
#include "esp_wifi.h"
#include "esp_camera.h"
#include <WiFi.h>
#include "esp_timer.h"
#include "img_converters.h"
#include "Arduino.h"
#include "fb_gfx.h"
  #include "soc/soc.h"             // disable brownout problems
  #include "soc/rtc_cntl_reg.h"    // disable brownout problems
  #include "esp_http_server.h"

const char* ssid = "UPCF4821BC";
const char* password = "Gherla1956";

#include "FS.h"
#include "SD_MMC.h"
#include "esp_camera.h"
#include <EEPROM.h>  

  #define PART_BOUNDARY "123456789000000000000987654321"

  #define CAMERA_MODEL_AI_THINKER
  //#define CAMERA_MODEL_M5STACK_PSRAM
  //#define CAMERA_MODEL_M5STACK_WITHOUT_PSRAM
  //#define CAMERA_MODEL_M5STACK_PSRAM_B
  //#define CAMERA_MODEL_WROVER_KIT

  #if defined(CAMERA_MODEL_WROVER_KIT)
  #define PWDN_GPIO_NUM    -1
  #define RESET_GPIO_NUM   -1
  #define XCLK_GPIO_NUM    21
  #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      19
  #define Y4_GPIO_NUM      18
  #define Y3_GPIO_NUM       5
  #define Y2_GPIO_NUM       4
  #define VSYNC_GPIO_NUM   25
  #define HREF_GPIO_NUM    23
  #define PCLK_GPIO_NUM    22

  #elif defined(CAMERA_MODEL_M5STACK_PSRAM)
  #define PWDN_GPIO_NUM     -1
  #define RESET_GPIO_NUM    15
  #define XCLK_GPIO_NUM     27
  #define SIOD_GPIO_NUM     25
  #define SIOC_GPIO_NUM     23
  
  #define Y9_GPIO_NUM       19
  #define Y8_GPIO_NUM       36
  #define Y7_GPIO_NUM       18
  #define Y6_GPIO_NUM       39
  #define Y5_GPIO_NUM        5
  #define Y4_GPIO_NUM       34
  #define Y3_GPIO_NUM       35
  #define Y2_GPIO_NUM       32
  #define VSYNC_GPIO_NUM    22
  #define HREF_GPIO_NUM     26
  #define PCLK_GPIO_NUM     21

  #elif defined(CAMERA_MODEL_M5STACK_WITHOUT_PSRAM)
  #define PWDN_GPIO_NUM     -1
  #define RESET_GPIO_NUM    15
  #define XCLK_GPIO_NUM     27
  #define SIOD_GPIO_NUM     25
  #define SIOC_GPIO_NUM     23
  
  #define Y9_GPIO_NUM       19
  #define Y8_GPIO_NUM       36
  #define Y7_GPIO_NUM       18
  #define Y6_GPIO_NUM       39
  #define Y5_GPIO_NUM        5
  #define Y4_GPIO_NUM       34
  #define Y3_GPIO_NUM       35
  #define Y2_GPIO_NUM       17
  #define VSYNC_GPIO_NUM    22
  #define HREF_GPIO_NUM     26
  #define PCLK_GPIO_NUM     21

  #elif defined(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

  #elif defined(CAMERA_MODEL_M5STACK_PSRAM_B)
  #define PWDN_GPIO_NUM     -1
  #define RESET_GPIO_NUM    15
  #define XCLK_GPIO_NUM     27
  #define SIOD_GPIO_NUM     22
  #define SIOC_GPIO_NUM     23
  
  #define Y9_GPIO_NUM       19
  #define Y8_GPIO_NUM       36
  #define Y7_GPIO_NUM       18
  #define Y6_GPIO_NUM       39
  #define Y5_GPIO_NUM        5
  #define Y4_GPIO_NUM       34
  #define Y3_GPIO_NUM       35
  #define Y2_GPIO_NUM       32
  #define VSYNC_GPIO_NUM    25
  #define HREF_GPIO_NUM     26
  #define PCLK_GPIO_NUM     21

  #else
  #error "Camera model not selected"
  #endif

  #define EEPROM_SIZE 1
  int pictureNumber = 0;

