#include "FastLED.h"
#include <SPI.h>
#include <WiFiNINA.h>

#define NUM_LEDS 150
//50
#define DATA_PIN 9
int NUMBER_OF_ANIMATIONS = 7;
int NUMBER_OF_LEDS = 150;
char ssid[] = "Telia-E39815";
char pass[] = "B3C606D8E7";
boolean doing_animation = true;

int current_animation = 0;
int loops_since_http = 0;

int animation_step_time = 0;
int animation_i = 0;
int animation_var_1 = 0;
int animation_table_1[10][8] = {};

long last_animation_millis = millis();
long latest_animation_change = millis();

//typedef enum {STATE_A = 0, STATE_B = 1} State_type;
extern void animation_rainbow(); // forward declaration
extern void animation_running(); // forward declaration
extern void animation_chasing();
extern void animation_off();
extern void animation_random1();
extern void animation_rgb_light();
extern void animation_random2();

void (*animation_table[])() = {animation_off, animation_rainbow, animation_running, animation_chasing, animation_random1, animation_rgb_light, animation_random2};

extern void setup_rainbow(); // forward declaration
extern void setup_random1();
extern void normal_setup();
extern void setup_chosen(int, int, CRGB, boolean, int, int);
extern void setup_random2();

void (*setup_table[])() = {animation_off, setup_rainbow, normal_setup, normal_setup, setup_random1, normal_setup, setup_random2};

CRGB leds[NUM_LEDS];

int status = WL_IDLE_STATUS;

WiFiServer server(80);

void setup() {
  setup_random1();
  // put your setup code here, to run once:
  //Serial.begin(9600);
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }
  Serial.println("Starting");

  FastLED.addLeds<WS2812, DATA_PIN, GRB>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip ); //TM1804 BRG
  FastLED.setBrightness(255);
  FastLED.clear();
  FastLED.show();

  Serial.println("Connected LEDs");
  delay(1000);

  //  for (int i = 15; i >= 10; i--) { //Remove this when small spce left
  //    uint8_t color = i*(NUM_LEDS/10 - 1) + NUM_LEDS/10;
  //    for (int currentLed = 5; currentLed >= 0; currentLed--) {
  //      leds[currentLed + i*5] = CRGB(color, 255-color, 0);
  //      leds[5-currentLed + NUM_LEDS/2-5 + ((NUM_LEDS/10 - i)*5)] = CRGB(color, 255-color, 0);
  //      FastLED.show();
  //      delay(5*i/3 + random(0, 25*i + 1) + 1);
  //    }
  //  }


  //pinMode(DATA_PIN, OUTPUT);
  boolean first_check = true;
  while (status != WL_CONNECTED) {
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(ssid);
    // Connect to WPA/WPA2 network. Change this line if using open or WEP network:
    status = WiFi.begin(ssid, pass);

    // wait 10 seconds for connection:
    if (first_check) {
      delay(1000);
      first_check = false;
    } else {
      delay(10000);
    }
  }
  Serial.println("Connected to WiFi");

  //  for (int i = 10; i >= 5; i--) { //Remove this when small spce left
  //    uint8_t color = i*(NUM_LEDS/10 - 1) + NUM_LEDS/10;
  //    for (int currentLed = 5; currentLed >= 0; currentLed--) {
  //      leds[currentLed + i*5] = CRGB(color, 255-color, 0);
  //      leds[5-currentLed + NUM_LEDS/2-5 + ((NUM_LEDS/10 - i)*5)] = CRGB(color, 255-color, 0);
  //      FastLED.show();
  //      delay(5*i/3 + random(0, 25*i + 1) + 1);
  //    }
  //  }

  Serial.println(WiFi.localIP());
  server.begin();

  delay(1000);
  Serial.println("Ready");

