package commands

import (
	"crypto/rand"
	"fmt"

	"github.com/bwmarrin/discordgo"

	"PermissionGacha/modules/config"
	"PermissionGacha/modules/level"
)

func handleLevelCommand(s *discordgo.Session, args []string, m *discordgo.MessageCreate) error {
	levels, rawXP, err := level.GetLevelAndXP(m.Author.ID)
	if err != nil {
		return fmt.Errorf("commands: handleLevelCommand: error while getting level and XP: %w", err)
	}
	randomSource := make([]byte, 1)
	rand.Read(randomSource)
	xp := rawXP - (rawXP % 100) + ((int(randomSource[0]) + 128) % 100)
	levelUpRequirement := level.GetLevelUpRequirement(levels)
	if xp > levelUpRequirement {
		xp -= 100
	}
	if levels < len(config.LevelRoles) {
		s.ChannelMessageSend(
			m.ChannelID,
			fmt.Sprintf(
				"<@%s> is now level %d. (%d XP/%d XP) [%.1f%%]",
				m.Author.ID, levels, xp, levelUpRequirement, float64(xp)/float64(levelUpRequirement)*100,
			),
		)
	} else {
		s.ChannelMessageSend(
			m.ChannelID,
			fmt.Sprintf(
				"<@%s> is now level %d. (%d XP) [MAX LEVEL]",
				m.Author.ID, levels, xp,
			),
		)
	}
	return nil
}