package dbAccess

import (
	"context"

	"git.fjla.uk/owlboard/go-types/pkg/database"
	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/mongo"
	"go.mongodb.org/mongo-driver/mongo/options"
)

// Puts an array of Corpus Documents into the database
func PutManyCorpus(corpusData *[]database.CorpusEntry) error {
	collection := MongoClient.Database(DatabaseName).Collection(CorpusCollection)

	documents := convertCorpusToInterfaceSlice(corpusData)

	_, err := collection.InsertMany(context.Background(), *documents)
	if err != nil {
		return err
	}

	SetUpdateTime(CorpusCollection)
	return nil
}

// Puts an array of Stations documents into the database
func PutManyStations(stationsData *[]database.StationEntry) error {
	collection := MongoClient.Database(DatabaseName).Collection(StationsCollection)

	documents := convertStationsToInterfaceSlice(stationsData)

	_, err := collection.InsertMany(context.Background(), *documents)
	if err != nil {
		return err
	}

	SetUpdateTime(StationsCollection)
	return nil
}

// Converts []database.CorpusEntry types into interface slices required to put them into the database
func convertCorpusToInterfaceSlice(corpusData *[]database.CorpusEntry) *[]interface{} {
	interfaceSlice := make([]interface{}, len(*corpusData))
	for i, doc := range *corpusData {
		interfaceSlice[i] = doc
	}
	return &interfaceSlice
}

// Converts []database.StationEntry types into interface slices required to put them into the database
func convertStationsToInterfaceSlice(stationsData *[]database.StationEntry) *[]interface{} {
	interfaceSlice := make([]interface{}, len(*stationsData))
	for i, doc := range *stationsData {
		interfaceSlice[i] = doc
	}
	return &interfaceSlice
}

func CreateCorpusIndexes() error {
	coll := MongoClient.Database(DatabaseName).Collection(CorpusCollection)
	indexModels := []mongo.IndexModel{
		{
			Keys: bson.M{
				"tiploc": 1,
			},
			Options: options.Index().SetName("tiploc"),
		},
		{
			Keys: bson.M{
				"3alpha": 1,
			},
			Options: options.Index().SetName("3alpha"),
		},
	}

	_, err := coll.Indexes().CreateMany(context.Background(), indexModels)
	if err != nil {
		return err
	}
	return nil
}