  #define flash     4

  static const char* _STREAM_CONTENT_TYPE = "multipart/x-mixed-replace;boundary=" PART_BOUNDARY;
  static const char* _STREAM_BOUNDARY = "\r\n--" PART_BOUNDARY "\r\n";
  static const char* _STREAM_PART = "Content-Type: image/jpeg\r\nContent-Length: %u\r\n\r\n";

  httpd_handle_t camera_httpd = NULL;
  httpd_handle_t stream_httpd = NULL;

  static const char PROGMEM INDEX_HTML[] = R"rawliteral(
  <html>
  <head>
    <title>ESP32-CAM DC</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style>
      body { font-family: Arial; text-align: center; margin:0px auto; padding-top: 30px;}
      table { margin-left: auto; margin-right: auto; }
      td { padding: 8 px; }
      .button {
      background-color: #2f4468;
      border: none;
      color: white;
      padding: 10px 20px;
      text-align: center;
      text-decoration: none;
      display: inline-block;
      font-size: 18px;
      margin: 6px 3px;
      cursor: pointer;
      -webkit-touch-callout: none;
      -webkit-user-select: none;
      -khtml-user-select: none;
      -moz-user-select: none;
       -ms-user-select: none;
       user-select: none;
       -webkit-tap-highlight-color: rgba(0,0,0,0);
      }
      img {  width: auto ;
        max-width: 100% ;
        height: auto ; 
      }
    </style>
    </head>
    <body>
    <h1>ESP32-CAM foto</h1>
    <img src="" id="photo" >

    <table>
      <tr><td colspan="3" align="center"><button class="button"
      onmousefoto="toggleCheckbox('foto');
      " ontouchstart="toggleCheckbox('foto');
      ">Photo</button></td></tr>
      
        
      </table>
      <script>

      function toggleCheckbox(x) {
     var xhr = new XMLHttpRequest();
     xhr.open("GET", "/action?go=" + x, true);
     xhr.send();
          }
    window.onload = document.getElementById("photo").src = window.location.href.slice(0, -1) + ":81/stream";
    </script>
    </body>
    </html>
    )rawliteral";

    static esp_err_t index_handler(httpd_req_t *req){
    httpd_resp_set_type(req, "text/html");
    return httpd_resp_send(req, (const char *)INDEX_HTML, strlen(INDEX_HTML));
    }


  static esp_err_t stream_handler(httpd_req_t *req){
  camera_fb_t * fb = NULL;
  esp_err_t res = ESP_OK;
  size_t _jpg_buf_len = 0;
  uint8_t * _jpg_buf = NULL;
  char * part_buf[64];

  res = httpd_resp_set_type(req, _STREAM_CONTENT_TYPE);
  if(res != ESP_OK){
    return res;
  }

  while(true){    
    fb = esp_camera_fb_get();
    if (!fb) {
      Serial.println("Camera capture failed");
      res = ESP_FAIL;
    } else {
      if(fb->width > 400){
        if(fb->format != PIXFORMAT_JPEG){
          bool jpeg_converted = frame2jpg(fb, 80, &_jpg_buf, &_jpg_buf_len);
          esp_camera_fb_return(fb);
          fb = NULL;
          if(!jpeg_converted){
            Serial.println("JPEG compression failed");
            res = ESP_FAIL;
          }
        } else {
          _jpg_buf_len = fb->len;
          _jpg_buf = fb->buf;
        }
      }
    }
    if(res == ESP_OK){
      size_t hlen = snprintf((char *)part_buf, 64, _STREAM_PART, _jpg_buf_len);
      res = httpd_resp_send_chunk(req, (const char *)part_buf, hlen);
    }
    if(res == ESP_OK){
      res = httpd_resp_send_chunk(req, (const char *)_jpg_buf, _jpg_buf_len);
    }
    if(res == ESP_OK){
      res = httpd_resp_send_chunk(req, _STREAM_BOUNDARY, strlen(_STREAM_BOUNDARY));
    }
    if(fb){
      esp_camera_fb_return(fb);
      fb = NULL;
      _jpg_buf = NULL;
    } else if(_jpg_buf){
      free(_jpg_buf);
      _jpg_buf = NULL;
    }
    if(res != ESP_OK){
      break;
    }
    //Serial.printf("MJPG: %uB\n",(uint32_t)(_jpg_buf_len));
    }
  return res;
    }
   
    static esp_err_t cmd_handler(httpd_req_t *req){
     
    char*  buf;
    size_t buf_len;
    char variable[32] = {0,};
  
