<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\DB;
use Modules\Expense\Entities\Expense;
use Modules\Product\Entities\Product;
use Modules\Purchase\Entities\Purchase;
use Modules\PurchasesReturn\Entities\PurchaseReturn;
use Modules\Sale\Entities\Sale;
use Modules\SalesReturn\Entities\SaleReturn;

class HomeController extends Controller
{

    public function index() {
        $sales = Sale::sum('total_amount');
        $sale_returns = SaleReturn::sum('total_amount');
        $purchase_returns = PurchaseReturn::sum('total_amount');
        $product_costs = 0;

        foreach (Sale::with('saleDetails')->get() as $sale) {
            foreach ($sale->saleDetails as $saleDetail) {
                $product_costs += $saleDetail->product->product_cost;
            }
        }

        $revenue = ($sales - $sale_returns) / 100;
        $profit = $revenue - $product_costs;

        return view('home', [
            'revenue'          => $revenue,
            'sale_returns'     => $sale_returns / 100,
            'purchase_returns' => $purchase_returns / 100,
            'profit'           => $profit
        ]);
    }


    public function currentMonthChart() {
        $currentMonthSales = Sale::whereMonth('date', date('m'))
                ->whereYear('date', date('Y'))
                ->sum('total_amount') / 100;
        $currentMonthPurchases = Purchase::whereMonth('date', date('m'))
                ->whereYear('date', date('Y'))
                ->sum('total_amount') / 100;
        $currentMonthExpenses = Expense::whereMonth('date', date('m'))
                ->whereYear('date', date('Y'))
                ->sum('amount') / 100;

        return response()->json([
            'sales' => $currentMonthSales,
            'purchases' => $currentMonthPurchases,
            'expenses' => $currentMonthExpenses
        ]);
    }


    public function salesPurchasesChart() {
        $sales = $this->salesChartData();
        $purchases = $this->purchasesChartData();

        return response()->json(['sales' => $sales, 'purchases' => $purchases]);
    }


    public function salesChartData() {
        // Build an array of the dates we want to show, the oldest first
        $dates = collect();
        foreach (range(-6, 0) as $i) {
            $date = Carbon::now()->addDays($i)->format('d-m-y');
            $dates->put($date, 0);
        }

        $date_range = Carbon::today()->subDays(6);
        // Get the sales counts
        $sales = Sale::where('date', '>=', $date_range)
            ->groupBy(DB::raw("DATE_FORMAT(date,'%d-%m-%y')"))
            ->orderBy('date', 'asc')
            ->get([
                DB::raw(DB::raw("DATE_FORMAT(date,'%d-%m-%y') as date")),
                DB::raw('SUM(total_amount) AS count'),
            ])
            ->pluck('count', 'date');

        // Merge the two collections;
        $dates = $dates->merge($sales);

        $data = [];
        $days = [];
        foreach ($dates as $key => $value) {
            $data[] = $value / 100;
            $days[] = $key;
        }

        return response()->json(['data' => $data, 'days' => $days]);
    }


    public function purchasesChartData() {
        // Build an array of the dates we want to show, the oldest first
        $dates = collect();
        foreach (range(-6, 0) as $i) {
            $date = Carbon::now()->addDays($i)->format('d-m-y');
            $dates->put($date, 0);
        }

        $date_range = Carbon::today()->subDays(6);

        // Get the purchases counts
        $purchases = Purchase::where('date', '>=', $date_range)
            ->groupBy(DB::raw("DATE_FORMAT(date,'%d-%m-%y')"))
            ->orderBy('date', 'asc')
            ->get([
                DB::raw(DB::raw("DATE_FORMAT(date,'%d-%m-%y') as date")),
                DB::raw('SUM(total_amount) AS count'),
            ])
            ->pluck('count', 'date');

        // Merge the two collections;
        $dates = $dates->merge($purchases);

        $data = [];
        $days = [];
        foreach ($dates as $key => $value) {
            $data[] = $value / 100;
            $days[] = $key;
        }

        return response()->json(['data' => $data, 'days' => $days]);

    }
}