Adolfo Reyna
620d56e19a
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347 lines
12 KiB
C++
347 lines
12 KiB
C++
#include <Tactility/DeprecatedPaths.h>
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#include <Tactility/Mutex.h>
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#include <Tactility/app/apphub/AppHub.h>
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#include <Tactility/app/apphub/AppHubEntry.h>
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#include <Tactility/app/apphubdetails/AppHubDetailsApp.h>
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#include <Tactility/file/File.h>
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#include <Tactility/service/wifi/Wifi.h>
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#include <app/event.h>
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#include <app/manager.h>
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#include <app/manifest.h>
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#include <app/scheduler.h>
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#include <http/download.h>
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#include <lvgl_window_manager/window_manager.h>
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#include <tactility/check.h>
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#include <tactility/log.h>
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#include <lvgl/lvgl.h>
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#include <lvgl/widgets/spinner.h>
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#include <lvgl/widgets/toolbar.h>
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#include <algorithm>
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#include <atomic>
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#include <format>
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namespace tt::app::apphub {
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constexpr auto* TAG = "AppHub";
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extern const ::AppManifest manifest;
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namespace {
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struct Context {
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uint32_t appInstanceId;
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lv_obj_t* contentWrapper = nullptr;
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lv_obj_t* refreshButton = nullptr;
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std::string cachedAppsJsonFile = std::format("{}/app_hub.json", getTempPath());
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AppHubEntryList entries;
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Mutex mutex;
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// Survives across a bury/resurface cycle (e.g. opening AppHubDetailsApp and returning),
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int32_t scrollY = 0;
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// Set by createWidgets(), consumed by the first showApps() after resurfacing. The refresh
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// itself runs async (see requestRefresh() below), so when showApps() first populates the
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// list, contentWrapper is still an empty spinner; scrollY must come from here instead of a
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// live read off it.
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bool restoreScrollOnNextShow = false;
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// Only the first createWidgets() call triggers a network refresh. The rest uses the cached file.
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bool needsInitialRefresh = true;
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TaskEventGroup* eventGroup = nullptr;
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uint32_t refreshRequestedBit = 0;
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std::atomic<bool> refreshRequested {false};
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HttpDownloadSubscription downloadSub {};
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bool downloadInProgress = false;
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};
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void showApps(Context* ctx);
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void refresh(Context* ctx);
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void onBackPressed(lv_event_t* event) {
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auto* ctx = static_cast<Context*>(lv_event_get_user_data(event));
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app_event_emit_close(ctx->appInstanceId);
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}
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void onAppPressed(lv_event_t* e) {
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auto* ctx = static_cast<Context*>(lv_event_get_user_data(e));
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auto* widget = lv_event_get_target_obj(e);
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const auto* user_data = lv_obj_get_user_data(widget);
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const intptr_t index = reinterpret_cast<intptr_t>(user_data);
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ctx->mutex.lock();
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if (index < ctx->entries.size()) {
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apphubdetails::start(ctx->entries[index]);
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}
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ctx->mutex.unlock();
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}
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void requestRefresh(Context* ctx) {
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ctx->refreshRequested = true;
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task_event_group_signal(ctx->eventGroup, ctx->refreshRequestedBit);
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}
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void onRefreshPressed(lv_event_t* e) {
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auto* ctx = static_cast<Context*>(lv_event_get_user_data(e));
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requestRefresh(ctx);
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}
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void showRefreshFailedError(Context* ctx, const char* message) {
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lv_obj_clean(ctx->contentWrapper);
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auto* label = lv_label_create(ctx->contentWrapper);
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lv_label_set_text(label, message);
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lv_obj_align(label, LV_ALIGN_CENTER, 0, 0);
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lv_obj_remove_flag(ctx->refreshButton, LV_OBJ_FLAG_HIDDEN);
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}
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void showNoInternet(Context* ctx) {
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showRefreshFailedError(ctx, "No Internet Connection");
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}
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void showApps(Context* ctx) {
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if (ctx->contentWrapper == nullptr) {
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return;
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}
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// Refresh rebuilds the list from scratch (cached copy, then again once the network fetch
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// lands), which would otherwise reset the user's scroll position each time.
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int32_t scrollY;
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if (ctx->restoreScrollOnNextShow) {
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scrollY = ctx->scrollY;
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ctx->restoreScrollOnNextShow = false;
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} else {
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scrollY = lv_obj_get_scroll_y(ctx->contentWrapper);
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}
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lv_obj_clean(ctx->contentWrapper);
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ctx->mutex.lock();
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if (parseJson(ctx->cachedAppsJsonFile, ctx->entries)) {
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// An empty targetPlatforms list means the entry runs everywhere; otherwise it must name
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// this build's own target to be installable here. The simulator isn't a real MCU target,
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// so it has nothing to match against and skips this filter entirely.
