// Copyright 2025 linux.do
// Copyright 2026 Arctel.net
// SPDX-License-Identifier: Apache-2.0

// Package task 定义异步任务类型与调度常量
package task

// 异步任务类型标识
const (
	CleanupUnusedUploadsTask = "upload:cleanup_unused"
	SendEmailTask            = "mail:send"
)

// 任务队列名称
const (
	QueueDefault = "default"
)

// 管理员可下发的任务类型标识
const (
	TaskTypeCleanupUploads = "cleanup_unused_uploads"
	TaskTypeSendEmail      = "send_email"
)

// defaultMaxRetry 任务默认最大重试次数
const defaultMaxRetry = 3

// TaskParam 任务参数定义
//
//nolint:revive // TaskParam 保留完整名称以避免与通用 Param 混淆
type TaskParam struct {
	Name        string `json:"Name"`        // 参数键名
	Label       string `json:"Label"`       // 显示名称
	Type        string `json:"Type"`        // 类型：string, text, number
	Required    bool   `json:"Required"`    // 是否必填
	Placeholder string `json:"Placeholder"` // 占位符
	Description string `json:"Description"` // 描述
}

// TaskMeta 任务元数据
//
//nolint:revive // TaskMeta 保留完整名称以避免与通用 Meta 混淆
type TaskMeta struct {
	Type         string
	AsynqTask    string
	Name         string
	Description  string
	SupportsTime bool
	MaxRetry     int
	Queue        string
	Retryable    bool // 是否支持手动重试
	Params       []TaskParam
}

// DispatchableTasks 可下发的任务列表
var DispatchableTasks = []TaskMeta{
	{
		Type:         TaskTypeCleanupUploads,
		AsynqTask:    CleanupUnusedUploadsTask,
		Name:         "清理未使用上传",
		Description:  "清理超过1小时未使用的上传文件",
		SupportsTime: false,
		MaxRetry:     defaultMaxRetry,
		Queue:        QueueDefault,
		Retryable:    true,
	},
	{
		Type:         TaskTypeSendEmail,
		AsynqTask:    SendEmailTask,
		Name:         "发送邮件",
		Description:  "异步发送系统邮件",
		SupportsTime: false,
		MaxRetry:     defaultMaxRetry,
		Queue:        QueueDefault,
		Retryable:    true,
		Params: []TaskParam{
			{
				Name:        "to",
				Label:       "接收邮箱 (To)",
				Type:        "string",
				Required:    true,
				Placeholder: "receiver@example.com",
				Description: "接收邮件的目标邮箱地址",
			},
			{
				Name:        "subject",
				Label:       "邮件主题 (Subject)",
				Type:        "string",
				Required:    true,
				Placeholder: "请输入邮件主题",
				Description: "发送邮件的主题标题",
			},
			{
				Name:        "body",
				Label:       "邮件内容 (Body)",
				Type:        "text",
				Required:    true,
				Placeholder: "请输入邮件内容（支持 HTML 格式）",
				Description: "发送邮件的内容主体",
			},
		},
	},
}

// GetTaskMeta 根据任务类型获取元数据
func GetTaskMeta(taskType string) *TaskMeta {
	for _, t := range DispatchableTasks {
		if t.Type == taskType {
			return &t
		}
	}
	return nil
}