package commands

import (
	"math/rand"
	"strings"
	"sync"

	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
)

type BandnameCommand struct{}

var (
	bandnameOnce  sync.Once
	randomArticle = []string{"the", ""}
	randomAdj     = []string{
		"massive", "gargantuan", "scorched", "spiteful", "hateful", "deadly", "unwise", "ignorant",
		"disgusting", "fearless", "honest", "fleeting", "bloody", "foolish", "unmoving", "black", "sick", "diseased",
		"undead", "terrible", "unkind", "burning", "disgraced", "conflicted", "malicious", "unclean", "dirty", "unwashed",
		"muddy", "sickly", "fearless", "moon-lit", "bony", "skeletal", "burning", "flaming", "savage", "wild", "gold",
		"silver", "overgrown", "wild", "untamed", "ethereal", "ghostly", "haunted", "buried", "nuclear", "radioactive",
		"mutated", "accidental", "selfish", "self-serving", "hypocritical", "wicked", "dastardly", "dreadful", "obscene",
		"filthy", "vulgar", "vile", "worthless", "despicable", "cruel", "inhuman", "bloodthirsty", "vicious", "sadistic",
		"diabolical", "abominable", "bitter", "", "", "", "", "", "", "", "", "", "",
	}
	randomNounPlural = []string{
		"excuses", "clocks", "machines", "needles", "cultists", "slayers", "tyrants", "sound",
		"vision", "sight", "taste", "smell", "trumpets", "wanderers", "sirens", "kings", "queens", "knights", "priests",
		"liars", "ogres", "devils", "angels", "demons", "screams", "cries", "pigs", "fiends", "locusts", "worms", "ravens",
		"vultures", "theives", "warnings", "bodies", "bones", "fingers", "hands", "mouths", "ears", "tongues", "eyes",
		"magic", "men", "women", "promises", "confessions", "kingdoms", "kisses", "fists", "suns", "moons", "stars", "weight",
		"altars", "tombstones", "monuments", "rain", "artifacts", "wizards", "warlocks", "barbarians", "druids", "warriors",
		"monks", "diamonds", "hoard", "embers", "ashes", "swamps", "mountains", "plains", "rivers", "islands", "forests",
		"mines", "dungeons", "tombs", "hills", "sons", "daughters", "spires", "pyramids", "crypts", "catacombs", "shrines",
		"pits", "whores", "bandits", "stains", "delusion", "mistakes", "weapons", "chains", "pillars", "beasts", "creatures",
	}
	randomNounSingular = []string{
		"reason", "famine", "disease", "death", "war", "hatred", "sadness", "fear", "rage",
		"terror", "awe", "disgust", "pain", "suffering", "misery", "avarice", "malice", "lust", "filth", "dirt", "skin",
		"control", "pride", "decay", "flesh", "bone", "stone", "metal", "iron", "steel", "burden", "memory", "sorrow", "fire",
		"hell", "silence", "loathing", "contempt", "revulsion", "horror", "abomination", "devastation", "dismay", "dread",
		"panic", "frenzy", "hysteria", "grief", "remorse", "woe", "anguish", "misery", "desolation", "misfortune", "mourning",
		"despair", "lamentation", "faith", "eternity", "gloom", "melancholy", "regret", "distress",
	}
)

func (b BandnameCommand) Name() string {
	return "bandname"
}

func (b BandnameCommand) Help() string {
	return "Generate a random metal band name"
}

func (b BandnameCommand) Execute(update tgbotapi.Update, bot *tgbotapi.BotAPI) {
	// Generate band name: [article] [adj] [plural noun] of [singular noun]
	parts := []string{
		randChoice(randomArticle),
		randChoice(randomAdj),
		randChoice(randomNounPlural),
		"of",
		randChoice(randomNounSingular),
	}
	// Remove empty strings and extra spaces
	name := strings.Join(filterNonEmpty(parts), " ")
	msg := tgbotapi.NewMessage(update.Message.Chat.ID, name)
	msg.ParseMode = "Markdown"
	bot.Send(msg)
}

func randChoice(arr []string) string {
	return arr[rand.Intn(len(arr))]
}

func filterNonEmpty(arr []string) []string {
	var out []string
	for _, s := range arr {
		if strings.TrimSpace(s) != "" {
			out = append(out, s)
		}
	}
	return out
}

func init() {
	Register(BandnameCommand{})
}