package stations

import (
	"time"

	"git.fjla.uk/owlboard/timetable-mgr/dbAccess"
	"git.fjla.uk/owlboard/timetable-mgr/log"
	"go.uber.org/zap"
)

func Check() {
	oldMetadata, err := dbAccess.GetStationsMetadata()
	if err != nil {
		log.Error("Error reading Stations metadata", zap.Error(err))
	}
	if oldMetadata == nil {
		log.Info("No old metadata for stations, rebuilding")
	} else {
		timeSinceLastUpdate := time.Since(oldMetadata.LastUpdate)
		if timeSinceLastUpdate <= time.Hour*24*7 {
			log.Info("Stations update not required")
			return
		}
	}

	ok := run()
	if !ok {
		log.Error("Error updating Stations data")
	}
}

func run() bool {
	// Download
	data, data2, err := download()
	log.Info("Downloaded station data from two sources")
	if err != nil {
		log.Error("error downloading station data", zap.Error(err))
		return false
	}

	// Parse
	stations, err := parseData(data, data2)
	log.Info("Parsed station data")
	if err != nil {
		log.Error("error parsing station data", zap.Error(err))
		return false
	}

	// Drop
	err = dbAccess.DropCollection("stations")
	if err != nil {
		log.Error("Error dropping stations collection", zap.Error(err))
	}

	// Push
	err = dbAccess.PutManyNewStations(&stations)
	if err != nil {
		log.Error("Error putting new station data", zap.Error(err))
	}

	err = dbAccess.CreateStationIndeces()
	if err != nil {
		log.Error("Error creating station indeces", zap.Error(err))
	}

	ok := dbAccess.SetStationsMetadata(time.Now())
	if !ok {
		log.Warn("Error setting new metadata for Stations")
	}

	return true
}