Database related operation files reorganization

internal/database/edit.go

@@ -0,0 +1,29 @@
+package database
+
+import (
+	"context"
+	"errors"
+
+	"github.com/gin-gonic/gin"
+)
+
+type DocumentUpdate struct {
+	Filter gin.H `json:"filter"`
+	Update gin.H `json:"update"`
+}
+
+func EditDocument(location Location, jsons DocumentUpdate) (int64, error) {
+	client := GetNewClient()
+	collection := client.Database(location.Database).Collection(location.Collection)
+	defer client.Disconnect(context.TODO())
+
+	result, err := collection.UpdateOne(context.TODO(), jsons.Filter, gin.H{"$set": jsons.Update})
+	if err != nil {
+		return 0, err
+	}
+	if result.MatchedCount == 0 {
+		return 0, errors.New("cannot find document matching filter.")
+	}
+
+	return result.ModifiedCount, nil
+}