CURRENT_ACTIONBAR_PAGE = 1;
NUM_ACTIONBAR_PAGES = 6;
NUM_ACTIONBAR_BUTTONS = 12;
ATTACK_BUTTON_FLASH_TIME = 0.4;

IN_ATTACK_MODE = 0;

-- Sarf SemiAutoRecast Addon START

--[[
	Sarf's SemiAutoRecast script v0.3 - 2004-06-24 14:29 GMT+2
	Based on code by wonderful. 
	This is simply a refactoring of wonderful's code to make it easier to extend.

	wonderful's original post : http://www.worldofwarcraft.com/thread.aspx?FN=wow-interface-customization&T=3383
	To make this script work, you should follow wonderful's steps 1 to 3,
	replace the code in step 4 with the code below, then complete step 4 and 5.
	
	I recommend adding the function call to MOVEBACKWARD and MOVEFORWARD, too, 
	but that's just me. :)
]]--

--]]
	AUTORECAST_ACTIONBARNUMBER, AUTORECAST_ACTIONBARKEYNUMBER and 
	AUTORECAST_WAIT must all have the same number of elements.
	The reason for this is that each "column" of the three tables 
	make up the instructions for how to cast the spells in question.
	
	It is suggested that the number of elements of these three tables is 
	equal to AUTORECAST_MAXINDEX, but as long as it is not fewer elements,
	it will work fine. It can (and should) be replaced by a 
	getNumberOfElementsOfTable() function, but I don't know enough about lua 
	to know what it is called, or even if there is one.
	
	Note: You should place the spell/ability with the least duration FIRST,
	as the code will iterate through the tables and wait the specified time 
	between each new "cast"
]]--


-- The autorecast action bar numbers - what keybar to switch to
AUTORECAST_ACTIONBARNUMBER = { 6, 6 };
-- The autorecast action bar key numbers - what keys to press on the keybar 
AUTORECAST_ACTIONBARKEYNUMBER = { 11, 12 };
-- The autorecast wait - how long to wait until going to the next autorecast
AUTORECAST_WAIT = { 2, 150 };

-- the number of autorecasts you have
AUTORECAST_MAXINDEX = 2;

-- which index the AUTORECAST should use the next time
AUTORECAST_CURRENTINDEX = 1;
-- contains the time when the next autorecast should be done
AUTORECAST_CURRENTWAIT = 0;

-- to remain backwards compatible
function SemiAutoRecast()
	SemiAutoRecast();
end

-- will reset the AutoRecast so that it starts fresh
function SemiAutoRecastReset()
	AUTORECAST_CURRENTINDEX = 1;	
	AUTORECAST_CURRENTWAIT = 0;
	-- perhaps do a recast?
	-- SemiAutoRecast();
end

-- checks if it is time to auto recast something, 
-- and tries to do so if the time is right
function SemiAutoRecast()
        local time = GetTime();
        if ( IN_ATTACK_MODE == 0 and ( time > AUTORECAST_CURRENTWAIT ) ) then
                local curBar = CURRENT_ACTIONBAR_PAGE;

		-- prevents unnecessary action bar switching
                if(curBar ~= AUTORECAST_ACTIONBARNUMBER[AUTORECAST_CURRENTINDEX] ) then
			CURRENT_ACTIONBAR_PAGE = AUTORECAST_ACTIONBARNUMBER[AUTORECAST_CURRENTINDEX];
  	            	ChangeActionBarPage();
  	        end

                ActionButtonDown( AUTORECAST_ACTIONBARKEYNUMBER[AUTORECAST_CURRENTINDEX] );
                ActionButtonUp( AUTORECAST_ACTIONBARKEYNUMBER[AUTORECAST_CURRENTINDEX] );

		AUTORECAST_CURRENTWAIT = time + AUTORECAST_WAIT[AUTORECAST_CURRENTINDEX];
  	            
		AUTORECAST_CURRENTINDEX = AUTORECAST_CURRENTINDEX + 1;
  	            
		if(AUTORECAST_CURRENTINDEX > AUTORECAST_MAXINDEX) then
  	            	AUTORECAST_CURRENTINDEX = 1;
  	        end

		-- prevents unnecessary action bar switching
                if(curBar ~= CURRENT_ACTIONBAR_PAGE ) then
	              CURRENT_ACTIONBAR_PAGE = curBar;
  	              ChangeActionBarPage();
  	        end
        end
end

