wemgl

objectIDS, err := primitive.ObjectIDFromHex(id)
if err != nil {
	return 0, fmt.Errorf("deleteTask: couldn't convert to-do ID from input: %v", err)
}
idDoc := bson.D{{"_id", objectIDS}}
res, err := db.Collection(collName).DeleteOne(ctx, idDoc)
if err != nil {
	return 0, fmt.Errorf("deleteTask: couldn't delete to-do from db: %v", err)
}

wemgl

var t todo
idDoc := bson.D{{"_id", objectIDS}}
err = db.Collection(collName).FindOne(ctx, idDoc).Decode(&t)
if err != nil {
	return "", fmt.Errorf("updateTask: couldn't decode task from db: %v", err)
}
var task string
fmt.Println("old task:", t.Task)
fmt.Print("updated task: ")
for input.Scan() {

wemgl

res, err := db.Collection(collName).InsertOne(ctx, bson.D{
	{"task", t.Task},
	{"createdAt", primitive.DateTime(timeMillis(t.CreatedAt))},
	{"modifiedAt", primitive.DateTime(timeMillis(t.ModifiedAt))},
})
if err != nil {
	return "", fmt.Errorf("createTask: task for to-do list couldn't be created: %v", err)
}
return res.InsertedID.(primitive.ObjectID).Hex(), nil

wemgl

func configDB(ctx context.Context) (*mongo.Database, error) {
	uri := fmt.Sprintf(`mongodb://%s:%s@%s/%s`,
		ctx.Value(usernameKey).(string),
		ctx.Value(passwordKey).(string),
		ctx.Value(hostKey).(string),
		ctx.Value(databaseKey).(string),
	)
	client, err := mongo.NewClient(options.Client().ApplyURI(uri))
	if err != nil {
		return nil, fmt.Errorf("todo: couldn't connect to mongo: %v", err)

wemgl

// package declaration and imports omitted for brevity

type key string

const (
	hostKey     = key("hostKey")
	usernameKey = key("usernameKey")
	passwordKey = key("passwordKey")
	databaseKey = key("databaseKey")
)