1 files changed, 80 insertions, 0 deletions
diff --git a/src/components/ble/AlertNotificationService.cpp b/src/components/ble/AlertNotificationService.cpp
new file mode 100644
index 00000000..9a9b535d
--- /dev/null
+++ b/src/components/ble/AlertNotificationService.cpp
@@ -0,0 +1,80 @@
+
+#include <hal/nrf_rtc.h>
+#include "NotificationManager.h"
+#include <systemtask/SystemTask.h>
+
+#include "AlertNotificationService.h"
+#include <cstring>
+
+using namespace Pinetime::Controllers;
+
+constexpr ble_uuid16_t AlertNotificationService::ansUuid;
+constexpr ble_uuid16_t AlertNotificationService::ansCharUuid;
+
+
+int AlertNotificationCallback(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg) {
+  auto anService = static_cast<AlertNotificationService*>(arg);
+  return anService->OnAlert(conn_handle, attr_handle, ctxt);
+}
+
+void AlertNotificationService::Init() {
+  int res;
+  res = ble_gatts_count_cfg(serviceDefinition);
+  ASSERT(res == 0);
+
+  res = ble_gatts_add_svcs(serviceDefinition);
+  ASSERT(res == 0);
+}
+
+AlertNotificationService::AlertNotificationService ( System::SystemTask& systemTask, NotificationManager& notificationManager )
+  : characteristicDefinition{
+                {
+                        .uuid = (ble_uuid_t *) &ansCharUuid,
+                        .access_cb = AlertNotificationCallback,
+                        .arg = this,
+                        .flags = BLE_GATT_CHR_F_WRITE
+                },
+                {
+                  0
+                }
+        },
+        serviceDefinition{
+                {
+                        /* Device Information Service */
+                        .type = BLE_GATT_SVC_TYPE_PRIMARY,
+                        .uuid = (ble_uuid_t *) &ansUuid,
+                        .characteristics = characteristicDefinition
+                },
+                {
+                        0
+                },
+        }, m_systemTask{systemTask}, m_notificationManager{notificationManager} {
+}
+
+int AlertNotificationService::OnAlert(uint16_t conn_handle, uint16_t attr_handle,
+                                                    struct ble_gatt_access_ctxt *ctxt) {
+
+  if (ctxt->op == BLE_GATT_ACCESS_OP_WRITE_CHR) {
+    // TODO implement this with more memory safety (and constexpr)
+    static const size_t maxBufferSize{21};
+    static const size_t maxMessageSize{18};
+    size_t bufferSize = min(OS_MBUF_PKTLEN(ctxt->om), maxBufferSize);
+
+    uint8_t data[bufferSize];
+    os_mbuf_copydata(ctxt->om, 0, bufferSize, data);
+
+    char *s = (char *) &data[3];
+    auto messageSize = min(maxMessageSize, (bufferSize-3));
+
+    for (uint i = 0; i < messageSize-1; i++) {
+      if (s[i] == 0x00) {
+        s[i] = 0x0A;
+      }
+    }
+    s[messageSize-1] = '\0';
+
+    m_notificationManager.Push(Pinetime::Controllers::NotificationManager::Categories::SimpleAlert, s, messageSize);
+    m_systemTask.PushMessage(Pinetime::System::SystemTask::Messages::OnNewNotification);
+  }
+  return 0;
+}