App hub and more (#383)

- Added `AppHub` app
- Added `AppHubDetails` app
- Added `cJSON` dependency
- Renamed `AppSim` module to `FirmwareSim`
- Added extra `tt::app::alertdialg::start()`
- Renamed `addApp()`, `removeApp()`, `findAppById()` and `getApps()` to `addAppManifest()`, `removeAppManifest()`, `findAppManifestById()` and `getAppManifests()`
- Added `tt::lvgl::toolbar_clear_actions()`
- Added `tt::network::EspHttpClient` as a thread-safe wrapper around `esp_http_client`
- Added `tt::network::http::download()` to download files
- Added `tt::network::ntp::isSynced()`
- When time is synced, the timestamp is stored in NVS flash. On boot, it is restored. This helps SSL connections when doing a quick reset: when WiFi reconnects, the user doesn't have to wait for NTP sync before SSL works.
- Added `tt::json::Reader` as a `cJSON` wrapper
- Added `int64_t` support for `Preferences`
- Added `int64_t` support for `Bundle`
- Added dependencies: `cJSON`, `esp-tls`
- When time is synced via NTP, disable time sync.
- Added docs to 'tt::file::` functions
- Added `tt::string::join()` that works with `std::vector<const char*>`
- Fixed `tt::file::getLastPathSegment()` for the scenario when a path was passed with only a single segment
- Set `CONFIG_ESP_MAIN_TASK_STACK_SIZE=5120` (from about 3k) for all boards
- Set `CONFIG_MBEDTLS_SSL_PROTO_TLS1_3=y` for all boards

Tactility/Source/network/Ntp.cpp

@@ -1,4 +1,5 @@
-#include "Tactility/network/NtpPrivate.h"
+#include <Tactility/network/NtpPrivate.h>
+#include <Tactility/Preferences.h>
 
 #ifdef ESP_PLATFORM
 #include <Tactility/kernel/SystemEvents.h>
@@ -7,19 +8,43 @@
 #include <esp_sntp.h>
 #endif
 
-#define TAG "ntp"
-
 namespace tt::network::ntp {
 
+constexpr auto* TAG = "NTP";
+static bool processedSyncEvent = false;
+
 #ifdef ESP_PLATFORM
 
-static void onTimeSynced(struct timeval* tv) {
+void storeTimeInNvs() {
+    time_t now;
+    time(&now);
+
+    auto preferences = std::make_unique<Preferences>("time");
+    preferences->putInt64("syncTime", now);
+    TT_LOG_I(TAG, "Stored time %llu", now);
+}
+
+void setTimeFromNvs() {
+    auto preferences = std::make_unique<Preferences>("time");
+    time_t synced_time;
+    if (preferences->optInt64("syncTime", synced_time)) {
+        TT_LOG_I(TAG, "Restoring last known time to %llu", synced_time);
+        timeval get_nvs_time;
+        get_nvs_time.tv_sec = synced_time;
+        settimeofday(&get_nvs_time, nullptr);
+    }
+}
+
+static void onTimeSynced(timeval* tv) {
     TT_LOG_I(TAG, "Time synced (%llu)", tv->tv_sec);
+    processedSyncEvent = true;
+    esp_netif_sntp_deinit();
+    storeTimeInNvs();
     kernel::publishSystemEvent(kernel::SystemEvent::Time);
 }
 
 void init() {
-    esp_sntp_config_t config = ESP_NETIF_SNTP_DEFAULT_CONFIG("pool.ntp.org");
+    esp_sntp_config_t config = ESP_NETIF_SNTP_DEFAULT_CONFIG("time.cloudflare.com");
     config.sync_cb = onTimeSynced;
     esp_netif_sntp_init(&config);
 }
@@ -27,8 +52,13 @@ void init() {
 #else
 
 void init() {
+    processedSyncEvent = true;
 }
 
 #endif
 
+bool isSynced() {
+    return processedSyncEvent;
+}
+
 }