<?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.
// $Id$

/**
 * @param $installer
 */
function pre_20110727_tracker_multilingual_convert_tiki($installer)
{
    global $multilingual_tracker_content;
    global $multilingual_tracker_content_logs;
    $fields = $installer->table('tiki_tracker_fields');

    $multilingualFields = $fields->fetchColumn(
        'fieldId',
        [
            'isMultilingual' => 'y',
            'type' => $fields->in(['t', 'a']),
        ]
    );

    $unilingualFields = $fields->fetchColumn(
        'fieldId',
        [
            'isMultilingual' => $fields->not('y'),
            'type' => $fields->in(['t', 'a']),
        ]
    );

    $table = $installer->table('tiki_tracker_item_fields');

    // Clean up data that does not match the field definition
    $table->deleteMultiple(
        [
            'fieldId' => $table->in($multilingualFields),
            'lang' => '',
        ]
    );

    $table->deleteMultiple(
        [
            'fieldId' => $table->in($unilingualFields),
            'lang' => $table->not(''),
        ]
    );

    // Collect the data stored in the multilingual fields
    $result = $table->fetchAll(
        $table->all(),
        [
            'lang' => $table->not(''),
            'fieldId' => $table->in($multilingualFields),
        ]
    );

    $multilingual_tracker_content = [];
    foreach ($result as $row) {
        $itemId = $row['itemId'];
        $fieldId = $row['fieldId'];
        $lang = $row['lang'];
        $value = $row['value'];

        $multilingual_tracker_content[$itemId][$fieldId][$lang] = $value;
    }

    // Remove all affected data
    foreach ($multilingual_tracker_content as $itemId => $fields) {
        foreach ($fields as $fieldId => $data) {
            $table->deleteMultiple(
                [
                    'itemId' => $itemId,
                    'fieldId' => $fieldId,
                ]
            );
        }
    }

    // Similar treatment on logs, although less corruption is expected
    $table = $installer->table('tiki_tracker_item_field_logs');
    $result = $table->fetchAll($table->all(), ['lang' => $table->not(''),]);
    $multilingual_tracker_content_logs = [];

    foreach ($result as $row) {
        $version = $row['version'];
        $itemId = $row['itemId'];
        $fieldId = $row['fieldId'];
        $lang = $row['lang'];
        $value = $row['value'];

        $multilingual_tracker_content_logs[$itemId][$version][$fieldId][$lang] = $value;
    }

    $table->deleteMultiple(['lang' => $table->not(''),]);
}

/**
 * @param $installer
 */
function post_20110727_tracker_multilingual_convert_tiki($installer)
{
    global $multilingual_tracker_content;
    global $multilingual_tracker_content_logs;

    // Insert back the data in a different format
    $table = $installer->table('tiki_tracker_item_fields');
    foreach ($multilingual_tracker_content as $itemId => $fields) {
        foreach ($fields as $fieldId => $data) {
            $table->insert(
                [
                    'itemId' => $itemId,
                    'fieldId' => $fieldId,
                    'value' => json_encode($data),
                ]
            );
        }
    }

    $table = $installer->table('tiki_tracker_item_field_logs');
    foreach ($multilingual_tracker_content_logs as $itemId => $versions) {
        foreach ($versions as $version => $fields) {
            foreach ($fields as $fieldId => $data) {
                $table->insert(
                    [
                        'version' => $version,
                        'itemId' => $itemId,
                        'fieldId' => $fieldId,
                        'value' => json_encode($data),
                    ]
                );
            }
        }
    }

    $multilingual_tracker_content = null;
    $multilingual_tracker_content_logs = null;
}