wiowntone/api.ino

#include <HTTPClient.h>
#include <FirebaseJson.h>

#define PLAYER_UPDATE_INTERVAL_MS (500)
#define UI_ENTRIES_TO_LOAD (20)

static unsigned long playerLastUpdateTime = 0;
static ViewMode lastViewMode = (ViewMode)-1;

String httpURL(String path) {
  return String(OWNTONE_SERVER_ADDRESS) + "/api/" + path;
}

String httpGET(String path) {
  HTTPClient http;

  Serial.println(httpURL(path));
  
  http.begin(httpURL(path));
  http.GET();
  String out = http.getString();
  http.end();

  return out;
}

void apiDebug(AppState *state) {
  
}

void apiLoop(AppState *state) {
  bool playerNeedsUpdate = (state->sinceBoot - playerLastUpdateTime) > PLAYER_UPDATE_INTERVAL_MS;
  playerNeedsUpdate = playerNeedsUpdate || (playerLastUpdateTime > state->sinceBoot);
  if (playerNeedsUpdate) {
    String playerText = httpGET(String("player"));
    FirebaseJson json;
    json.setJsonData(playerText);
    FirebaseJsonData result;
    json.get(result, "volume");
    
    state->volume = result.to<int>();

    playerLastUpdateTime = state->sinceBoot;
  }

  bool viewNeedsUpdate = (state->viewMode != lastViewMode);
  if (viewNeedsUpdate) {
    String parameters = "?limit=" + String(UI_ENTRIES_TO_LOAD);
    lastViewMode = state->viewMode;
    if (state->viewMode == ViewModeArtists) {
      String artistsText = httpGET(String("library/artists" + parameters));
      FirebaseJson json;
      json.setJsonData(artistsText);
      FirebaseJsonData result;
      json.get(result, "items");
      FirebaseJsonArray arr;
      result.get<FirebaseJsonArray>(arr);
      Serial.println(arr.size());

      if(state->uiEntries != NULL) {
        free(state->uiEntries);
      }
      state->uiEntries = (UIEntry *)malloc(UI_ENTRIES_TO_LOAD * sizeof(UIEntry));
      state->uiEntriesCount = UI_ENTRIES_TO_LOAD;

      FirebaseJsonData arrayIndexResult;
      for (size_t i = 0; i < arr.size(); i++) {
        Serial.println("Processing item...");
        String path = "/[" + String(i) + "]/";
        String namePath = path + "name";
        String idPath = path + "id";

        Serial.println("name...");
        arr.get(arrayIndexResult, namePath);
        String text = arrayIndexResult.to<String>().c_str();

        Serial.println("id...");
        arr.get(arrayIndexResult, idPath);
        int id = arrayIndexResult.to<int>();

        Serial.println("setting...");
        state->uiEntries[i].text = text;
        state->uiEntries[i].id = id;
        
        Serial.println(text);
      }
    }
  }
}

void apiSetup(AppState *state) {
  
}