package model

import (
	"aps_crm/constvar"
	"aps_crm/pkg/mysqlx"
	"errors"
	"fmt"
	"gorm.io/gorm"
)

type (
	// Invoice 销售发票
	Invoice struct {
		Id               int                        `json:"id" gorm:"column:id;primary_key;AUTO_INCREMENT"`
		Number           string                     `json:"number" gorm:"column:number;type:varchar(255);comment:发票编号"`
		ClientId         int                        `gorm:"client_id" json:"clientId"` // 客户id
		Client           Client                     `gorm:"foreignKey:ClientId"`
		InvoiceTypeId    int                        `gorm:"invoice_type_id" json:"invoiceTypeId"` // 发票类型id
		InvoiceType      InvoiceType                `gorm:"foreignKey:InvoiceTypeId"`
		PrincipalId      int                        `gorm:"principal_id" json:"principalId"`          // 销售负责人id
		Subject          string                     `gorm:"subject" json:"subject"`                   // 主题
		InvoiceStatusId  int                        `gorm:"invoice_status_id" json:"invoiceStatusId"` // 发票状态id
		InvoiceStatus    InvoiceStatus              `gorm:"foreignKey:InvoiceStatusId"`
		SourceType       constvar.InvoiceSourceType `gorm:"source_type" json:"sourceType"`              // 源单类型(1销售明细单2服务合同)
		SourceId         int                        `gorm:"source_id" json:"sourceId"`                  // 源单id
		TaxpayerIdNumber string                     `gorm:"taxpayer_id_number" json:"taxpayerIdNumber"` // 纳税识别号
		InvoiceNumber    string                     `gorm:"invoice_number" json:"invoiceNumber"`        // 发票号码
		InvoiceDate      string                     `gorm:"invoice_date" json:"invoiceDate"`            // 开票日期
		CourierNumber    string                     `gorm:"courier_number" json:"courierNumber"`        // 物流单号
		CourierCompanyId int                        `gorm:"courier_company_id" json:"courierCompanyId"` // 物流公司
		CourierCompany   CourierCompany             `gorm:"foreignKey:CourierCompanyId"`
		Products         []*Product                 `json:"products" gorm:"many2many:invoice_product;"`
		CodeStandID      string                     `json:"codeStandID" gorm:"column:code_stand_id;type:varchar(255);comment:编码id"`
	}

	// InvoiceSearch 销售发票搜索条件
	InvoiceSearch struct {
		Invoice
		Orm          *gorm.DB
		QueryClass   constvar.InvoiceQueryClass
		KeywordType  constvar.InvoiceKeywordType
		Keyword      string
		PageNum      int
		PageSize     int
		PrincipalIds []int
	}
)

func (Invoice) TableName() string {
	return "invoice"
}

func NewInvoiceSearch() *InvoiceSearch {
	return &InvoiceSearch{
		Orm: mysqlx.GetDB(),
	}
}

func (slf *InvoiceSearch) SetSourceType(sourceType constvar.InvoiceSourceType) *InvoiceSearch {
	slf.SourceType = sourceType
	return slf
}

func (slf *InvoiceSearch) SetSourceId(sourceId int) *InvoiceSearch {
	slf.SourceId = sourceId
	return slf
}

func (slf *InvoiceSearch) SetPrincipalIds(principalIds []int) *InvoiceSearch {
	slf.PrincipalIds = principalIds
	return slf
}

func (slf *InvoiceSearch) build() *gorm.DB {
	var db = slf.Orm.Model(&Invoice{})
	if slf.Id != 0 {
		db = db.Where("id = ?", slf.Id)
	}

	if slf.SourceType > 0 {
		db = db.Where("source_type = ?", slf.SourceType)
	}

	if slf.SourceId > 0 {
		db = db.Where("source_id = ?", slf.SourceId)
	}
	if slf.Number != "" {
		db.Where("number = ?", slf.Number)
	}
	if len(slf.PrincipalIds) > 0 {
		db = db.Where("principal_id in ?", slf.PrincipalIds)
	}

	return db
}

func (slf *InvoiceSearch) Create(record *Invoice) error {
	var db = slf.build()
	return db.Create(record).Error
}

func (slf *InvoiceSearch) CreateBatch(records []*Invoice) error {
	var db = slf.build()
	return db.Create(records).Error
}

func (slf *InvoiceSearch) Delete() error {
	var db = slf.build()
	return db.Delete(&Invoice{}).Error
}

func (slf *InvoiceSearch) Update(record *Invoice) error {
	var db = slf.build()
	return db.Updates(record).Error
}

func (slf *InvoiceSearch) FindAll() ([]*Invoice, error) {
	var db = slf.build()
	var record = make([]*Invoice, 0)
	err := db.Find(&record).Error
	return record, err
}

func (slf *InvoiceSearch) Count() (int64, error) {
	var db = slf.build()
	var total int64
	err := db.Count(&total).Error
	return total, err
}

func (slf *InvoiceSearch) MaxAutoIncr() (int, error) {
	type Result struct {
		Max int
	}

	var (
		result Result
		db     = slf.build()
	)

	err := db.Select("MAX(id) as max").Scan(&result).Error
	if err != nil {
		return result.Max, fmt.Errorf("max err: %v", err)
	}
	return result.Max, nil
}

func (slf *InvoiceSearch) SetNumber(number string) *InvoiceSearch {
	slf.Number = number
	return slf
}

func (slf *InvoiceSearch) SetId(id int) *InvoiceSearch {
	slf.Id = id
	return slf
}

func (slf *InvoiceSearch) SetOrm(tx *gorm.DB) *InvoiceSearch {
	slf.Orm = tx
	return slf
}

func (slf *InvoiceSearch) First() (*Invoice, error) {
	var db = slf.build()
	var record = new(Invoice)
	err := db.First(record).Error
	return record, err
}

func (slf *InvoiceSearch) Updates(values interface{}) error {
	var db = slf.build()
	return db.Updates(values).Error
}

func (slf *InvoiceSearch) Save(record *Invoice) error {
	if record.Id == 0 {
		return errors.New("id为空")
	}
	var db = slf.build()

	if err := db.Save(record).Error; err != nil {
		return fmt.Errorf("save err: %v, record: %+v", err, record)
	}

	return nil
}

func (slf *InvoiceSearch) Find() ([]*Invoice, int64, error) {
	var db = slf.build()
	var records = make([]*Invoice, 0)
	var total int64
	if err := db.Count(&total).Error; err != nil {
		return records, total, err
	}
	if slf.PageNum > 0 && slf.PageSize > 0 {
		db = db.Limit(slf.PageSize).Offset((slf.PageNum - 1) * slf.PageSize)
	}

	err := db.
		Preload("Client").
		Preload("InvoiceType").
		Preload("InvoiceStatus").
		Preload("CourierCompany").
		Find(&records).Error
	return records, total, err
}

// InitDefaultData 初始化数据
func (slf *InvoiceSearch) InitDefaultData() error {
	var (
		db          = slf.Orm.Table(slf.TableName())
		total int64 = 0
	)
	if err := db.Count(&total).Error; err != nil {
		return err
	}
	if total != 0 {
		return nil
	}
	records := []*Invoice{}
	return slf.CreateBatch(records)
}