package model

import "time"

type Workflow struct {
	BaseModel
	Name        string         `json:"name"`
	Description string         `json:"description"`
	Status      int            `json:"status"`                             // 1-启用 2-禁用
	Nodes       []WorkflowNode `json:"nodes" gorm:"foreignKey:WorkflowID"` // 添加外键定义
}

type WorkflowNode struct {
	BaseModel
	WorkflowID uint   `json:"workflow_id" gorm:"index"` // 添加索引
	Name       string `json:"name"`
	Type       string `json:"type"`       // start, end, task, approval等
	Handler    string `json:"handler"`    // 处理函数
	NextNodes  string `json:"next_nodes"` // 逗号分隔的下个节点ID
	Position   int    `json:"position"`
	// 可选：添加回Workflow的引用
	Workflow Workflow `json:"-" gorm:"foreignKey:WorkflowID"`
}

type WorkflowInstance struct {
	BaseModel
	WorkflowID    uint           `json:"workflow_id"`
	Status        string         `json:"status"` // running, completed, canceled
	CurrentNodeID uint           `json:"current_node_id"`
	Data          string         `json:"data" gorm:"type:text"`              // JSON格式的业务数据
	Tasks         []WorkflowTask `json:"tasks" gorm:"foreignKey:InstanceID"` // 添加外键定义
}

type WorkflowTask struct {
	BaseModel
	InstanceID uint      `json:"instance_id" gorm:"index"` // 添加索引
	NodeID     uint      `json:"node_id"`
	Status     string    `json:"status"`                  // pending, processing, completed, canceled
	Result     string    `json:"result" gorm:"type:text"` // JSON格式的处理结果
	Handler    string    `json:"handler"`
	Assignee   uint      `json:"assignee"` // 处理人
	StartTime  time.Time `json:"start_time"`
	EndTime    time.Time `json:"end_time"`
	// 可选：添加回WorkflowInstance的引用
	Instance WorkflowInstance `json:"-" gorm:"foreignKey:InstanceID"`
}