package main

import (
	"flag"
	"fmt"
	"log"
	"runtime"
	"sync"
	"time"

	"gopkg.in/gcfg.v1"

	"github.com/Arman92/go-tdlib"
)

type Config struct {
	Rabbit struct {
		User         string
		Password     string
		Host         string
		SendQueue    string
		ReceiveQueue string
	}
	Listen map[string]*struct {
		User int64
		Chat int64
	}
}

var (
	config                = flag.String("config", "gocw2.cfg", "config file path")
	history               = flag.Bool("history", false, "initialize chat history")
	historyChatID64       = flag.Int64("chat_id", 0, "chat to historize")
	historySenderUserID64 = flag.Int64("sender_user_id", 0, "sender_user_id to historize")

	cfg Config

	ownUserID64      = int64(0)
	ownUserID32      = int32(0)
	lastOwnTDMsg     time.Time
	lastOwnTDMsgMux  sync.Mutex
	lastChatTDMsg    map[int64]time.Time
	lastChatTDMsgMux map[int64]*sync.Mutex
	lastChatMsgMux   sync.RWMutex
	MQCWMsgQueue     chan ChatWarsMessage
	MQTGCmdQueue     chan TGCommand
)

func main() {
	// Parsing config
	flag.Parse()

	err := gcfg.ReadFileInto(&cfg, *config)
	if err != nil {
		log.Fatalf("Failed to parse gcfg data: %s", err)
	}

	fmt.Printf("MQReceive on %s.\n", cfg.Rabbit.ReceiveQueue)
	fmt.Printf("MQSend on %s.\n", cfg.Rabbit.SendQueue)

	tdlib.SetLogVerbosityLevel(1)
	tdlib.SetFilePath("./errors.txt")

	// Create new instance of client
	sysv := fmt.Sprintf("%s (%s)", runtime.GOOS, runtime.GOARCH)
	client := tdlib.NewClient(tdlib.Config{
		APIID:               "187786",
		APIHash:             "e782045df67ba48e441ccb105da8fc85",
		SystemLanguageCode:  "en",
		DeviceModel:         "ChatWarsClient",
		SystemVersion:       sysv,
		ApplicationVersion:  "0.1",
		UseMessageDatabase:  true,
		UseFileDatabase:     true,
		UseChatInfoDatabase: true,
		UseTestDataCenter:   false,
		DatabaseDirectory:   "./tdlib-db",
		FileDirectory:       "./tdlib-files",
		IgnoreFileNames:     false,
	})

	for {
		currentState, _ := client.Authorize()
		if currentState.GetAuthorizationStateEnum() == tdlib.AuthorizationStateWaitPhoneNumberType {
			fmt.Print("Enter phone: ")
			var number string
			fmt.Scanln(&number)
			_, err := client.SendPhoneNumber(number)
			logOnError(err, "Error sending phone number.")
		} else if currentState.GetAuthorizationStateEnum() == tdlib.AuthorizationStateWaitCodeType {
			fmt.Print("Enter code: ")
			var code string
			fmt.Scanln(&code)
			_, err := client.SendAuthCode(code)
			logOnError(err, "Error sending auth code.")
		} else if currentState.GetAuthorizationStateEnum() == tdlib.AuthorizationStateWaitPasswordType {
			fmt.Print("Enter Password: ")
			var password string
			fmt.Scanln(&password)
			_, err := client.SendAuthPassword(password)
			logOnError(err, "Error sending auth password.")
		} else if currentState.GetAuthorizationStateEnum() == tdlib.AuthorizationStateReadyType {
			fmt.Println("Authorization Ready! Let's rock")
			break
		}
		time.Sleep(1 * time.Second)
	}

	ownUserID32 = OwnUserID(client)
	ownUserID64 = int64(OwnUserID(client))

	lastChatTDMsg = make(map[int64]time.Time)
	lastChatTDMsgMux = make(map[int64]*sync.Mutex)

	MQCWMsgQueue = make(chan ChatWarsMessage, 100)
	for w := 1; w <= 3; w++ {
		go MQSendMsgWorker(w, MQCWMsgQueue)
	}

	if *history {
		fmt.Printf("Retrieving chat.\n")
		getHistory(client, historyChatID64, historySenderUserID64)
		return
	}

	MQTGCmdQueue = make(chan TGCommand, 100)
	for w := 1; w <= 3; w++ {
		go MQReceiveMsgWorker(w, MQTGCmdQueue)
	}
	go MQKeepAliveWorker()

	lastOwnTDMsgMux.Lock()
	lastOwnTDMsg = time.Now()
	lastOwnTDMsgMux.Unlock()

	go ListenTG(client)
	go ListenMQ(client, MQTGCmdQueue)
	go ListenMe(client)

	opt := tdlib.OptionValueBoolean{
		Value: false,
	}
	_, err = client.SetOption("online", opt)
	logOnError(err, "SetOption(online)")

	fmt.Println("Started !")

	// Main loop
	forever := make(chan bool)
	<-forever
}