package postgres

import (
	"database/sql"

	"gitlab.mareshq.com/hq/backoffice/backoffice-api/pkg/training"
)

type TrainingRepository struct {
	db *sql.DB
}

func NewTrainingRepository(db *sql.DB) *TrainingRepository {
	return &TrainingRepository{db: db}
}

func (r *TrainingRepository) Create(t *training.Training) error {
	t.ID = training.NewID()
	_, err := r.db.Exec("INSERT INTO training (id, name, days, description, price) VALUES ($1, $2, $3)", t.ID, t.Name, t.Days, t.Description, t.Price)
	return err
}

func (r *TrainingRepository) Get(id training.ID) (*training.Training, error) {
	var t training.Training
	err := r.db.QueryRow("SELECT * FROM training WHERE id = $1", id).Scan(&t.ID, &t.Name, &t.Days, &t.Description, &t.Price)
	if err != nil {
		return nil, err
	}

	return &t, nil
}

func (r *TrainingRepository) Update(t *training.Training) error {
	_, err := r.db.Exec("UPDATE training SET name = $1, days = $2, description = $3, price = $4 WHERE id = $5", t.Name, t.Days, t.Description, t.Price, t.ID)
	return err
}

func (r *TrainingRepository) Delete(id training.ID) error {
	_, err := r.db.Exec("DELETE FROM training WHERE id = $1", id)
	return err
}

func (r *TrainingRepository) FindAll() ([]training.Training, error) {
	rows, err := r.db.Query("SELECT * FROM training")
	if err != nil {
		return nil, err
	}
	defer rows.Close()

	var trainings []training.Training
	for rows.Next() {
		var t training.Training
		err := rows.Scan(&t.ID, &t.Name, &t.Days, &t.Description, &t.Price)
		if err != nil {
			return nil, err
		}

		trainings = append(trainings, t)
	}

	return trainings, nil
}