#include "IZ_keyboard.h"

void IZ_KeyboardHandleKeyUpDownEvents(IZ_KeyboardState* state, IZ_Action* action, SDL_Event e) {
	u8 control_index;
	for (control_index = 0; control_index < CONTROLS; control_index += 1) {
		if (e.key.keysym.sym == state->config.control_mapping[control_index]) {
			const u16 bitflag = (0x1 << control_index);
			if (e.type == SDL_KEYDOWN) {
				*action |= bitflag;
				return;
			}
			if (e.type == SDL_KEYUP) {
				*action &= ~bitflag;
				return;
			}
		}
	}
}

void IZ_KeyboardHandleEvents(IZ_KeyboardState(* state)[IZ_PLAYERS], IZ_Action(* action)[IZ_PLAYERS], SDL_Event e) {
	for (u8 player_index = 0; player_index < IZ_PLAYERS; player_index += 1) {
		IZ_KeyboardHandleKeyUpDownEvents(&(*state)[player_index], &(*action)[player_index], e);
	}
}

IZ_ProcedureResult IZ_KeyboardSaveConfig(IZ_KeyboardState(* state)[IZ_PLAYERS], const char* config_path) {
	u8 problem = 0;
	char control_mapping_section_name[26];

	u8 player_index;
	u8 control_index;
	for (player_index = 0; player_index < IZ_PLAYERS; player_index += 1) {
		sprintf_s(control_mapping_section_name, 26, "Keyboard.%d.ControlMapping", player_index);
		for (control_index = 0; control_index < CONTROLS; control_index += 1) {
			if (!ini_puts(
				control_mapping_section_name,
				ACTION_NAMES[control_index],
				SDL_GetKeyName((*state)[player_index].config.control_mapping[control_index]),
				config_path
			)) {
				problem |= (1 << player_index);
			}
		}
	}

	return problem;
}

void IZ_KeyboardLoadConfig(IZ_KeyboardState(* state)[IZ_PLAYERS], const char* config_path) {
	char buffer[128];
	char keyboard_section_name[26];

	u8 player_index;
	u8 control_index;
	for (player_index = 0; player_index < IZ_PLAYERS; player_index += 1) {
		sprintf_s(keyboard_section_name, 26, "Keyboard.%d.ControlMapping", player_index);
		for (control_index = 0; control_index < CONTROLS; control_index += 1) {
			ini_gets(
				keyboard_section_name,
				ACTION_NAMES[control_index],
				SDL_GetKeyName(IZ_KEYBOARD_DEFAULT_STATE[player_index].config.control_mapping[control_index]),
				buffer,
				128,
				config_path
			);

			(*state)[player_index].config.control_mapping[control_index] = SDL_GetKeyFromName(buffer);
		}
	}
}

IZ_ProcedureResult IZ_KeyboardInitialize(IZ_KeyboardState(* state)[IZ_PLAYERS], const char* config_path, u8 argc, const char* argv[]) {
	SDL_memcpy(state, &IZ_KEYBOARD_DEFAULT_STATE, sizeof(IZ_KeyboardState));
	IZ_KeyboardLoadConfig(state, config_path);
	return IZ_KeyboardSaveConfig(state, config_path);
}