package mongo

import (
	"context"
	
	"go.mongodb.org/mongo-driver/v2/bson"
)

// UpdateSet search documents using filter and updates the first it finds using the $set operator.
func (c *MongoClient) UpdateSet(ctx context.Context, database, name string, filter, data bson.M) (bool, error) {
	collection := c.GetCollection(database, name)

	prepareForUpdateSet(data)

	if err := c.DiscriminatorCheckAndApplyToFilter(ctx, name, filter); err != nil {
		return  false, err
	}

	if err := c.DiscriminatorOmitInData(name, data); err != nil {
		return  false, err
	}
	
	update := bson.M{ "$set": data }
	updateResult, err := collection.UpdateOne(ctx, filter, update)
	if err != nil {
		return false, err
	}

	changed := updateResult.ModifiedCount != 0

	return changed, nil
}

func prepareForUpdateSet(data bson.M) {
	ensureUpdatedAt(data)
}