package bot

import (
	"context"
	"fmt"
	"strings"

	"github.com/bwmarrin/discordgo"
)

func (b *Bot) handleKudos(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) {
	target := i.ApplicationCommandData().Options[0].UserValue(s)
	if target.ID == i.Member.User.ID {
		respondEphemeral(s, i, "You can't kudos yourself! 😄")
		return
	}

	fromName := displayName(i.Member, i.Member.User)
	targetMember, _ := s.GuildMember(i.GuildID, target.ID)
	toName := displayName(targetMember, target)

	if err := b.db.GiveKudos(ctx, i.GuildID, i.Member.User.ID, fromName, target.ID, toName); err != nil {
		respondEphemeral(s, i, "Error giving kudos.")
		return
	}

	total, _ := b.db.GetKudosReceived(ctx, i.GuildID, target.ID)
	respond(s, i, fmt.Sprintf("👏 **%s** gave kudos to **%s**! They've received %d kudos total. Keep riding! 🚴",
		fromName, toName, total))
}

func (b *Bot) handleCompare(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) {
	target := i.ApplicationCommandData().Options[0].UserValue(s)
	meID := i.Member.User.ID
	meName := displayName(i.Member, i.Member.User)
	targetMember, _ := s.GuildMember(i.GuildID, target.ID)
	themName := displayName(targetMember, target)

	since := b.challengeStart(ctx, i.GuildID)
	meStats, _ := b.db.GetUserStats(ctx, i.GuildID, meID, since)
	themStats, _ := b.db.GetUserStats(ctx, i.GuildID, target.ID, since)
	mePB, _ := b.db.GetUserPB(ctx, i.GuildID, meID)
	themPB, _ := b.db.GetUserPB(ctx, i.GuildID, target.ID)
	meStreak, _ := b.db.GetUserStreak(ctx, meID)
	themStreak, _ := b.db.GetUserStreak(ctx, target.ID)

	cmp := func(a, b float64) string {
		switch {
		case a > b:
			return "⬆️"
		case b > a:
			return "⬇️"
		default:
			return "="
		}
	}
	cmpI := func(a, b int) string { return cmp(float64(a), float64(b)) }

	var sb strings.Builder
	sb.WriteString(fmt.Sprintf("## ⚔️ %s vs %s\n\n", meName, themName))
	sb.WriteString(fmt.Sprintf("| | **%s** | **%s** |\n", meName, themName))
	sb.WriteString("|---|---|---|\n")
	sb.WriteString(fmt.Sprintf("| Total KM %s | %.1f | %.1f |\n",
		cmp(meStats.TotalKM, themStats.TotalKM), meStats.TotalKM, themStats.TotalKM))
	sb.WriteString(fmt.Sprintf("| Rides %s | %d | %d |\n",
		cmpI(meStats.LogCount, themStats.LogCount), meStats.LogCount, themStats.LogCount))
	sb.WriteString(fmt.Sprintf("| Best ride %s | %.1f km | %.1f km |\n",
		cmp(mePB, themPB), mePB, themPB))
	sb.WriteString(fmt.Sprintf("| Streak %s | %d days | %d days |\n",
		cmpI(meStreak, themStreak), meStreak, themStreak))

	respondEphemeral(s, i, sb.String())
}