  //  for (int i = 5; i >= 0; i--) { //insert this when small space -> for (int i = (NUM_LEDS / 5) / 2; i >= 0; i--) {
  //    uint8_t color = i*(NUM_LEDS/10 - 1) + NUM_LEDS/10;
  //    for (int currentLed = 5; currentLed >= 0; currentLed--) {
  //      leds[currentLed + i*5] = CRGB(color, 255-color, 0);
  //      leds[5-currentLed + NUM_LEDS/2-5 + ((NUM_LEDS/10 - i)*5)] = CRGB(color, 255-color, 0);
  //      FastLED.show();
  //      delay(5*i/3 + random(0, 25*i + 1) + 1);
  //    }
  //  }
  delay(1000);
  current_animation = 0;
  setup_table[current_animation]();
  Serial.println("Started");
}

void loop() {
  loops_since_http += 1;
  long current_millis = millis();
  if (current_millis - last_animation_millis >= animation_step_time && loops_since_http < 100) {
    if (doing_animation) {
      animation_table[current_animation]();
    } else {
      if (animation_var_1 == 1) {
        animation_fade_help();
      } else {
        delay(5);
      }
    }
    last_animation_millis = current_millis;
  } else {
    loops_since_http = 0;
    //Serial.println("Waiting for animation");
    status=WiFi.status();
    if (status == WL_DISCONNECTED || status == WL_CONNECTION_LOST) {
      while (status != WL_CONNECTED) {
        status = WiFi.begin(ssid, pass);
        delay(1000);
      }
    }
    process_HTTP();
    delay(1);
  }
  // put your main code here, to run repeatedly:
  //Serial.println("Hello");
  //delay(1000);
  //  leds[3] = CRGB::Blue;
  //  leds[0] = CRGB::Red;
  //  leds[1] = CRGB::Green;
  //  leds[49] = CRGB::White;
  //  FastLED.clear();
  //  FastLED.show();
  //  uint8_t delta = 10;
  //  for (uint8_t i = 0; i < 360; i++) {
  //    //leds[i] = CRGB(255-i*4, 255-i*4, 255-i*4);
  //    fill_rainbow(leds, NUM_LEDS, i, delta);
  //    FastLED.show();
  //    delay(10);
  //  }

}

void process_HTTP() {
  WiFiClient client = server.available();
  if (client && millis() - latest_animation_change > 1000) {
    int anim = 0;
    Serial.println("new client");
    // an http request ends with a blank line
    int readingState = 0;
    int leds1 = 0;
    int leds2 = 0;
    uint8_t newR = 0;
    uint8_t newG = 0;
    uint8_t newB = 0;
    int doFade = 0; //Between 0 and 1
    int cycles = 20;
    int cycleLength = 100;
    int currentLoop = 0;
    int setting = 0;
    int value = 0;
    String fullArguments = "";
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        //Serial.write(c);
        if (readingState == 2) { //http://192.168.112.41/z0:49:0:255:0:0:20:1000;
          if (c == ';') {
            client.println("HTTP/1.1 200 OK");
            client.println("Content-Type: text/plain");
            client.println("Connection: close");  // the connection will be closed after completion of the response
            client.println();
            client.println("OK");
            break;
          } else if (c == ':') {
            if (currentLoop == 0) {
              leds1 = max(fullArguments.toInt(), 0);
            } else if (currentLoop == 1) {
              leds2 = min(fullArguments.toInt(), NUM_LEDS - 1);
            } else if (currentLoop == 2) {
              newR = min(max(fullArguments.toInt(), 0), 255);
            } else if (currentLoop == 3) {
              newG = min(max(fullArguments.toInt(), 0), 255);
            } else if (currentLoop == 4) {
              newB = min(max(fullArguments.toInt(), 0), 255);
            } else if (currentLoop == 5) {
              doFade = fullArguments.toInt() % 2;
            } else if (currentLoop == 6) {
              cycles = fullArguments.toInt();
            } else if (currentLoop == 7) {
              cycleLength = min(fullArguments.toInt(), 40);
            }
            fullArguments = "";
            currentLoop++;
          } else {
            fullArguments = fullArguments + c;
          }
        } else if (readingState == 3)  {
          Serial.println("Inside readingState == 3");
          if (c == ';') {
            client.println("HTTP/1.1 200 OK");
            client.println("Content-Type: text/plain");
            client.println("Connection: close");  // the connection will be closed after completion of the response
            client.println();
            client.println("OK");
            break;
          } else if (c == ':') {
            if (currentLoop == 0) {
              setting = fullArguments.toInt();
            } else if (currentLoop == 1) {
              value = fullArguments.toInt();
              Serial.println(value);
            }
            fullArguments = "";
            currentLoop++;
            Serial.println(currentLoop);
          } else {
            fullArguments = fullArguments + c;
            Serial.println(fullArguments);
          }
        } else if (readingState != 0) {
          if (c == 'y') {
            readingState = 3;
            continue;
          } if (c == 'z') {
            readingState = 2;
            continue;
          } else if (c == '(') {
            anim = current_animation - 1;
            if (anim < 0) {
              anim = NUMBER_OF_ANIMATIONS - 1;
            }
          } else if (c == ')') {
            anim = current_animation + 1;
          } else {
            anim = c - 'A';
          }
          if (anim < 0) {
            anim = -anim;
          }
          anim %= NUMBER_OF_ANIMATIONS;
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/plain");
          client.println("Connection: close");  // the connection will be closed after completion of the response
          client.println();
          client.println("OK");
          break;
        }