    buf_len = httpd_req_get_url_query_len(req) + 1;
    if (buf_len > 1) {
    buf = (char*)malloc(buf_len);
    if(!buf){
      httpd_resp_send_500(req);
      return ESP_FAIL;
            }
    if (httpd_req_get_url_query_str(req, buf, buf_len) == ESP_OK) {
      if (httpd_query_key_value(buf, "go", variable, sizeof(variable)) == ESP_OK) {
      } else {
        free(buf);
        httpd_resp_send_404(req);
        return ESP_FAIL;
      }
    } else {
      free(buf);
      httpd_resp_send_404(req);
      return ESP_FAIL;
    }
    free(buf);
    } else {
    httpd_resp_send_404(req);
    return ESP_FAIL;
    }
    int res = 0;

  
    if(!strcmp(variable, "foto")) {  
    //Serial.println("foto");   
  takefoto();
      }
    
    else {
    res = -1;
          }

    if(res){
    return httpd_resp_send_500(req);
    }

    httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
    return httpd_resp_send(req, NULL, 0);
    }

    void startCameraServer(){
      
    httpd_config_t config = HTTPD_DEFAULT_CONFIG();
    httpd_uri_t index_uri = {
    .uri       = "/",
    .method    = HTTP_GET,
    .handler   = index_handler,
    .user_ctx  = NULL
    };

    httpd_uri_t cmd_uri = {
    .uri       = "/action",
    .method    = HTTP_GET,
    .handler   = cmd_handler,
    .user_ctx  = NULL
          };
    httpd_uri_t stream_uri = {
    .uri       = "/stream",
    .method    = HTTP_GET,
    .handler   = stream_handler,
    .user_ctx  = NULL
    };
    if (httpd_start(&camera_httpd, &config) == ESP_OK) {
    httpd_register_uri_handler(camera_httpd, &index_uri);
    httpd_register_uri_handler(camera_httpd, &cmd_uri);
    }
    config.server_port += 1;
    config.ctrl_port += 1;
    if (httpd_start(&stream_httpd, &config) == ESP_OK) {
    httpd_register_uri_handler(stream_httpd, &stream_uri);
      }
      }


    void setup() {
    WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); //disable brownout detector
 
    
    pinMode(flash,OUTPUT);
  
    Serial.begin(115200);
    Serial.setDebugOutput(false);
  
  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; 
  
    if(psramFound()){
    config.frame_size = FRAMESIZE_VGA;
    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;
      }
  
WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");

  Serial.print("Camera Ready! Use 'http://");
  Serial.print(WiFi.localIP());
  Serial.println("' to connect");
  startCameraServer();
      }

//foto cu SD

static esp_err_t get_image(fs::FS &fs, const char * path) {
    // Variable definitions for camera frame buffer
    camera_fb_t * fb = NULL;
    int64_t fr_start = esp_timer_get_time();

    // Get the contents of the camera frame buffer
    fb = esp_camera_fb_get();
    if (!fb) {
        Serial.println("Camera capture failed");
        return ESP_FAIL;
    }

    // Save image to file
    size_t fb_len = 0;
    fb_len = fb->len;
    File file = fs.open(path, FILE_WRITE);
    if(!file){
      Serial.println("Failed to open file in writing mode");
    } else {
      file.write(fb->buf, fb->len); // payload (image), payload length
      Serial.printf("Saved file to path: %s\n", path);
    }
    file.close();

    // Release the camera frame buffer
    esp_camera_fb_return(fb);
    int64_t fr_end = esp_timer_get_time();
    Serial.printf("JPG: %uB %ums\n", (uint32_t)(fb_len), (uint32_t)((fr_end - fr_start)/1000));
    return ESP_OK;
}
// foto cu SD
      void takefoto() {

  SD_MMC.begin();
  EEPROM.begin(EEPROM_SIZE);
  pictureNumber = EEPROM.read(0) + 1;

  // Call function to capture the image and save it as a file
  String path = "/picture" + String(pictureNumber) + ".jpg";
  if(get_image(SD_MMC, path.c_str()) != ESP_OK ) {
    //Serial.println("Failed to capture picture");
  } 

  else{
    Serial.println("Captured picture");
    EEPROM.write(0, pictureNumber);
    EEPROM.commit();
  }
  }

 
    void loop() {
      }
