import { supabase } from '@/lib/supabase';
import { isSyncEnabled } from './syncSettings';

/**
 * Upload budget data from local storage to Supabase
 */
export const uploadBudgets = async (userId: string): Promise<void> => {
  if (!isSyncEnabled()) return;

  try {
    const budgetData = localStorage.getItem('budgetData');
    const categoryBudgets = localStorage.getItem('categoryBudgets');
    
    if (budgetData) {
      const parsedBudgetData = JSON.parse(budgetData);
      
      // 기존 예산 데이터 삭제
      await supabase
        .from('budgets')
        .delete()
        .eq('user_id', userId);
      
      // 새 예산 데이터 삽입
      const { error } = await supabase.from('budgets').insert({
        user_id: userId,
        daily_target: parsedBudgetData.daily.targetAmount,
        weekly_target: parsedBudgetData.weekly.targetAmount,
        monthly_target: parsedBudgetData.monthly.targetAmount
      });
      
      if (error) throw error;
    }
    
    if (categoryBudgets) {
      const parsedCategoryBudgets = JSON.parse(categoryBudgets);
      
      // 기존 카테고리 예산 삭제
      await supabase
        .from('category_budgets')
        .delete()
        .eq('user_id', userId);
      
      // 카테고리별 예산 데이터 변환 및 삽입
      const categoryEntries = Object.entries(parsedCategoryBudgets).map(
        ([category, amount]) => ({
          user_id: userId,
          category,
          amount
        })
      );
      
      const { error } = await supabase
        .from('category_budgets')
        .insert(categoryEntries);
        
      if (error) throw error;
    }
    
    console.log('예산 데이터 업로드 완료');
  } catch (error) {
    console.error('예산 데이터 업로드 실패:', error);
  }
};

/**
 * Download budget data from Supabase to local storage
 */
export const downloadBudgets = async (userId: string): Promise<void> => {
  if (!isSyncEnabled()) return;

  try {
    // 예산 데이터 가져오기
    const { data: budgetData, error: budgetError } = await supabase
      .from('budgets')
      .select('*')
      .eq('user_id', userId)
      .single();
      
    if (budgetError && budgetError.code !== 'PGRST116') throw budgetError;
    
    // 카테고리 예산 가져오기
    const { data: categoryData, error: categoryError } = await supabase
      .from('category_budgets')
      .select('*')
      .eq('user_id', userId);
      
    if (categoryError) throw categoryError;
    
    if (budgetData) {
      // 예산 데이터 로컬 형식으로 변환
      const localBudgetData = {
        daily: {
          targetAmount: budgetData.daily_target,
          spentAmount: 0, // 지출액은 로컬에서 계산
          remainingAmount: budgetData.daily_target
        },
        weekly: {
          targetAmount: budgetData.weekly_target,
          spentAmount: 0,
          remainingAmount: budgetData.weekly_target
        },
        monthly: {
          targetAmount: budgetData.monthly_target,
          spentAmount: 0,
          remainingAmount: budgetData.monthly_target
        }
      };
      
      localStorage.setItem('budgetData', JSON.stringify(localBudgetData));
    }
    
    if (categoryData && categoryData.length > 0) {
      // 카테고리 예산 로컬 형식으로 변환
      const localCategoryBudgets = categoryData.reduce((acc, curr) => {
        acc[curr.category] = curr.amount;
        return acc;
      }, {} as Record<string, number>);
      
      localStorage.setItem('categoryBudgets', JSON.stringify(localCategoryBudgets));
    }
    
    console.log('예산 데이터 다운로드 완료');
  } catch (error) {
    console.error('예산 데이터 다운로드 실패:', error);
  }
};