        if (c == '/') {
          readingState = 1;
        }
      }
    }
    // give the web browser time to receive the data
    delay(300);

    // close the connection:
    client.stop();
    //Serial.println("client disconnected");
    if (readingState == 1) {
      doing_animation = true;
      setup_table[anim]();
      current_animation = anim;
      latest_animation_change = millis();

    } else if (readingState == 3) {
      Serial.println(setting);
      Serial.println(value);
      if (setting == 1) {
        animation_step_time = value;
      } else if (setting == 2) {
        animation_var_1 = value;
      }
    } else if (readingState == 2) {
      doing_animation = false;
      //      Serial.println(leds1);
      //      Serial.println(leds2);
      //      Serial.println(newR);
      //      Serial.println(newG);
      //      Serial.println(newB);
      //      Serial.println(doFade);
      setup_chosen(leds1, leds2, CRGB(newR, newG, newB), (boolean) doFade, cycles, cycleLength);
    }
  }
}

void clear_strip() {
  FastLED.clear();
  FastLED.show();
}

void animation_fade_help() {
  int leds1 = animation_table_1[0][0];
  int leds2 = animation_table_1[0][1];
  int finnishR = animation_table_1[0][2];
  int finnishG = animation_table_1[0][3];
  int finnishB = animation_table_1[0][4];
  int cycles = animation_table_1[0][5];
  int startR = animation_table_1[0][6];
  int startG = animation_table_1[0][7];
  int startB = animation_table_1[1][0];

  uint8_t r = (finnishR - startR) * animation_i / cycles + startR;
  uint8_t g = (finnishG - startG) * animation_i / cycles + startG;
  uint8_t b = (finnishB - startB) * animation_i / cycles + startB;

  for (int i = leds1; i <= leds2; i++) {
    leds[i] = CRGB(r, g, b);
  }
  animation_i++;
  if (animation_i >= cycles) {
    for (int i = leds1; i < leds2; i++) {
      leds[i] = CRGB(finnishR, finnishG, finnishB);
    }
    animation_var_1 = 0;
  }
  FastLED.show();
}

void setup_chosen(int lamps1, int lamps2, CRGB newColor, boolean doFade = false, int cycles = 20, int cycleLength = 100) {
  animation_step_time = cycleLength;
  animation_var_1 = (int) doFade;
  animation_i = 0;
  doing_animation = false;
  if (doFade) {
    animation_table_1[0][0] = lamps1;
    animation_table_1[0][1] = lamps2;
    animation_table_1[0][2] = newColor.r;
    animation_table_1[0][3] = newColor.g;
    animation_table_1[0][4] = newColor.b;
    animation_table_1[0][5] = cycles;
    animation_table_1[0][6] = leds[lamps1].r;
    animation_table_1[0][7] = leds[lamps1].g;
    animation_table_1[1][0] = leds[lamps1].b;
  } else {
    for (int i = lamps1; i <= lamps2; i++) {
      leds[i] = newColor;
    }
    FastLED.show();
  }
}