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

    public function query()
    {
        return DB::table('product_demands as pd')
            ->join('products', 'pd.product_id', '=', 'products.id')
            ->leftJoin('option_values', 'pd.value_id', '=', 'option_values.id')
            ->groupBy('pd.product_id', 'pd.value_id', 'products.name', 'option_values.name')
            ->selectRaw('products.name as name,
                                   option_values.name as option_name,
                                   COUNT(pd.product_id) as number');
    }

    /**
     * Optional method if you want to use html builder.
     *
     * @return \Yajra\DataTables\Html\Builder
     */
    public function html()
    {
        return $this->builder()
            ->setTableId('product-demands-table')
            ->columns($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('name')->name('products.name')->title('نام محصول'),
            Column::make('option_name')->name('option_values.name')->title('گزینه'),
            Column::make('number')->title('تعداد')->searchable(false),
        ];
    }

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