From ec687138ff107a3c6f26019ced5f7d3e030c7175 Mon Sep 17 00:00:00 2001
From: Tero Marttila <terom@fixme.fi>
Date: Thu, 26 Dec 2024 20:38:50 +0200
Subject: [PATCH] main: leds status api

---
 main/http_routes.c |  1 +
 main/http_routes.h |  1 +
 main/leds_http.c   | 65 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 67 insertions(+)

diff --git a/main/http_routes.c b/main/http_routes.c
index 1defa041..41c77d84 100644
--- a/main/http_routes.c
+++ b/main/http_routes.c
@@ -35,6 +35,7 @@ const struct http_route http_routes[] = {
 
   /* leds_http.c */
   { "GET",  "api/leds",           leds_api_get,           NULL },
+  { "GET",  "api/leds/status",    leds_api_get_status,    NULL },
   { "POST", "api/leds",           leds_api_post,          NULL },
 
   { "GET",  "api/leds/test",      leds_api_test_get,      NULL },
diff --git a/main/http_routes.h b/main/http_routes.h
index 17caa5c5..e1d9b0df 100644
--- a/main/http_routes.h
+++ b/main/http_routes.h
@@ -39,6 +39,7 @@ int artnet_api_outputs_handler(struct http_request *request, struct http_respons
 
 /* leds_http.c */
 int leds_api_get(struct http_request *request, struct http_response *response, void *ctx);
+int leds_api_get_status(struct http_request *request, struct http_response *response, void *ctx);
 int leds_api_post(struct http_request *request, struct http_response *response, void *ctx);
 
 int leds_api_test_get(struct http_request *request, struct http_response *response, void *ctx);
diff --git a/main/leds_http.c b/main/leds_http.c
index e2589b06..c289b5af 100644
--- a/main/leds_http.c
+++ b/main/leds_http.c
@@ -141,6 +141,71 @@ int leds_api_get(struct http_request *request, struct http_response *response, v
   return 0;
 }
 
+struct leds_api_query {
+  struct leds_state *state;
+};
+
+int leds_api_query(struct http_request *request, struct leds_api_query *query)
+{
+  char *key, *value;
+  int index;
+  int err;
+
+  while (!(err = http_request_query(request, &key, &value))) {
+    if (strcmp(key, "leds") == 0) {
+      if (sscanf(value, "leds%d", &index) <= 0) {
+        LOG_WARN("invalid ?leds=%s", value);
+        return HTTP_UNPROCESSABLE_ENTITY;
+      } else if (index > 0 && index <= LEDS_COUNT) {
+        query->state = &leds_states[index - 1];
+      } else {
+        LOG_WARN("invalid ?leds=%s", value);
+        return HTTP_UNPROCESSABLE_ENTITY;
+      }
+
+      return 0;
+    }
+  }
+
+  if (!query->state) {
+    LOG_WARN("missing ?leds=...");
+    return HTTP_UNPROCESSABLE_ENTITY;
+  }
+
+
+  return 0;
+}
+
+static int leds_api_write_status(struct json_writer *w, void *ctx)
+{
+  struct leds_api_query *query = ctx;
+
+  return JSON_WRITE_OBJECT(w, leds_api_write_object_status(w, query->state));
+}
+
+int leds_api_get_status(struct http_request *request, struct http_response *response, void *ctx)
+{
+  struct leds_api_query query = {};
+  int err;
+
+  if ((err = http_request_headers(request, NULL))) {
+    LOG_WARN("http_request_headers");
+    return err;
+  }
+
+  if ((err = leds_api_query(request, &query))) {
+    LOG_WARN("leds_api_query");
+    return err;
+  }
+
+  if ((err = write_http_response_json(response, leds_api_write_status, &query))) {
+    LOG_WARN("write_http_response_json -> leds_api_write_status");
+    return err;
+  }
+
+  return 0;
+}
+
 /* GET /api/leds/test */
 static int leds_api_write_test_array(struct json_writer *w)
 {