feat: implement harvest units repository

backend/internal/repository/postgres_harvest.go

@@ -0,0 +1,34 @@
+package repository
+
+import (
+	"context"
+
+	"github.com/forfarm/backend/internal/domain"
+)
+
+type postgresHarvestRepository struct {
+	conn Connection
+}
+
+func NewPostgresHarvest(conn Connection) domain.HarvestRepository {
+	return &postgresHarvestRepository{conn: conn}
+}
+
+func (p *postgresHarvestRepository) GetUnits(ctx context.Context) ([]domain.HarvestUnit, error) {
+	query := `SELECT id, name FROM harvest_units ORDER BY id`
+	rows, err := p.conn.Query(ctx, query)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var units []domain.HarvestUnit
+	for rows.Next() {
+		var u domain.HarvestUnit
+		if err := rows.Scan(&u.ID, &u.Name); err != nil {
+			return nil, err
+		}
+		units = append(units, u)
+	}
+	return units, nil
+}