package models

import (
	"time"

	"gorm.io/gorm"
)

// User 模型
type User struct {
	ID        uint           `gorm:"primaryKey" json:"id"`
	Username  string         `gorm:"uniqueIndex;size:255" json:"username"`
	Password  string         `gorm:"size:255" json:"-"`
	Name      string         `gorm:"size:255" json:"name"`
	Email     string         `gorm:"size:255" json:"email"`
	Role      string         `gorm:"size:50;default:'user'" json:"role"`
	CreatedAt time.Time      `json:"createdAt"`
	UpdatedAt time.Time      `json:"updatedAt"`
	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
	Serials   []Serial       `gorm:"foreignKey:CreatedBy" json:"-"`
}

// Company 模型
type Company struct {
	ID          uint           `gorm:"primaryKey" json:"id"`
	CompanyName string         `gorm:"uniqueIndex;size:255" json:"companyName"`
	IsActive    bool           `gorm:"default:true" json:"isActive"`
	CreatedAt   time.Time      `json:"createdAt"`
	UpdatedAt   time.Time      `json:"updatedAt"`
	DeletedAt   gorm.DeletedAt `gorm:"index" json:"-"`
	Serials     []Serial       `gorm:"foreignKey:CompanyName;references:CompanyName" json:"-"`
}

// Serial 模型
type Serial struct {
	ID           uint           `gorm:"primaryKey" json:"id"`
	SerialNumber string         `gorm:"uniqueIndex;size:255" json:"serialNumber"`
	CompanyName  string         `gorm:"index;size:255" json:"companyName"`
	ValidUntil   *time.Time     `json:"validUntil"`
	IsActive     bool           `gorm:"default:true" json:"isActive"`
	CreatedBy    *uint          `json:"createdBy"`
	CreatedAt    time.Time      `json:"createdAt"`
	UpdatedAt    time.Time      `json:"updatedAt"`
	DeletedAt    gorm.DeletedAt `gorm:"index" json:"-"`
	User         *User          `gorm:"foreignKey:CreatedBy" json:"user,omitempty"`
	Company      *Company       `gorm:"foreignKey:CompanyName;references:CompanyName" json:"company,omitempty"`
}

// UserDTO 数据传输对象
type UserDTO struct {
	ID        uint      `json:"id"`
	Username  string    `json:"username"`
	Name      string    `json:"name"`
	Email     string    `json:"email"`
	Role      string    `json:"role"`
	CreatedAt time.Time `json:"createdAt"`
}

// LoginDTO 登录请求数据
type LoginDTO struct {
	Username string `json:"username" validate:"required"`
	Password string `json:"password" validate:"required,min=6"`
}

// ChangePasswordDTO 密码修改请求数据
type ChangePasswordDTO struct {
	CurrentPassword string `json:"currentPassword" validate:"required"`
	NewPassword     string `json:"newPassword" validate:"required,min=6"`
}

// UpdateProfileDTO 个人信息更新请求数据
type UpdateProfileDTO struct {
	Name  string `json:"name" validate:"required"`
	Email string `json:"email" validate:"required,email"`
}

// CreateUserDTO 管理员创建用户请求
type CreateUserDTO struct {
	Username string `json:"username" validate:"required,min=3,max=50"`
	Password string `json:"password" validate:"required,min=6"`
	Name     string `json:"name" validate:"required"`
	Email    string `json:"email" validate:"omitempty,email"`
	Role     string `json:"role" validate:"required,oneof=admin technician employee user"`
}

// UpdateUserDTO 管理员更新用户信息请求
type UpdateUserDTO struct {
	Name  string `json:"name,omitempty"`
	Email string `json:"email,omitempty" validate:"omitempty,email"`
	Role  string `json:"role,omitempty" validate:"omitempty,oneof=admin technician employee user"`
}

// AdminResetPasswordDTO 管理员重置用户密码
type AdminResetPasswordDTO struct {
	NewPassword string `json:"newPassword" validate:"required,min=6"`
}

// GenerateSerialDTO 生成序列号请求数据
type GenerateSerialDTO struct {
	CompanyName string `json:"companyName" validate:"required"`
	Quantity    int    `json:"quantity" validate:"min=1,max=1000"`
	ValidDays   int    `json:"validDays" validate:"min=1,max=3650"`
}

// GenerateWithPrefixDTO 带前缀生成序列号请求数据
type GenerateWithPrefixDTO struct {
	CompanyName  string `json:"companyName" validate:"required"`
	Quantity     int    `json:"quantity" validate:"min=1,max=1000"`
	ValidDays    int    `json:"validDays" validate:"min=1,max=3650"`
	SerialPrefix string `json:"serialPrefix" validate:"omitempty,alphanum"`
}

