package model

import (
	"time"

	"gorm.io/datatypes"
	"gorm.io/gorm"
)

// EmployeeCollectionPaymentMethod 是线下收款方式字典项。
// 状态语义见 constants.EmployeeCollectionPaymentMethodStatus*；被业务引用后只可停用。
type EmployeeCollectionPaymentMethod struct {
	gorm.Model
	BaseModel `gorm:"embedded"`
	Code      string `gorm:"column:code;type:varchar(64);not null;comment:稳定编码，未删除记录中唯一" json:"code"`
	Name      string `gorm:"column:name;type:varchar(100);not null;comment:收款方式名称" json:"name"`
	SortOrder int64  `gorm:"column:sort_order;type:bigint;not null;default:0;comment:排序值，从 0 递增" json:"sort_order"`
	Status    int    `gorm:"column:status;type:smallint;not null;default:1;comment:状态 0-禁用 1-启用" json:"status"`
	Remark    string `gorm:"column:remark;type:varchar(500);not null;default:'';comment:备注" json:"remark"`
}

// TableName 指定线下收款方式字典表名。
func (EmployeeCollectionPaymentMethod) TableName() string {
	return "tb_employee_collection_payment_method"
}

// EmployeeCollectionBill 是后台账号代客户经办业务形成的本地暂挂欠款。
// 由来源成功事务按来源唯一键 SourceKey 幂等创建，不存在历史扫描或手工建账路径。
type EmployeeCollectionBill struct {
	ID               uint           `gorm:"column:id;primaryKey;autoIncrement" json:"id"`
	SourceType       string         `gorm:"column:source_type;type:varchar(20);not null;comment:来源类型 order/recharge" json:"source_type"`
	SourceID         uint           `gorm:"column:source_id;not null;comment:来源业务主键ID" json:"source_id"`
	SourceKey        string         `gorm:"column:source_key;type:varchar(64);not null;comment:来源唯一键 order:{id} / recharge:{id}" json:"source_key"`
	SourceNo         string         `gorm:"column:source_no;type:varchar(64);not null;default:'';comment:来源单号快照" json:"source_no"`
	DebtorAccountID  uint           `gorm:"column:debtor_account_id;not null;comment:欠款人后台账号ID" json:"debtor_account_id"`
	DebtorSnapshot   datatypes.JSON `gorm:"column:debtor_snapshot;type:jsonb;not null;comment:欠款人账号快照" json:"debtor_snapshot"`
	CustomerSnapshot datatypes.JSON `gorm:"column:customer_snapshot;type:jsonb;not null;comment:来源客户或店铺只读快照" json:"customer_snapshot"`
	ReceivableAmount int64          `gorm:"column:receivable_amount;type:bigint;not null;comment:应收金额（分）" json:"receivable_amount"`
	ReceivedAmount   int64          `gorm:"column:received_amount;type:bigint;not null;default:0;comment:已核销金额（分）" json:"received_amount"`
	ReservedAmount   int64          `gorm:"column:reserved_amount;type:bigint;not null;default:0;comment:审批中预占金额（分）" json:"reserved_amount"`
	Status           int            `gorm:"column:status;type:smallint;not null;default:0;comment:状态 0-待核销 1-部分核销 2-已核销 3-已关闭" json:"status"`
	ClosedReason     string         `gorm:"column:closed_reason;type:varchar(500);not null;default:'';comment:关闭原因" json:"closed_reason"`
	ClosedAt         *time.Time     `gorm:"column:closed_at;type:timestamptz;comment:关闭时间" json:"closed_at,omitempty"`
	Creator          uint           `gorm:"column:creator;not null;default:0;comment:创建人用户ID" json:"creator"`
	Updater          uint           `gorm:"column:updater;not null;default:0;comment:最近更新人用户ID" json:"updater"`
	CreatedAt        time.Time      `gorm:"column:created_at;type:timestamptz;not null;autoCreateTime" json:"created_at"`
	UpdatedAt        time.Time      `gorm:"column:updated_at;type:timestamptz;not null;autoUpdateTime" json:"updated_at"`
}

// TableName 指定员工代收款账单表名。
func (EmployeeCollectionBill) TableName() string {
	return "tb_employee_collection_bill"
}