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std::erase_if(ctx->entries, [](const AppHubEntry& entry) {
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#ifdef ESP_PLATFORM
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return !entry.targetPlatforms.empty() &&
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std::ranges::find(entry.targetPlatforms, CONFIG_IDF_TARGET) == entry.targetPlatforms.end();
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#else
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(void)entry;
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return false;
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#endif
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});
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std::ranges::sort(ctx->entries, [](auto left, auto right) {
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return left.appName < right.appName;
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});
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auto* list = lv_list_create(ctx->contentWrapper);
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lv_obj_set_style_pad_all(list, 0, LV_STATE_DEFAULT);
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lv_obj_set_size(list, LV_PCT(100), LV_SIZE_CONTENT);
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for (int i = 0; i < ctx->entries.size(); i++) {
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auto& entry = ctx->entries[i];
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LOG_I(TAG, "Adding %s", entry.appName.c_str());
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AppManifest manifest;
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const char* icon = app_manager_find_manifest(entry.appId.c_str(), &manifest) == ERROR_NONE ? LV_SYMBOL_OK : nullptr;
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auto* entry_button = lv_list_add_button(list, icon, entry.appName.c_str());
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auto int_as_voidptr = reinterpret_cast<void*>(i);
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lv_obj_set_user_data(entry_button, int_as_voidptr);
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lv_obj_add_event_cb(entry_button, onAppPressed, LV_EVENT_SHORT_CLICKED, ctx);
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}
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lv_obj_scroll_to_y(ctx->contentWrapper, scrollY, LV_ANIM_OFF);
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} else {
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showRefreshFailedError(ctx, "Failed to load content");
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}
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ctx->mutex.unlock();
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}
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// Runs on appMain()'s own task (triggered via requestRefresh()), never directly from the LVGL task.
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void refresh(Context* ctx) {
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// Buried (e.g. AppHubDetailsApp is open): destroyWidgets() already released these. A refresh
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// request queued just before burying could still land here, so re-check rather than assume
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// requestRefresh() and refresh() always run against a live window.
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if (ctx->downloadInProgress || ctx->contentWrapper == nullptr) {
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return;
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}
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lvgl_lock();
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lv_obj_clean(ctx->contentWrapper);
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auto* spinner = lvgl_spinner_create(ctx->contentWrapper);
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lv_obj_align(spinner, LV_ALIGN_CENTER, 0, 0);
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lv_obj_add_flag(ctx->refreshButton, LV_OBJ_FLAG_HIDDEN);
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lvgl_unlock();
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if (service::wifi::getRadioState() != service::wifi::RadioState::ConnectionActive) {
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lvgl_lock();
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showNoInternet(ctx);
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lvgl_unlock();
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return;
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}
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if (file::isFile(ctx->cachedAppsJsonFile)) {
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lvgl_lock();
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showApps(ctx);
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lvgl_unlock();
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}
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if (http_download_subscribe(&ctx->downloadSub, ctx->eventGroup) != ERROR_NONE) {
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LOG_E(TAG, "Failed to subscribe to download events");
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lvgl_lock();
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showRefreshFailedError(ctx, "Cannot reach server");
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lvgl_unlock();
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return;
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}
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auto url = getAppsJsonUrl();
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if (http_download_start(url.c_str(), CERTIFICATE_PATH, ctx->cachedAppsJsonFile.c_str(), &ctx->downloadSub) != ERROR_NONE) {
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LOG_E(TAG, "Failed to start download");
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http_download_unsubscribe(&ctx->downloadSub);
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lvgl_lock();
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showRefreshFailedError(ctx, "Cannot reach server");
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lvgl_unlock();
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return;
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}
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ctx->downloadInProgress = true;
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}
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// Called from appMain()'s loop once http_download_poll() reports the download's terminal event.
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void onDownloadFinished(Context* ctx, const HttpDownloadEvent& event) {
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ctx->downloadInProgress = false;
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http_download_unsubscribe(&ctx->downloadSub);
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bool succeeded = event.type == HTTP_DOWNLOAD_EVENT_SUCCESS;
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ctx->needsInitialRefresh = !succeeded;
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if (succeeded) {
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LOG_I(TAG, "Request success (status %d)", event.status_code);
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} else {
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LOG_E(TAG, "Request failed (status %d): %s", event.status_code, event.error.message);
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}
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if (ctx->contentWrapper == nullptr) {
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// Buried (e.g. AppHubDetailsApp is open): destroyWidgets() already released the widgets
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// above. createWidgets() picks this up via needsInitialRefresh on resurface instead.