// UpdateSerialDTO 序列号更新请求数据
type UpdateSerialDTO struct {
	CompanyName string     `json:"companyName,omitempty" validate:"omitempty"`
	ValidUntil  *time.Time `json:"validUntil,omitempty"`
	IsActive    *bool      `json:"isActive,omitempty"`
}

// QRCodeDTO 二维码生成请求数据
type QRCodeDTO struct {
	BaseUrl string `json:"baseUrl,omitempty"`
}

// LoginResponse 登录响应
type LoginResponse struct {
	Message     string  `json:"message"`
	AccessToken string  `json:"accessToken"`
	User        UserDTO `json:"user"`
}

// BaseResponse 基础响应
type BaseResponse struct {
	Message string `json:"message"`
}

// ErrorResponse 错误响应
type ErrorResponse struct {
	Message string `json:"message"`
	Error   string `json:"error,omitempty"`
}

// DataResponse 数据响应
type DataResponse struct {
	Message string `json:"message"`
	Data    any    `json:"data"`
}

// PaginationResponse 分页响应
type PaginationResponse struct {
	Message    string     `json:"message"`
	Data       any        `json:"data"`
	Pagination Pagination `json:"pagination"`
}

// Pagination 分页信息
type Pagination struct {
	Page       int   `json:"page"`
	Limit      int   `json:"limit"`
	Total      int64 `json:"total"`
	TotalPages int   `json:"totalPages"`
}

// QRCodeResponse 二维码响应
type QRCodeResponse struct {
	Message    string `json:"message"`
	QRCodeData string `json:"qrCodeData"`
	QueryURL   string `json:"queryUrl"`
}

// CompanyResponse 企业响应
type CompanyResponse struct {
	Message string  `json:"message"`
	Company Company `json:"company"`
}

// CompanyDataRequest 企业数据请求
type CompanyDataRequest struct {
	CompanyName string `json:"companyName" validate:"required"`
}

// CompanyUpdateRequest 企业更新请求
type CompanyUpdateRequest struct {
	CompanyName string `json:"companyName"`
	IsActive    *bool  `json:"isActive"`
}

// CompanyStatsOverviewDTO 企业统计概览
type CompanyStatsOverviewDTO struct {
	TotalCompanies          int64 `json:"totalCompanies"`
	ActiveCompanies         int64 `json:"activeCompanies"`
	InactiveCompanies       int64 `json:"inactiveCompanies"`
	TotalSerials            int64 `json:"totalSerials"`
	ActiveSerials           int64 `json:"activeSerials"`
	RevokedSerials          int64 `json:"revokedSerials"`
	TotalEmployeeSerials    int64 `json:"totalEmployeeSerials"`
	ActiveEmployeeSerials   int64 `json:"activeEmployeeSerials"`
	RevokedEmployeeSerials  int64 `json:"revokedEmployeeSerials"`
	TotalAftersales         int64 `json:"totalAftersales"`
	PendingConfirmation     int64 `json:"pendingConfirmation"`
	ClosedAftersales        int64 `json:"closedAftersales"`
	RejectedAftersales      int64 `json:"rejectedAftersales"`
}

// EmployeeSerial 员工序列号模型
type EmployeeSerial struct {
	ID           uint           `gorm:"primaryKey" json:"id"`
	SerialNumber string         `gorm:"uniqueIndex;size:255" json:"serialNumber"`
	CompanyName  string         `gorm:"index;size:255" json:"companyName"`
	Position     string         `gorm:"size:255" json:"position"`
	EmployeeName string         `gorm:"size:255" json:"employeeName"`
	IsActive     bool           `gorm:"default:true" json:"isActive"`
	CreatedBy    *uint          `json:"createdBy"`
	CreatedAt    time.Time      `json:"createdAt"`
	UpdatedAt    time.Time      `json:"updatedAt"`
	DeletedAt    gorm.DeletedAt `gorm:"index" json:"-"`
	User         *User          `gorm:"foreignKey:CreatedBy" json:"user,omitempty"`
	Company      *Company       `gorm:"foreignKey:CompanyName;references:CompanyName" json:"company,omitempty"`
}

// GenerateEmployeeSerialDTO 生成员工序列号请求数据
type GenerateEmployeeSerialDTO struct {
	CompanyName  string `json:"companyName" validate:"required"`
	Position     string `json:"position" validate:"required"`
	EmployeeName string `json:"employeeName" validate:"required"`
	Quantity     int    `json:"quantity" validate:"min=1,max=1000"`
	SerialPrefix string `json:"serialPrefix,omitempty"`
}

// UpdateEmployeeSerialDTO 员工序列号更新请求数据
type UpdateEmployeeSerialDTO struct {
	CompanyName  string `json:"companyName,omitempty" validate:"omitempty"`
	Position     string `json:"position,omitempty" validate:"omitempty"`
	EmployeeName string `json:"employeeName,omitempty" validate:"omitempty"`
	IsActive     *bool  `json:"isActive,omitempty"`
}