-- Sarf SemiAutoRecast Addon END


function ActionButtonDown(id)
	if ( BonusActionBarFrame:IsVisible() ) then
		local button = getglobal("BonusActionButton"..id);
		if ( button:GetButtonState() == "NORMAL" ) then
			button:SetButtonState("PUSHED");
		end
		return;
	end
	
	local button = getglobal("ActionButton"..id);
	if ( button:GetButtonState() == "NORMAL" ) then
		button:SetButtonState("PUSHED");
	end
end

function ActionButtonUp(id)
	if ( BonusActionBarFrame:IsVisible() ) then
		local button = getglobal("BonusActionButton"..id);
		if ( button:GetButtonState() == "PUSHED" ) then
			button:SetButtonState("NORMAL");
			-- Used to save a macro
			MacroFrame_EditMacro();
			UseAction(ActionButton_GetPagedID(button), 0);
			if ( IsCurrentAction(ActionButton_GetPagedID(button)) ) then
				button:SetChecked(1);
			else
				button:SetChecked(0);
			end
		end
		return;
	end

	local button = getglobal("ActionButton"..id);
	if ( button:GetButtonState() == "PUSHED" ) then
		button:SetButtonState("NORMAL");
		-- Used to save a macro
		MacroFrame_EditMacro();
		UseAction(ActionButton_GetPagedID(button), 0);
		if ( IsCurrentAction(ActionButton_GetPagedID(button)) ) then
			button:SetChecked(1);
		else
			button:SetChecked(0);
		end
	end
end

function ActionBar_PageUp()
	CURRENT_ACTIONBAR_PAGE = CURRENT_ACTIONBAR_PAGE + 1;
	if ( CURRENT_ACTIONBAR_PAGE > NUM_ACTIONBAR_PAGES ) then
		CURRENT_ACTIONBAR_PAGE = 1;
	end
	ChangeActionBarPage();
end

function ActionBar_PageDown()
	CURRENT_ACTIONBAR_PAGE = CURRENT_ACTIONBAR_PAGE - 1;
	if ( CURRENT_ACTIONBAR_PAGE < 1 ) then
		CURRENT_ACTIONBAR_PAGE = NUM_ACTIONBAR_PAGES;
	end
	ChangeActionBarPage();
end

function ActionButton_OnLoad()
	this.showgrid = 0;
	this.flashing = 0;
	this.flashtime = 0;
	ActionButton_Update();
	this:RegisterForDrag("LeftButton", "RightButton");
	this:RegisterForClicks("LeftButtonUp", "RightButtonUp");
	this:RegisterEvent("ACTIONBAR_SHOWGRID");
	this:RegisterEvent("ACTIONBAR_HIDEGRID");
	this:RegisterEvent("ACTIONBAR_PAGE_CHANGED");
	this:RegisterEvent("ACTIONBAR_SLOT_CHANGED");
	this:RegisterEvent("ACTIONBAR_UPDATE_STATE");
	this:RegisterEvent("ACTIONBAR_UPDATE_USABLE");
	this:RegisterEvent("ACTIONBAR_UPDATE_COOLDOWN");
	this:RegisterEvent("PLAYER_AURAS_CHANGED");
	this:RegisterEvent("PLAYER_TARGET_CHANGED");
	this:RegisterEvent("UNIT_AURASTATE");
	this:RegisterEvent("UNIT_INVENTORY_CHANGED");
	this:RegisterEvent("CRAFT_SHOW");
	this:RegisterEvent("CRAFT_CLOSE");
	this:RegisterEvent("TRADE_SKILL_SHOW");
	this:RegisterEvent("TRADE_SKILL_CLOSE");
	this:RegisterEvent("UNIT_HEALTH");
	this:RegisterEvent("UNIT_MANA");
	this:RegisterEvent("UNIT_RAGE");
	this:RegisterEvent("UNIT_FOCUS");
	this:RegisterEvent("UNIT_ENERGY");
	this:RegisterEvent("UPDATE_BONUS_ACTIONBAR");
	this:RegisterEvent("PLAYER_ENTER_COMBAT");
	this:RegisterEvent("PLAYER_LEAVE_COMBAT");
	this:RegisterEvent("PLAYER_COMBO_POINTS");
	this:RegisterEvent("UPDATE_BINDINGS");
	ActionButton_UpdateHotkeys();
end

function ActionButton_UpdateHotkeys()
	local hotkey = getglobal(this:GetName().."HotKey");
	local action = "ACTIONBUTTON"..this:GetID();
	hotkey:SetText(KeyBindingFrame_GetLocalizedName(GetBindingKey(action), "KEY_"));
end

function ActionButton_Update()
	-- Determine whether or not the button should be flashing or not since the button may have missed the enter combat event
	if ( IsAttackAction(ActionButton_GetPagedID(this)) and IsCurrentAction(ActionButton_GetPagedID(this)) ) then
		IN_ATTACK_MODE = 1;
	else
		IN_ATTACK_MODE = 0;
	end
	
