Add a basic import function to paramcli

bin/paramcli

@@ -67,6 +67,7 @@ function print_help() {
     printf("  show {collection}\n    Show keys and all values, allowing to delete values.\n");
     printf("  delete {collection} {key|id}*\n    Delete a key or a value from a collection\n");
     printf("  purge {collection}\n    Delete an entire collection\n");
+    printf("  import {collection} [filename]\n    Set values from JSON read from file (or stdin)\n");
 }
 
 function exit_error(string $msg, int $code=1): never {
@@ -214,6 +215,25 @@ function action_set(object $opts) {
     );
 }
 
+function action_import(object $opts): void {
+    $collection = array_shift($opts->args);
+    if (!$collection) {
+        exit_error("Missing collection. Expected: import {collection} [file]");
+    }
+    
+    $filename = array_shift($opts->args) ?? STDIN;
+    $data = json_decode(stream_get_contents($filename));
+
+    http_post($collection, [ 'content-type' => 'application/json' ], json_encode($data))->then(
+        function ($response) {
+            echo $response->getBody()->getContents();
+        },
+        function ($error) {
+            echo $error->getMessage()."\n";
+        }
+    );
+}
+
 $action = array_shift($opts->args);
 
 switch ($action) {
@@ -242,6 +262,10 @@ switch ($action) {
         action_purge($opts);
         break;
 
+    case 'import':
+        action_import($opts);
+        break;
+
     default:
         print_help();
         exit(0);