package models

import (
	"encoding/json"
	"time"
)

// Activity 运营活动表
type Activity struct {
	ID              int64           `json:"id" gorm:"primaryKey;autoIncrement"`
	ActivityType    string          `json:"activity_type" gorm:"size:50;not null"` // birthday/concert/bus
	Title           string          `json:"title" gorm:"size:100;not null"`
	Theme           string          `json:"theme" gorm:"size:100"` // 中文主题
	Description     string          `json:"description" gorm:"type:text"`
	StarID          int64           `json:"star_id" gorm:"not null"`
	StartTime       int64           `json:"start_time" gorm:"not null"` // 毫秒时间戳
	EndTime         int64           `json:"end_time" gorm:"not null"`   // 毫秒时间戳
	TargetProgress  int64           `json:"target_progress" gorm:"default:1000"`
	CurrentProgress int64           `json:"current_progress" gorm:"default:0"`
	Status          string          `json:"status" gorm:"size:20;default:pending"` // pending/active/completed/expired
	StageConfigs    json.RawMessage `json:"stage_configs" gorm:"type:jsonb"`        // 阶段配置
	CreatedAt       int64           `json:"created_at" gorm:"not null"`
	UpdatedAt       int64           `json:"updated_at" gorm:"not null"`

	Items []ActivityItem `json:"items,omitempty" gorm:"foreignKey:ActivityID"`
}

// TableName 表名
func (Activity) TableName() string {
	return "activities"
}

// GetStage 获取当前阶段
func (a *Activity) GetStage() string {
	if a.CurrentProgress >= a.TargetProgress {
		return "completed"
	}

	progress := float64(a.CurrentProgress) / float64(a.TargetProgress) * 100

	switch {
	case progress <= 25:
		return "early"
	case progress <= 50:
		return "mid"
	case progress <= 75:
		return "late"
	default:
		return "completed"
	}
}

// GetCurrentStatus 获取当前活动状态
func (a *Activity) GetCurrentStatus() string {
	now := time.Now().UnixMilli()

	if now < a.StartTime {
		return "pending"
	}
	if now > a.EndTime {
		return "expired"
	}
	if a.CurrentProgress >= a.TargetProgress {
		return "completed"
	}
	return "active"
}

// StageConfigJSON stage_configs 的 JSON 结构
type StageConfigJSON struct {
	CoverImage  string      `json:"cover_image"`
	BannerImage string      `json:"banner_image"`
	Stages     []StageInfo `json:"stages"`
}

// StageInfo 阶段信息
type StageInfo struct {
	Threshold  int    `json:"threshold"`
	Background string `json:"background"`
	Title      string `json:"title"`
}

// GetStageImages 获取当前阶段的图片信息
func (a *Activity) GetStageImages() (coverImage, bannerImage, stageBackground, stageTitle string) {
	if len(a.StageConfigs) == 0 {
		return
	}

	var config StageConfigJSON
	if err := json.Unmarshal(a.StageConfigs, &config); err != nil {
		return
	}

	coverImage = config.CoverImage
	bannerImage = config.BannerImage

	// 根据当前进度找到对应的阶段
	currentProgress := a.CurrentProgress

	for _, stage := range config.Stages {
		if currentProgress >= int64(stage.Threshold) {
			stageBackground = stage.Background
			stageTitle = stage.Title
		}
	}

	// 如果没有匹配到阶段，使用最后一个阶段的背景
	if stageBackground == "" && len(config.Stages) > 0 {
		lastStage := config.Stages[len(config.Stages)-1]
		stageBackground = lastStage.Background
		stageTitle = lastStage.Title
	}

	return
}

// ActivityItem 活动道具表
type ActivityItem struct {
	ID                 int64  `json:"id" gorm:"primaryKey;autoIncrement"`
	ActivityID         int64  `json:"activity_id" gorm:"not null"`
	ItemType           string `json:"item_type" gorm:"size:50;not null"` // firework/megaphone/love
	ItemName           string `json:"item_name" gorm:"size:50;not null"`
	IconURL            string `json:"icon_url" gorm:"size:500"`
	CrystalCost        int    `json:"crystal_cost" gorm:"not null"`
	ContributionPoints int    `json:"contribution_points" gorm:"not null"`
	SortOrder          int    `json:"sort_order" gorm:"default:0"`
	IsActive           bool   `json:"is_active" gorm:"default:true"`
	CreatedAt          int64  `json:"created_at" gorm:"not null"`
	UpdatedAt          int64  `json:"updated_at" gorm:"not null"`
}

// TableName 表名
func (ActivityItem) TableName() string {
	return "activity_items"
}

// ActivityContribution 用户活动贡献记录表
type ActivityContribution struct {
	ID                 int64 `json:"id" gorm:"primaryKey;autoIncrement"`
	ActivityID         int64 `json:"activity_id" gorm:"not null"`
	UserID             int64 `json:"user_id" gorm:"not null"`
	StarID             int64 `json:"star_id" gorm:"not null"`
	ItemID             int64 `json:"item_id" gorm:"not null"`
	ItemType           string `json:"item_type" gorm:"size:50;not null"`
	Quantity           int    `json:"quantity" gorm:"default:1"`
	CrystalSpent       int64  `json:"crystal_spent" gorm:"not null"`
	ContributionPoints int64  `json:"contribution_points" gorm:"not null"`
	CreatedAt          int64  `json:"created_at" gorm:"not null"`
}

// TableName 表名
func (ActivityContribution) TableName() string {
	return "activity_contributions"
}

// ActivityUserStats 用户活动贡献汇总表
type ActivityUserStats struct {
	ID                int64 `json:"id" gorm:"primaryKey;autoIncrement"`
	ActivityID        int64 `json:"activity_id" gorm:"not null;uniqueIndex:uk_activity_user_star"`
	UserID            int64 `json:"user_id" gorm:"not null;uniqueIndex:uk_activity_user_star"`
	StarID            int64 `json:"star_id" gorm:"not null;uniqueIndex:uk_activity_user_star"`
	TotalContribution int64 `json:"total_contribution" gorm:"default:0"`
	TotalCrystalSpent int64 `json:"total_crystal_spent" gorm:"default:0"`
	TotalItems        int   `json:"total_items" gorm:"default:0"`
	LastContributeAt  int64 `json:"last_contribute_at" gorm:"not null"`
	CreatedAt         int64 `json:"created_at" gorm:"not null"`
	UpdatedAt         int64 `json:"updated_at" gorm:"not null"`
}

// TableName 表名
func (ActivityUserStats) TableName() string {
	return "activity_user_stats"
}