package public

import (
	"fmt"
	"strings"
	"velox-bot/internal/music"

	"github.com/bwmarrin/discordgo"
)

var Queue = &discordgo.ApplicationCommand{
	Name:        "queue",
	Description: "Show the current music queue",
}

func QueueHandler(s *discordgo.Session, i *discordgo.InteractionCreate) {
	if !memberHasDJRole(s, i.GuildID, i.Member) {
		_ = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
			Type: discordgo.InteractionResponseChannelMessageWithSource,
			Data: &discordgo.InteractionResponseData{
				Content: "You need the **DJ** role to use music commands.",
				Flags:   discordgo.MessageFlagsEphemeral,
			},
		})
		return
	}

	current, rest := music.GetQueue(i.GuildID)

	if current == nil {
		_ = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
			Type: discordgo.InteractionResponseChannelMessageWithSource,
			Data: &discordgo.InteractionResponseData{
				Content: "The queue is currently empty.",
				Flags:   discordgo.MessageFlagsEphemeral,
			},
		})
		return
	}

	nowPlaying := fmt.Sprintf("%s — %s", current.Track.Info.Title, current.Track.Info.Author)

	var descBuilder strings.Builder
	if len(rest) > 0 {
		limit := len(rest)
		if limit > 10 {
			limit = 10
		}
		for idx, entry := range rest[:limit] {
			fmt.Fprintf(&descBuilder, "%d. %s — %s (requested by %s)\n", idx+1, entry.Track.Info.Title, entry.Track.Info.Author, entry.RequestedBy)
		}
		if len(rest) > limit {
			fmt.Fprintf(&descBuilder, "...and %d more.", len(rest)-limit)
		}
	} else {
		descBuilder.WriteString("Nothing else in the queue.")
	}

	_ = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
		Type: discordgo.InteractionResponseChannelMessageWithSource,
		Data: &discordgo.InteractionResponseData{
			Embeds: []*discordgo.MessageEmbed{
				{
					Title:       "Music Queue",
					Description: descBuilder.String(),
					Fields: []*discordgo.MessageEmbedField{
						{
							Name:  "Now Playing",
							Value: nowPlaying,
						},
					},
				},
			},
		},
	})
}