package service

import (
	"context"
	"errors"

	"financeiro-carvalho/internal/model"
	"financeiro-carvalho/internal/repository"
)

var ErrInvalidSavingsGoal = errors.New("savings_goal_pct must be between 1 and 100")

type SettingsService struct {
	repo repository.SettingsRepository
}

func NewSettingsService(repo repository.SettingsRepository) *SettingsService {
	return &SettingsService{repo: repo}
}

func (s *SettingsService) Get(ctx context.Context) (*model.UserSettings, error) {
	return s.repo.Get(ctx)
}

func (s *SettingsService) Update(ctx context.Context, in model.UserSettings) (*model.UserSettings, error) {
	if in.SavingsGoalPct < 1 || in.SavingsGoalPct > 100 {
		return nil, ErrInvalidSavingsGoal
	}
	return s.repo.Upsert(ctx, in)
}