	-- Special case code for bonus bar buttons
	-- Prevents the button from updating if the bonusbar is still in an animation transition

	-- Derek, I had to comment this out because it was causing them all to be grayed out after a cinematic...
	if ( this.isBonus and this.inTransition ) then
		ActionButton_UpdateUsable();
		ActionButton_UpdateCooldown();
		return;
	end
	
	local icon = getglobal(this:GetName().."Icon");
	local buttonCooldown = getglobal(this:GetName().."Cooldown");
	local texture = GetActionTexture(ActionButton_GetPagedID(this));
	if ( texture ) then
		icon:SetTexture(texture);
		icon:Show();
		this:SetNormalTexture("Interface\\Buttons\\UI-Quickslot2");
		-- Save texture if the button is a bonus button, will be needed later
		if ( this.isBonus ) then
			this.texture = texture;
		end
	else
		icon:Hide();
		buttonCooldown:Hide();
		this:SetNormalTexture("Interface\\Buttons\\UI-Quickslot");
	end
	ActionButton_UpdateCount();
	if ( HasAction(ActionButton_GetPagedID(this)) ) then
		this:Show();
		ActionButton_UpdateUsable();
		ActionButton_UpdateCooldown();
	elseif ( this.showgrid == 0 ) then
		this:Hide();
	else
		getglobal(this:GetName().."Cooldown"):Hide();
	end
	if ( IsAttackAction(ActionButton_GetPagedID(this)) and IN_ATTACK_MODE == 1 ) then
		ActionButton_StartFlash();
	else
		ActionButton_StopFlash();
	end
	if ( GameTooltip:IsOwned(this) ) then
		ActionButton_SetTooltip();
	else
		this.updateTooltip = nil;
	end

	-- Update Macro Text
	local macroName = getglobal(this:GetName().."Name");
	macroName:SetText(GetActionText(ActionButton_GetPagedID(this)));
end

function ActionButton_ShowGrid()
	this.showgrid = this.showgrid+1;
	getglobal(this:GetName().."NormalTexture"):SetVertexColor(1.0, 1.0, 1.0);
	this:Show();
end

function ActionButton_HideGrid()	
	this.showgrid = this.showgrid-1;
	if ( this.showgrid == 0 and not HasAction(ActionButton_GetPagedID(this)) ) then
		this:Hide();
	end
end

function ActionButton_UpdateState()
	if ( IsCurrentAction(ActionButton_GetPagedID(this)) ) then
		this:SetChecked(1);
	else
		this:SetChecked(0);
	end
end

function ActionButton_UpdateUsable()
	local icon = getglobal(this:GetName().."Icon");
	local normalTexture = getglobal(this:GetName().."NormalTexture");
	local isUsable, notEnoughMana = IsUsableAction(ActionButton_GetPagedID(this));
	if ( isUsable ) then
		icon:SetVertexColor(1.0, 1.0, 1.0);
		normalTexture:SetVertexColor(1.0, 1.0, 1.0);
	elseif ( notEnoughMana ) then
		icon:SetVertexColor(0.5, 0.5, 1.0);
		normalTexture:SetVertexColor(0.5, 0.5, 1.0);
	else
		icon:SetVertexColor(0.4, 0.4, 0.4);
		normalTexture:SetVertexColor(1.0, 1.0, 1.0);
	end
end

function ActionButton_UpdateCount()
	local text = getglobal(this:GetName().."Count");
	local count = GetActionCount(ActionButton_GetPagedID(this));
	if ( count > 1 ) then
		text:SetText(count);
	else
		text:SetText("");
	end
end

function ActionButton_UpdateCooldown()
	local cooldown = getglobal(this:GetName().."Cooldown");
	local start, duration, enable = GetActionCooldown(ActionButton_GetPagedID(this));
	CooldownFrame_SetTimer(cooldown, start, duration, enable);
end

function ActionButton_OnEvent(event)
	if ( event == "ACTIONBAR_SLOT_CHANGED" ) then
		if ( arg1 == -1 or arg1 == ActionButton_GetPagedID(this) ) then
			ActionButton_Update();
		end
		return;
	end
	if ( event == "ACTIONBAR_PAGE_CHANGED" or event == "PLAYER_AURAS_CHANGED" or event == "UPDATE_BONUS_ACTIONBAR" ) then
		ActionButton_Update();
		ActionButton_UpdateState();
		return;
	end
	if ( event == "ACTIONBAR_SHOWGRID" ) then
		ActionButton_ShowGrid();
		return;
	end
	if ( event == "ACTIONBAR_HIDEGRID" ) then
		ActionButton_HideGrid();
		return;
	end
	if ( event == "UPDATE_BINDINGS" ) then
		ActionButton_UpdateHotkeys();
	end

