| 1 |
<?php |
| 2 |
|
| 3 |
namespace Boxzilla\Admin; |
| 4 |
|
| 5 |
use Exception; |
| 6 |
|
| 7 |
/** |
| 8 |
* |
| 9 |
*/ |
| 10 |
class Migrations { |
| 11 |
|
| 12 |
|
| 13 |
/** |
| 14 |
* @var float |
| 15 |
*/ |
| 16 |
protected $version_from = 0; |
| 17 |
|
| 18 |
/** |
| 19 |
* @var float |
| 20 |
*/ |
| 21 |
protected $version_to = 0; |
| 22 |
|
| 23 |
/** |
| 24 |
* @var string |
| 25 |
*/ |
| 26 |
protected $migrations_dir = ''; |
| 27 |
|
| 28 |
/** |
| 29 |
* @param float $from |
| 30 |
* @param float $to |
| 31 |
* @param string $migrations_dir |
| 32 |
*/ |
| 33 |
public function __construct( $from, $to, $migrations_dir ) { |
| 34 |
$this->version_from = $from; |
| 35 |
$this->version_to = $to; |
| 36 |
$this->migrations_dir = $migrations_dir; |
| 37 |
} |
| 38 |
|
| 39 |
/** |
| 40 |
* Run the various upgrade routines, all the way up to the latest version |
| 41 |
*/ |
| 42 |
public function run() { |
| 43 |
$migrations = $this->find_migrations(); |
| 44 |
// run in sub-function for scope |
| 45 |
array_map( array( $this, 'run_migration' ), $migrations ); |
| 46 |
} |
| 47 |
|
| 48 |
/** |
| 49 |
* @return array |
| 50 |
*/ |
| 51 |
public function find_migrations() { |
| 52 |
$files = glob( rtrim( $this->migrations_dir, '/' ) . '/*.php' ); |
| 53 |
$migrations = array(); |
| 54 |
|
| 55 |
// return empty array when glob returns non-array value. |
| 56 |
if ( ! is_array( $files ) ) { |
| 57 |
return $migrations; |
| 58 |
} |
| 59 |
|
| 60 |
foreach ( $files as $file ) { |
| 61 |
$migration = basename( $file ); |
| 62 |
$parts = explode( '-', $migration ); |
| 63 |
$version = $parts[0]; |
| 64 |
|
| 65 |
// check if migration file is not for an even higher version |
| 66 |
if ( version_compare( $version, $this->version_to, '>' ) ) { |
| 67 |
continue; |
| 68 |
} |
| 69 |
|
| 70 |
// check if we ran migration file before. |
| 71 |
if ( version_compare( $this->version_from, $version, '>=' ) ) { |
| 72 |
continue; |
| 73 |
} |
| 74 |
|
| 75 |
// schedule migration file for running |
| 76 |
$migrations[] = $file; |
| 77 |
} |
| 78 |
|
| 79 |
return $migrations; |
| 80 |
} |
| 81 |
|
| 82 |
/** |
| 83 |
* Include a migration file and runs it. |
| 84 |
* |
| 85 |
* @param string $file |
| 86 |
* |
| 87 |
* @throws Exception |
| 88 |
*/ |
| 89 |
protected function run_migration( $file ) { |
| 90 |
if ( ! file_exists( $file ) ) { |
| 91 |
throw new Exception( "Migration file $file does not exist." ); |
| 92 |
} |
| 93 |
|
| 94 |
include $file; |
| 95 |
} |
| 96 |
} |
| 97 |
|
