package voiceroomrocket

import (
	"encoding/json"
	"fmt"
	"math"
	"sort"
	"strconv"
	"strings"
	"time"

	"chatapp3-golang/internal/integration"
	"chatapp3-golang/internal/model"
)

func (s *Service) normalizeSysOrigin(sysOrigin string) string {
	if strings.TrimSpace(sysOrigin) != "" {
		return strings.ToUpper(strings.TrimSpace(sysOrigin))
	}
	if strings.TrimSpace(s.cfg.VoiceRoomRocket.DefaultSysOrigin) != "" {
		return strings.ToUpper(strings.TrimSpace(s.cfg.VoiceRoomRocket.DefaultSysOrigin))
	}
	return defaultSysOrigin
}

func normalizeTimezone(value string) string {
	value = strings.TrimSpace(value)
	if value == "" {
		return defaultTimezone
	}
	return value
}

func resolveLocation(value string) *time.Location {
	location, err := time.LoadLocation(normalizeTimezone(value))
	if err != nil {
		return time.UTC
	}
	return location
}

func dayKey(t time.Time, location *time.Location) string {
	if location == nil {
		location = time.UTC
	}
	return t.In(location).Format("20060102")
}

func normalizePage(cursor, limit int) (int, int) {
	if cursor <= 0 {
		cursor = 1
	}
	if limit <= 0 {
		limit = 20
	}
	if limit > 100 {
		limit = 100
	}
	return cursor, limit
}

func formatDateTime(t time.Time) string {
	if t.IsZero() {
		return ""
	}
	return t.Format("2006-01-02 15:04:05")
}

func pointerTimeValue(value *time.Time) time.Time {
	if value == nil {
		return time.Time{}
	}
	return *value
}

func decimalPercent(current, need int64) (string, int) {
	if need <= 0 || current <= 0 {
		return "0.0000", 0
	}
	percent := float64(current) * 100 / float64(need)
	display := int(math.Floor(percent))
	if display > 100 {
		display = 100
	}
	return fmt.Sprintf("%.4f", percent), display
}

func parsePercent(value string) float64 {
	parsed, err := strconv.ParseFloat(strings.TrimSpace(value), 64)
	if err != nil {
		return 0
	}
	return parsed
}

func countDistinctAcceptUsers(users []giftEventUser) int {
	if len(users) == 0 {
		return 0
	}
	set := make(map[int64]struct{}, len(users))
	for _, user := range users {
		if user.AcceptUserID.Int64() <= 0 {
			continue
		}
		set[user.AcceptUserID.Int64()] = struct{}{}
	}
	return len(set)
}

func resolveMillisTime(raw int64, fallback time.Time) time.Time {
	if raw <= 0 {
		return fallback
	}
	if raw < 1_000_000_000_000 {
		return time.Unix(raw, 0)
	}
	return time.UnixMilli(raw)
}

func truncateString(value string, limit int) string {
	if limit <= 0 || len(value) <= limit {
		return value
	}
	return value[:limit]
}

func isDuplicateKeyErr(err error) bool {
	if err == nil {
		return false
	}
	message := strings.ToLower(err.Error())
	return strings.Contains(message, "duplicate entry") ||
		strings.Contains(message, "duplicate key") ||
		strings.Contains(message, "unique constraint")
}

func levelPayload(row model.VoiceRoomRocketLevelConfig) LevelConfigPayload {
	return LevelConfigPayload{
		ID:                    row.ID,
		Level:                 row.Level,
		NeedEnergy:            row.NeedEnergy,
		ShakeThresholdPercent: row.ShakeThresholdPercent,
		PreviewRocketURL:      row.PreviewRocketURL,
		RocketIconURL:         row.RocketIconURL,
		RocketAnimationURL:    row.RocketAnimationURL,
		ProgressBarURL:        row.ProgressBarURL,
		Enabled:               row.Enabled,
		Sort:                  row.Sort,
	}
}

func rewardPayload(row model.VoiceRoomRocketRewardConfig) RewardConfigPayload {
	return RewardConfigPayload{
		ID:           row.ID,
		Level:        row.Level,
		RewardScene:  row.RewardScene,
		RewardType:   row.RewardType,
		RewardItemID: row.RewardItemID,
		RewardName:   row.RewardName,
		RewardCover:  row.RewardCover,
		RewardAmount: row.RewardAmount,
		ExpireDays:   row.ExpireDays,
		RewardCopies: positiveOrDefault(row.RewardCopies, 1),
		Weight:       row.Weight,
		Sort:         row.Sort,
		Enabled:      row.Enabled,
	}
}

func rewardPreviewPayload(rows []model.VoiceRoomRocketRewardConfig) RewardPreviewResponse {
	sort.Slice(rows, func(i, j int) bool {
		if rows[i].RewardScene != rows[j].RewardScene {
			return rewardSceneOrder(rows[i].RewardScene) < rewardSceneOrder(rows[j].RewardScene)
		}
		if rows[i].Sort != rows[j].Sort {
			return rows[i].Sort < rows[j].Sort
		}
		return rows[i].ID < rows[j].ID
	})
	resp := RewardPreviewResponse{}
	for _, row := range rows {
		if strings.EqualFold(strings.TrimSpace(row.RewardType), rewardTypeNone) {
			continue
		}
		payload := rewardPayload(row)
		switch strings.ToUpper(strings.TrimSpace(row.RewardScene)) {
		case rewardSceneTop1:
			resp.Top1 = append(resp.Top1, payload)
		case rewardSceneIgnite:
			resp.Ignite = append(resp.Ignite, payload)
		case rewardSceneInRoom:
			resp.InRoom = append(resp.InRoom, payload)
		}
	}
	return resp
}

