<?php
/**
 * Created by Pensare Software.
 * User: Theo Weijmer
 * Date: 30/07/2018
 * Time: 10:48
 */

class MonthForecastSheet {

    const HEADERS = [
        'A' => 'project',
        'B' => 'klant',
        'C' => 'Nog te factureren incl. btw',
        'D' => 'januari',
        'E' => 'februari',
        'F' => 'maart',
        'G' => 'april',
        'H' => 'mei',
        'I' => 'juni',
        'J' => 'juli',
        'K' => 'augustus',
        'L' => 'september',
        'M' => 'oktober',
        'N' => 'november',
        'O' => 'december',
        'P' => 'Nog te factureren na lopend boekjaar inc. btw',
        'Q' => 'Nog te prognotiseren inc. btw'
    ];

    const MONTH_COLUMNS = ['D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O'];

    private $invoiceForecast;
    private $sheet;
    private $row;

    public function __construct( $invoiceForecast, $sheet )
    {
        $this->invoiceForecast = $invoiceForecast;
        $this->sheet = $sheet;

        $this->handle();
    }

    private function handle()
    {
        $this->setHeader();

        $this->setBody();

        $this->setTotals();
    }

    private function setHeader()
    {
        foreach ( self::HEADERS as $cell => $header )
        {
            $this->sheet->setCellValue( $cell . '1', $header );
            $this->sheet->getColumnDimension( $cell )->setAutoSize( TRUE );
        }
    }

    private function setBody()
    {
        $this->row = 2;
        foreach ( $this->invoiceForecast AS $project )
        {
            $this->sheet->setCellValue( 'A' . $this->row, $project['projectname'] );
            $this->sheet->setCellValue( 'B' . $this->row, $project['customer'] );
            $this->sheet->setCellValue( 'C' . $this->row, str_replace( '.', '', $project['needInvoice'] ?? '' ) );

            $columnCount = 0;
            foreach ( $project['forecastMonths'] as $month )
            {
                $column = self::MONTH_COLUMNS[ $columnCount ];
                $forecast = $month['forecastamount'];
                $this->sheet->setCellValue( $column . $this->row, $forecast );
                $columnCount ++;
            }

            $this->sheet->setCellValue( 'P' . $this->row, str_replace( '.', '', $project['forecastOtherYears'] ?? '' ) );
            $this->sheet->setCellValue( 'Q' . $this->row, str_replace( '.', '', $project['forecastRemaining'] ?? '' ) );

            $this->row ++;
        }
    }

    private function setTotals()
    {
        $lastRow = $this->row - 1;
        $this->sheet->setCellValue( 'C' . $this->row, '=SUM(C2:C' . $lastRow . ')' );
        $this->sheet->setCellValue( 'D' . $this->row, '=SUM(D2:D' . $lastRow . ')' );
        foreach ( self::MONTH_COLUMNS as $column )
        {
            $this->sheet->setCellValue( $column . $this->row, '=SUM(' . $column . '2:' . $column . $lastRow . ')' );
        }
        $this->sheet->setCellValue( 'P' . $this->row, '=SUM(P2:P' . $lastRow . ')' );
        $this->sheet->setCellValue( 'Q' . $this->row, '=SUM(Q2:Q' . $lastRow . ')' );
    }

}