Function getCalFeed

ESP32_AP-Flasher/src/contentmanager.cpp:1314–1607

#ifdef CONTENT_CAL
bool getCalFeed(String &filename, JsonObject &cfgobj, tagRecord *&taginfo, imgParam &imageParams) {
    // google apps scripts method to retrieve calendar
    // see https://github.com/OpenEPaperLink/OpenEPaperLink/wiki/Google-Apps-Scripts for description

    wsLog("get calendar");

    JsonDocument loc;
    getTemplate(loc, 11, taginfo->hwType);

    String URL = cfgobj["apps_script_url"].as<String>() + "?days=" + loc["days"].as<String>();

    time_t now;
    time(&now);
    struct tm timeinfo;
    localtime_r(&now, &timeinfo);
    char dateString[40];
    strftime(dateString, sizeof(dateString), languageDateFormat[0].c_str(), &timeinfo);

    HTTPClient http;
    // logLine("http getCalFeed " + URL);
    http.begin(URL);
    http.setTimeout(10000);
    http.setFollowRedirects(HTTPC_STRICT_FOLLOW_REDIRECTS);
    int httpCode = http.GET();
    if (httpCode != 200) {
        wsErr("getCalFeed http error " + String(httpCode));
        return false;
    }

    JsonDocument doc;
    DeserializationError error = deserializeJson(doc, http.getString());
    if (error) {
        wsErr(error.c_str());
    }
    http.end();

    TFT_eSprite spr = TFT_eSprite(&tft);

    if (loc["rotate"] == 1) {
        int temp = imageParams.height;
        imageParams.height = imageParams.width;
        imageParams.width = temp;
        imageParams.rotatebuffer = 1 - (imageParams.rotatebuffer % 2);
        initSprite(spr, imageParams.width, imageParams.height, imageParams);
    } else {
        initSprite(spr, imageParams.width, imageParams.height, imageParams);
    }

    switch (loc["mode"].as<int>()) {
        case 0: {
            // appointment list
            String title = cfgobj["title"];
            if (util::isEmptyOrNull(title)) title = "Calendar";
            drawString(spr, title, loc["title"][0], loc["title"][1], loc["title"][2], TL_DATUM, TFT_BLACK);
            drawString(spr, dateString, loc["date"][0], loc["date"][1], loc["title"][2], TR_DATUM, TFT_BLACK);

            int n = doc.size();
            if (n > loc["items"]) n = loc["items"];