#pragma once

#include "Emu/Io/pad_types.h"

#include <array>
#include "util/types.hpp"

enum CellPadError : u32
{
	CELL_PAD_ERROR_FATAL                      = 0x80121101,
	CELL_PAD_ERROR_INVALID_PARAMETER          = 0x80121102,
	CELL_PAD_ERROR_ALREADY_INITIALIZED        = 0x80121103,
	CELL_PAD_ERROR_UNINITIALIZED              = 0x80121104,
	CELL_PAD_ERROR_RESOURCE_ALLOCATION_FAILED = 0x80121105,
	CELL_PAD_ERROR_DATA_READ_FAILED           = 0x80121106,
	CELL_PAD_ERROR_NO_DEVICE                  = 0x80121107,
	CELL_PAD_ERROR_UNSUPPORTED_GAMEPAD        = 0x80121108,
	CELL_PAD_ERROR_TOO_MANY_DEVICES           = 0x80121109,
	CELL_PAD_ERROR_EBUSY                      = 0x8012110a,
};

enum CellPadFilterError : u32
{
	CELL_PADFILTER_ERROR_INVALID_PARAMETER = 0x80121401,
};

// Length returned in CellPadData struct
enum
{
	CELL_PAD_LEN_NO_CHANGE = 0,
	CELL_PAD_LEN_CHANGE_DEFAULT = 8,
	CELL_PAD_LEN_CHANGE_PRESS_ON = 20,
	CELL_PAD_LEN_CHANGE_SENSOR_ON = 24,
};

enum
{
	CELL_PADFILTER_IIR_CUTOFF_2ND_LPF_BT_050 = 0, // 50% Nyquist frequency
	CELL_PADFILTER_IIR_CUTOFF_2ND_LPF_BT_020 = 1, // 20% Nyquist frequency
	CELL_PADFILTER_IIR_CUTOFF_2ND_LPF_BT_010 = 2, // 10% Nyquist frequency
};

struct pad_data_internal
{
	u16 vendor_id;
	u16 product_id;
	u32 port_status;
	u32 device_capability;
	u32 device_type;
	u32 pclass_type;
	u32 pclass_profile;

	ENABLE_BITWISE_SERIALIZATION;
};

struct CellPadInfo
{
	be_t<u32> max_connect;
	be_t<u32> now_connect;
	be_t<u32> system_info;
	be_t<u16> vendor_id[CELL_MAX_PADS];
	be_t<u16> product_id[CELL_MAX_PADS];
	u8 status[CELL_MAX_PADS];
};

struct CellPadInfo2
{
	be_t<u32> max_connect;
	be_t<u32> now_connect;
	be_t<u32> system_info;
	be_t<u32> port_status[CELL_PAD_MAX_PORT_NUM];
	be_t<u32> port_setting[CELL_PAD_MAX_PORT_NUM];
	be_t<u32> device_capability[CELL_PAD_MAX_PORT_NUM];
	be_t<u32> device_type[CELL_PAD_MAX_PORT_NUM];
};

struct CellPadPeriphInfo
{
	be_t<u32> max_connect;
	be_t<u32> now_connect;
	be_t<u32> system_info;
	be_t<u32> port_status[CELL_PAD_MAX_PORT_NUM];
	be_t<u32> port_setting[CELL_PAD_MAX_PORT_NUM];
	be_t<u32> device_capability[CELL_PAD_MAX_PORT_NUM];
	be_t<u32> device_type[CELL_PAD_MAX_PORT_NUM];
	be_t<u32> pclass_type[CELL_PAD_MAX_PORT_NUM];
	be_t<u32> pclass_profile[CELL_PAD_MAX_PORT_NUM];
};

struct CellPadPeriphData
{
	be_t<u32> pclass_type;
	be_t<u32> pclass_profile;
	CellPadData cellpad_data;
};

struct CellPadCapabilityInfo
{
	be_t<u32> info[CELL_PAD_MAX_CAPABILITY_INFO];
};

struct CellPadActParam
{
	u8 motor[CELL_PAD_ACTUATOR_MAX];
	u8 reserved[6];
};

struct CellPadFilterIIRSos
{
	be_t<s32> u[3];
	be_t<s32> a1;
	be_t<s32> a2;
	be_t<s32> b0;
	be_t<s32> b1;
	be_t<s32> b2;
};

struct pad_info
{
	atomic_t<u32> max_connect = 0;
	std::array<u32, CELL_PAD_MAX_PORT_NUM> port_setting{ 0 };
	std::array<pad_data_internal, CELL_PAD_MAX_PORT_NUM> reported_info{};

	SAVESTATE_INIT_POS(11);

	pad_info() = default;
	pad_info(utils::serial& ar);
	void save(utils::serial& ar);

	u32 get_max_connect() const
	{
		return std::min<u32>(max_connect, CELL_PAD_MAX_PORT_NUM);
	}

	// Unreliable way the firmware uses to optimize away pad calls for disconnected pads
	// This result relies on data updates from config events on a dedicated thread to receive them
	bool is_reportedly_connected(u32 port_no) const
	{
		return port_no < get_max_connect() && !!(reported_info[port_no].port_status & CELL_PAD_STATUS_CONNECTED);
	}
};

error_code cellPadGetData(u32 port_no, vm::ptr<CellPadData> data);
error_code cellPadInit(ppu_thread& ppu, u32 max_connect);
error_code cellPadSetPortSetting(u32 port_no, u32 port_setting);