<?php

namespace App\Ingest;

use PhpOffice\PhpWord\Element\TextRun;
use PhpOffice\PhpWord\IOFactory;
use PhpOffice\PhpWord\PhpWord;
use PhpOffice\PhpWord\Style;
use PhpOffice\PhpWord\Style\Font;

class DocxWriter
{
    protected $storage;
    protected $saveAtPath;
    protected $handler;

    public function __construct($storage, $saveAtPath)
    {
        $this->storage = $storage;
        $this->saveAtPath = $saveAtPath;
        $this->handler = new PhpWord();
    }

    public function execute(array $data)
    {
        $this->handler->setDefaultFontName($data['default_font_name']);
        $this->handler->setDefaultFontSize($data['default_font_size']);

        $this->setStyles($data['styles']);

        foreach ($data['elements'] as $section) {
            $this->handleSection($section);
        }

        $objWriter = IOFactory::createWriter($this->handler, 'Word2007');
        $objWriter->save($this->storage->path($this->saveAtPath));
    }

    protected function handleSection($element)
    {
        $section = $this->handler->addSection($element['style']);

        foreach ($element['headers'] as $header) {
            $this->handleHeader($header, $section);
        }

        foreach ($element['footers'] as $footer) {
            $this->handleFooter($footer, $section);
        }

        $this->addElementsToElement($section, $element['elements']);
    }

    protected function handleHeader($header, $section)
    {
        $headerElement = $section->addHeader($header['type']);

        $this->addElementsToElement($headerElement, $header['elements']);

        return $headerElement;
    }

    protected function handleFooter($footer, $section)
    {
        $footerElement = $section->addHeader($footer['type']);

        $this->addElementsToElement($footerElement, $footer['elements']);

        return $footerElement;
    }

    protected function addElementsToElement($parentElement, $elements)
    {
        foreach ($elements as $element) {
            $method = 'handle' . $element['element_type'];

            $this->$method($parentElement, $element);
        }
    }

    protected function handleImage($parentElement, array $element)
    {
        return;

        $parentElement->addImage(
            $element['source'],
            $element['style'],
            $element['is_watermark'],
            $element['name']
        );
    }

    protected function handleBookmark($parentElement, array $element)
    {
        $parentElement->addBookmark($element['name']);
    }

    protected function handleLine($parentElement, array $element)
    {
        $parentElement->addLine($element['style']);
    }

    protected function handleLink($parentElement, array $element)
    {

    }

    protected function handleListItem($parentElement, array $element)
    {
        $data = array_key_exists('text_object', $element) ? $element['text_object'] : $element;

        $parentElement->addListItem(
            $data['text'],
            $element['depth'],
            $data['font_style'],
            $element['style'],
            $data['paragraph_style']
        );
    }

    protected function handleListItemRun($parentElement, array $element)
    {
        $createdElement = $parentElement->addListItemRun(
            $element['depth'],
            $element['style'],
            $element['paragraph_style']
        );

        if ($createdElement) {
            $this->addElementsToElement($createdElement, $element['elements']);
        }
    }

    protected function handlePageBreak($parentElement, array $element)
    {
        $parentElement->addPageBreak();
    }

    protected function handlePreserveText($parentElement, array $element)
    {
        $parentElement->addPreserveText(
            $element['text'],
            $element['font_style'],
            $element['paragraph_style']
        );
    }

    protected function handleText($parentElement, array $element)
    {
        // @TODO Improve bold, italic, list items styles, other styles..

        $parentElement->addText(
            $element['text'],
            $element['font_style'],
            $element['paragraph_style']
        );
    }

    protected function handleTextBreak($parentElement, array $element)
    {
        $fontStyle = null;

        if ($fs = $element['font_style']) {
            $paragraphStyle = array_key_exists('Paragraph', $fs) ? $fs['Paragraph'] : null;

            $fontStyle = new Font($fs['StyleName'], $paragraphStyle);

            // Basic
            $fontStyle->setName($fs['Name']);
            $fontStyle->setSize($fs['Size']);
            $fontStyle->setColor($fs['Color']);
            $fontStyle->setHint($fs['Hint']);

            // Style
            $fontStyle->setBold($fs['Bold']);
            $fontStyle->setItalic($fs['Italic']);
            $fontStyle->setUnderline($fs['Underline']);
            $fontStyle->setStrikethrough($fs['Strikethrough']);
            $fontStyle->setDoubleStrikethrough($fs['DoubleStrikethrough']);
            $fontStyle->setSuperScript($fs['SuperScript']);
            $fontStyle->setSubScript($fs['SubScript']);
            $fontStyle->setSmallCaps($fs['SmallCaps']);
            $fontStyle->setAllCaps($fs['AllCaps']);
            $fontStyle->setFgColor($fs['FgColor']);
            $fontStyle->setHidden($fs['Hidden']);

            // Spacing
            $fontStyle->setScale($fs['Scale']);
            $fontStyle->setSpacing($fs['Spacing']);
            $fontStyle->setKerning($fs['Kerning']);
            $fontStyle->setPosition($fs['Position']);
        }

        $parentElement->addTextBreak(
            1,
            $fontStyle,
            $element['paragraph_style']
        );
    }

    protected function handleTextRun($parentElement, array $element)
    {
//        $createdElement = $parentElement->addTextRun($element['paragraph_style']);
        $createdElement = $parentElement->addTextRun();

        if ($createdElement) {
            $this->addElementsToElement($createdElement, $element['elements']);
        }
    }

    protected function handleTable($parentElement, array $element)
    {
        $table = $parentElement->addTable($element['style']);

        $table->setWidth($element['width']);

        foreach ($element['rows'] as $row) {
            $addedRow = $table->addRow($row['height'], $row['style']);

            foreach ($row['cells'] as $cell) {
                $addedCell = $addedRow->addCell($cell['width'], $cell['style']);

                if (count($cell['elements']) > 0) {
                    $this->addElementsToElement($addedCell, $cell['elements']);
                }
            }
        }
    }

    protected function handleTitle($parentElement, array $element)
    {
        if (is_array($element['text'])) {
            $textRun = new TextRun($element['text']['paragraph_style']);

            $this->addElementsToElement($textRun, $element['text']['elements']);

            $text = $textRun;
        } else {
            $text = $element['text'];
        }

        return $parentElement->addTitle($text, $element['depth']);
    }

    protected function setStyles($styles)
    {
        foreach ($styles as $name => $style) {
            if ($name == 'Title') {
                Style::addTitleStyle(null, $style, $style['Paragraph']);

                continue;
            }

            if (strpos($name, 'Heading_') !== false) {
                $name = str_replace('Heading_', '', $name);
                $depth = (int) $name;

                Style::addTitleStyle($depth, $style, $style['Paragraph']);

                continue;
            }

            if ($style['style'] === 'font') {
                $paragraphStyle = isset($style['Paragraph']) ? $style['Paragraph'] : null;

                Style::addFontStyle($name, $style, $paragraphStyle);
            }

            if ($style['style'] === 'paragraph') {
                Style::addParagraphStyle($name, $style);
            }

            if ($style['style'] === 'link') {
//                Style::addLinkStyle();
            }

            if ($style['style'] === 'numbering') {
//                $style['Levels'][0]['Format'] = 'decimal';
                Style::addNumberingStyle($name, $style);
            }

            if ($style['style'] === 'title') {
//                Style::addTitleStyle();
            }

            if ($style['style'] === 'table') {
//                Style::addTableStyle();
            }
        }
    }
}