification", errorhelpers.SUCCESS_LOGIN) // TODO this for TODO down ?
    ctx.Next()
  }
}

func accountUpdateHandler(ctx *iris.Context) {
  username := ctx.FormValueString("username") // POST values
  password := ctx.FormValueString("password")
  userID := ctx.GetString("userID")

  err := usermanager.UserUpdateProcessor(username, password, userID)
  if err != nil { // TODO handle err nil stuff somewhere
    errorhelpers.HandleError(err, ctx)
  } else {
    err = errors.New(errorhelpers.SUCCESS_UPDATE)
    errorhelpers.HandleError(err, ctx)
  }
}

func adminPostHandler(ctx *iris.Context) {
  _, err := usermanager.GenerateTokens(5) // generate tokens and store in db, we don't need them now, TODO error handling?
  if err != nil {
    errorhelpers.HandleError(err, ctx)
  } else {
    err = errors.New(errorhelpers.SUCCESS_TOKENS_GENERATED)
    errorhelpers.HandleError(err, ctx)
  }
}

func templateHandler(ctx *iris.Context) {
  params := ctx.Get("params").(map[string]string)

  switch params["reqDir"] {
    case "admin":
      tokens := usermanager.GetTokensAsString(false)
      params["tokens"] = tokens
      ctx.Set("params", params)
  }

  ctx.MustRender(params["reqDir"] + "_box.html", params);
}