package main

import (
	"fmt"
	"github.com/bwmarrin/discordgo"
	"github.com/deckarep/golang-set"
	"log"
	"os"
	"os/signal"
	"syscall"
)

var config = readConfig()
var commands []*Command
var state *discordgo.State

func main() {
	session, err := discordgo.New("Bot " + config.Token)
	if err != nil {
		fmt.Println("error: ", err)
		return
	}
	defer session.Close()

	session.AddHandler(evaluateMessage)
	session.AddHandler(onJoin)
	err = session.Open()
	if err != nil {
		fmt.Println("No connection:\n", err)
		return
	}

	f, err := os.OpenFile("selphybot.log", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
	if err != nil {
		fmt.Println("Error opening log file:\n", err)
	}
	defer f.Close()
	log.SetOutput(f)
	session.UpdateStatus(0, "!help")
	state = discordgo.NewState()
	server, err := session.Guild(config.ServerID)
	if err != nil {
		fmt.Println("Guild incorrectly configured. Exiting...")
		return
	}
	state.GuildAdd(server)
	go checkAndDeleteUnusedChannels(session)
	addCommands()

	fmt.Println("Bot running. selphyWoo")
	log.Println("Bot running. selphyWoo")
	sc := make(chan os.Signal, 1)
	signal.Notify(sc, syscall.SIGINT, syscall.SIGTERM, os.Interrupt, os.Kill)
	<-sc

	for _, channel := range tempChannels {
		session.ChannelDelete(channel.ID)
	}
	fmt.Println("Exiting...")
	log.Println("Exiting...")
}

// I’ll just put all of the commands here for now.
func addCommands() {
	// Moderation
	registerCommand(Command{Trigger: "^[^`]*([()|DoOvVcC][-=^']?;|;[-=^']?[()|DoOpPvVcC3]|:wink:|😉)[^`]*$", Output: "<@%s> Oboe!", DeleteInput: true, OutputIsReply: true, Type: CommandTypeRegex})
	registerCommand(Command{Trigger: "(\\s|\n|^)[nN][hH]([ ?.,\n]|$)", Output: "<@%s> „nh“ ist kein Wort, du Oboe!", DeleteInput: true, OutputIsReply: true, Type: CommandTypeRegex})
	registerCommand(Command{Trigger: "einzigste", Output: "<@%s> Es heißt „einzige“, du Tuba.", DeleteInput: true, OutputIsReply: true, Type: CommandTypeContains})
	registerCommand(Command{Trigger: "!complain", Type: CommandTypePrefix, DMOnly: true, Function: modComplain})
	registerCommand(Command{Trigger: "!scomplain", Type: CommandTypePrefix, DMOnly: true, Function: selphyComplain})
	registerCommand(Command{Trigger: "!beschwerde", Type: CommandTypePrefix, DMOnly: true, Function: modComplain})

	for comm, _ := range config.RoleCommands {
		registerCommand(Command{Trigger: comm, Type: CommandTypeFullMatch, DMOnly: true, Function: giveAgeRole})
	}

	// Fluff
	registerCommand(Command{Trigger: "o/", Output: "\\o", Type: CommandTypeFullMatch, Cooldown: 10})
	registerCommand(Command{Trigger: "\\o", Output: "o/", Type: CommandTypeFullMatch, Cooldown: 10})
	registerCommand(Command{Trigger: "\\o/", Output: "/o\\", Type: CommandTypeFullMatch, Cooldown: 10})
	registerCommand(Command{Trigger: "/o\\", Output: "\\o/", Type: CommandTypeFullMatch, Cooldown: 10})
	registerCommand(Command{Trigger: "!heil", Output: "(ﾉ･ｪ･)ﾉ Selphy (ﾉ･ｪ･)ﾉ", Type: CommandTypeFullMatch, Cooldown: 30})
	registerCommand(Command{Trigger: "ayy", Output: "lmao", Type: CommandTypeFullMatch, Cooldown: 0})
	registerCommand(Command{Trigger: "<:selphyDango:531594585424527370>", Output: "<:dango:430669469799677953> :notes: Dango Daikazoku :notes: <:dango:430669469799677953>", Type: CommandTypeFullMatch, Cooldown: 10800})
	registerCommand(Command{Trigger: "praise the sun", Output: "If only I could be so grossly incandescent \\\\[T]/", Type: CommandTypeContains, IgnoreCase: true, Cooldown: 85600})

	// Information
	registerCommand(Command{Trigger: "!welcome", OutputEmbed: getWelcomeEmbed(), Type: CommandTypeFullMatch, DMOnly: true})
	registerCommand(Command{Trigger: "!mods", Output: "Bei Fragen, Problemen und Beschwerden wende dich bitte an die Moderatoren oder schick mir eine Nachricht beginnend mit !complain, um dich anonym zu beschweren.\nAktuell anwesende Mods werden dir rechts mit dem Rang „Maid“ angezeigt.", Type: CommandTypeFullMatch})

	// Features :Pog:
	registerCommand(Command{Trigger: "!vc ", Type: CommandTypePrefix, Function: parseVoiceChannelCommand, AllowedChannels: mapset.NewSetWith("525852491976278016")})

	// Admin and/or debug
	registerCommand(Command{Trigger: "<@%s> <3", Output: "<@%s> <3", Type: CommandTypeFullMatch, AdminOnly: true, OutputIsReply: true, RequiresMention: true})
	registerCommand(Command{Trigger: "echo", Type: CommandTypePrefix, Function: echoMessage, AdminOnly: true})

	// This needs to be the last command because getHelpEmbed is evaluated here once, not on every function call. Putting it too early will result in missing commands in the output.
	registerCommand(Command{Trigger: "!help", OutputEmbed: getHelpEmbed(), Type: CommandTypeFullMatch})

	fmt.Printf("Successfully initialized %d commands\n", len(commands))
	log.Printf("Successfully initialized %d commands", len(commands))
}