// AftersalesOrder 售后工单模型
type AftersalesOrder struct {
	ID               uint   `gorm:"primaryKey" json:"id"`
	SerialNumber     string `gorm:"uniqueIndex;size:64" json:"serialNumber"`
	CompanyName      string `gorm:"index;size:255" json:"companyName"`
	CompanyAddress   string `gorm:"size:500" json:"companyAddress"`
	ContactName      string `gorm:"size:100" json:"contactName"`
	ContactPhone     string `gorm:"size:32" json:"contactPhone"`
	ServiceType      string `gorm:"size:32" json:"serviceType"`
	IssueDescription string `gorm:"type:text" json:"issueDescription"`
	ResolutionNote   string `gorm:"type:text" json:"resolutionNote"`

	WorkOrderStatus     string `gorm:"size:32;default:'created'" json:"workOrderStatus"`
	AuthorizationStatus string `gorm:"size:32;default:'pending'" json:"authorizationStatus"`

	TechnicianID *uint      `json:"technicianId"`
	CreatedBy    *uint      `json:"createdBy"`
	ScannedAt    *time.Time `json:"scannedAt"`
	ConfirmedAt  *time.Time `json:"confirmedAt"`
	RejectCount  int        `gorm:"default:0" json:"rejectCount"`
	Signature    string     `gorm:"type:text" json:"signature,omitempty"`

	CreatedAt time.Time      `json:"createdAt"`
	UpdatedAt time.Time      `json:"updatedAt"`
	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`

	Technician *User    `gorm:"foreignKey:TechnicianID" json:"technician,omitempty"`
	Creator    *User    `gorm:"foreignKey:CreatedBy" json:"creator,omitempty"`
	Company    *Company `gorm:"foreignKey:CompanyName;references:CompanyName" json:"company,omitempty"`
}

// CreateAftersalesOrderDTO 创建售后工单请求数据
type CreateAftersalesOrderDTO struct {
	CompanyName      string `json:"companyName" validate:"required"`
	CompanyAddress   string `json:"companyAddress" validate:"required"`
	ContactName      string `json:"contactName" validate:"required"`
	ContactPhone     string `json:"contactPhone" validate:"required,len=11"`
	ServiceType      string `json:"serviceType" validate:"required,oneof=software hardware maintenance"`
	IssueDescription string `json:"issueDescription" validate:"required"`
	TechnicianID     *uint  `json:"technicianId,omitempty"`
}

// UpdateAftersalesOrderDTO 更新售后工单请求数据
type UpdateAftersalesOrderDTO struct {
	CompanyAddress   string `json:"companyAddress,omitempty"`
	ContactName      string `json:"contactName,omitempty"`
	ContactPhone     string `json:"contactPhone,omitempty" validate:"omitempty,len=11"`
	ServiceType      string `json:"serviceType,omitempty" validate:"omitempty,oneof=software hardware maintenance"`
	IssueDescription string `json:"issueDescription,omitempty"`
	ResolutionNote   string `json:"resolutionNote,omitempty"`
	TechnicianID     *uint  `json:"technicianId,omitempty"`
}

// SubmitForConfirmationDTO 提交客户确认请求
type SubmitForConfirmationDTO struct {
	ResolutionNote string `json:"resolutionNote" validate:"required"`
}

// CustomerConfirmDTO 客户确认请求
// Signature 为客户在网页上手写签名的 base64 PNG dataURL，仅 authorize 时必填
// RejectReason 为客户拒绝的原因，仅 reject 时必填
type CustomerConfirmDTO struct {
	Action       string `json:"action" validate:"required,oneof=authorize reject"`
	Signature    string `json:"signature,omitempty" validate:"required_if=Action authorize"`
	RejectReason string `json:"rejectReason,omitempty" validate:"required_if=Action reject"`
}

// ReassignAftersalesDTO 重新分配技术员请求
type ReassignAftersalesDTO struct {
	TechnicianID uint `json:"technicianId" validate:"required"`
}

// AftersalesPublicView 公开查询返回视图（脱敏）
type AftersalesPublicView struct {
	SerialNumber        string     `json:"serialNumber"`
	CompanyName         string     `json:"companyName"`
	CompanyAddress      string     `json:"companyAddress"`
	ContactName         string     `json:"contactName"`
	ServiceType         string     `json:"serviceType"`
	IssueDescription    string     `json:"issueDescription"`
	ResolutionNote      string     `json:"resolutionNote"`
	WorkOrderStatus     string     `json:"workOrderStatus"`
	AuthorizationStatus string     `json:"authorizationStatus"`
	TechnicianName      string     `json:"technicianName"`
	CreatedAt           time.Time  `json:"createdAt"`
	ConfirmedAt         *time.Time `json:"confirmedAt"`
	Signature           string     `json:"signature,omitempty"`
}