--[[
	Dominos Minimap Button
		Based on the fubar and item rack minimap buttons
--]]

local L = LibStub('AceLocale-3.0'):GetLocale('Dominos')

local MinimapButton = CreateFrame('Button', 'DominosMinimapButton', Minimap)
Dominos.Minimap = MinimapButton

function MinimapButton:Load()
	self:SetFrameStrata('MEDIUM')
	self:SetWidth(31); self:SetHeight(31)
	self:SetFrameLevel(8)
	self:RegisterForClicks('anyUp')
	self:RegisterForDrag('LeftButton')
	self:SetHighlightTexture('Interface\\Minimap\\UI-Minimap-ZoomButton-Highlight')

	local overlay = self:CreateTexture(nil, 'OVERLAY')
	overlay:SetWidth(53); overlay:SetHeight(53)
	overlay:SetTexture('Interface\\Minimap\\MiniMap-TrackingBorder')
	overlay:SetPoint('TOPLEFT')

	local icon = self:CreateTexture(nil, 'BACKGROUND')
	icon:SetWidth(20); icon:SetHeight(20)
	icon:SetTexture('Interface\\AddOns\\Dominos\\Dominos')
	icon:SetTexCoord(0.05, 0.95, 0.05, 0.95)
	icon:SetPoint('TOPLEFT', 7, -5)
	self.icon = icon

	self:SetScript('OnEnter', self.OnEnter)
	self:SetScript('OnLeave', self.OnLeave)
	self:SetScript('OnClick', self.OnClick)
	self:SetScript('OnDragStart', self.OnDragStart)
	self:SetScript('OnDragStop', self.OnDragStop)
	self:SetScript('OnMouseDown', self.OnMouseDown)
	self:SetScript('OnMouseUp', self.OnMouseUp)
end

function MinimapButton:OnClick(button)
	if button == 'LeftButton' then
		if IsShiftKeyDown() then
			Dominos:ToggleBindingMode()
		else
			Dominos:ToggleLockedFrames()
		end
	elseif button == 'RightButton' then
		Dominos:ShowOptions()
	end
	self:OnEnter()
end

function MinimapButton:OnMouseDown()
	self.icon:SetTexCoord(0, 1, 0, 1)
end

function MinimapButton:OnMouseUp()
	self.icon:SetTexCoord(0.05, 0.95, 0.05, 0.95)
end

function MinimapButton:OnEnter()
	if not self.dragging then
		GameTooltip:SetOwner(self, 'ANCHOR_TOPRIGHT')
		GameTooltip:SetText('Dominos', 1, 1, 1)

		if Dominos:Locked() then
			GameTooltip:AddLine(L.ConfigEnterTip)
		else
			GameTooltip:AddLine(L.ConfigExitTip)
		end

		local KB = LibStub('LibKeyBound-1.0', true)
		if KB then
			if KB:IsShown() then
				GameTooltip:AddLine(L.BindingExitTip)
			else
				GameTooltip:AddLine(L.BindingEnterTip)
			end
		end

		local enabled = select(4, GetAddOnInfo('Dominos_Config'))
		if enabled then
			GameTooltip:AddLine(L.ShowOptionsTip)
		end
		GameTooltip:Show()
	end
end

function MinimapButton:OnLeave()
	GameTooltip:Hide()
end

function MinimapButton:OnDragStart()
	self.dragging = true
	self:LockHighlight()
	self.icon:SetTexCoord(0, 1, 0, 1)
	self:SetScript('OnUpdate', self.OnUpdate)
	GameTooltip:Hide()
end

function MinimapButton:OnDragStop()
	self.dragging = nil
	self:SetScript('OnUpdate', nil)
	self.icon:SetTexCoord(0.05, 0.95, 0.05, 0.95)
	self:UnlockHighlight()
end

function MinimapButton:OnUpdate()
	local mx, my = Minimap:GetCenter()
	local px, py = GetCursorPosition()
	local scale = Minimap:GetEffectiveScale()

	px, py = px / scale, py / scale

	Dominos:SetMinimapButtonPosition(math.deg(math.atan2(py - my, px - mx)) % 360)
	self:UpdatePosition()
end

--magic fubar code for updating the minimap button's position
--I suck at trig, so I'm not going to bother figuring it out
function MinimapButton:UpdatePosition()
	local angle = math.rad(Dominos:GetMinimapButtonPosition() or random(0, 360))
	local cos = math.cos(angle)
	local sin = math.sin(angle)
	local minimapShape = GetMinimapShape and GetMinimapShape() or 'ROUND'

	local round = false
	if minimapShape == 'ROUND' then
		round = true
	elseif minimapShape == 'SQUARE' then
		round = false
	elseif minimapShape == 'CORNER-TOPRIGHT' then
		round = not(cos < 0 or sin < 0)
	elseif minimapShape == 'CORNER-TOPLEFT' then
		round = not(cos > 0 or sin < 0)
	elseif minimapShape == 'CORNER-BOTTOMRIGHT' then
		round = not(cos < 0 or sin > 0)
	elseif minimapShape == 'CORNER-BOTTOMLEFT' then
		round = not(cos > 0 or sin > 0)
	elseif minimapShape == 'SIDE-LEFT' then
		round = cos <= 0
	elseif minimapShape == 'SIDE-RIGHT' then
		round = cos >= 0
	elseif minimapShape == 'SIDE-TOP' then
		round = sin <= 0
	elseif minimapShape == 'SIDE-BOTTOM' then
		round = sin >= 0
	elseif minimapShape == 'TRICORNER-TOPRIGHT' then
		round = not(cos < 0 and sin > 0)
	elseif minimapShape == 'TRICORNER-TOPLEFT' then
		round = not(cos > 0 and sin > 0)
	elseif minimapShape == 'TRICORNER-BOTTOMRIGHT' then
		round = not(cos < 0 and sin < 0)
	elseif minimapShape == 'TRICORNER-BOTTOMLEFT' then
		round = not(cos > 0 and sin < 0)
	end

	local x, y
	if round then
		x = cos*80
		y = sin*80
	else
		x = math.max(-82, math.min(110*cos, 84))
		y = math.max(-86, math.min(110*sin, 82))
	end

	self:SetPoint('CENTER', x, y)
end

MinimapButton:Load()