#include "esp_camera.h"
#include <WiFi.h>
#include <ArduinoWebsockets.h>

//
// WARNING!!! Make sure that you have either selected ESP32 Wrover Module,
//            or another board which has PSRAM enabled
//

// Select camera model
//#define CAMERA_MODEL_WROVER_KIT
//#define CAMERA_MODEL_ESP_EYE
//#define CAMERA_MODEL_M5STACK_PSRAM
//#define CAMERA_MODEL_M5STACK_WIDE
#define CAMERA_MODEL_AI_THINKER

#include "camera_pins.h"

const char* ssid = "goldin_lab1";
const char* password = "goldin53743001";
const char* websocket_server_host = "60.250.156.230";
const uint16_t websocket_server_port = 8093;

String serverName = "60.250.156.230";
String serverPath = "/upload.php";     // The default serverPath should be upload.php

const int serverPort = 80;
void startCameraServer();
using namespace websockets;
WebsocketsClient client;

//Set Static IP Address
IPAddress local_IP(192, 168, 50, 83);
//Set Gateway IP Address
IPAddress gateway(192, 168, 50, 254);
IPAddress subnet(255, 255, 255, 0);
const int timerInterval = 30000;    // time between each HTTP POST image
unsigned long previousMillis = 0;   // last time image was sent

void setup() {
  Serial.begin(115200);
  Serial.setDebugOutput(true);
  Serial.println();
  
  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 = 10000000;
  config.pixel_format = PIXFORMAT_JPEG;
  //init with high specs to pre-allocate larger buffers
  if(psramFound()){
    config.frame_size = FRAMESIZE_UXGA;
    config.jpeg_quality = 10;
    config.fb_count = 2;
  } else {
    config.frame_size = FRAMESIZE_SVGA;
    config.jpeg_quality = 12;
    config.fb_count = 1;
  }

  // camera init
  esp_err_t err = esp_camera_init(&config);
  if (err != ESP_OK) {
    Serial.printf("Camera init failed with error 0x%x", err);
    return;
  }
  sendPhoto(); 
  sensor_t * s = esp_camera_sensor_get();
  // initial sensors are flipped vertically and colors are a bit saturated
  if (s->id.PID == OV3660_PID) {
    s->set_vflip(s, 1); // flip it back
    s->set_brightness(s, 2); // up the brightness just a bit
    s->set_saturation(s, -2); // lower the saturation
    s->set_contrast(s, 2);       // -2 to 2
  }
  // drop down frame size for higher initial frame rate
  s->set_framesize(s, FRAMESIZE_QVGA);

#if defined(CAMERA_MODEL_M5STACK_WIDE) || defined(CAMERA_MODEL_M5STACK_ESP32CAM)  
  s->set_hmirror(s, 0);        // 0 = disable , 1 = enable
  s->set_vflip(s, -1);          // 0 = disable , 1 = enable
  s->set_brightness(s, -2);
  s->set_framesize(s, FRAMESIZE_QVGA);
#endif
  
  client.send("Hi Server!");
  //if(!WiFi.config(local_IP, gateway, subnet)) {
  Serial.println("Set IP Failed");
//}
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
  startCameraServer();
  Serial.print("Camera Ready! Use 'http://");
  Serial.print(WiFi.localIP());
  Serial.println("' to connect");

  while(!client.connect(websocket_server_host, websocket_server_port, "/")){
    delay(500);
    Serial.print(".");
  }
  Serial.println("Websocket Connected!");
}

void loop() {
  camera_fb_t *fb = esp_camera_fb_get();  
  if(!fb){
    Serial.println("Camera capture failed");
    esp_camera_fb_return(fb);
    return;
  }

  if(fb->format != PIXFORMAT_JPEG){
    Serial.println("Non-JPEG data not implemented");
    return;
  }

  client.sendBinary((const char*) fb->buf, fb->len);
  esp_camera_fb_return(fb);
  
  if ((WiFi.status()!= WL_CONNECTED)){
    WiFi.reconnect();
    Serial.println("WiFi reconnected");
  }
  while(!client.connect(websocket_server_host, websocket_server_port, "/")){
    delay(500);
    Serial.print(".");
  }
  Serial.println("Websocket Connected!");
  
  //client.poll();


}