<?php
declare(strict_types=1);
/**
* This script sets prevhash of the genesis block to be NULL instead
* of empty string, then adds the foreign key / unique constraints
* (if the database driver allows it).
*/
use ParagonIE\EasyDB\{
EasyDB,
Factory
};
$root = \dirname(__DIR__);
/** @psalm-suppress UnresolvableInclude */
require_once $root . '/cli-autoload.php';
if (!\is_readable($root . '/local/settings.json')) {
echo 'Settings are not loaded.', PHP_EOL;
exit(1);
}
/** @var array<string, string> $settings */
$settings = \json_decode(
(string) \file_get_contents($root . '/local/settings.json'),
true
);
$db = Factory::create(
$settings['database']['dsn'],
$settings['database']['username'] ?? '',
$settings['database']['password'] ?? '',
$settings['database']['options'] ?? []
);
$db->update(
'chronicle_chain',
['prevhash' => null],
['prevhash' => '']
);
$db->update(
'chronicle_replication_chain',
['prevhash' => null],
['prevhash' => '']
);
if ($db->getDriver() !== 'sqlite') {
$db->exec(
"ALTER TABLE chronicle_chain
ADD CONSTRAINT chronicle_chain_prevhash_currhash_fk
FOREIGN KEY (prevhash)
REFERENCES chronicle_chain(currhash)
ON DELETE RESTRICT;"
);
$db->exec(
"ALTER TABLE chronicle_chain
ADD CONSTRAINT chronicle_chain_prevhash_unique
UNIQUE (prevhash)
ON DELETE RESTRICT;"
);
$db->exec(
"ALTER TABLE chronicle_replication_chain
ADD CONSTRAINT chronicle_replication_chain_prevhash_currhash_fk
FOREIGN KEY (prevhash)
REFERENCES chronicle_replication_chain(currhash)
ON DELETE RESTRICT;"
);
$db->exec(
"ALTER TABLE chronicle_replication_chain
ADD CONSTRAINT chronicle_replication_chain_prevhash_unique
UNIQUE (source, prevhash)
ON DELETE RESTRICT;"
);
}
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