/* Copyright (C) 2012 Kristian Lauszus, TKJ Electronics. All rights reserved.

 This software may be distributed and modified under the terms of the GNU
 General Public License version 2 (GPL2) as published by the Free Software
 Foundation and appearing in the file GPL2.TXT included in the packaging of
 this file. Please note that GPL2 Section 2[b] requires that all works based
 on this software must also be made publicly available under the terms of
 the GPL2 ("Copyleft").

 Contact information
 -------------------

 Kristian Lauszus, TKJ Electronics
 Web      :  http://www.tkjelectronics.com
 e-mail   :  kristianl@tkjelectronics.com

 getBatteryLevel and checkStatus functions made by timstamp.co.uk found using BusHound from Perisoft.net
 */

#ifndef _xboxrecv_h_
#define _xboxrecv_h_

#include "Usb.h"
#include "xboxEnums.h"

/* Data Xbox 360 taken from descriptors */
#define EP_MAXPKTSIZE       32 // max size for data via USB

/* Names we give to the 9 Xbox360 pipes */
#define XBOX_CONTROL_PIPE   0
#define XBOX_INPUT_PIPE_1   1
#define XBOX_OUTPUT_PIPE_1  2
#define XBOX_INPUT_PIPE_2   3
#define XBOX_OUTPUT_PIPE_2  4
#define XBOX_INPUT_PIPE_3   5
#define XBOX_OUTPUT_PIPE_3  6
#define XBOX_INPUT_PIPE_4   7
#define XBOX_OUTPUT_PIPE_4  8

// PID and VID of the different devices
#define XBOX_VID                                0x045E  // Microsoft Corporation
#define MADCATZ_VID                             0x1BAD  // For unofficial Mad Catz receivers
#define JOYTECH_VID                             0x162E  // For unofficial Joytech controllers

#define XBOX_WIRELESS_RECEIVER_PID_1            0x0719  // Microsoft Wireless Gaming Receiver
#define XBOX_WIRELESS_RECEIVER_PID_2            0x02A9  // Microsoft Wireless Gaming Receiver
#define XBOX_WIRELESS_RECEIVER_THIRD_PARTY_PID  0x0291  // Third party Wireless Gaming Receiver

#define XBOX_MAX_ENDPOINTS   9

/**
 * This class implements support for a Xbox Wireless receiver.
 *
 * Up to four controllers can connect to one receiver, if more is needed one can use a second receiver via the USBHub class.
 */
class XBOXRECV : public USBDeviceConfig {
public:
        /**
         * Constructor for the XBOXRECV class.
         * @param  pUsb   Pointer to USB class instance.
         */
        XBOXRECV(USB *pUsb);

        /** @name USBDeviceConfig implementation */
        /**
         * Address assignment and basic initilization is done here.
         * @param  parent   Hub number.
         * @param  port     Port number on the hub.
         * @param  lowspeed Speed of the device.
         * @return          0 on success.
         */
        uint8_t ConfigureDevice(uint8_t parent, uint8_t port, bool lowspeed);
        /**
         * Initialize the Xbox wireless receiver.
         * @param  parent   Hub number.
         * @param  port     Port number on the hub.
         * @param  lowspeed Speed of the device.
         * @return          0 on success.
         */
        uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
        /**
         * Release the USB device.
         * @return 0 on success.
         */
        uint8_t Release();
        /**
         * Poll the USB Input endpoins and run the state machines.
         * @return 0 on success.
         */
        uint8_t Poll();

        /**
         * Get the device address.
         * @return The device address.
         */
        virtual uint8_t GetAddress() {
                return bAddress;
        };

        /**
         * Used to check if the controller has been initialized.
         * @return True if it's ready.
         */
        virtual bool isReady() {
                return bPollEnable;
        };

        /**
         * Used by the USB core to check what this driver support.
         * @param  vid The device's VID.
         * @param  pid The device's PID.
         * @return     Returns true if the device's VID and PID matches this driver.
         */
        virtual bool VIDPIDOK(uint16_t vid, uint16_t pid) {
                return ((vid == XBOX_VID || vid == MADCATZ_VID || vid == JOYTECH_VID) && (pid == XBOX_WIRELESS_RECEIVER_PID_1 || pid == XBOX_WIRELESS_RECEIVER_PID_2 || pid == XBOX_WIRELESS_RECEIVER_THIRD_PARTY_PID));
        };
        /**@}*/

        /** @name Xbox Controller functions */
        /**
         * getButtonPress(uint8_t controller, ButtonEnum b) will return true as long as the button is held down.
         *
         * While getButtonClick(uint8_t controller, ButtonEnum b) will only return it once.
         *
         * So you instance if you need to increase a variable once you would use getButtonClick(uint8_t controller, ButtonEnum b),
         * but if you need to drive a robot forward you would use getButtonPress(uint8_t controller, ButtonEnum b).
         * @param  b          ::ButtonEnum to read.
         * @param  controller The controller to read from. Default to 0.
         * @return            getButtonClick(uint8_t controller, ButtonEnum b) will return a bool, while getButtonPress(uint8_t controller, ButtonEnum b) will return a byte if reading ::L2 or ::R2.
         */
        uint8_t getButtonPress(ButtonEnum b, uint8_t controller = 0);
        bool getButtonClick(ButtonEnum b, uint8_t controller = 0);
        /**@}*/

