Arsse/lib/Db/DriverSQLite3.php

<?php
declare(strict_types=1);
namespace JKingWeb\NewsSync\Db;

class DriverSQLite3 implements Driver {
    use Common, CommonSQLite3 {
        CommonSQLite3::schemaVersion insteadof Common;
    }
    
    protected $db;
    protected $data;
    
    private function __construct(\JKingWeb\NewsSync\RuntimeData $data, bool $install = false) {
        $this->data = $data;
        $file = $data->conf->dbSQLite3File;
        // if the file exists (or we're initializing the database), try to open it and set initial options
        try {
            $this->db = new \SQLite3($file, ($install) ? \SQLITE3_OPEN_READWRITE | \SQLITE3_OPEN_CREATE : \SQLITE3_OPEN_READWRITE, $data->conf->dbSQLite3Key);
            $this->db->enableExceptions(true);
            $this->exec("PRAGMA journal_mode = wal");
            $this->exec("PRAGMA foreign_keys = yes");
        } catch(\Throwable $e) {
            // if opening the database doesn't work, check various pre-conditions to find out what the problem might be
            if(!file_exists($file)) {
                if($install && !is_writable(dirname($file))) throw new Exception("fileUncreatable", dirname($file));
                throw new Exception("fileMissing", $file);
            }
            if(!is_readable($file) && !is_writable($file)) throw new Exception("fileUnusable", $file);
            if(!is_readable($file)) throw new Exception("fileUnreadable", $file);
            if(!is_writable($file)) throw new Exception("fileUnwritable", $file);
            // otherwise the database is probably corrupt
            throw new Exception("fileCorrupt", $mainfile);
        }
    }

    public function __destruct() {
        $this->db->close();
        unset($this->db);
    }

    static public function create(\JKingWeb\NewsSync\RuntimeData $data, bool $install = false): Driver {
        // check to make sure required extensions are loaded
        if(class_exists("SQLite3")) {
            return new self($data, $install);
        } else if(class_exists("PDO") && in_array("sqlite",\PDO::getAvailableDrivers())) {
            return new DriverSQLite3PDO($data, $install);
        } else {
            throw new Exception("extMissing", self::driverName());
        }
    }

    public function query(string $query): Result {
        return new ResultSQLite3($this->db->query($query), $this->db->changes());
    }

    public function prepareArray(string $query, array $paramTypes): Statement {
        return new StatementSQLite3($this->db, $this->db->prepare($query), $paramTypes);
    }
}