<?php

// (c) Copyright by authors of the Tiki Wiki CMS Groupware Project
//
// All Rights Reserved. See copyright.txt for details and a complete list of authors.
// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
// $Id$

function prefs_ocr_list()
{
    $langLib = TikiLib::lib('language');
    $ocr = TikiLib::lib('ocr');

    $ocrLangs = $langLib->findLanguageNames($ocr->getTesseractLangs());
    // Place the default (OSD) at the top
    unset($ocrLangs['osd']);
    $ocrLangs = $langLib->findLanguageNames(['osd']) + $ocrLangs;

    try {
        $tesseractPath = $ocr->whereIsExecutable('tesseract') ?: 'tesseract';
        $pdfimagesPath = $ocr->whereIsExecutable('pdfimages') ?: 'pdfimages';
    } catch (Exception $e) {
        $tesseractPath = 'tesseract';
        $pdfimagesPath = 'pdfimages';
    }

    return [
        'ocr_enable' => [
            'name' => tra('OCR Files'),
            'type' => 'flag',
            'default' => 'n',
            'description' => tra('Extract and index text from supported file types.'),
            'keywords' => 'ocr optical character recognition',
            'dependencies' => ['feature_file_galleries'],
            'packages_required' => ['thiagoalessio/tesseract_ocr' => 'thiagoalessio\TesseractOCR\TesseractOCR',
                                    'media-alchemyst/media-alchemyst' => 'MediaAlchemyst\Alchemyst'],
        ],
        'ocr_every_file' => [
            'name' => tra('OCR Every File'),
            'type' => 'flag',
            'description' => tra('Attempt to OCR every supported file.'),
            'default' => 'n',
        ],
        'ocr_file_level' => [
            'name' => tra('Allow file level OCR languages'),
            'type' => 'flag',
            'description' => tra('Allow users to change the default languages that will be used to OCR a file.'),
            'default' => 'y',
        ],
        'ocr_limit_languages' => [
            'name' => tra('OCR limit languages'),
            'description' => tra('Limit the number of languages one can select from this list.'),
            'filter' => 'text',
            'type' => 'multilist',
            'options' => $ocrLangs,
            'dependencies' => ['ocr_file_level'],
            'default' => [''],
        ],
        'ocr_tesseract_path' => [
            'name' => tra('tesseract path'),
            'description' => tra('Path to the location of the binary. Defaults to the $PATH location.'),
            'hint' => 'If blank, the $PATH will be used, but will likely fail with scheduler.',
            'type' => 'text',
            'size' => '256',
            'filter' => 'text',
            'default' => $tesseractPath,
        ],
        'ocr_pdfimages_path' => [
            'name' => tra('pdfimages path'),
            'description' => tra('Path to the location of the binary. Defaults to the $PATH location.'),
            'hint' => 'If blank, the $PATH will be used, but will likely fail with scheduler.',
            'type' => 'text',
            'size' => '256',
            'filter' => 'text',
            'default' => $pdfimagesPath,
        ],
    ];
}