#ifndef PKE_PLAYER_INPUT_HPP
#define PKE_PLAYER_INPUT_HPP

#include "pk.h"

#include <cstdint>

TypeSafeInt_H(pke_input_action_set_handle, uint8_t, 0xFF);
TypeSafeInt_constexpr(pke_input_action_set_flag, uint8_t, 0xFF);
TypeSafeInt_constexpr(pke_input_event_hash, uint16_t, 0xFFFF);

constexpr pke_input_action_set_flag PKE_INPUT_ACTION_SET_FLAG_NONE             = pke_input_action_set_flag{0x00};
constexpr pke_input_action_set_flag PKE_INPUT_ACTION_SET_FLAG_DO_NOT_SERIALIZE = pke_input_action_set_flag{0x01};
constexpr pke_input_action_set_flag PKE_INPUT_ACTION_SET_FLAG_AUTO_ENABLE      = pke_input_action_set_flag{0x02};

const pke_input_event_hash PKE_INPUT_HASH_EVENT_TYPE_CURSOR_ENTER = pke_input_event_hash    {0x0001};
const pke_input_event_hash PKE_INPUT_HASH_EVENT_TYPE_CURSOR_POS = pke_input_event_hash      {0x0002};
const pke_input_event_hash PKE_INPUT_HASH_EVENT_TYPE_KEY = pke_input_event_hash             {0x0004};
const pke_input_event_hash PKE_INPUT_HASH_EVENT_TYPE_MOUSE_BUTTON = pke_input_event_hash    {0x0008};
const pke_input_event_hash PKE_INPUT_HASH_EVENT_TYPE_SCROLL = pke_input_event_hash          {0x0010};
const pke_input_event_hash PKE_INPUT_HASH_EVENT_TYPE_WINDOW_FOCUS = pke_input_event_hash    {0x0020};
const pke_input_event_hash PKE_INPUT_HASH_CURSOR_ENTERED_FALSE = pke_input_event_hash       {0x0040};
const pke_input_event_hash PKE_INPUT_HASH_CURSOR_ENTERED_TRUE = pke_input_event_hash        {0x0080};
const pke_input_event_hash PKE_INPUT_HASH_KEYBOARD_KEY_ACTION_RELEASE = pke_input_event_hash{0x0100};
const pke_input_event_hash PKE_INPUT_HASH_KEYBOARD_KEY_ACTION_PRESS = pke_input_event_hash  {0x0200};
const pke_input_event_hash PKE_INPUT_HASH_KEYBOARD_KEY_ACTION_REPEAT = pke_input_event_hash {0x0400};
const pke_input_event_hash PKE_INPUT_HASH_MOUSE_BUTTON_ACTION_RELEASE = pke_input_event_hash{0x0800};
const pke_input_event_hash PKE_INPUT_HASH_MOUSE_BUTTON_ACTION_PRESS = pke_input_event_hash  {0x1000};
const pke_input_event_hash PKE_INPUT_HASH_WINDOW_FOCUSED_FALSE = pke_input_event_hash       {0x2000};
const pke_input_event_hash PKE_INPUT_HASH_WINDOW_FOCUSED_TRUE = pke_input_event_hash        {0x4000};

