package main

import (
	"fmt"
	"github.com/gorilla/mux"
	"log"
	"net/http"
	"os"
	"strconv"
	"time"
)

func main() {
	// Get the value of an Environment Variable
	host := os.Getenv("DB_HOST")
	dbPort, dbPortErr := strconv.Atoi(os.Getenv("DB_PORT"))
	if dbPortErr != nil {
		dbPort = 0
	}
	username := os.Getenv("DB_USERNAME")
	password := os.Getenv("DB_PASSWORD")
	dbName := os.Getenv("DB_NAME")

	fmt.Printf("host: %s, dbPort: %v, username: %s, password: %s, dbName: %s\n",
		host, dbPort, username, password, dbName)

	if host == "" {
		host = "localhost"
	}
	if dbPort == 0 {
		dbPort = 5432
	}
	if username == "" {
		username = "sebastian"
	}
	if password == "" {
		password = "950100"
	}
	if dbName == "" {
		dbName = "music_dev_local"
	}

	initDB(host, dbPort, username, password, dbName)
	defer closeDb()

	r := mux.NewRouter()
	r.HandleFunc("/sync", syncHandler)
	r.HandleFunc("/sync/{func}", syncHandler)
	r.HandleFunc("/music", musicHandler)
	r.HandleFunc("/music/{func}", musicHandler)
	r.HandleFunc("/music/{func}/{func2}", musicHandler)
	r.HandleFunc("/{func}", indexHandler)
	http.Handle("/", r)

	port := os.Getenv("PORT")
	if port == "" {
		port = "8080"
		log.Printf("Defaulting to port %s", port)
	}

	log.Printf("Listening on port %s", port)
	log.Printf("Open http://localhost:%s in the browser", port)
	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%s", port), nil))
}

type VersionData struct {
	Version   string        `json:"version"`
	Changelog string        `json:"changelog"`
	History   []VersionData `json:"history"`
}

type SongInfo struct {
	Game             string `json:"Game"`
	GamePlayed       int    `json:"GamePlayed"`
	Song             string `json:"Song"`
	SongPlayed       int    `json:"SongPlayed"`
	CurrentlyPlaying bool   `json:"CurrentlyPlaying"`
	SongNo           int    `json:"SongNo"`
}

type GameData struct {
	id            int
	gameName      string
	added         time.Time
	deleted       time.Time
	lastChanged   time.Time
	path          string
	timesPlayed   int
	lastPlayed    time.Time
	numberOfSongs int32
}

type SongData struct {
	gameId      int
	songName    string
	path        string
	timesPlayed int
}

func setCorsAndNoCacheHeaders(w *http.ResponseWriter, r *http.Request) {
	var etagHeaders = []string{
		"ETag",
		"If-Modified-Since",
		"If-Match",
		"If-None-Match",
		"If-Range",
		"If-Unmodified-Since",
	}

	(*w).Header().Set("Expires", "Tue, 03 Jul 2001 06:00:00 GMT")
	(*w).Header().Set("Last-Modified", time.Now().String()+" GMT")
	(*w).Header().Set("Cache-Control", "no-cache, no-store, private, max-age=0")
	(*w).Header().Set("Pragma", "no-cache")
	(*w).Header().Set("X-Accel-Expires", "0")
	(*w).Header().Set("Access-Control-Allow-Origin", "*")

	for _, v := range etagHeaders {
		if r.Header.Get(v) != "" {
			r.Header.Del(v)
		}
	}
}