package core

import (
	"bytes"
	"fmt"
	"os/exec"
	"strings"
	"time"

	"github.com/bwmarrin/discordgo"
)

func createAudio(msg string) (filename string, file *bytes.Reader) {
	curr_time := time.Now().Unix()
	filename = fmt.Sprintf("/tmp/%d.mp3", curr_time)
	var cmd_args string = fmt.Sprintf("espeak-ng -s 120 -v mb-fr2 -p 30 '%s' --stdout",
		maxString(msg, 300))
	cmd := exec.Command("sh", "-c", cmd_args)
	out, err := cmd.CombinedOutput()
	if err != nil {
		fmt.Println(fmt.Sprint(err))
	}
	file = bytes.NewReader(out)
	return
}

func MessageHelp(s *discordgo.Session, m *discordgo.MessageCreate) {
	if m.Author.ID == s.State.User.ID {
		return
	}
	if m.Content == "/ggd help" {
		// build list of possible commands
		return
	}
}

func MessagePing(s *discordgo.Session, m *discordgo.MessageCreate) {
	if m.Author.ID == s.State.User.ID {
		return
	}

	if m.Content == "ping" {
		s.ChannelMessageSend(m.ChannelID, "Pong!")
	}

	if m.Content == "pong" {
		s.ChannelMessageSend(m.ChannelID, "Ping!")
	}
}

func MessageAudio(s *discordgo.Session, m *discordgo.MessageCreate) {
	if m.Author.ID == s.State.User.ID {
		return
	}
	var prefix string = "/ggd tts"
	if strings.HasPrefix(m.Content, prefix) {
		var message string = strings.TrimPrefix(m.Content, prefix)
		var cleanMessage string = prepareTTSMessage(message)
		filename, file := createAudio(cleanMessage)
		s.ChannelFileSend(m.ChannelID, filename, file)
	}
}