const pke_input_event_hash PKE_INPUT_HASH_ALL_EVENTS =
	PKE_INPUT_HASH_EVENT_TYPE_CURSOR_ENTER
	| PKE_INPUT_HASH_EVENT_TYPE_CURSOR_POS
	| PKE_INPUT_HASH_EVENT_TYPE_KEY
	| PKE_INPUT_HASH_EVENT_TYPE_MOUSE_BUTTON
	| PKE_INPUT_HASH_EVENT_TYPE_SCROLL
	| PKE_INPUT_HASH_EVENT_TYPE_WINDOW_FOCUS;
const pke_input_event_hash PKE_INPUT_HASH_ALL_CURSOR_ENTER_EVENTS =
	PKE_INPUT_HASH_EVENT_TYPE_CURSOR_ENTER
	| PKE_INPUT_HASH_CURSOR_ENTERED_FALSE
	| PKE_INPUT_HASH_CURSOR_ENTERED_TRUE;
const pke_input_event_hash PKE_INPUT_HASH_ALL_CURSOR_POS_EVENTS =
	PKE_INPUT_HASH_EVENT_TYPE_CURSOR_POS;
const pke_input_event_hash PKE_INPUT_HASH_ALL_KEY_EVENTS =
	PKE_INPUT_HASH_EVENT_TYPE_KEY
	| PKE_INPUT_HASH_KEYBOARD_KEY_ACTION_RELEASE
	| PKE_INPUT_HASH_KEYBOARD_KEY_ACTION_PRESS
	| PKE_INPUT_HASH_KEYBOARD_KEY_ACTION_REPEAT;
const pke_input_event_hash PKE_INPUT_HASH_ALL_MOUSE_BUTTON_EVENTS =
	PKE_INPUT_HASH_EVENT_TYPE_MOUSE_BUTTON
	| PKE_INPUT_HASH_MOUSE_BUTTON_ACTION_RELEASE
	| PKE_INPUT_HASH_MOUSE_BUTTON_ACTION_PRESS;
const pke_input_event_hash PKE_INPUT_HASH_ALL_SCROLL_EVENTS =
	PKE_INPUT_HASH_EVENT_TYPE_SCROLL;
const pke_input_event_hash PKE_INPUT_HASH_ALL_WINDOW_FOCUS_EVENTS =
	PKE_INPUT_HASH_EVENT_TYPE_WINDOW_FOCUS
	| PKE_INPUT_HASH_WINDOW_FOCUSED_FALSE
	| PKE_INPUT_HASH_WINDOW_FOCUSED_TRUE;

struct pke_input_event {
	pke_input_action_set_handle sourceSet;
	pke_input_event_hash type;
	union pke_input_event_data {
		struct pke_input_event_cursor_enter {
			bool isEntered;
		} cursor_enter;
		struct pke_input_event_cursor_pos {
			double xMotion;
			double yMotion;
		} cursor_pos;
		struct pke_input_event_key {
			bool isPressed;
			bool thisTick;
			int32_t button;
			int32_t mods;
		} key;
		struct pke_input_event_mouse_button {
			bool isPressed;
			bool thisTick;
			int32_t button;
			int32_t mods;
		} mouse_button;
		struct pke_input_event_scroll {
			double xMotion;
			double yMotion;
		} scroll;
		struct pke_input_event_window_focus {
			bool isFocused;
		} window_focus;
	} data;
};

struct pke_input_event_mask {
	pke_input_event_hash computedHash = pke_input_event_hash{0};
	int32_t button = -1;
	int32_t mods = 0;
};

#define PKE_INPUT_ACTION_MASK_INDEX_PRIMARY 0
#define PKE_INPUT_ACTION_MASK_INDEX_SECONDARY 1
#define PKE_INPUT_ACTION_MASK_INDEX_COUNT 2
struct pke_input_action {
	const char *name;
	pke_input_event_mask masks[2] = {{},{}};
	int32_t event_indices[2] = {-1,-1};
};
struct pke_input_set {
	const char *title;
	int64_t actionCount;
	pke_input_action *actions;
	pke_input_action_set_flag flags;
	pk_membucket *bkt = nullptr;
};

void pke_input_tick(double delta);
const pke_input_event *pke_input_query_by_action_name(const char *actionName);
// note: must be called from main thread (per glfw)
// note: does not return `mods` nor `thisTick`
// note: only supports keyboard and mouse buttons
void pke_input_query_by_mask(pke_input_event_mask mask, pke_input_event &ev);
void pke_input_query_mouse_pos(double &x, double &y);
void pke_input_init();
pke_input_action_set_handle pke_input_register_set(const pke_input_set &&set);
void pke_input_activate_set(pke_input_action_set_handle handle);
void pke_input_deactivate_set(pke_input_action_set_handle handle);
void pke_input_unregister_set(pke_input_action_set_handle handle);
pk_arr_t<pke_input_set> &pke_input_get_input_sets();
pk_arr_t<pke_input_action_set_handle> &pke_input_get_active_input_action_set_handles();
void pke_input_teardown();

#endif /* PKE_PLAYER_INPUT_HPP */