package main

import (
	"encoding/base64"
	"flag"
	"fmt"
	"time"

	"github.com/gin-gonic/gin"
	"github.com/rs/zerolog/log"
)

var (
	flagAddr string
	flagDev  bool

	DB_HOST   string
	DB_USER   string
	DB_PASSWD string
	DB_NAME   string
	DB_PORT   int

	LINE_SECRET string
	LINE_TOKEN  string

	IBM_INSTANCE  string
	IBM_ASSISTANT string
	IBM_API       string

	Version string
	Build   string
)

func init() {
	flag.StringVar(&flagAddr, "addr", "0.0.0.0:8000", "address to listen on.")
	flag.BoolVar(&flagDev, "dev", false, "is dev mode")

	flag.StringVar(&DB_HOST, "db-host", "postgres.ework.tw", "postgress db host.")
	flag.StringVar(&DB_USER, "db-user", "talent", "postgress db user.")
	flag.StringVar(&DB_PASSWD, "db-passwd", "show", "postgress db pqssword.")
	flag.StringVar(&DB_NAME, "db-name", "talent", "postgress db name.")
	flag.IntVar(&DB_PORT, "db-port", 5432, "postgress db port.")

	flag.StringVar(&LINE_SECRET, "line-secret", "cf406aa7577569ba2b211bc04f51630e", "line channel secret.")
	flag.StringVar(&LINE_TOKEN, "line-token", "IhP4dLM91boFQlRzHa/Iv9el2xXm2X6ByiDuWQXm6ndQL1LA+yA+O8x2OeuJkpSWlf5IE8cwkA+Mca18EjO42Q6vRm0T5cRdTLkO+42SX9HAx2GdJnhWu+S4IplOt38YktfmpodCyk6bXDBJp9YVwgdB04t89/1O/w1cDnyilFU=", "channel access token")

	flag.StringVar(&IBM_INSTANCE, "ibm-instance", "d9329221-40fb-4911-ba9f-69098349b8ab", "watson instance id")
	flag.StringVar(&IBM_ASSISTANT, "ibm-assistant", "13cb9242-722a-4644-ba9b-7a761ffe807e", "watson assistant id")
	flag.StringVar(&IBM_API, "ibm-api", "tLHR-Fhob0UideN1HUQdQ5grtl338X_VrrT31yy8FbKB", "watson api token")
}

func main() {
	tz, err := time.LoadLocation("Asia/Taipei")
	if err == nil {
		time.Local = tz
	}
	flag.Parse()
	setupLog()
	setupServer()
	connectToDB()
	migrateDB()
	setupLine()

	IBM_API = fmt.Sprintf("Basic %v", base64.URLEncoding.EncodeToString([]byte(fmt.Sprintf("apikey:%v", IBM_API))))

	// setup route
	server.GET("/", func(c *gin.Context) { OK(c, "ok") })

	// setup api
	api := server.Group("api")
	api.POST("/email", ApiUpdateEmail)
	api.POST("/attach/:oid", ApiPostReceipt)

	// setup bot webhook
	hook := server.Group("bot")
	hook.POST("/", webhook)

	// start server
	log.Info().Msgf("serving on %v", flagAddr)
	if err := server.Run(flagAddr); err != nil {
		panic(err)
	}
}