data collection

[Eduardo Pretel]

hi everyone.

I am using the code for patch documentation, and this updates the current value, how do I make it generate a new value and save the previous one. this is the code: 

#if defined(ESP32)
#include <WiFi.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#endif

#include <Firebase_ESP_Client.h>

// Provide the token generation process info.
#include <addons/TokenHelper.h>

/* 1. Define the WiFi credentials */
#define WIFI_SSID "WIFI_AP"
#define WIFI_PASSWORD "WIFI_PASSWORD"

/* 2. Define the API Key */
#define API_KEY "API_KEY"

/* 3. Define the project ID */
#define FIREBASE_PROJECT_ID "PROJECT_ID"

/* 4. Define the user Email and password that alreadey registerd or added in your project */
#define USER_EMAIL "USER_EMAIL"
#define USER_PASSWORD "USER_PASSWORD"

// Define Firebase Data object
FirebaseData fbdo;

FirebaseAuth auth;
FirebaseConfig config;

unsigned long dataMillis = 0;
int count = 0;

bool taskcomplete = false;

void setup()
{

    Serial.begin(115200);

    WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
    Serial.print("Connecting to Wi-Fi");
    while (WiFi.status() != WL_CONNECTED)
    {
        Serial.print(".");
        delay(300);
    }
    Serial.println();
    Serial.print("Connected with IP: ");
    Serial.println(WiFi.localIP());
    Serial.println();

    Serial.printf("Firebase Client v%s\n\n", FIREBASE_CLIENT_VERSION);

    /* Assign the api key (required) */
    config.api_key = API_KEY;

    /* Assign the user sign in credentials */
    auth.user.email = USER_EMAIL;
    auth.user.password = USER_PASSWORD;

    /* Assign the callback function for the long running token generation task */
    config.token_status_callback = tokenStatusCallback; // see addons/TokenHelper.h

    Firebase.begin(&config, &auth);

    Firebase.reconnectWiFi(true);
}

void loop()
{

    // Firebase.ready() should be called repeatedly to handle authentication tasks.

    if (Firebase.ready() && (millis() - dataMillis > 60000 || dataMillis == 0))
    {
        dataMillis = millis();

        // For the usage of FirebaseJson, see examples/FirebaseJson/BasicUsage/Create.ino
        FirebaseJson content;

        // aa is the collection id, bb is the document id.
        String documentPath = "aa/bb";

        // If the document path contains space e.g. "a b c/d e f"
        // It should encode the space as %20 then the path will be "a%20b%20c/d%20e%20f"

        if (!taskcomplete)
        {
            taskcomplete = true;

            content.clear();
            content.set("fields/count/integerValue", String(count).c_str());
            content.set("fields/status/booleanValue", count % 2 == 0);

            Serial.print("Create a document... ");

            if (Firebase.Firestore.createDocument(&fbdo, FIREBASE_PROJECT_ID, "" /* databaseId can be (default) or empty */, documentPath.c_str(), content.raw()))
                Serial.printf("ok\n%s\n\n", fbdo.payload().c_str());
            else
                Serial.println(fbdo.errorReason());
        }

        count++;
        content.clear();
        content.set("fields/count/integerValue", String(count).c_str());
        content.set("fields/status/booleanValue", count % 2 == 0);

        Serial.print("Update a document... ");

        /** if updateMask contains the field name that exists in the remote document and
         * this field name does not exist in the document (content), that field will be delete from remote document
         */

        if (Firebase.Firestore.patchDocument(&fbdo, FIREBASE_PROJECT_ID, "" /* databaseId can be (default) or empty */, documentPath.c_str(), content.raw(), "count,status" /* updateMask */))
            Serial.printf("ok\n%s\n\n", fbdo.payload().c_str());
        else
            Serial.println(fbdo.errorReason());
    }
}