/*
** c_dispatch.cpp
** Functions for executing console commands and aliases
**
**---------------------------------------------------------------------------
** Copyright 1998-2007 Randy Heit
** Copyright 2019 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
**    notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
**    notice, this list of conditions and the following disclaimer in the
**    documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
**    derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/

#include "c_buttons.h"
#include "templates.h"
#include "c_dispatch.h"
#include "printf.h"
#include "cmdlib.h"
#include "c_console.h"

ButtonMap buttonMap;


//=============================================================================
//
//
//
//=============================================================================

void ButtonMap::SetButtons(const char** names, int count)
{
	Buttons.Resize(count);
	NumToName.Resize(count);
	NameToNum.Clear();
	for(int i = 0; i < count; i++)
	{
		Buttons[i] = {};
		NameToNum.Insert(names[i], i);
		NumToName[i] = names[i];
	}
}

//=============================================================================
//
//
//
//=============================================================================

int ButtonMap::ListActionCommands (const char *pattern)
{
	char matcher[32];
	int count = 0;

	for (auto& btn : NumToName)
	{
		if (pattern == NULL || CheckWildcards (pattern,
			(mysnprintf (matcher, countof(matcher), "+%s", btn.GetChars()), matcher)))
		{
			Printf ("+%s\n", btn.GetChars());
			count++;
		}
		if (pattern == NULL || CheckWildcards (pattern,
			(mysnprintf (matcher, countof(matcher), "-%s", btn.GetChars()), matcher)))
		{
			Printf ("-%s\n", btn.GetChars());
			count++;
		}
	}
	return count;
}


//=============================================================================
//
//
//
//=============================================================================

int ButtonMap::FindButtonIndex (const char *key, int funclen) const
{
    if (!key) return -1;
	
	FName name = funclen == -1? FName(key, true) : FName(key, funclen, true);
	if (name == NAME_None) return -1;
	
	auto res = NameToNum.CheckKey(name);
	if (!res) return -1;
	
	return *res;
}


//=============================================================================
//
//
//
//=============================================================================

void ButtonMap::ResetButtonTriggers ()
{
	for (auto &button : Buttons)
	{
		button.ResetTriggers ();
	}
}

//=============================================================================
//
//
//
//=============================================================================

void ButtonMap::ResetButtonStates ()
{
	for (auto &btn : Buttons)
	{
		if (!btn.bReleaseLock) 
		{
			btn.ReleaseKey (0);
		}
		btn.ResetTriggers ();
	}
}

//=============================================================================
//
//
//
//=============================================================================

bool FButtonStatus::PressKey (int keynum)
{
	int i, open;

	keynum &= KEY_DBLCLICKED-1;

	if (keynum == 0)
	{ // Issued from console instead of a key, so force on
		Keys[0] = 0xffff;
		for (i = MAX_KEYS-1; i > 0; --i)
		{
			Keys[i] = 0;
		}
	}
	else
	{
		for (i = MAX_KEYS-1, open = -1; i >= 0; --i)
		{
			if (Keys[i] == 0)
			{
				open = i;
			}
			else if (Keys[i] == keynum)
			{ // Key is already down; do nothing
				return false;
			}
		}
		if (open < 0)
		{ // No free key slots, so do nothing
			Printf ("More than %u keys pressed for a single action!\n", MAX_KEYS);
			return false;
		}
		Keys[open] = keynum;
	}
	uint8_t wasdown = bDown;
	bDown = bWentDown = true;
	// Returns true if this key caused the button to go down.
	return !wasdown;
}

//=============================================================================
//
//
//
//=============================================================================

bool FButtonStatus::ReleaseKey (int keynum)
{
	int i, numdown, match;
	uint8_t wasdown = bDown;

	keynum &= KEY_DBLCLICKED-1;

	if (keynum == 0)
	{ // Issued from console instead of a key, so force off
		for (i = MAX_KEYS-1; i >= 0; --i)
		{
			Keys[i] = 0;
		}
		bWentUp = true;
		bDown = false;
	}
	else
	{
		for (i = MAX_KEYS-1, numdown = 0, match = -1; i >= 0; --i)
		{
			if (Keys[i] != 0)
			{
				++numdown;
				if (Keys[i] == keynum)
				{
					match = i;
				}
			}
		}
		if (match < 0)
		{ // Key was not down; do nothing
			return false;
		}
		Keys[match] = 0;
		bWentUp = true;
		if (--numdown == 0)
		{
			bDown = false;
		}
	}
	// Returns true if releasing this key caused the button to go up.
	return wasdown && !bDown;
}

//=============================================================================
//
//
//
//=============================================================================

void ButtonMap::AddButtonTabCommands()
{
	// Add all the action commands for tab completion
	for (auto& btn : NumToName)
	{
		char tname[16];
		strcpy (&tname[1], btn.GetChars());
		tname[0] = '+';
		C_AddTabCommand (tname);
		tname[0] = '-';
		C_AddTabCommand (tname);
	}
}
