package main

import (
	"errors"
	"local/storage"
	"local/truckstop/broker"
	"local/truckstop/config"
	"log"
	"time"
)

func main() {
	if err := _main(); err != nil {
		panic(err)
	}
}

func _main() error {
	for {
		if err := config.Refresh(); err != nil {
			return err
		}
		if err := once(); err != nil {
			return err
		}
		time.Sleep(config.Get().Interval.Get())
	}
	return nil
}

func once() error {
	alljobs, err := getJobs()
	if err != nil {
		return err
	}
	newjobs, err := dropStaleJobs(alljobs)
	if err != nil {
		return err
	}
	jobs, err := dropBanlistJobs(newjobs)
	if err != nil {
		return err
	}
	for i := range jobs {
		if err := sendJob(jobs[i]); err != nil {
			return err
		}
		if err := config.Get().DB().Set(jobs[i].ID, []byte(`sent`)); err != nil {
			return err
		}
	}
	return nil
}

func getJobs() ([]broker.Job, error) {
	states := config.Get().States
	brokers := []broker.Broker{broker.NewNTGVision().WithMock()}
	jobs := []broker.Job{}
	for _, broker := range brokers {
		somejobs, err := broker.Search(states)
		if err != nil {
			return nil, err
		}
		jobs = append(jobs, somejobs...)
	}
	return jobs, nil
}

func dropStaleJobs(jobs []broker.Job) ([]broker.Job, error) {
	db := config.Get().DB()
	for i := len(jobs) - 1; i >= 0; i-- {
		if _, err := db.Get(jobs[i].ID); err == storage.ErrNotFound {
		} else if err != nil {
			return nil, err
		} else {
			jobs = append(jobs[:i], jobs[i+1:]...)
		}
	}
	return jobs, nil
}

func dropBanlistJobs(jobs []broker.Job) ([]broker.Job, error) {
	// TODO
	return jobs, nil
}

func sendJob(job broker.Job) error {
	// TODO
	log.Printf("found job: %s", job)
	return nil
	return errors.New("not impl: sendJob")
}