        /** @name Xbox Controller functions */
        /**
         * Return the analog value from the joysticks on the controller.
         * @param  a          Either ::LeftHatX, ::LeftHatY, ::RightHatX or ::RightHatY.
         * @param  controller The controller to read from. Default to 0.
         * @return            Returns a signed 16-bit integer.
         */
        int16_t getAnalogHat(AnalogHatEnum a, uint8_t controller = 0);

        /**
         * Used to disconnect any of the controllers.
         * @param controller The controller to disconnect. Default to 0.
         */
        void disconnect(uint8_t controller = 0);

        /**
         * Turn rumble off and all the LEDs on the specific controller.
         * @param  controller The controller to write to. Default to 0.
         */
        void setAllOff(uint8_t controller = 0) {
                setRumbleOn(0, 0, controller);
                setLedOff(controller);
        };

        /**
         * Turn rumble off the specific controller.
         * @param  controller The controller to write to. Default to 0.
         */
        void setRumbleOff(uint8_t controller = 0) {
                setRumbleOn(0, 0, controller);
        };
        /**
         * Turn rumble on.
         * @param lValue     Left motor (big weight) inside the controller.
         * @param rValue     Right motor (small weight) inside the controller.
         * @param controller The controller to write to. Default to 0.
         */
        void setRumbleOn(uint8_t lValue, uint8_t rValue, uint8_t controller = 0);
        /**
         * Set LED value. Without using the ::LEDEnum or ::LEDModeEnum.
         * @param value      See:
         * setLedOff(uint8_t controller), setLedOn(uint8_t controller, LED l),
         * setLedBlink(uint8_t controller, LED l), and setLedMode(uint8_t controller, LEDMode lm).
         * @param controller The controller to write to. Default to 0.
         */
        void setLedRaw(uint8_t value, uint8_t controller = 0);

        /**
         * Turn all LEDs off the specific controller.
         * @param controller The controller to write to. Default to 0.
         */
        void setLedOff(uint8_t controller = 0) {
                setLedRaw(0, controller);
        };
        /**
         * Turn on a LED by using ::LEDEnum.
         * @param l          ::OFF, ::LED1, ::LED2, ::LED3 and ::LED4 is supported by the Xbox controller.
         * @param controller The controller to write to. Default to 0.
         */
        void setLedOn(LEDEnum l, uint8_t controller = 0);
        /**
         * Turn on a LED by using ::LEDEnum.
         * @param l          ::ALL, ::LED1, ::LED2, ::LED3 and ::LED4 is supported by the Xbox controller.
         * @param controller The controller to write to. Default to 0.
         */
        void setLedBlink(LEDEnum l, uint8_t controller = 0);
        /**
         * Used to set special LED modes supported by the Xbox controller.
         * @param lm         See ::LEDModeEnum.
         * @param controller The controller to write to. Default to 0.
         */
        void setLedMode(LEDModeEnum lm, uint8_t controller = 0);
        /**
         * Used to get the battery level from the controller.
         * @param  controller The controller to read from. Default to 0.
         * @return            Returns the battery level as an integer in the range of 0-3.
         */
        uint8_t getBatteryLevel(uint8_t controller = 0);
        /**
         * Used to check if a button has changed.
         * @param  controller The controller to read from. Default to 0.
         * @return            True if a button has changed.
         */
        bool buttonChanged(uint8_t controller = 0);

        /**
         * Used to call your own function when the controller is successfully initialized.
         * @param funcOnInit Function to call.
         */
        void attachOnInit(void (*funcOnInit)(void)) {
                pFuncOnInit = funcOnInit;
        };
        /**@}*/

        /** True if a wireless receiver is connected. */
        bool XboxReceiverConnected;
        /** Variable used to indicate if the XBOX 360 controller is successfully connected. */
        uint8_t Xbox360Connected[4];

protected:
        /** Pointer to USB class instance. */
        USB *pUsb;
        /** Device address. */
        uint8_t bAddress;
        /** Endpoint info structure. */
        EpInfo epInfo[XBOX_MAX_ENDPOINTS];

private:
        /**
         * Called when the controller is successfully initialized.
         * Use attachOnInit(void (*funcOnInit)(void)) to call your own function.
         * This is useful for instance if you want to set the LEDs in a specific way.
         * @param controller The initialized controller.
         */
        void onInit(uint8_t controller);
        void (*pFuncOnInit)(void); // Pointer to function called in onInit()

        bool bPollEnable;

        /* Variables to store the buttons */
        uint32_t ButtonState[4];
        uint32_t OldButtonState[4];
        uint16_t ButtonClickState[4];
        int16_t hatValue[4][4];
        uint16_t controllerStatus[4];
        bool buttonStateChanged[4]; // True if a button has changed

        bool L2Clicked[4]; // These buttons are analog, so we use we use these bools to check if they where clicked or not
        bool R2Clicked[4];

        uint32_t checkStatusTimer; // Timing for checkStatus() signals

        uint8_t readBuf[EP_MAXPKTSIZE]; // General purpose buffer for input data
        uint8_t writeBuf[7]; // General purpose buffer for output data

        void readReport(uint8_t controller); // read incoming data
        void printReport(uint8_t controller, uint8_t nBytes); // print incoming date - Uncomment for debugging

        /* Private commands */
        void XboxCommand(uint8_t controller, uint8_t* data, uint16_t nbytes);
        void checkStatus();
};
#endif
