//
//    FILE: WebServer.cpp
// PURPOSE: Web Server offering online configuration changes and editing
//
//

#include "WebServer.h"
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <FS.h>
#include <DjConfig.h>
#include <DjBattery.h>

#ifdef ESP8266
extern "C" {
#include "user_interface.h"
}
#endif

const char * const PROGMEM webConfig[] = {"showConfig:boolean:true", "xxx:int:4", "yyy:int:64"};

static Battery battery;
static size_t lastHeap = 0;

void WebServer::handleBattery() {
  int value = battery.getPercentage();
  String output = String(F("{\"battery\":")) + value + F("}");
  server.send(200, contentType_textJson, output);
  logHeap();
}

void WebServer::handleGetClockStatus() {
  String output = String(F("{\"result\":\"ok\","));
  output += "\"clockname\":\"" + clockServer.getName() + "\", \"time\":\"" + clockServer.getClockString() + "\"";
  output += "}";
  server.send(200, contentType_textJson, output);
  logHeap();
}

void WebServer::handleClockActivate() {
  clockServer.activateClock();
  String output = String(F("{\"result\":\"ok\"}"));
  server.send(200, contentType_textJson, output);
  logHeap();
}

void WebServer::handleClockDeactivate() {
  clockServer.deactivateClock();
  String output = String(F("{\"result\":\"ok\"}"));
  server.send(200, contentType_textJson, output);
  logHeap();
}

void WebServer::handleClockStatus() {
  String json = "{";
  json += "\"heap\":" + String(ESP.getFreeHeap());
  json += ",\"battery\":" + String(battery.getPercentage());
  json += ",\"clockserver_name\":\"" + clockServer.getName() + "\"";
  json += ",\"clockserver_clock\":\"" + clockServer.getClockString() + "\"";
  json += ",\"clockserver_hours\":\"" + String(clockServer.getHours()) + "\"";
  json += ",\"clockserver_minutes\":\"" + String(clockServer.getMinutes()) + "\"";
  json += ",\"clockserver_seconds\":\"" + String(clockServer.getSeconds()) + "\"";
  json += ",\"clockserver_speed\":\"" + String(clockServer.getSpeed(),1) + "\"";
  json += ",\"clockserver_text\":\"" + clockServer.getText() + "\"";
  json += ",\"clockserver_active\":\"" + (clockServer.isActive()? String("true"):String("false")) + "\"";
  json += "}";
  server.send(200, contentType_textJson, json);
  json = String();
}

void WebServer::begin() {
  GenericWebServer::begin();
  config.begin("web.cfg", webConfig, sizeof(webConfig)/sizeof(webConfig[0]));

  logHeap();
  server.on("/all", HTTP_GET, [this](){
    String json = "{";
    json += "\"heap\":" + String(ESP.getFreeHeap());
    json += ",\"battery\":" + String(battery.getPercentage());
    json += ",\"clockserver_name\":\"" + clockServer.getName() + "\"";
    json += ",\"clockserver_clock\":\"" + clockServer.getClockString() + "\"";
    json += ",\"clockserver_hours\":\"" + String(clockServer.getHours()) + "\"";
    json += ",\"clockserver_minutes\":\"" + String(clockServer.getMinutes()) + "\"";
    json += ",\"clockserver_seconds\":\"" + String(clockServer.getSeconds()) + "\"";
    json += ",\"clockserver_speed\":\"" + String(clockServer.getSpeed(),1) + "\"";
    json += ",\"clockserver_text\":\"" + clockServer.getText() + "\"";
    json += ",\"clockserver_active\":\"" + (clockServer.isActive()? String("true"):String("false")) + "\"";
    json += "}";
    debug.outln(json);
    server.send(200, contentType_textJson, json);
    json = String();
  });
  server.on("/clock/start", HTTP_GET, [this](){ handleClockActivate(); });
  server.on("/clock/stop", HTTP_GET, [this](){ handleClockDeactivate(); });
  server.on("/clock/status", HTTP_GET, [this](){ handleClockStatus(); });
  server.on("/battery", HTTP_GET, [this](){ handleBattery();});
  server.on("/inline", HTTP_GET, []() {
     server.send(200, contentType_textPlain, F("this works as well"));
  } );
  server.begin();
  debug.outln(F("HTTP server started"), DEBUG_MIN_INFO);
  logHeap();
}

void WebServer::loop() {
  GenericWebServer::loop();
  if (lastHeap > 0) 
  {
    debug.out(lastHeap); debug.outln(F("< heap on recent call"));
    lastHeap = 0;
  }
}