package postgres

import (
	"context"
	"database/sql"

	"git.javil.eu/jacob1123/budgeteer"
)

// Budget returns a budget for a given id.
func (s *Repository) Budget(id string) (*budgeteer.Budget, error) {
	b := &budgeteer.Budget{ID: id}
	err := s.DB.Select(&b)
	if err != nil {
		return nil, err
	}
	return b, nil
}

func (s *Repository) BudgetsForUser(id string) ([]Budget, error) {
	budgets, err := s.DB.GetBudgetsForUser(context.Background(), sql.NullString{id, true})
	if err != nil {
		return nil, err
	}
	return budgets, nil

}

func (s *Repository) NewBudget(name string, userID string) (Budget, error) {
	b := CreateBudgetParams{ID: s.IDGenerator.New(), Name: name}
	budget, err := s.DB.CreateBudget(context.Background(), b)
	if err != nil {
		return nil, err
	}

	ub := LinkBudgetToUserParams{UserID: userID, BudgetID: budget.ID}
	_, err = s.DB.LinkBudgetToUser(context.Background(), ub)
	if err != nil {
		return nil, err
	}

	return budget, nil
}