// EmployeeCollectionApplication 是一笔外部付款的核销申请，只保存最新审批实例ID用于展示。
type EmployeeCollectionApplication struct {
	ID                       uint             `gorm:"column:id;primaryKey;autoIncrement" json:"id"`
	ApplicantAccountID       uint             `gorm:"column:applicant_account_id;not null;comment:申请人后台账号ID" json:"applicant_account_id"`
	ActingOperatorID         uint             `gorm:"column:acting_operator_id;not null;default:0;comment:实际代办的超级管理员账号ID，0 表示本人办理" json:"acting_operator_id"`
	ActingReason             string           `gorm:"column:acting_reason;type:varchar(500);not null;default:'';comment:代办原因" json:"acting_reason"`
	PaymentMethodID          uint             `gorm:"column:payment_method_id;not null;comment:线下收款方式字典ID" json:"payment_method_id"`
	PaymentMethodCode        string           `gorm:"column:payment_method_code;type:varchar(64);not null;comment:收款方式编码快照" json:"payment_method_code"`
	PaymentMethodName        string           `gorm:"column:payment_method_name;type:varchar(100);not null;comment:收款方式名称快照" json:"payment_method_name"`
	PaidAmount               int64            `gorm:"column:paid_amount;type:bigint;not null;comment:人工确认付款金额（分）" json:"paid_amount"`
	PayerName                string           `gorm:"column:payer_name;type:varchar(100);not null;default:'';comment:付款方名称" json:"payer_name"`
	PaidAt                   time.Time        `gorm:"column:paid_at;type:timestamptz;not null;comment:付款时间" json:"paid_at"`
	ExternalTransactionNo    string           `gorm:"column:external_transaction_no;type:varchar(128);not null;default:'';comment:外部交易流水号" json:"external_transaction_no"`
	PaymentVoucherKeys       StringJSONBArray `gorm:"column:payment_voucher_keys;type:jsonb;not null;comment:支付凭证对象存储Key列表" json:"payment_voucher_keys"`
	Remark                   string           `gorm:"column:remark;type:varchar(500);not null;default:'';comment:申请备注" json:"remark"`
	Status                   int              `gorm:"column:status;type:smallint;not null;default:0;comment:状态 0-审批中 1-已通过 2-已驳回 3-已撤销或已关闭" json:"status"`
	LatestAttemptID          uint             `gorm:"column:latest_attempt_id;not null;default:0;comment:最新审批尝试记录ID" json:"latest_attempt_id"`
	LatestApprovalInstanceID uint             `gorm:"column:latest_approval_instance_id;not null;default:0;comment:最新通用审批实例ID" json:"latest_approval_instance_id"`
	DecidedAt                *time.Time       `gorm:"column:decided_at;type:timestamptz;comment:审批终态到达时间" json:"decided_at,omitempty"`
	TerminalReason           string           `gorm:"column:terminal_reason;type:varchar(500);not null;default:'';comment:异常终态说明" json:"terminal_reason"`
	Creator                  uint             `gorm:"column:creator;not null;default:0;comment:创建人用户ID" json:"creator"`
	Updater                  uint             `gorm:"column:updater;not null;default:0;comment:最近更新人用户ID" json:"updater"`
	CreatedAt                time.Time        `gorm:"column:created_at;type:timestamptz;not null;autoCreateTime" json:"created_at"`
	UpdatedAt                time.Time        `gorm:"column:updated_at;type:timestamptz;not null;autoUpdateTime" json:"updated_at"`
}

// TableName 指定核销申请表名。
func (EmployeeCollectionApplication) TableName() string {
	return "tb_employee_collection_application"
}

// EmployeeCollectionApplicationAttempt 是同一申请每次提交或重提对应的不可变审批材料。
// 其主键同时作为通用审批实例的业务ID，使每次提交各自持有独立审批实例。
type EmployeeCollectionApplicationAttempt struct {
	ID                    uint             `gorm:"column:id;primaryKey;autoIncrement" json:"id"`
	ApplicationID         uint             `gorm:"column:application_id;not null;comment:所属核销申请ID" json:"application_id"`
	AttemptNo             int              `gorm:"column:attempt_no;type:int;not null;comment:第几次提交，从 1 递增" json:"attempt_no"`
	PaymentMethodID       uint             `gorm:"column:payment_method_id;not null;comment:本次冻结的收款方式字典ID" json:"payment_method_id"`
	PaymentMethodCode     string           `gorm:"column:payment_method_code;type:varchar(64);not null;comment:本次冻结的收款方式编码" json:"payment_method_code"`
	PaymentMethodName     string           `gorm:"column:payment_method_name;type:varchar(100);not null;comment:本次冻结的收款方式名称" json:"payment_method_name"`
	PaidAmount            int64            `gorm:"column:paid_amount;type:bigint;not null;comment:本次冻结的付款金额（分）" json:"paid_amount"`
	PayerName             string           `gorm:"column:payer_name;type:varchar(100);not null;default:'';comment:本次冻结的付款方名称" json:"payer_name"`
	PaidAt                time.Time        `gorm:"column:paid_at;type:timestamptz;not null;comment:本次冻结的付款时间" json:"paid_at"`
	ExternalTransactionNo string           `gorm:"column:external_transaction_no;type:varchar(128);not null;default:'';comment:本次冻结的外部交易流水号" json:"external_transaction_no"`
	PaymentVoucherKeys    StringJSONBArray `gorm:"column:payment_voucher_keys;type:jsonb;not null;comment:本次冻结的支付凭证对象键列表" json:"payment_voucher_keys"`
	Remark                string           `gorm:"column:remark;type:varchar(500);not null;default:'';comment:本次冻结的备注" json:"remark"`
	SubmittedByAccountID  uint             `gorm:"column:submitted_by_account_id;not null;comment:本次实际提交账号ID" json:"submitted_by_account_id"`
	ActingReason          string           `gorm:"column:acting_reason;type:varchar(500);not null;default:'';comment:本次代办原因" json:"acting_reason"`
	AllocationSnapshot    datatypes.JSON   `gorm:"column:allocation_snapshot;type:jsonb;not null;comment:本次冻结的账单分摊快照" json:"allocation_snapshot"`
	ApprovalInstanceID    *uint            `gorm:"column:approval_instance_id;comment:本次尝试关联的通用审批实例ID" json:"approval_instance_id,omitempty"`
	CreatedAt             time.Time        `gorm:"column:created_at;type:timestamptz;not null;autoCreateTime" json:"created_at"`
}

