<?php


// get my current version.
// this needs to come from the DB


// group all ver
$versions = [];
$line = fgets(STDIN);

if(!preg_match("/^# Versioned Migration Script$/", $line)) {
  die("Sorry, this doesn't look like a versioned file.\n");
}

// find current version.


// find max version

$current_version = 1;

$v = "0";
while($line = fgets(STDIN)) {
    $line = trim($line);
    if(preg_match("/^# Version ([0-9])+/", $line, $matches)) {
      $v  = $matches[1];
      if(array_key_exists($v, $versions)) {
        die("Version $v already exists, you cannot have two of the same version\n");
      }
      $versions[$v] = [];
    } else {
      $versions[$v][] = $line;
    }
  }
print_r($versions);
$max = max(array_keys($versions));
print("Current version: $current_version\n");
print_r("Max version : $max\n");
if($current_version == $max) {
  die("You're up to date on version $current_version");
}

if($current_version > $max) {
  die("You have a new version than provided by the sql file");
}

foreach($versions as $version => $rows) {
  if($version > $current_version) {
    print("I should run $version\n");
  }
}