#include <WebServer.h>
#include <cmath>
#include "server.h"
#include "mode/Mode.h"
#include "mode.h"
#include "display.h"
#include "config.h"

WebServer server(80);

void web_index();

void web_setMode();

void web_brighter();

void web_darker();

void web_faster();

void web_slower();

void web_fps_on();

void web_fps_off();

void redirect();

void server_setup() {
  server.on("/", web_index);
  server.on("/mode", web_setMode);
  server.on("/brighter", web_brighter);
  server.on("/darker", web_darker);
  server.on("/faster", web_faster);
  server.on("/slower", web_slower);
  server.on("/fps/on", web_fps_on);
  server.on("/fps/off", web_fps_off);
  server.begin();
}

void server_loop() {
  server.handleClient();
}

void web_index() {
  server.setContentLength(CONTENT_LENGTH_UNKNOWN);
  server.send(200, "text/html", "");
  server.sendContent(R"(<meta http-equiv="Cache-Control" content="store, no-cache, must-revalidate, post-check=0, pre-check=0" />)");
  server.sendContent(R"(<meta http-equiv="Pragma" content="no-cache" />)");
  server.sendContent(R"(<meta http-equiv="Expires" content="Sun, 1 Jan 1999 00:00:00 GMT" />)");

  server.sendContent(R"(<a href="/mode?mode=0">NONE</a><br>)");
  server.sendContent(R"(<a href="/mode?mode=1">BORDER</a><br>)");
  server.sendContent(R"(<a href="/mode?mode=2">CLOCK</a><br>)");
  server.sendContent(R"(<a href="/mode?mode=3">GAME_OF_LIFE_BLACK_WHITE</a><br>)");
  server.sendContent(R"(<a href="/mode?mode=4">GAME_OF_LIFE_GRAYSCALE</a><br>)");
  server.sendContent(R"(<a href="/mode?mode=5">GAME_OF_LIFE_COLOR_FADE</a><br>)");
  server.sendContent(R"(<a href="/mode?mode=6">GAME_OF_LIFE_RANDOM_COLOR</a><br>)");
  server.sendContent(R"(<a href="/mode?mode=7">PONG</a><br>)");
  server.sendContent(R"(<a href="/mode?mode=8">SPACE_INVADERS</a><br>)");
  server.sendContent(R"(<a href="/mode?mode=9">NEW_YEAR</a><br>)");

  server.sendContent(R"(Helligkeit: <a href="/brighter">+</a> / <a href="/darker">-</a><br>)");
  server.sendContent(R"(Geschwindigkeit: <a href="/faster">+</a> / <a href="/slower">-</a><br>)");
  server.sendContent(R"(FPS: <a href="/fps/on">EIN</a> / <a href="/fps/off">AUS</a><br>)");
  server.client().flush();
}

void web_setMode() {
  if (!server.hasArg("mode")) {
    server.send(400, "text/plain", "Missing 'mode'");
    return;
  }
  double value = strtod(server.arg("mode").c_str(), nullptr);
  if (isnan(value)) {
    server.send(400, "text/plain", "'mode' not a number");
    return;
  }
  setMode((ModeId) value);
  redirect();
}

void web_brighter() {
  setBrightness(display.getBrightness() + 10);
  redirect();
}

void web_darker() {
  setBrightness(display.getBrightness() - 10);
  redirect();
}

void web_faster() {
  setSpeed(config.speed * 1.1);
  redirect();
}

void web_slower() {
  setSpeed(config.speed / 1.1);
  redirect();
}

void web_fps_on() {
  display.fpsShow = true;
  redirect();
}

void web_fps_off() {
  display.fpsShow = false;
  redirect();
}

void redirect() {
  server.sendHeader("location", "/");
  server.send(302, "text/plain", "ok");
}