// TableName 指定审批尝试记录表名。
func (EmployeeCollectionApplicationAttempt) TableName() string {
	return "tb_employee_collection_application_attempt"
}

// EmployeeCollectionApplicationAllocation 是申请对单张账单的本次分摊。
// 审批中预占账单余额，终态释放预占或转入已核销金额。
type EmployeeCollectionApplicationAllocation struct {
	ID            uint       `gorm:"column:id;primaryKey;autoIncrement" json:"id"`
	ApplicationID uint       `gorm:"column:application_id;not null;comment:所属核销申请ID" json:"application_id"`
	AttemptID     uint       `gorm:"column:attempt_id;not null;comment:所属审批尝试记录ID" json:"attempt_id"`
	BillID        uint       `gorm:"column:bill_id;not null;comment:目标账单ID" json:"bill_id"`
	Amount        int64      `gorm:"column:amount;type:bigint;not null;comment:本次分摊金额（分）" json:"amount"`
	Status        int        `gorm:"column:status;type:smallint;not null;default:0;comment:状态 0-审批中预占 1-已通过 2-已驳回或已释放" json:"status"`
	ReleasedAt    *time.Time `gorm:"column:released_at;type:timestamptz;comment:预占释放时间" json:"released_at,omitempty"`
	Creator       uint       `gorm:"column:creator;not null;default:0;comment:创建人用户ID" json:"creator"`
	Updater       uint       `gorm:"column:updater;not null;default:0;comment:最近更新人用户ID" json:"updater"`
	CreatedAt     time.Time  `gorm:"column:created_at;type:timestamptz;not null;autoCreateTime" json:"created_at"`
	UpdatedAt     time.Time  `gorm:"column:updated_at;type:timestamptz;not null;autoUpdateTime" json:"updated_at"`
}

// TableName 指定申请分摊表名。
func (EmployeeCollectionApplicationAllocation) TableName() string {
	return "tb_employee_collection_application_allocation"
}

// EmployeeCollectionBillRefund 是来源订单退款与账单之间的唯一冲销关联事实。
type EmployeeCollectionBillRefund struct {
	ID                   uint      `gorm:"column:id;primaryKey;autoIncrement" json:"id"`
	BillID               uint      `gorm:"column:bill_id;not null;comment:目标账单ID" json:"bill_id"`
	RefundID             uint      `gorm:"column:refund_id;not null;comment:退款申请ID" json:"refund_id"`
	SourceOrderID        uint      `gorm:"column:source_order_id;not null;comment:账单来源订单ID" json:"source_order_id"`
	RefundAmount         int64     `gorm:"column:refund_amount;type:bigint;not null;comment:本次退款成功金额（分）" json:"refund_amount"`
	BillReceivableAmount int64     `gorm:"column:bill_receivable_amount;type:bigint;not null;comment:冲销前账单应收金额快照（分）" json:"bill_receivable_amount"`
	Outcome              string    `gorm:"column:outcome;type:varchar(20);not null;comment:处理结果 closed_full/reduced/hint_only" json:"outcome"`
	ReducedAmount        int64     `gorm:"column:reduced_amount;type:bigint;not null;default:0;comment:实际冲减应收金额（分）" json:"reduced_amount"`
	CreatedAt            time.Time `gorm:"column:created_at;type:timestamptz;not null;autoCreateTime" json:"created_at"`
}

// TableName 指定退款冲销关联表名。
func (EmployeeCollectionBillRefund) TableName() string {
	return "tb_employee_collection_bill_refund"
}