package models

import (
	"time"

	"gorm.io/gorm"
)

// ApprovalTemplate 审批模板模型
type ApprovalTemplate struct {
	ID          uint           `gorm:"primarykey" json:"id"`
	Name        string         `gorm:"size:128;not null" json:"name"`
	Code        string         `gorm:"size:64;uniqueIndex;not null" json:"code"`
	Description string         `gorm:"size:500" json:"description"`
	Type        string         `gorm:"size:32;not null" json:"type"` // release, server, permission
	FormSchema  string         `gorm:"type:text" json:"form_schema"` // JSON
	FlowConfig  string         `gorm:"type:text" json:"flow_config"` // JSON
	Enabled     bool           `gorm:"default:true" json:"enabled"`
	CreatedAt   time.Time      `json:"created_at"`
	UpdatedAt   time.Time      `json:"updated_at"`
	DeletedAt   gorm.DeletedAt `gorm:"index" json:"-"`
}

// TableName 表名
func (ApprovalTemplate) TableName() string {
	return "approval_templates"
}

// ApprovalProcess 审批流程模型
type ApprovalProcess struct {
	ID         uint           `gorm:"primarykey" json:"id"`
	TemplateID uint           `json:"template_id"`
	Title      string         `gorm:"size:255;not null" json:"title"`
	Applicant  uint           `json:"applicant"`
	Status     string         `gorm:"size:32;default:pending" json:"status"` // pending, approved, rejected
	FormData   string         `gorm:"type:text" json:"form_data"` // JSON
	CurrentStep int           `gorm:"default:0" json:"current_step"`
	TotalSteps  int           `json:"total_steps"`
	ApprovedAt *time.Time     `json:"approved_at"`
	RejectedAt *time.Time     `json:"rejected_at"`
	RejectReason string       `gorm:"size:500" json:"reject_reason"`
	CreatedAt  time.Time      `json:"created_at"`
	UpdatedAt  time.Time      `json:"updated_at"`
	DeletedAt  gorm.DeletedAt `gorm:"index" json:"-"`

	// 关联
	Template *ApprovalTemplate `json:"template,omitempty"`
	ApplicantUser *User        `json:"applicant_user,omitempty"`
	Steps    []ApprovalStep    `json:"steps,omitempty"`
}

// TableName 表名
func (ApprovalProcess) TableName() string {
	return "approval_processes"
}

// ApprovalStep 审批步骤模型
type ApprovalStep struct {
	ID        uint           `gorm:"primarykey" json:"id"`
	ProcessID uint           `json:"process_id"`
	Step      int            `json:"step"`
	Approver  uint           `json:"approver"`
	Status    string         `gorm:"size:32;default:pending" json:"status"` // pending, approved, rejected
	Comment   string         `gorm:"size:500" json:"comment"`
	ApprovedAt *time.Time    `json:"approved_at"`
	CreatedAt time.Time      `json:"created_at"`
	UpdatedAt time.Time      `json:"updated_at"`

	// 关联
	ApproverUser *User `json:"approver_user,omitempty"`
}

// TableName 表名
func (ApprovalStep) TableName() string {
	return "approval_steps"
}

// CreateApprovalTemplateRequest 创建审批模板请求
type CreateApprovalTemplateRequest struct {
	Name        string `json:"name" binding:"required"`
	Code        string `json:"code" binding:"required"`
	Description string `json:"description"`
	Type        string `json:"type" binding:"required,oneof=release server permission"`
	FormSchema  string `json:"form_schema"`
	FlowConfig  string `json:"flow_config"`
}

// CreateApprovalProcessRequest 创建审批流程请求
type CreateApprovalProcessRequest struct {
	TemplateID uint   `json:"template_id" binding:"required"`
	Title      string `json:"title" binding:"required"`
	FormData   string `json:"form_data"`
}

// ApproveRequest 审批请求
type ApproveRequest struct {
	Status string `json:"status" binding:"required,oneof=approved rejected"`
	Comment string `json:"comment"`
}

// ApprovalStats 审批统计
type ApprovalStats struct {
	Pending  int64 `json:"pending"`
	Approved int64 `json:"approved"`
	Rejected int64 `json:"rejected"`
	Total    int64 `json:"total"`
	MyPending int64 `json:"my_pending"`
}