<?php

namespace App\Http\Controllers;

use App\Models\DailySale;
use App\Models\Month;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Log;

class CalendarController extends Controller
{
    /**
     * Mostrar calendario interactivo
     */
    public function index(Request $request)
    {
        $user = Auth::user();
        
        $year = $request->get('year', now()->year);
        $monthName = $request->get('month');
        
        // Obtener meses del usuario
        $months = $user->months()
            ->where('year', $year)
            ->get()
            ->keyBy('name');

        // Si se especifica mes, mostrar ese mes
        if ($monthName) {
            $currentMonth = $months->get($monthName);
        } else {
            // Si no, buscar mes abierto o el último del año
            $currentMonth = $user->months()
                ->where('year', $year)
                ->orderByRaw("FIELD(name, 'Enero', 'Febrero', 'Marzo', 'Abril', 'Mayo', 'Junio', 'Julio', 'Agosto', 'Septiembre', 'Octubre', 'Noviembre', 'Diciembre')")
                ->first();
        }

        // Obtener ventas diarias del mes actual
        $dailySales = [];
        if ($currentMonth) {
            $sales = $currentMonth->dailySales()->get()->keyBy('date');
            foreach ($sales as $sale) {
                $dailySales[$sale->date->format('Y-m-d')] = $sale;
            }
        }

        // Obtener gastos del mes
        $expenses = [];
        if ($currentMonth) {
            $expenseList = $currentMonth->expenses()->get();
            foreach ($expenseList as $expense) {
                $expenses[$expense->date->format('Y-m-d')] = $expense;
            }
        }

        return view('calendar.index', compact('year', 'months', 'currentMonth', 'dailySales', 'expenses'));
    }

    /**
     * Obtener datos de un día específico (para AJAX)
     */
    public function day(Request $request)
    {
        $user = Auth::user();
        $date = $request->get('date');
        
        if (!$date) {
            return response()->json(['error' => 'Fecha requerida'], 400);
        }

        // Buscar venta del día
        $sale = DailySale::whereHas('month', function ($query) use ($user) {
                $query->where('user_id', $user->id);
            })
            ->where('date', $date)
            ->first();

        // Buscar gastos del día
        $expenses = $user->expenses()
            ->where('date', $date)
            ->get();

        return response()->json([
            'date' => $date,
            'sale' => $sale,
            'expenses' => $expenses,
        ]);
    }

    /**
     * Guardar venta y gasto del día (para AJAX)
     */
    public function storeDay(Request $request)
    {
        $user = Auth::user();
        
        $data = $request->all();
        
        $monthId = $request->input('month_id');
        $date = $request->input('date');
        $userSales = floatval($request->input('user_sales', 0));
        $systemSales = floatval($request->input('system_sales', 0));
        $expenseAmount = floatval($request->input('expense_amount', 0));
        
        if (!$monthId || !$date) {
            return response()->json(['success' => false, 'message' => 'Faltan datos requeridos']);
        }
        
        $month = Month::where('id', $monthId)
            ->where('user_id', $user->id)
            ->first();

        if (!$month) {
            return response()->json(['success' => false, 'message' => 'Mes no encontrado']);
        }
        
        // Guardar o actualizar venta solo si hay datos
        if ($userSales > 0) {
            DailySale::updateOrCreate(
                [
                    'month_id' => $month->id,
                    'date' => $date,
                ],
                [
                    'user_id' => $user->id,
                    'user_sales' => $userSales,
                    'system_sales' => $systemSales,
                ]
            );
        }

        // Guardar o actualizar gasto si hay monto
        $expenseType = $request->input('expense_type', 'q1');
        
        if ($expenseAmount > 0) {
            \App\Models\Expense::updateOrCreate(
                [
                    'month_id' => $month->id,
                    'date' => $date,
                ],
                [
                    'user_id' => $user->id,
                    'description' => $request->input('expense_description', 'Gasto del día'),
                    'amount' => $expenseAmount,
                    'expense_type' => $expenseType,
                ]
            );
        }

        return response()->json(['success' => true, 'message' => 'Datos guardados correctamente']);
    }
}