From 28c1f9612c735f58d16d4c5d2a8f9df4c9a3bd64 Mon Sep 17 00:00:00 2001
From: Ian Gulliver <ian@flamingcow.tv>
Date: Wed, 3 Jun 2015 22:24:07 -0700
Subject: [PATCH] Actually send commands!

---
 clients/c/test.c | 61 ++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 54 insertions(+), 7 deletions(-)

diff --git a/clients/c/test.c b/clients/c/test.c
index 6f7d4e5..a8b77a7 100644
--- a/clients/c/test.c
+++ b/clients/c/test.c
@@ -62,8 +62,8 @@ static size_t cosmo_write_callback(void *ptr, size_t size, size_t nmemb, void *u
   return to_read;
 }
 
-static char *cosmo_build_rpc(cosmo *instance) {
-  json_t *to_send = json_pack("{sssss[]}", "client_id", instance->client_id, "instance_id", instance->instance_id, "commands");
+static char *cosmo_build_rpc(cosmo *instance, json_t *commands) {
+  json_t *to_send = json_pack("{sssssO}", "client_id", instance->client_id, "instance_id", instance->instance_id, "commands", commands);
   assert(to_send);
   char *ret = json_dumps(to_send, 0);
   assert(ret);
@@ -121,8 +121,8 @@ static char *cosmo_send_http(cosmo *instance, char *request) {
   return ret ? transfer.recv_buf : NULL;
 }
 
-static void cosmo_send_rpc(cosmo *instance) {
-  char *request = cosmo_build_rpc(instance);
+static void cosmo_send_rpc(cosmo *instance, json_t *commands) {
+  char *request = cosmo_build_rpc(instance, commands);
 
   char *response = cosmo_send_http(instance, request);
   if (!response) {
@@ -136,10 +136,9 @@ static void cosmo_send_rpc(cosmo *instance) {
     free(response);
     return;
   }
+  printf("response: %s\n", response);
   free(response);
 
-  printf("profile: %s\n", json_string_value(json_object_get(received, "profile")));
-
   json_decref(received);
 }
 
@@ -148,17 +147,62 @@ static void *cosmo_thread_main(void *arg) {
 
   assert(!pthread_mutex_lock(&instance->lock));
   while (!instance->shutdown) {
-    cosmo_send_rpc(instance);
+    while (json_array_size(instance->command_queue)) {
+      json_t *commands = instance->command_queue;
+      instance->command_queue = json_array();
+      assert(!pthread_mutex_unlock(&instance->lock));
+      cosmo_send_rpc(instance, commands);
+      assert(!pthread_mutex_lock(&instance->lock));
+    }
     assert(!pthread_cond_wait(&instance->cond, &instance->lock));
   }
   assert(!pthread_mutex_unlock(&instance->lock));
   return NULL;
 }
 
+// Takes ownership of command.
+static void cosmo_send_command(cosmo *instance, json_t *command) {
+  assert(command);
+  assert(!pthread_mutex_lock(&instance->lock));
+  json_array_append_new(instance->command_queue, command);
+  assert(!pthread_cond_signal(&instance->cond));
+  assert(!pthread_mutex_unlock(&instance->lock));
+}
+
+// Takes ownership of arguments.
+static json_t *cosmo_command(char *name, json_t *arguments) {
+  return json_pack("{ssso}", "command", name, "arguments", arguments);
+}
+
+
+// Public interface below
+
 void cosmo_generate_client_id(char *client_id) {
   cosmo_generate_uuid(client_id);
 }
 
+json_t *cosmo_subject(char *name, char *readable_only_by, char *writeable_only_by) {
+  json_t *ret = json_pack("{ss}", "name", name);
+  if (readable_only_by) {
+    json_object_set_new(ret, "readable_only_by", json_string(readable_only_by));
+  }
+  if (writeable_only_by) {
+    json_object_set_new(ret, "writeable_only_by", json_string(writeable_only_by));
+  }
+  return ret;
+}
+
+void cosmo_subscribe(cosmo *instance, json_t *subject, json_int_t messages, json_int_t last_id) {
+  json_t *arguments = json_pack("{sO}", "subject", subject);
+  if (messages) {
+    json_object_set_new(arguments, "messages", json_integer(messages));
+  }
+  if (last_id) {
+    json_object_set_new(arguments, "last_id", json_integer(last_id));
+  }
+  cosmo_send_command(instance, cosmo_command("subscribe", arguments));
+}
+
 cosmo *cosmo_create(char *client_id) {
   curl_global_init(CURL_GLOBAL_DEFAULT);
 
@@ -194,6 +238,9 @@ int main(int argc, char *argv[]) {
   char client_id[COSMO_CLIENT_ID_SIZE];
   cosmo_generate_client_id(client_id);
   cosmo *instance = cosmo_create(client_id);
+  json_t *subject = cosmo_subject("foobar", NULL, NULL);
+  cosmo_subscribe(instance, subject, -1, 0);
+  json_decref(subject);
   sleep(5);
   cosmo_destroy(instance);