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return;
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}
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lvgl_lock();
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if (succeeded) {
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showApps(ctx);
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} else {
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showRefreshFailedError(ctx, "Cannot reach server");
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}
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lvgl_unlock();
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}
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void createWidgets(lv_obj_t* parent, void* userData) {
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auto* ctx = static_cast<Context*>(userData);
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lv_obj_set_flex_flow(parent, LV_FLEX_FLOW_COLUMN);
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lv_obj_set_style_pad_row(parent, 0, LV_STATE_DEFAULT);
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auto* toolbar = lvgl_toolbar_create(parent, "App Hub");
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// The global toolbar nav callback only knows how to stop old-model apps.
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lvgl_toolbar_set_nav_action(toolbar, LV_SYMBOL_CLOSE, onBackPressed, ctx);
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ctx->refreshButton = lvgl_toolbar_add_image_button_action(toolbar, LV_SYMBOL_REFRESH, onRefreshPressed, ctx);
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lv_obj_add_flag(ctx->refreshButton, LV_OBJ_FLAG_HIDDEN);
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ctx->contentWrapper = lv_obj_create(parent);
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lv_obj_set_width(ctx->contentWrapper, LV_PCT(100));
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lv_obj_set_flex_grow(ctx->contentWrapper, 1);
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lv_obj_set_style_pad_all(ctx->contentWrapper, 0, LV_STATE_DEFAULT);
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lv_obj_set_style_pad_ver(ctx->contentWrapper, 0, LV_STATE_DEFAULT);
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ctx->restoreScrollOnNextShow = true;
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if (ctx->needsInitialRefresh) {
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requestRefresh(ctx);
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} else {
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// Resurfacing (e.g. returning from AppHubDetailsApp): redisplay the cache already
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// loaded this session instead of hitting the network again. window_manager calls
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// createWidgets() with the LVGL lock already held, so this can touch widgets directly.
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showApps(ctx);
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}
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}
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void destroyWidgets(void* userData) {
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auto* ctx = static_cast<Context*>(userData);
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if (ctx->contentWrapper != nullptr) {
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ctx->scrollY = lv_obj_get_scroll_y(ctx->contentWrapper);
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}
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ctx->contentWrapper = nullptr;
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ctx->refreshButton = nullptr;
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}
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int32_t appMain(int argc, char* argv[]) {
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uint32_t appInstanceId = app_scheduler_current_app_id();
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Context ctx;
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ctx.appInstanceId = appInstanceId;
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TaskEventGroup event_group {};
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task_event_group_construct(&event_group);
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ctx.eventGroup = &event_group;
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if (task_event_group_claim_bit(&event_group, &ctx.refreshRequestedBit) != ERROR_NONE) {
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LOG_W(TAG, "Failed to claim a refresh-requested bit; refresh button won't work");
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}
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AppEventSubscription sub {};
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check(app_event_subscribe(&sub, &event_group) == ERROR_NONE);
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WindowId window = window_manager_create_ext(appInstanceId, createWidgets, destroyWidgets, &ctx);
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bool shouldClose = false;
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while (!shouldClose) {
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task_event_group_wait_any(&event_group, nullptr, portMAX_DELAY);
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AppEvent event {};
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while (app_event_poll(&sub, &event) == ERROR_NONE) {
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switch (event.type) {
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case APP_EVENT_CLOSE:
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shouldClose = true;
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break;
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default:
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break;
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}
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}
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if (ctx.downloadInProgress) {
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HttpDownloadEvent download_event {};
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if (http_download_poll(&ctx.downloadSub, &download_event) == ERROR_NONE) {
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onDownloadFinished(&ctx, download_event);
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}
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}
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if (!shouldClose && ctx.refreshRequested.exchange(false)) {
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refresh(&ctx);
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}
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}
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if (ctx.downloadInProgress) {
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http_download_cancel(&ctx.downloadSub);
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http_download_unsubscribe(&ctx.downloadSub);
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ctx.downloadInProgress = false;
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}
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window_manager_remove(window);
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check(app_event_unsubscribe(&sub) == ERROR_NONE);
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task_event_group_destruct(&event_group);
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return 0;
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}
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} // namespace
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extern const ::AppManifest manifest = {
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.id = "tactility.apphub",
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.name = "App Hub",
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.category = APP_CATEGORY_SYSTEM,
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.location = {APP_LOCATION_MEMORY, reinterpret_cast<void*>(appMain)},
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.flags = APP_MANIFEST_FLAG_HIDDEN
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};
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} // namespace tt::app::apphub
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