--[===[
    Copyright (c) 2010 yleaf (yaroot@gmail.com)

    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation
    files (the "Software"), to deal in the Software without
    restriction, including without limitation the rights to use,
    copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the
    Software is furnished to do so, subject to the following
    conditions:

    The above copyright notice and this permission notice shall be
    included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
    OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
    HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
    WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
    OTHER DEALINGS IN THE SOFTWARE.
]===]

local Cenote = LibStub('AceAddon-3.0'):NewAddon('Cenote', 'AceEvent-3.0')
local debug

local complexLocationTable = {
	['RIGHT (FLIPPED)'] = 'RIGHT',
	['BOTTOM (FLIPPED)'] = 'BOTTOM',
	['LEFT + RIGHT (FLIPPED)'] = 'BOTTOM',
	['TOP + BOTTOM (FLIPPED)'] = 'BOTTOM',
}

function Cenote:OnInitialize()
    local debugf = tekDebug and tekDebug:GetFrame'Cenote'
    debug = debugf and function(...)
        debugf:AddMessage(string.join(', ', tostringall(...)))
    end or function() end

    debug'OnLoad'

    self.timers = {}
    self.SAFrame = SpellActivationOverlayFrame

    SpellActivationOverlayFrame:HookScript('OnEvent', function(...)
        Cenote:OnSAOFEvent(...)
    end)

    self:RegisterEvent('UNIT_AURA', 'UNIT_AURA')
end

function Cenote:OnSAOFEvent(_, event, ...)
    debug('OnEvent', event)
    if(event and self[event]) then
        self[event](self, ...)
    end
end

function Cenote:UNIT_AURA(event, unit)
    --if(unit == PlayerFrame.unit) then
    if(unit == 'player') then
        return self:RescanVisibleOverlay()
    end
end

function Cenote:RescanVisibleOverlay()
    for index, f in ipairs(self.timers) do
        if(f.using) then
            self:UpdateTimer(f)
        end
    end
end

function Cenote:UpdateTimer(f)
    local endTime = self:GetTimeLeft(f.spellID)
    if(endTime) then
        f.endTime = endTime
        self:Update(f)
    else
        self:Remove(f)
    end
end

function Cenote:SPELL_ACTIVATION_OVERLAY_SHOW(spellID, texture, position, scale, r, g, b)
    local f = self:Get(spellID)
    local endTime = self:GetTimeLeft(spellID)
    local POS = strupper(position)
    debug('SHOW', f, endTime, spellID, texture, position, complexLocationTable[POS], scale, r, g, b)

    if(endTime) then
        if(not f) then
            f = self:GetUnused()
            f.using = true
        end
        f.spellID = spellID
        f.position = position
        f.endTime = endTime
        f.realPosition = complexLocationTable[POS] or POS
        f.scale = scale
        --f.r = r
        --f.g = g
        --f.b = b

        self:Update(f)
    else
        if(f) then
            self:Remove(f)
        end
    end
end

function Cenote:SPELL_ACTIVATION_OVERLAY_HIDE(spellID)
    debug('HIDE', spellID)
    local f = self:Get(spellID)
    if(f) then
        self:Remove(f)
    end
end

do
    local _SPELLS = setmetatable({}, {__index=function(t,i)
        local n = GetSpellInfo(i)
        rawset(t, i, n)
        return n
    end})

    function Cenote:GetTimeLeft(spellID)
        local spell = _SPELLS[spellID]
        debug('SPELLID', spellID, spell)
        if(not spell) then return end

        local name, rank, icon, count, debuffType, duration, expiration, caster = UnitAura('player', spell)
        debug('SPELL', spellID, spell, name, duration, expiration, caster)
        if(name and duration>0 and expiration>GetTime()) then
            return expiration
        end
    end

    local function update(self)
        local timeLeft = self.endTime - GetTime()
        if(timeLeft > 0) then
            self.text:SetText(floor(timeLeft) .. '.')

            local s = timeLeft - floor(timeLeft)
            self.text2:SetText(floor(s*1000))

            --self.nextUpdate = timeLeft - floor(timeLeft)
        else
            Cenote:Remove(self)
        end
    end

    --local function onUpdate(self, elps)
    --    update(self)
    --end

    function Cenote:Update(f)
        debug('UPDATE', f.spellID)
        --f.text:SetTextColor(f.r, f.g, f.b)
        f:ClearAllPoints()
        f:SetPoint(f.realPosition, self.SAFrame)
        f:Show()

        --f.nextUpdate = 0
        update(f)
        f:SetScript('OnUpdate', update)
    end
end

function Cenote:Remove(f)
    debug('REMOVE', f, f.spellID)
    f:Hide()
    f:SetScript('OnUpdate', nil)
    f.using = nil
end

function Cenote:Get(spellID)
    for k, v in ipairs(self.timers) do
        if(v.using and v.spellID == spellID) then
            return v
        end
    end
end

function Cenote:GetUnused()
    for k, v in ipairs(self.timers) do
        if(not v.using) then return v end
    end
    return self:CreateTimer()
end

local r, g, b, m = 1, .1, .1, .7
local font = QuestFont_Large:GetFont()
function Cenote:CreateTimer()
    debug'CreateTimer'
    local f = CreateFrame('Frame', nil, self.SAFrame)
    tinsert(self.timers, f)
    f:SetWidth(2)
    f:SetHeight(2)

    f.text = f:CreateFontString(nil, 'OVERLAY')
    f.text:SetFont(font, 32, 'OUTLINE')
    f.text:SetPoint('BOTTOMRIGHT', f)
    f.text:SetJustifyH('RIGHT')
    f.text:SetJustifyV('BOTTOM')
    f.text:SetTextColor(r, g, b)

    f.text2 = f:CreateFontString(nil, 'OVERLAY')
    f.text2:SetFont(font, 20, 'OUTLINE')
    f.text2:SetPoint('BOTTOMLEFT', f, 'BOTTOMRIGHT', 0, 3)
    f.text2:SetJustifyH('LEFT')
    f.text2:SetJustifyV('BOTTOM')
    f.text2:SetTextColor(r, g, b)

    return f
end