package storage

import (
	"time"

	"gorm.io/gorm"
)

// Auto-generate string names for the various constants
//go:generate stringer -type InboundJobSource

type InboundJobSource uint8

// TODO: Adjust and expand these constants later, depending on sources
const (
	InJobSourceAccInbox InboundJobSource = iota
	InJobSourceServerInbox
	InJobSourceApiMasto
	InJobSourceApiLinstrom
)

// Store inbound jobs from api and ap in the db until they finished processing
// Ensures data consistency in case the server is forced to restart unexpectedly
// No DeletedAt field since don't want completed jobs to linger in the db for any longer than necessary
type InboundJob struct {
	ID        uint `gorm:"primarykey"`
	CreatedAt time.Time
	// Raw data, could be json or gob data, check source for how to interpret
	RawData []byte `gorm:"->;<-create"`
	// Where this job is coming from. Important for figuring out how to decode the raw data and what to do with it
	Source InboundJobSource `gorm:"->;<-create"`

	// Section: Various data
	// TODO: Expand based on needs

	// If from an inbox, include the owner id here
	InboxOwner *string `gorm:"->;<-create"`
}

func (s *Storage) AddNewInboundJob(data []byte, source InboundJobSource, inboxOwner *string) {
	newJob := InboundJob{
		RawData:    data,
		Source:     source,
		InboxOwner: inboxOwner,
	}
	s.db.Create(&newJob)
}

// Get the specified amount of jobs, sorted by age (oldest first)
func (s *Storage) GetOldestInboundJobs(amount int) ([]InboundJob, error) {
	jobs := []InboundJob{}
	switch err := s.db.Order("id asc, created_at asc").Limit(amount).Find(jobs).Error; err {
	case gorm.ErrRecordNotFound:
		return nil, ErrEntryNotFound
	case nil:
		return jobs, nil
	default:
		return nil, err
	}
}