package database

import (
	"time"
)

// Task status constants matching the requirement's state machine.
const (
	StatusIgnored      = "IGNORED"
	StatusReceived     = "RECEIVED"
	StatusAIProcessing = "AI_PROCESSING"
	StatusCallbackDone = "CALLBACK_DONE"
	StatusSMTPRetrying = "SMTP_RETRYING"
	StatusCompleted    = "COMPLETED"
	StatusFailed       = "FAILED"
)

// Task represents a single email processing unit tracked through the pipeline.
type Task struct {
	ID              uint   `gorm:"primaryKey;autoIncrement"`
	TaskUUID        string `gorm:"uniqueIndex;not null"`
	ThreadID        string `gorm:"index"`
	MessageID       string `gorm:"index"`
	Sender          string
	Subject         string
	BodyPlain       string
	DispatchContext string // JSON metadata from external rules pipeline.
	AIResponse      string
	Status          string `gorm:"index;not null"`
	AttemptOpenClaw int    `gorm:"default:0"`
	AttemptSMTP     int    `gorm:"default:0"`
	LastError       *string
	NextRetryAt     *time.Time
	CreatedAt       time.Time
	UpdatedAt       time.Time
}