#include <Arduino.h>
#include <WiFi.h>
#include "soc/soc.h"
#include "soc/rtc_cntl_reg.h"
#include "esp_camera.h"

const char* ssid = "Wokwi-GUEST";
const char* password = "";

String serverName = "192.168.217.85";  // Server address
String serverPath = "/websika/webapi/api/upload_image.php";
const int serverPort = 80;

WiFiClient client;

// CAMERA_MODEL_AI_THINKER
#define PWDN_GPIO_NUM     32
#define RESET_GPIO_NUM    -1
#define XCLK_GPIO_NUM      0
#define SIOD_GPIO_NUM     26
#define SIOC_GPIO_NUM     27

#define Y9_GPIO_NUM       35
#define Y8_GPIO_NUM       34
#define Y7_GPIO_NUM       39
#define Y6_GPIO_NUM       36
#define Y5_GPIO_NUM       21
#define Y4_GPIO_NUM       19
#define Y3_GPIO_NUM       18
#define Y2_GPIO_NUM        5
#define VSYNC_GPIO_NUM    25
#define HREF_GPIO_NUM     23
#define PCLK_GPIO_NUM     22

// Removed flash pin definitions and control

volatile bool newRFID = false;
String UIDCard = "";
String id_alat = "1"; // Example id_alat, change as needed

void setup() {
  WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); 
  Serial.begin(115200);  // Upgrade baud rate for faster debugging

  delay(1000);

  WiFi.mode(WIFI_STA);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);  
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  Serial.println();
  Serial.print("ESP32Cam IP Address: ");
  Serial.println(WiFi.localIP());

  // Initialize the camera
  camera_config_t config;
  config.ledc_channel = LEDC_CHANNEL_0;
  config.ledc_timer = LEDC_TIMER_0;
  config.pin_d0 = Y2_GPIO_NUM;
  config.pin_d1 = Y3_GPIO_NUM;
  config.pin_d2 = Y4_GPIO_NUM;
  config.pin_d3 = Y5_GPIO_NUM;
  config.pin_d4 = Y6_GPIO_NUM;
  config.pin_d5 = Y7_GPIO_NUM;
  config.pin_d6 = Y8_GPIO_NUM;
  config.pin_d7 = Y9_GPIO_NUM;
  config.pin_xclk = XCLK_GPIO_NUM;
  config.pin_pclk = PCLK_GPIO_NUM;
  config.pin_vsync = VSYNC_GPIO_NUM;
  config.pin_href = HREF_GPIO_NUM;
  config.pin_sscb_sda = SIOD_GPIO_NUM;
  config.pin_sscb_scl = SIOC_GPIO_NUM;
  config.pin_pwdn = PWDN_GPIO_NUM;
  config.pin_reset = RESET_GPIO_NUM;
  config.xclk_freq_hz = 20000000;
  config.pixel_format = PIXFORMAT_JPEG;

  // Init with high specs to pre-allocate larger buffers
  if (psramFound()) {
    config.frame_size = FRAMESIZE_CIF; // Set frame size to 352x288
    config.jpeg_quality = 10;  // 0-63 lower number means higher quality
    config.fb_count = 2;
  } else {
    config.frame_size = FRAMESIZE_CIF; // Set frame size to 352x288
    config.jpeg_quality = 8;  // 0-63 lower number means higher quality
    config.fb_count = 1;
  }

  // Initialize the camera
  esp_err_t err = esp_camera_init(&config);
  if (err != ESP_OK) {
    Serial.printf("Camera init failed with error 0x%x", err);
    delay(1000);
    ESP.restart();
  }

  sensor_t * s = esp_camera_sensor_get();
  s->set_framesize(s, FRAMESIZE_CIF); // Set frame size to 352x288
}

void loop() {
  if (newRFID) {
    newRFID = false;

    if (UIDCard.length() > 0) {
      sendPhoto(UIDCard, id_alat);
    } else {
      Serial.println("Invalid RFID detected.");
    }
  }
}

// Interrupt Service Routine (ISR) for serial data
void serialEvent() {
  if (Serial.available() > 0) {
    UIDCard = Serial.readStringUntil('\n');
    UIDCard.trim();
    newRFID = true;
  }
}

void sendPhoto(String UIDCard, String id_alat) {
  camera_fb_t * fb = esp_camera_fb_get();
  if (!fb) {
    Serial.println("Camera capture failed");
    return;
  }

  Serial.println("Connecting to server: " + serverName);

  if (client.connect(serverName.c_str(), serverPort)) {
    Serial.println("Connection successful!");

    String post_data_uid = "--dataMarker\r\nContent-Disposition: form-data; name=\"rfid\"\r\n\r\n" + UIDCard + "\r\n";
    String post_data_id_alat = "--dataMarker\r\nContent-Disposition: form-data; name=\"id_alat\"\r\n\r\n" + id_alat + "\r\n";
    String post_data_image = "--dataMarker\r\nContent-Disposition: form-data; name=\"imageFile\"; filename=\"_esp32Photo.jpg\"\r\nContent-Type: image/jpeg\r\n\r\n";
    String boundary = "\r\n--dataMarker--\r\n";

    String head = post_data_id_alat + post_data_uid + post_data_image;
    uint32_t imageLen = fb->len;
    uint32_t dataLen = head.length() + boundary.length();
    uint32_t totalLen = imageLen + dataLen;
    
    client.println("POST " + serverPath + " HTTP/1.1");
    client.println("Host: " + serverName);
    client.println("Content-Length: " + String(totalLen));
    client.println("Content-Type: multipart/form-data; boundary=dataMarker");
    client.println();
    client.print(head);

    uint8_t *fbBuf = fb->buf;
    size_t fbLen = fb->len;
    for (size_t n = 0; n < fbLen; n += 1024) {
      if (n + 1024 < fbLen) {
        client.write(fbBuf, 1024);
        fbBuf += 1024;
      } else if (fbLen % 1024 > 0) {
        size_t remainder = fbLen % 1024;
        client.write(fbBuf, remainder);
      }
    }
    client.print(boundary);

    esp_camera_fb_return(fb);

    // Read the server response
    String DataBody;
    int timeout = 10000; // 10 seconds timeout
    unsigned long startTime = millis();
    while (client.connected() && (millis() - startTime < timeout)) {
      if (client.available()) {
        char c = client.read();
        DataBody += c;
      }
    }

    Serial.println("Response:");
    Serial.println(DataBody);
    Serial.println("##############");
    
    client.stop();
  } else {
    Serial.println("Connection to " + serverName + " failed.");
  }
}