From 2c03461fd9f93d96bc2f0a9330c58815184cb1e5 Mon Sep 17 00:00:00 2001
From: Calvin Morrison <calvin@pobox.com>
Date: Mon, 20 Mar 2023 09:39:13 -0400
Subject: migrate

---
 migrate.php | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 migrate.php

diff --git a/migrate.php b/migrate.php
new file mode 100644
index 0000000..3120a75
--- /dev/null
+++ b/migrate.php
@@ -0,0 +1,52 @@
+<?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");
+  }
+}
-- 
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