	-- All event handlers below this line MUST only be valid when the button is visible
	if ( not this:IsVisible() ) then
		return;
	end

	if ( event == "PLAYER_TARGET_CHANGED" ) then
		ActionButton_UpdateUsable();
		return;
	end
	if ( event == "UNIT_AURASTATE" ) then
		if ( arg1 == "player" or arg1 == "target" ) then
			ActionButton_UpdateUsable();
		end
		return;
	end
	if ( event == "UNIT_INVENTORY_CHANGED" ) then
		if ( arg1 == "player" ) then
			ActionButton_Update();
		end
		return;
	end
	if ( event == "ACTIONBAR_UPDATE_STATE" ) then
		ActionButton_UpdateState();
		return;
	end
	if ( event == "ACTIONBAR_UPDATE_USABLE" ) then
		ActionButton_UpdateUsable();
		return;
	end
	if ( event == "ACTIONBAR_UPDATE_COOLDOWN" ) then
		-- Do we really need to update usable state?  It adds 50% CPU usage in this event processing
		--ActionButton_UpdateUsable();
		ActionButton_UpdateCooldown();
		return;
	end
	if ( event == "CRAFT_SHOW" or event == "CRAFT_CLOSE" or event == "TRADE_SKILL_SHOW" or event == "TRADE_SKILL_CLOSE" ) then
		ActionButton_UpdateState();
		return;
	end
	if ( arg1 == "player" and (event == "UNIT_HEALTH" or event == "UNIT_MANA" or event == "UNIT_RAGE" or event == "UNIT_FOCUS" or event == "UNIT_ENERGY") ) then
		ActionButton_UpdateUsable();
		return;
	end
	if ( event == "PLAYER_ENTER_COMBAT" ) then
		IN_ATTACK_MODE = 1;
		if ( IsAttackAction(ActionButton_GetPagedID(this)) ) then
			ActionButton_StartFlash();
		end
		return;
	end
	if ( event == "PLAYER_LEAVE_COMBAT" ) then
		IN_ATTACK_MODE = 0;
		if ( IsAttackAction(ActionButton_GetPagedID(this)) ) then
			ActionButton_StopFlash();
		end
		return;
	end
	if ( event == "PLAYER_COMBO_POINTS" ) then
		ActionButton_UpdateUsable();
		return;
	end
end

function ActionButton_SetTooltip()
	GameTooltip:SetOwner(this, "ANCHOR_RIGHT");
	if ( GameTooltip:SetAction(ActionButton_GetPagedID(this)) ) then
		this.updateTooltip = TOOLTIP_UPDATE_TIME;
	else
		this.updateTooltip = nil;
	end
end

function ActionButton_OnUpdate(elapsed)
	if ( this.flashing ~= 0 and this.flashing) then
		this.flashtime = this.flashtime - elapsed;
		if ( this.flashtime <= 0 ) then
			local overtime = -this.flashtime;
			if ( overtime >= ATTACK_BUTTON_FLASH_TIME ) then
				overtime = 0;
			end
			this.flashtime = ATTACK_BUTTON_FLASH_TIME - overtime;

			local flashTexture = getglobal(this:GetName().."Flash");
			if ( flashTexture:IsVisible() ) then
				flashTexture:Hide();
			else
				flashTexture:Show();
			end
		end
	end

	if ( not this.updateTooltip ) then
		return;
	end

	this.updateTooltip = this.updateTooltip - elapsed;
	if ( this.updateTooltip > 0 ) then
		return;
	end

	if ( GameTooltip:IsOwned(this) ) then
		ActionButton_SetTooltip();
	else
		this.updateTooltip = nil;
	end
end

function ActionButton_GetPagedID(button)
	if( button == nil ) then
		message("nil button passed into ActionButton_GetPagedID(), contact Jeff");
		return 0;
	end
	if ( button.isBonus and CURRENT_ACTIONBAR_PAGE == 1 ) then
		return (button:GetID() + ((NUM_ACTIONBAR_PAGES + GetBonusBarOffset() - 1) * NUM_ACTIONBAR_BUTTONS));
	else
		return (button:GetID() + ((CURRENT_ACTIONBAR_PAGE - 1) * NUM_ACTIONBAR_BUTTONS))
	end
end

function ActionButton_StartFlash()
	this.flashing = 1;
	this.flashtime = 0;
	ActionButton_UpdateState();
end

function ActionButton_StopFlash()
	this.flashing = 0;
	getglobal(this:GetName().."Flash"):Hide();
	ActionButton_UpdateState();
end