Initial commit

internal/controllers/bookingController.go

@@ -0,0 +1,143 @@
+package controllers
+
+import (
+	"database/sql"
+	"errors"
+	"github.com/jmoiron/sqlx"
+	"go_project/internal/models"
+	"log"
+)
+
+type (
+	ListBookingParams struct {
+		Limit  int `db:"limit" json:"limit"`
+		Offset int `db:"offset" json:"offset"`
+	}
+
+	CreateBookingParams struct {
+		IdTables    int    `db:"id_tables" json:"id_tables"`
+		Reservation string `db:"reservation" json:"reservation"`
+		TimeReserve string `db:"time_reserve" json:"time_reserve"`
+		WhoBooked   string `db:"who_booked" json:"who_booked"`
+	}
+
+	UpdateBookingParams struct {
+		Id          int    `db:"id" json:"id"`
+		IdTables    int    `db:"id_tables" json:"id_tables"`
+		Reservation string `db:"reservation" json:"reservation"`
+		TimeReserve string `db:"time_reserve" json:"time_reserve"`
+		WhoBooked   string `db:"who_booked" json:"who_booked"`
+	}
+)
+
+func BookingById(db *sqlx.DB, id int) (*models.Booking, error) {
+	rows, err := db.Query("SELECT * FROM Bookings WHERE id = ?", id)
+
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	if isEmpty := !rows.Next(); isEmpty {
+		return nil, nil
+	}
+
+	result := new(models.Booking)
+	err = rows.Scan(&result.Id, &result.IdTables, &result.ReservationDatetime, &result.TimeReserve, &result.WhoBooked)
+
+	return result, err
+}
+
+func AllBookings(db *sqlx.DB, params ListBookingParams) ([]models.Booking, error) {
+	query := `SELECT * FROM Bookings ORDER BY id LIMIT $1 OFFSET $2`
+
+	rows, err := db.Query(query, params.Limit, params.Offset)
+
+	if err == sql.ErrNoRows {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var result []models.Booking
+	for rows.Next() {
+		var currentBooking models.Booking
+
+		err = rows.Scan(&currentBooking.Id, &currentBooking.IdTables, &currentBooking.ReservationDatetime, &currentBooking.TimeReserve, &currentBooking.WhoBooked)
+
+		if err != nil {
+			return nil, err
+		}
+
+		result = append(result, currentBooking)
+	}
+	return result, err
+}
+
+func CreateBooking(db *sqlx.DB, params CreateBookingParams) (*models.Booking, error) {
+	query := `
+        INSERT INTO Bookings (id_tables, reservation, time_reserve, who_booked) 
+        VALUES ($1, $2, $3, $4)
+        RETURNING id, id_tables, reservation, time_reserve, who_booked
+    `
+
+	var result models.Booking
+
+	err := db.QueryRow(query,
+		params.IdTables,
+		params.Reservation,
+		params.TimeReserve,
+		params.WhoBooked,
+	).Scan(
+		&result.Id,
+		&result.IdTables,
+		&result.ReservationDatetime,
+		&result.TimeReserve,
+		&result.WhoBooked,
+	)
+	if err != nil {
+		log.Printf("CreateBooking: Insertion operation of the Bookings object is failed: %v\n", err)
+		return nil, err
+	}
+
+	log.Println("CreateBooking: Insertion operation of the Bookings object is successful")
+	return &result, nil
+}
+
+func DeleteBookingById(db *sqlx.DB, id int) (sql.Result, error) {
+	sqlResult, err := db.Exec("DELETE FROM Bookings WHERE id = ?", id)
+
+	if err == nil {
+		log.Println("DeleteBookingById: Deletion operation of the Bookings object is successful")
+	}
+
+	return sqlResult, err
+}
+
+func UpdateBooking(db *sqlx.DB, params UpdateBookingParams) (*models.Booking, error) {
+	query := `
+		UPDATE Bookings 
+		SET id_tables = $1, reservation = $2, time_reserve = $3 
+		WHERE id = $4 
+		RETURNING id, id_tables, reservation, time_reserve, who_booked
+	`
+
+	result := &models.Booking{}
+	err := db.QueryRow(query, params.IdTables, params.Reservation, params.TimeReserve, params.Id).
+		Scan(&result.Id, &result.IdTables, &result.ReservationDatetime, &result.TimeReserve, &result.WhoBooked)
+	if err != nil {
+		switch {
+		case err == sql.ErrNoRows:
+			log.Printf("UpdateBooking: No rows affected for Booking ID %d", params.Id)
+			return nil, errors.New("update failed: no rows affected")
+		default:
+			log.Printf("UpdateBooking: Error executing query for Booking ID %d: %v", params.Id, err)
+			return nil, err
+		}
+	}
+
+	log.Printf("UpdateBooking: Successfully updated Booking ID %d", result.Id)
+	return result, nil
+}