// from https://github.com/tulir/whatsmeow/issues/659
package main

import (
	"context"
	"fmt"
	"log"
	"os"
	"strings"
	"time"

	_ "github.com/mattn/go-sqlite3"
	"github.com/mdp/qrterminal/v3"
	"github.com/urfave/cli/v3"
	"go.mau.fi/whatsmeow"
	"go.mau.fi/whatsmeow/store/sqlstore"
	"go.mau.fi/whatsmeow/types"
	"go.mau.fi/whatsmeow/types/events"
	waLog "go.mau.fi/whatsmeow/util/log"
)

func eventHandler(evt interface{}) {
	switch v := evt.(type) {
	case *events.Message:
		fmt.Println("Received a message from !", v.Info.Sender)

		fmt.Println("Received a message!", v.Message.GetConversation())
	}
}

func sendPoll(JID types.JID, headline string, optionNames []string) {
	dbLog := waLog.Stdout("Database", "DEBUG", true)
	// Make sure you add appropriate DB connector imports, e.g. github.com/mattn/go-sqlite3 for SQLite
	container, err := sqlstore.New("sqlite3", "file:sqlite3.db?_foreign_keys=on", dbLog)
	if err != nil {
		panic(err)
	}

	// If you want multiple sessions, remember their JIDs and use .GetDevice(jid) or .GetAllDevices() instead.
	deviceStore, err := container.GetFirstDevice()
	if err != nil {
		panic(err)
	}
	clientLog := waLog.Stdout("Client", "DEBUG", true)
	client := whatsmeow.NewClient(deviceStore, clientLog)
	client.AddEventHandler(eventHandler)

	// handle login via QR
	if client.Store.ID == nil {
		fmt.Println("Client store ID is nil, scanning QR")
		// No ID stored, new login
		qrChan, _ := client.GetQRChannel(context.Background())
		err = client.Connect()
		if err != nil {
			panic(err)
		}
		for evt := range qrChan {
			if evt.Event == "code" {
				// Render the QR code here
				// e.g. qrterminal.GenerateHalfBlock(evt.Code, qrterminal.L, os.Stdout)
				qrterminal.GenerateHalfBlock(evt.Code, qrterminal.L, os.Stdout)
				// or just manually `echo 2@... | qrencode -t ansiutf8` in a terminal
				fmt.Println("QR code:", evt.Code)
			} else {
				fmt.Println("Login event:", evt.Event)
			}
		}
	} else {
		// Already logged in, just connect
		fmt.Println("Connecting")

		err = client.Connect()
		if err != nil {
			panic(err)
		}
	}

	/*
		client.SendMessage(context.Background(), JID, &waE2E.Message{
			Conversation: proto.String("Hello, World!"),
		})
	*/
	pollMessage := client.BuildPollCreation(headline, optionNames, 1)

	fmt.Println("Created Poll Message succuessfully  : ", pollMessage)

	_, err = client.SendMessage(context.Background(), JID, pollMessage)
	// FIXME showing error even when successful
	if err != nil {
		fmt.Println("Sent Poll Succuessfully ", JID)
	} else {
		fmt.Println("Failed to Send Poll", JID, err)

	}

	//fmt.Println(client.GetJoinedGroups())
	time.Sleep(5 * time.Second)
	// Listen to Ctrl+C (you can also do something else that prevents the program from exiting)
	// c := make(chan os.Signal, 1)
	// signal.Notify(c, os.Interrupt, syscall.SIGTERM)
	// <-c

	client.Disconnect()
	container.Close()
}

func main() {
	var jidStr, header, optionsStr, text string
	//var message *waE2E.Message
	cmd := &cli.Command{
		Commands: []*cli.Command{
			{
				Name:  "message",
				Usage: "send a message using <JID> <MESSAGE>",
				Arguments: []cli.Argument{
					&cli.StringArg{Name: "jid", Destination: &jidStr},
					&cli.StringArg{Name: "message", Destination: &text},
				},
				Action: func(ctx context.Context, cmd *cli.Command) error {
					// parse JID
					var JID types.JID
					JID, err := types.ParseJID(jidStr)
					if err != nil {
						log.Fatal("Failed to parse JID: ", jidStr)
					} else {
						log.Println("Parsed JID correctly", JID)
					}
					return nil
				},
			},
			{
				Name:  "getgroups",
				Usage: "print all available group info",
				Action: func(ctx context.Context, cmd *cli.Command) error {
					return nil
				},
			},
			{
				Name:  "poll",
				Usage: "send a poll using <JID> <HEADER> <OPTIONS>",
				Arguments: []cli.Argument{
					&cli.StringArg{Name: "jid", Destination: &jidStr}, // use id field of group
					&cli.StringArg{Name: "header", Destination: &header},
					&cli.StringArg{Name: "options", Destination: &optionsStr},
				},
				Action: func(ctx context.Context, cmd *cli.Command) error {
					// parse JID
					if !strings.HasSuffix(jidStr, "@g.us") {
						jidStr = jidStr + "@g.us"
					}
					var JID types.JID
					JID, err := types.ParseJID(jidStr)
					if err != nil {
						log.Fatal("Failed to parse JID: ", jidStr)
					} else {
						log.Println("Parsed JID correctly", JID)
					}
					var options = strings.Fields(optionsStr)
					sendPoll(JID, header, options)
					return nil
				},
			},
		},
	}
	if err := cmd.Run(context.Background(), os.Args); err != nil {
		log.Fatal(err)
	}
}