#include "esp_camera.h"
#include <WiFi.h>
#include <DNSServer.h>
#include <WebServer.h>
#include <WiFiManager.h>
#include <HTTPClient.h>
#define CAMERA_MODEL_AI_THINKER
#include "camera_pins.h"

void startCameraServer();

#define LINE_ACCESS_TOKEN "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
#define BOUNDARY "CHUNCHUNNOTICE20220327"
HTTPClient http;
int32_t linePost( camera_fb_t *fb ) {
  String RequestURL="https://notify-api.line.me/api/notify";
  http.begin(RequestURL);
  if (fb)
  {
    String stConType ="multipart/form-data; boundary=";
    stConType+=BOUNDARY;
    http.addHeader("Content-Type", stConType);
    String authorization = "Bearer ";
    authorization += LINE_ACCESS_TOKEN;
    http.addHeader("Authorization", authorization);

    String stMHead="--";
    stMHead += BOUNDARY;
    stMHead += "\r\n";

    stMHead += "Content-Disposition: form-data; name=\"message\";\r\n\r\n";
    stMHead += "Camera: http://";
    stMHead += WiFi.localIP().toString();
    stMHead += "\r\n";

    stMHead += "--";
    stMHead += BOUNDARY;
    stMHead += "\r\n";
    stMHead += "Content-Disposition: form-data; name=\"imageFile\"; filename=\"./a.jpg\" \r\n";
    stMHead += "Content-Type: image/jpeg \r\n";

    stMHead += "\r\n";
    uint32_t iNumMHead = stMHead.length();

    String stMTail="\r\n--";
    stMTail += BOUNDARY;
    stMTail += "--\r\n\r\n";
    uint32_t iNumMTail = stMTail.length();

    uint32_t iNumTotalLen = iNumMHead + iNumMTail + fb->len;

    uint8_t *uiB = (uint8_t *)malloc(sizeof(uint8_t)*iNumTotalLen);

    for(int uilp=0;uilp<iNumMHead;uilp++)
      uiB[0+uilp]=stMHead[uilp];
    for(int uilp=0;uilp<fb->len;uilp++)
      uiB[iNumMHead+uilp]=(fb->buf)[uilp];
    for(int uilp=0;uilp<iNumMTail;uilp++)
      uiB[iNumMHead+fb->len+uilp]=stMTail[uilp];

    int32_t httpResponseCode = (int32_t)http.POST(uiB,iNumTotalLen);
    http.end();
    free(uiB);
    Serial.print("Response Code:");
    Serial.println(httpResponseCode);
    Serial.print("Response Body:");
    Serial.println(http.getString());
    return (httpResponseCode);
  }
}

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


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 = 20000000;
  config.pixel_format = PIXFORMAT_JPEG;

  // if PSRAM IC present, init with UXGA resolution and higher JPEG quality
  //                      for larger pre-allocated frame buffer.
  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;
  }

#if defined(CAMERA_MODEL_ESP_EYE)
  pinMode(13, INPUT_PULLUP);
  pinMode(14, INPUT_PULLUP);
#endif

  // 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;
  }

  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, 1); // up the brightness just a bit
    s->set_saturation(s, -2); // lower the saturation
  }
  // 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_vflip(s, 1);
  s->set_hmirror(s, 1);
#endif
  WiFiManager wifiManager;
  wifiManager.setConfigPortalTimeout(30);
  if (!wifiManager.autoConnect("BirdWatcher","hogehoge")) {
    Serial.println("failed to connect and hit timeout");
  }
  takePhoto();
  startCameraServer();

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

void loop() {
  // put your main code here, to run repeatedly:
  delay(10000);
}

 /*
  PowerController for tiny 202
 */

bool keepPassive(int digiin,int interval){
  for(int i=0; i<interval; i++)
  {
    if (digitalRead(digiin) == HIGH) return false;
    delay(1000);
  }
  return true;
}

void setup() {
  pinMode(0, OUTPUT); // POWER FLAG
  pinMode(1, INPUT); // POWER BUTTON
  digitalWrite(0, HIGH);
}

void loop() {
  if ( digitalRead(1)==LOW && keepPassive(1, 30) ) digitalWrite(0, LOW);
}