package models

import "time"

// =============================================================
// 平台端推广佣金模型（表结构见 docs/sql/create_platform_commission.sql）
// 业务约定：
//   1. 佣金由平台自有资金支出，与租户收款资金流解耦；
//   2. 佣金在「业务订单支付成功」事件上按启用中的规则生成，初始状态 payable；
//   3. 一笔支付单 + 同一推广方只生成一张佣金单（uk_pay_promoter，业务层再按 pay_no 查重）。
// =============================================================

// PlatformCommissionRule 佣金规则 yz_platform_commission_rule
type PlatformCommissionRule struct {
	ID             uint64     `orm:"column(id);pk;auto" json:"id"`
	RuleName       string     `orm:"column(rule_name);size(128)" json:"rule_name"`
	CalcType       string     `orm:"column(calc_type);size(20)" json:"calc_type"`
	Value          int64      `orm:"column(value);default(0)" json:"value"`
	TierJSON       *string    `orm:"column(tier_json);type(text);null" json:"-"`
	OrderType      string     `orm:"column(order_type);size(32)" json:"order_type"`
	Status         int8       `orm:"column(status);default(1)" json:"status"`
	Remark         string     `orm:"column(remark);size(255)" json:"remark"`
	CreateUserID   string     `orm:"column(create_user_id);size(64)" json:"create_user_id"`
	CreateUserName string     `orm:"column(create_user_name);size(128)" json:"create_user_name"`
	CreateTime     time.Time  `orm:"column(create_time);auto_now_add;type(datetime)" json:"create_time"`
	UpdateTime     time.Time  `orm:"column(update_time);auto_now;type(datetime)" json:"update_time"`
	DeleteTime     *time.Time `orm:"column(delete_time);type(datetime);null" json:"delete_time"`
}

func (m *PlatformCommissionRule) TableName() string { return "yz_platform_commission_rule" }

// 计算方式
const (
	CommissionCalcPercent = "percent" // 按比例：value = 百分比 × 100（5% 存 500）
	CommissionCalcFixed   = "fixed"   // 固定金额：value = 分
	CommissionCalcTiered  = "tiered"  // 阶梯：value 忽略，明细见 tier_json
)

// 适用订单类型
const (
	CommissionOrderTypeAll           = "all"
	CommissionOrderTypePlatformUsage = "platform_usage"
	CommissionOrderTypeModuleShop    = "module_shop"
	CommissionOrderTypeServiceFee    = "service_fee"
)

// CommissionTier 阶梯档位（tier_json 数组元素）
type CommissionTier struct {
	Min  int64  `json:"min"`  // 起始金额（分，含）
	Max  *int64 `json:"max"`  // 结束金额（分，不含）；null 表示不限
	Rate int64  `json:"rate"` // 比例：百分比 × 100
}

// PlatformCommissionOrder 佣金单（台账） yz_platform_commission_order
type PlatformCommissionOrder struct {
	ID           uint64     `orm:"column(id);pk;auto" json:"id"`
	CommissionNo string     `orm:"column(commission_no);size(40)" json:"commission_no"`
	PayNo        string     `orm:"column(pay_no);size(40)" json:"pay_no"`
	OutTradeNo   string     `orm:"column(out_trade_no);size(64)" json:"out_trade_no"`
	RuleID       uint64     `orm:"column(rule_id);default(0)" json:"rule_id"`
	RuleName     string     `orm:"column(rule_name);size(128)" json:"rule_name"`
	CalcType     string     `orm:"column(calc_type);size(20)" json:"calc_type"`
	PromoterID   string     `orm:"column(promoter_id);size(64)" json:"promoter_id"`
	PromoterName string     `orm:"column(promoter_name);size(128)" json:"promoter_name"`
	PromoterType string     `orm:"column(promoter_type);size(32)" json:"promoter_type"`
	BaseAmount   int64      `orm:"column(base_amount);default(0)" json:"base_amount"`
	Amount       int64      `orm:"column(amount);default(0)" json:"amount"`
	Status       string     `orm:"column(status);size(20)" json:"status"`
	PayMethod    string     `orm:"column(pay_method);size(20)" json:"pay_method"`
	PayVoucher   string     `orm:"column(pay_voucher);size(255)" json:"pay_voucher"`
	PaidAt       *time.Time `orm:"column(paid_at);type(datetime);null" json:"paid_at"`
	PaidUserID   string     `orm:"column(paid_user_id);size(64)" json:"paid_user_id"`
	PaidUserName string     `orm:"column(paid_user_name);size(128)" json:"paid_user_name"`
	Remark       string     `orm:"column(remark);size(255)" json:"remark"`
	CreateTime   time.Time  `orm:"column(create_time);auto_now_add;type(datetime)" json:"create_time"`
	UpdateTime   time.Time  `orm:"column(update_time);auto_now;type(datetime)" json:"update_time"`
	DeleteTime   *time.Time `orm:"column(delete_time);type(datetime);null" json:"delete_time"`
}

func (m *PlatformCommissionOrder) TableName() string { return "yz_platform_commission_order" }

// 佣金状态
const (
	CommissionStatusPayable       = "payable"        // 应付
	CommissionStatusSettled       = "settled"        // 已付
	CommissionStatusTaxProcessing = "tax_processing" // 税务处理中
	CommissionStatusCanceled      = "canceled"       // 已作废
)

// 发放方式
const (
	CommissionPayBank    = "bank"    // 银行转账
	CommissionPayBalance = "balance" // 余额抵扣
	CommissionPayManual  = "manual"  // 人工发放
	CommissionPayOffset  = "offset"  // 下期抵扣
)