Implement listing of collections

bin/paramcli

@@ -1,6 +1,8 @@
 #!/usr/bin/env php
 <?php
 
+use PhpParser\Node\Expr\List_;
+
 require_once __DIR__."/../vendor/autoload.php";
 
 $opts = (object)[
@@ -59,6 +61,7 @@ function print_help() {
     printf("  -u,--until DATETIME   Set the validity end timestamp\n");
     printf("  -j,--json             Assume json encoded values with set\n");
     printf("\nActions:\n");
+    printf("  list\n    List collections\n");
     printf("  set {collection} {key}={value}*\n    Set the keys to value, using the --from and --until values. Multiple\n    key-value pairs can be specified. Use --json to pass values as json.\n");
     printf("  get {collection} [{when}]\n    Fetch the current values, or the values at {when}.\n");
     printf("  show {collection}\n    Show keys and all values, allowing to delete values.\n");
@@ -90,6 +93,18 @@ function http_post(string $url, array $headers, ?string $body = null) {
     return $http->post("http://{$opts->server}/{$url}", $headers, $body??'');
 }
 
+function action_list(object $opts) {
+    http_get("", [])->then(
+        function ($response) {
+            echo join("\n", json_decode($response->getBody()->getContents(),true))."\n";
+        },
+        function ($error) {
+            echo $error->getMessage()."\n";
+        }
+    );
+
+}
+
 function action_get(object $opts) {
     $collection = array_shift($opts->args);
     if (!$collection) {
@@ -179,9 +194,13 @@ function action_set(object $opts) {
         }
         
         if ($opts->from || $opts->until) {
-            $vfrom = $opts->from ? [ 'from' => $opts->from->format('Y-m-d H:i:s P') ] : null;
-            $vuntil = $opts->until ? [ 'until' => $opts->until->format('Y-m-d H:i:s P') ] : null;
-            $op['validity'] = [ ...$vfrom, ...$vuntil ];
+            $op['validity'] = [];
+            if ($opts->from) {
+                $op['validity']['from'] = $opts->from->format('Y-m-d H:i:s P');
+            }
+            if ($opts->until) {
+                $op['validity']['until'] = $opts->until->format('Y-m-d H:i:s P');
+            }
         }
         $body[$key] = $op;
     }
@@ -199,6 +218,10 @@ $action = array_shift($opts->args);
 
 switch ($action) {
 
+    case 'list':
+        action_list($opts);
+        break;
+
     case 'get':
         action_get($opts);
         break;

src/Daemon.php

@@ -72,6 +72,12 @@ class Daemon
         $collectionName = array_shift($paths);
         $collectionOp = array_shift($paths);
 
+        if ($collectionName == null) {
+            $collections = $this->db->getCollectionNames();
+            return Response::json($collections);
+        }
+
+
         switch ($collectionOp) {
 
             case null:

src/Storage/Database.php

@@ -72,6 +72,14 @@ class Database
 
         return new Collection($this->pdo, $id);
     }
+    public function getCollectionNames(): array
+    {
+        $query = $this->pdo->prepare("SELECT * FROM collections ORDER BY name ASC");
+        $query->execute();
+        $rows = $query->fetchAll(PDO::FETCH_ASSOC);
+
+        return array_column($rows, "name");
+    }
 
     public function createCollection(string $name, array $meta = []): Collection
     {