#include <TinyGPS++.h>
#include <vector>
#include "custom_characters.h"
#include "station_utils.h"
#include "configuration.h"
#include "menu_utils.h"
#include "power_utils.h"
#include "msg_utils.h"
#include "display.h"
#include "utils.h"


extern int                  menuDisplay;
extern Beacon               *currentBeacon;
extern Configuration        Config;
extern TinyGPSPlus          gps;
extern PowerManagement      powerManagement;
extern std::vector<String>  loadedAPRSMessages;
extern int                  messagesIterator;
extern uint32_t             menuTime;
extern bool                 symbolAvailable;

namespace MENU_Utils {

    void showOnScreen() {
        uint32_t lastMenuTime = millis() - menuTime;
        if (!(menuDisplay==0) && !(menuDisplay==20) && !(menuDisplay==21) && lastMenuTime > 30*1000) {
            menuDisplay = 0;
        }
        switch (menuDisplay) { // Graphic Menu is in here!!!!
            case 1:
                show_display("__MENU_1__", "", "1P -> Read Msg (" + String(MSG_Utils::getNumAPRSMessages()) + ")", "LP -> Delete Msg", "2P -> Menu 2");
                break;
            case 2:
                show_display("__MENU_2__", "", "1P -> Weather Report", "LP -> Listen Trackers", "2P -> Menu 3");
                break;
            case 3:
                show_display("__MENU_3__", "", "1P -> NOTHING YET", "LP -> Display EcoMode", "2P -> (Back) Tracking");
                break;

            case 10:            // Display Received/Saved APRS Messages
                {
                    String msgSender      = loadedAPRSMessages[messagesIterator].substring(0,loadedAPRSMessages[messagesIterator].indexOf(","));
                    String restOfMessage  = loadedAPRSMessages[messagesIterator].substring(loadedAPRSMessages[messagesIterator].indexOf(",")+1);
                    String msgGate        = restOfMessage.substring(0,restOfMessage.indexOf(","));
                    String msgText        = restOfMessage.substring(restOfMessage.indexOf(",")+1);
                    show_display("MSG_APRS>", msgSender + "-->" + msgGate, msgText, "", "", "               Next>");
                }
                break;

            case 20:            // Display Heared Tracker/Stations
                show_display("LISTENING>", STATION_Utils::getFirstNearTracker(), STATION_Utils::getSecondNearTracker(), STATION_Utils::getThirdNearTracker(), STATION_Utils::getFourthNearTracker(), "<Back");
                break;
            case 21:
                // waiting for Weather Report
                break;

            case 0:       ///////////// MAIN MENU //////////////
                String hdopState, firstRowMainMenu, secondRowMainMenu, thirdRowMainMenu, fourthRowMainMenu, fifthRowMainMenu, sixthRowMainMenu;

                firstRowMainMenu = currentBeacon->callsign;
                if (Config.showSymbolOnScreen) {
                    for (int j=firstRowMainMenu.length();j<9;j++) {
                        firstRowMainMenu += " ";
                    }
                    if (!symbolAvailable) {
                        firstRowMainMenu += currentBeacon->symbol;
                    }
                }
                
                const auto time_now = now();
                secondRowMainMenu = utils::createDateString(time_now) + "   " + utils::createTimeString(time_now);
                
                if (time_now % 10 < 5) {
                    thirdRowMainMenu = String(gps.location.lat(), 4) + " " + String(gps.location.lng(), 4);
                }
                else {
                    thirdRowMainMenu = String(utils::getMaidenheadLocator(gps.location.lat(), gps.location.lng(), 8));
                }

                for(int i = thirdRowMainMenu.length(); i < 18; i++) {
                    thirdRowMainMenu += " ";
                }

                if (gps.hdop.hdop() > 5) {
                    hdopState = "X";
                } else if (gps.hdop.hdop() > 2 && gps.hdop.hdop() < 5) {
                    hdopState = "-";
                } else if (gps.hdop.hdop() <= 2) {
                    hdopState = "+";
                }
        
                if (gps.satellites.value() > 9) { 
                    thirdRowMainMenu += String(gps.satellites.value()) + hdopState;
                } else {
                    thirdRowMainMenu += " " + String(gps.satellites.value()) + hdopState;
                }
                
                String fourthRowAlt = String(gps.altitude.meters(),0);
                fourthRowAlt.trim();
                for (int a=fourthRowAlt.length();a<4;a++) {
                    fourthRowAlt = "0" + fourthRowAlt;
                }
                String fourthRowSpeed = String(gps.speed.kmph(),0);
                fourthRowSpeed.trim();
                for (int b=fourthRowSpeed.length(); b<3;b++) {
                    fourthRowSpeed = " " + fourthRowSpeed;
                }
                String fourthRowCourse = String(gps.course.deg(),0);
                if (fourthRowSpeed == "  0") {
                    fourthRowCourse = "---";
                } else {
                    fourthRowCourse.trim();
                    for(int c=fourthRowCourse.length();c<3;c++) {
                        fourthRowCourse = "0" + fourthRowCourse;
                    }
                }
                fourthRowMainMenu = "A=" + fourthRowAlt + "m  " + fourthRowSpeed + "km/h  " + fourthRowCourse;
                if (MSG_Utils::getNumAPRSMessages() > 0){
                    fourthRowMainMenu = "*** MESSAGES: " + String(MSG_Utils::getNumAPRSMessages()) + " ***";
                }
                        
                fifthRowMainMenu  = "LAST Rx = " + MSG_Utils::getLastHeardTracker();
                    
                if (powerManagement.getBatteryInfoIsConnected()) {
                    String batteryVoltage = powerManagement.getBatteryInfoVoltage();
                    String batteryChargeCurrent = powerManagement.getBatteryInfoCurrent();
                    #if defined(TTGO_T_Beam_V1_0) || defined(TTGO_T_LORA_V2_1)
                    if (batteryChargeCurrent.toInt() == 0) {
                        sixthRowMainMenu = "Battery Charged " + batteryVoltage + "V";
                    } else if (batteryChargeCurrent.toInt() > 0) {
                        sixthRowMainMenu = "Bat: " + batteryVoltage + "V (charging)";
                    } else {
                        sixthRowMainMenu = "Battery " + batteryVoltage + "V " + batteryChargeCurrent + "mA";
                    }
                    #endif
                    #ifdef TTGO_T_Beam_V1_2
                        batteryVoltage = batteryVoltage.toFloat()/1000;
                        if (powerManagement.isChargeing() && batteryChargeCurrent!="100") { 
                            sixthRowMainMenu = "Bat: " + String(batteryVoltage) + "V (charging)";
                        } else if (!powerManagement.isChargeing() && batteryChargeCurrent=="100") {
                            sixthRowMainMenu = "Battery Charged " + String(batteryVoltage) + "V";
                        } else {
                            sixthRowMainMenu = "Battery  " + String(batteryVoltage) + "V   " + batteryChargeCurrent + "%";
                        }
                    #endif
                } else {
                    sixthRowMainMenu = "No Battery Connected" ;
                }
                show_display(String(firstRowMainMenu),
                            String(secondRowMainMenu),
                            String(thirdRowMainMenu),
                            String(fourthRowMainMenu),
                            String(fifthRowMainMenu),
                            String(sixthRowMainMenu));
                break;
        }

    }

}