<?php

namespace Appwrite\Migration\Version;

use Appwrite\Migration\Migration;
use Utopia\Config\Config;
use Utopia\CLI\Console;
use Appwrite\Database\Database;
use Appwrite\Database\Document;

class V05 extends Migration
{
    public function execute(): void
    {
        $db = $this->db;
        $project = $this->project;
        Console::log('Migrating project: ' . $project->getAttribute('name') . ' (' . $project->getId() . ')');

        // Update all documents $uid -> $id

        $this->forEachDocument([$this, 'fixDocument']);

        $schema = $_SERVER['_APP_DB_SCHEMA'] ?? '';

        try {
            $statement = $db->prepare("

            CREATE TABLE IF NOT EXISTS `template.database.unique` (
                `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
                `key` varchar(128) DEFAULT NULL,
                PRIMARY KEY (`id`),
                UNIQUE KEY `index1` (`key`)
            ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

            CREATE TABLE IF NOT EXISTS `{$schema}`.`app_{$project->getId()}.database.unique` LIKE `template.database.unique`;
            ALTER TABLE `{$schema}`.`app_{$project->getId()}.audit.audit` DROP COLUMN IF EXISTS `userType`;
            ALTER TABLE `{$schema}`.`app_{$project->getId()}.audit.audit` DROP INDEX IF EXISTS `index_1`;
            ALTER TABLE `{$schema}`.`app_{$project->getId()}.audit.audit` ADD INDEX IF NOT EXISTS `index_1` (`userId` ASC);
        ");

            $statement->closeCursor();

            $statement->execute();
        } catch (\Exception $e) {
            Console::error('Failed to alter table for project: ' . $project->getId() . ' with message: ' . $e->getMessage() . '/');
        }
    }

    protected function fixDocument(Document $document)
    {
        $providers = Config::getParam('providers');

        switch ($document->getAttribute('$collection')) {
            case Database::SYSTEM_COLLECTION_PROJECTS:
                foreach ($providers as $key => $provider) {
                    if (!empty($document->getAttribute('usersOauth' . \ucfirst($key) . 'Appid'))) {
                        $document
                            ->setAttribute('usersOauth2' . \ucfirst($key) . 'Appid', $document->getAttribute('usersOauth' . \ucfirst($key) . 'Appid', ''))
                            ->removeAttribute('usersOauth' . \ucfirst($key) . 'Appid');
                    }

                    if (!empty($document->getAttribute('usersOauth' . \ucfirst($key) . 'Secret'))) {
                        $document
                            ->setAttribute('usersOauth2' . \ucfirst($key) . 'Secret', $document->getAttribute('usersOauth' . \ucfirst($key) . 'Secret', ''))
                            ->removeAttribute('usersOauth' . \ucfirst($key) . 'Secret');
                    }
                }
                $document->setAttribute('security', $document->getAttribute('security') ? true : false);
                break;

            case Database::SYSTEM_COLLECTION_TASKS:
                $document->setAttribute('security', $document->getAttribute('security') ? true : false);
                break;

            case Database::SYSTEM_COLLECTION_USERS:
                foreach ($providers as $key => $provider) {
                    if (!empty($document->getAttribute('oauth' . \ucfirst($key)))) {
                        $document
                            ->setAttribute('oauth2' . \ucfirst($key), $document->getAttribute('oauth' . \ucfirst($key), ''))
                            ->removeAttribute('oauth' . \ucfirst($key));
                    }

                    if (!empty($document->getAttribute('oauth' . \ucfirst($key) . 'AccessToken'))) {
                        $document
                            ->setAttribute('oauth2' . \ucfirst($key) . 'AccessToken', $document->getAttribute('oauth' . \ucfirst($key) . 'AccessToken', ''))
                            ->removeAttribute('oauth' . \ucfirst($key) . 'AccessToken');
                    }
                }

                if ($document->getAttribute('confirm', null) !== null) {
                    $document
                        ->setAttribute('emailVerification', $document->getAttribute('confirm', $document->getAttribute('emailVerification', false)))
                        ->removeAttribute('confirm');
                }
                break;

            case Database::SYSTEM_COLLECTION_PLATFORMS:
                if ($document->getAttribute('url', null) !== null) {
                    $document
                        ->setAttribute('hostname', \parse_url($document->getAttribute('url', $document->getAttribute('hostname', '')), PHP_URL_HOST))
                        ->removeAttribute('url');
                }
                break;
        }

        $document
            ->setAttribute('$id', $document->getAttribute('$uid', $document->getAttribute('$id')))
            ->removeAttribute('$uid');

        foreach ($document as &$attr) { // Handle child documents
            if ($attr instanceof Document) {
                $attr = $this->fixDocument($attr);
            }

            if (\is_array($attr)) {
                foreach ($attr as &$child) {
                    if ($child instanceof Document) {
                        $child = $this->fixDocument($child);
                    }
                }
            }
        }

        return $document;
    }
}