package repositories

import (
	"context"

	"github.com/CubeCraft-Creations/Extrudex/backend/internal/models"
	"github.com/jackc/pgx/v5/pgxpool"
)

// MaterialModifierRepository handles database queries for material modifiers.
type MaterialModifierRepository struct {
	pool *pgxpool.Pool
}

// NewMaterialModifierRepository creates a MaterialModifierRepository backed by the given pool.
func NewMaterialModifierRepository(pool *pgxpool.Pool) *MaterialModifierRepository {
	return &MaterialModifierRepository{pool: pool}
}

// GetAll returns all material modifiers ordered by name.
func (r *MaterialModifierRepository) GetAll(ctx context.Context) ([]models.MaterialModifier, error) {
	rows, err := r.pool.Query(ctx, `
		SELECT id, name, description, created_at, updated_at
		FROM material_modifiers
		ORDER BY name
	`)
	if err != nil {
		return nil, err
	}
	defer rows.Close()

	var modifiers []models.MaterialModifier
	for rows.Next() {
		var m models.MaterialModifier
		if err := rows.Scan(
			&m.ID, &m.Name, &m.Description,
			&m.CreatedAt, &m.UpdatedAt,
		); err != nil {
			return nil, err
		}
		modifiers = append(modifiers, m)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	if modifiers == nil {
		modifiers = []models.MaterialModifier{}
	}
	return modifiers, nil
}