func rewardSceneOrder(scene string) int {
	switch strings.ToUpper(strings.TrimSpace(scene)) {
	case rewardSceneTop1:
		return 1
	case rewardSceneIgnite:
		return 2
	case rewardSceneInRoom:
		return 3
	default:
		return 100
	}
}

func isSupportedRewardType(rewardType string) bool {
	switch strings.ToUpper(strings.TrimSpace(rewardType)) {
	case rewardTypeGold,
		rewardTypeMount,
		rewardTypeAvatarFrame,
		rewardTypeChatBubble,
		rewardTypeVIPCard,
		rewardTypeGift,
		rewardTypeBadge,
		rewardTypeNone:
		return true
	default:
		return false
	}
}

func configResponse(snapshot configSnapshot, levels []model.VoiceRoomRocketLevelConfig, rewards []model.VoiceRoomRocketRewardConfig) *ConfigResponse {
	levelPayloads := make([]LevelConfigPayload, 0, len(levels))
	sort.Slice(levels, func(i, j int) bool {
		if levels[i].Sort != levels[j].Sort {
			return levels[i].Sort < levels[j].Sort
		}
		return levels[i].Level < levels[j].Level
	})
	for _, row := range levels {
		levelPayloads = append(levelPayloads, levelPayload(row))
	}

	var ruleText json.RawMessage
	if strings.TrimSpace(snapshot.RuleText) != "" {
		ruleText = json.RawMessage(snapshot.RuleText)
	}
	var energyRuleJSON json.RawMessage
	if strings.TrimSpace(snapshot.EnergyRuleJSON) != "" {
		energyRuleJSON = json.RawMessage(snapshot.EnergyRuleJSON)
	}
	return &ConfigResponse{
		Configured:               snapshot.Configured,
		ID:                       snapshot.ID,
		SysOrigin:                snapshot.SysOrigin,
		Enabled:                  snapshot.Enabled,
		Timezone:                 snapshot.Timezone,
		MaxLevel:                 snapshot.MaxLevel,
		RankingTopLimit:          snapshot.RankingTopLimit,
		RewardRecordKeepDays:     snapshot.RewardRecordKeepDays,
		BroadcastDurationSeconds: snapshot.BroadcastDurationSeconds,
		InRoomRewardDelaySeconds: snapshot.InRoomRewardDelaySeconds,
		EnergyRuleJSON:           energyRuleJSON,
		RuleText:                 ruleText,
		Levels:                   levelPayloads,
		RewardPreview:            rewardPreviewPayload(rewards),
		UpdateTime:               formatDateTime(snapshot.UpdateTime),
	}
}

func toRewardRecordView(row model.VoiceRoomRocketRewardRecord) RewardRecordView {
	return RewardRecordView{
		ID:           row.ID,
		LaunchNo:     row.LaunchNo,
		RoomID:       row.RoomID,
		DayKey:       row.DayKey,
		RoundNo:      row.RoundNo,
		Level:        row.Level,
		UserID:       row.UserID,
		RewardScene:  row.RewardScene,
		RewardType:   row.RewardType,
		RewardItemID: row.RewardItemID,
		RewardName:   row.RewardName,
		RewardCover:  row.RewardCover,
		RewardAmount: row.RewardAmount,
		ExpireDays:   row.ExpireDays,
		GrantStatus:  row.GrantStatus,
		PopupStatus:  row.PopupStatus,
		ErrorMessage: row.ErrorMessage,
		GrantTime:    formatDateTime(pointerTimeValue(row.GrantTime)),
		CreateTime:   formatDateTime(row.CreateTime),
	}
}

func toLaunchRecordView(row model.VoiceRoomRocketLaunch) LaunchRecordView {
	return LaunchRecordView{
		ID:                   row.ID,
		LaunchNo:             row.LaunchNo,
		SysOrigin:            row.SysOrigin,
		RoomID:               row.RoomID,
		RoomAccount:          row.RoomAccount,
		DayKey:               row.DayKey,
		RoundNo:              row.RoundNo,
		Level:                row.Level,
		FinalEnergy:          row.FinalEnergy,
		Top1UserID:           row.Top1UserID,
		IgniteUserID:         row.IgniteUserID,
		InRoomSnapshotStatus: row.InRoomSnapshotStatus,
		LaunchTime:           formatDateTime(row.LaunchTime),
	}
}

func userProfileToKingRecord(userID int64, rank int, score int64, profile integration.UserProfile) KingRecord {
	return KingRecord{
		Rank:         rank,
		UserID:       userID,
		UserAvatar:   profile.UserAvatar,
		UserNickname: profile.UserNickname,
		Account:      profile.Account,
		CountryCode:  profile.CountryCode,
		CountryName:  profile.CountryName,
		ScoreEnergy:  score,
	}
}