<?php

namespace App\DataTables;

use Illuminate\Support\Facades\DB;
use Yajra\DataTables\Html\Button;
use Yajra\DataTables\Html\Column;
use Yajra\DataTables\Services\DataTable;

class ReportProductsDataTable extends DataTable
{
    /**
     * Build DataTable class.
     *
     * @param  mixed  $query  Results from query() method.
     * @return \Yajra\DataTables\DataTableAbstract
     */
    public function dataTable($query)
    {
        return datatables()
            ->query($query)
            ->editColumn('price', function ($query) {
                return to_persian_numbers(number_format($query->price));
            })
            ->editColumn('discount', function ($query) {
                return to_persian_numbers(number_format($query->discount));
            })
            ->editColumn('quantity', function ($query) {
                return to_persian_numbers($query->quantity);
            })
            ->addIndexColumn();
    }

    public function query()
    {
        $status = $this->request()->get('status');
        $from = $this->request()->get('from');
        $until = $this->request()->get('until');

        return DB::table('products')
            ->join('order_product as op', 'products.id', '=', 'op.product_id')
            ->join('orders', 'op.order_id', '=', 'orders.id')
            ->when(! is_null($status), function ($query) use ($status) {
                return $query->whereIn('orders.status', $status);
            })->when($from, function ($query) use ($from) {
                return $query->whereDate('orders.created_at', '>=', $from);
            })->when($until, function ($query) use ($until) {
                return $query->whereDate('orders.created_at', '<=', $until);
            })->groupBy('products.id')
            ->selectRaw('products.code as code,
                                   products.name as name,
                                   sum(op.quantity) as quantity,
                                   sum(op.price * op.quantity) as price,
                                   sum(op.discount * op.quantity) as discount');
    }

    /**
     * Optional method if you want to use html builder.
     *
     * @return \Yajra\DataTables\Html\Builder
     */
    public function html()
    {
        return $this->builder()
            ->setTableId('report-products-table')
            ->columns($this->getColumns())
            ->minifiedAjax()
            ->dom('Bfrtip')
            ->orderBy(3)
            ->language(asset('vendor/datatables/Persian.json'))
            ->buttons(
                Button::make('excel'),
                Button::make('print'),
                Button::make('reset'),
                Button::make('reload')
            );
    }

    /**
     * Get columns.
     *
     * @return array
     */
    protected function getColumns()
    {
        return [
            Column::make('DT_RowIndex')
                ->title('#')
                ->orderable(false)
                ->searchable(false),
            Column::make('code')->title('کد'),
            Column::make('name')->title('نام'),
            Column::make('quantity')->title('تعداد')->searchable(false),
            Column::make('price')->title('قیمت')->searchable(false),
            Column::make('discount')->title('تخفیف')->searchable(false),
        ];
    }

    /**
     * Get filename for export.
     *
     * @return string
     */
    protected function filename()
    {
        return 'ReportProducts_'.date('YmdHis');
    }
}