package input

import (
	"bufio"
	"fmt"
	"log/slog"
	"os"

	"gommunicator/internal/usecase"
)

type Input struct {
	log *slog.Logger
	uc  *usecase.Usecase
}

func New(uc *usecase.Usecase, log *slog.Logger) *Input {
	return &Input{
		log: log,
		uc:  uc,
	}
}

func (i *Input) Run() {
	for {
		reader := bufio.NewReader(os.Stdin)
		msg, err := reader.ReadString('\n')
		if err != nil {
			i.log.Error("failed to scan input", "err", err)
			continue
		}
		if len(msg) < 1 {
			continue
		}
		// observe command
		if msg[0] == '/' || msg == "?" {
			switch msg {
			case "?", "/help":
				fmt.Println(helpMessage)
			case "/new-password":
				pass, err := i.uc.GenNewPassword()
				if err != nil {
					i.log.Error("failed to generate new client's password", "err", err)
					break
				}
				i.log.Info("new server password generated", "password", pass)
			}
			continue
		}

		if msg[len(msg)-1] == '\n' {
			msg = msg[:len(msg)-1]
		}

		i.uc.SendMessage(msg, "server")
	}
}