JSON for missing OTAs from older versions.

json_otaversions.php

@@ -0,0 +1,71 @@
+<?php
+
+require_once __DIR__ . '/lib/autoloader.php';
+
+use \TclUpdates\SQLiteReader;
+
+$db = new SQLiteReader();
+
+$refs = $db->getAllRefs();
+$vars = $db->getAllVariantsFlat();
+
+$output = array();
+foreach ($refs as $ref) {
+    $updates = $db->getAllUpdates($ref);
+
+    $all_versions = array();
+    $update_map = array();
+    $latest_ota = '';
+    foreach ($updates as $update) {
+        $fv = $update['fv'];
+        $tv = $update['tv'];
+        $all_versions[] = $tv;
+        if (!$fv) {
+            // FULL Update - ignore, just collect possible old version
+            continue;
+        }
+        $all_versions[] = $fv;
+        if ($tv > $latest_ota) {
+            $latest_ota = $tv;
+        }
+        if (!isset($update_map[$tv])) {
+            $update_map[$tv] = array();
+        }
+        $update_map[$tv][] = $fv;
+    }
+
+    if ($latest_ota === '') {
+        // Not a single OTA found
+        continue;
+    }
+
+    $all_versions = array_unique($all_versions);
+    $all_versions = array_filter($all_versions, function($e) {
+        global $latest_ota;
+        return ($e < $latest_ota);
+    });
+
+    $missing_froms = array_diff($all_versions, array($latest_ota), $update_map[$latest_ota]);
+    rsort($missing_froms);
+
+    if (count($missing_froms) > 0) {
+        $output[$ref] = array(
+            'curef' => $ref,
+            'variant' => $vars[$ref],
+            'num_missing' => count($missing_froms),
+            'missing_froms' => $missing_froms,
+            'latest_ota' => $latest_ota,
+        );
+    }
+}
+
+header('Content-Type: text/json');
+
+$output = json_encode($output, JSON_PRETTY_PRINT);
+if (strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== false) {
+    ini_set('zlib.output_compression', 'Off');
+    header('Content-Encoding: gzip');
+    $output = gzencode($output);
+}
+
+echo $output;