package model

import (
	"time"

	"gorm.io/gorm"
)

// 充值申请状态
const (
	RechargeStatusPending  = "pending"
	RechargeStatusApproved = "approved"
	RechargeStatusRejected = "rejected"
)

// RechargeApplication 商户提交的人民币充值申请，凭证图片必填，由平台管理员审核后入账。
type RechargeApplication struct {
	ID        uint           `gorm:"primarykey" json:"id"`
	CreatedAt time.Time      `json:"created_at"`
	UpdatedAt time.Time      `json:"updated_at"`
	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`

	MerchantID    uint       `gorm:"not null;index" json:"merchant_id"`
	ApplicationNo string     `gorm:"uniqueIndex;size:64;not null" json:"application_no"`
	AmountCNY     int64      `gorm:"not null" json:"amount_cny"` // 人民币金额，单位：分
	PointsAmount  int64      `gorm:"not null" json:"points_amount"`
	Status        string     `gorm:"size:16;not null;default:pending;index" json:"status"`
	Vouchers      []string   `gorm:"type:text;serializer:json" json:"vouchers"` // 打款凭证图片 URL
	Note          string     `gorm:"size:512" json:"note"`
	ReviewNote    string     `gorm:"size:512" json:"review_note"`
	ReviewedAt    *time.Time `json:"reviewed_at"`
	ReviewedBy    *uint      `json:"reviewed_by"`

	Merchant *Merchant `gorm:"foreignKey:MerchantID" json:"merchant,omitempty"`
}

// MerchantAlertConfig 低余额告警配置（每商户一份）。
// 通知策略：余额低于阈值期间按 NotifyIntervalMinutes 间隔重复通知，
// 最多 MaxNotifications 次（0 表示不限）；余额恢复阈值以上后重置计数。
type MerchantAlertConfig struct {
	ID        uint      `gorm:"primarykey" json:"id"`
	CreatedAt time.Time `json:"created_at"`
	UpdatedAt time.Time `json:"updated_at"`

	MerchantID      uint   `gorm:"not null;uniqueIndex" json:"merchant_id"`
	Enabled         bool   `gorm:"not null;default:false" json:"enabled"`
	ThresholdPoints int64  `gorm:"not null;default:0" json:"threshold_points"`
	WebhookURL      string `gorm:"size:1024" json:"-"`

	// 通知频率策略
	NotifyIntervalMinutes int        `gorm:"not null;default:60" json:"notify_interval_minutes"`
	MaxNotifications      int        `gorm:"not null;default:5" json:"max_notifications"`
	LastNotifiedAt        *time.Time `json:"last_notified_at"`
	NotificationCount     int        `gorm:"not null;default:0" json:"notification_count"`
}

// 告警通知渠道类型
const (
	AlertChannelDingtalk = "dingtalk"
	AlertChannelFeishu   = "feishu"
	AlertChannelWecom    = "wecom"
	AlertChannelBark     = "bark"
	AlertChannelWebhook  = "webhook"
)

// AlertChannelConfig 告警渠道专属配置：webhook 类渠道用 WebhookURL，Bark 用 Server+Key。
type AlertChannelConfig struct {
	WebhookURL string `json:"webhook_url,omitempty"`
	Server     string `json:"server,omitempty"`
	Key        string `json:"key,omitempty"`
}

// AlertNotifyChannel 余额告警通知渠道，Config 为渠道专属 JSON 配置。
type AlertNotifyChannel struct {
	ID        uint           `gorm:"primarykey" json:"id"`
	CreatedAt time.Time      `json:"created_at"`
	UpdatedAt time.Time      `json:"updated_at"`
	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`

	MerchantID  uint               `gorm:"not null;index" json:"merchant_id"`
	ChannelType string             `gorm:"size:32;not null" json:"channel_type"`
	Name        string             `gorm:"size:64" json:"name"`
	Config      AlertChannelConfig `gorm:"type:text;serializer:json" json:"config"`
	Enabled     bool               `gorm:"not null;default:true" json:"enabled"`
}