-- SpellNotReadyYet v1.1. Created by Shadowmagé - Stormrage EU

-- CONFIG
local iconsize;
local xoff;
local yoff;
local tfont;
local fontsize = 16;
local fdur = 0.7;

local function snr_saveall()
    saved = {}
    saved["iconsize"] = iconsize
    saved["xoff"] = xoff
    saved["yoff"] = yoff
    saved["tfont"] = tfont
    saved["fontsize"] = fontsize
    saved["fdur"] = fdur
end

iconsize = 40   -- Changes the size of the icon
xoff = 0 -- Increase to move right, decrease to move left (note: you can go into minus numbers)
yoff = 0 -- Increase to move up, decrease to move down (note: you can go into minus numbers)
tfont = "Fonts\\FRIZQT__.TTF" -- The file path for the font you wish to use
fontsize = 16 -- Font size
fdur = 0.7 -- Duration of the icon appearing on the screen (range between 0.1 and 1, anything above 1 and stuff gets funky)

SLASH_SNR1 = '/snr';
function SlashCmdList.SNR(msg)
    local command, rest = msg:match("^(%S*)%s*(.-)$");
    print(command.."-"..rest);
    if command == "x" and rest ~= "" then
        xoff = tonumber(rest);
    elseif command == "y"  and rest ~= "" then
        yoff = tonumber(rest);
    end
    snr_saveall();
end

-----------------

local _;


local frameFlashManager = CreateFrame("FRAME");

local FLASHFRAMES = {};
local UIFrameFlashTimers = {};
local UIFrameFlashTimerRefCount = {};

-- Function to see if a frame is already flashing
local function UIFrameIsFlashing(frame)
    for index, value in pairs(FLASHFRAMES) do
        if ( value == frame ) then
            return 1;
        end
    end
    return nil;
end

-- Function to stop flashing
local function UIFrameFlashStop(frame)
    tDeleteItem(FLASHFRAMES, frame);
    frame:SetAlpha(1.0);
    frame.flashTimer = nil;
    if (frame.syncId) then
        UIFrameFlashTimerRefCount[frame.syncId] = UIFrameFlashTimerRefCount[frame.syncId]-1;
        if (UIFrameFlashTimerRefCount[frame.syncId] == 0) then
            UIFrameFlashTimers[frame.syncId] = nil;
            UIFrameFlashTimerRefCount[frame.syncId] = nil;
        end
        frame.syncId = nil;
    end
    if ( frame.showWhenDone ) then
        frame:Show();
    else
        frame:Hide();
    end
end

-- Called every frame to update flashing frames
local function UIFrameFlash_OnUpdate(self, elapsed)
    local frame;
    local index = #FLASHFRAMES;

    -- Update timers for all synced frames
    for syncId, timer in pairs(UIFrameFlashTimers) do
        UIFrameFlashTimers[syncId] = timer + elapsed;
    end

    while FLASHFRAMES[index] do
        frame = FLASHFRAMES[index];
        frame.flashTimer = frame.flashTimer + elapsed;

        if ( (frame.flashTimer > frame.flashDuration) and frame.flashDuration ~= -1 ) then
            UIFrameFlashStop(frame);
        else
            local flashTime = frame.flashTimer;
            local alpha;

            if (frame.syncId) then
                flashTime = UIFrameFlashTimers[frame.syncId];
            end

            flashTime = flashTime%(frame.fadeInTime+frame.fadeOutTime+(frame.flashInHoldTime or 0)+(frame.flashOutHoldTime or 0));
            if (flashTime < frame.fadeInTime) then
                alpha = flashTime/frame.fadeInTime;
            elseif (flashTime < frame.fadeInTime+(frame.flashInHoldTime or 0)) then
                alpha = 1;
            elseif (flashTime < frame.fadeInTime+(frame.flashInHoldTime or 0)+frame.fadeOutTime) then
                alpha = 1 - ((flashTime - frame.fadeInTime - (frame.flashInHoldTime or 0))/frame.fadeOutTime);
            else
                alpha = 0;
            end

            frame:SetAlpha(alpha);
            frame:Show();
        end

        -- Loop in reverse so that removing frames is safe
        index = index - 1;
    end

    if ( #FLASHFRAMES == 0 ) then
        self:SetScript("OnUpdate", nil);
    end
end

-- Function to start a frame flashing
local function UIFrameFlash(frame, fadeInTime, fadeOutTime, flashDuration, showWhenDone, flashInHoldTime, flashOutHoldTime, syncId)
    if ( frame ) then
        local index = 1;
        -- If frame is already set to flash then return
        while FLASHFRAMES[index] do
            if ( FLASHFRAMES[index] == frame ) then
                return;
            end
            index = index + 1;
        end

        if (syncId) then
            frame.syncId = syncId;
            if (UIFrameFlashTimers[syncId] == nil) then
                UIFrameFlashTimers[syncId] = 0;
                UIFrameFlashTimerRefCount[syncId] = 0;
            end
            UIFrameFlashTimerRefCount[syncId] = UIFrameFlashTimerRefCount[syncId]+1;
        else
            frame.syncId = nil;
        end

        -- Time it takes to fade in a flashing frame
        frame.fadeInTime = fadeInTime;
        -- Time it takes to fade out a flashing frame
        frame.fadeOutTime = fadeOutTime;
        -- How long to keep the frame flashing
        frame.flashDuration = flashDuration;
        -- Show the flashing frame when the fadeOutTime has passed
        frame.showWhenDone = showWhenDone;
        -- Internal timer
        frame.flashTimer = 0;
        -- How long to hold the faded in state
        frame.flashInHoldTime = flashInHoldTime;
        -- How long to hold the faded out state
        frame.flashOutHoldTime = flashOutHoldTime;

        tinsert(FLASHFRAMES, frame);

        frameFlashManager:SetScript("OnUpdate", UIFrameFlash_OnUpdate);
    end
end




local formatTime = function(s)
    local day, hour, minute = 86400, 3600, 60
    if s >= day then
        return format("%dd", floor(s/day + 0.5)), s % day
    elseif s >= hour then
        return format("%dh", floor(s/hour + 0.5)), s % hour
    elseif s >= minute then
        return format("%dm", floor(s/minute + 0.5)), s % minute
    elseif s >= minute / 12 then
        return floor(s + 0.5), (s * 100 - floor(s * 100))/100
    end
    return format("%.1f", s), (s * 100 - floor(s * 100))/100
end

-- Hides standard UI error spam frame, since we are
-- replacing it by our icons
UIErrorsFrame:Hide();

local frame = CreateFrame("Frame");
frame:RegisterEvent("UNIT_SPELLCAST_FAILED");
frame:RegisterEvent("UI_ERROR_MESSAGE");
-- frame:RegisterEvent("UNIT_SPELLCAST_SUCCEEDED");
frame:RegisterEvent("ADDON_LOADED");

local function eventHandler(self, event, ...)

    -- Fires on spellcast (either suceeded or failed because of cooldown, etc)
    if event == "UNIT_SPELLCAST_FAILED" or event == "UNIT_SPELLCAST_SUCCEEDED" then
        local unit, spellname, spellrank, spellidcounter, id = ...;
        local start, duration, enabled = GetSpellCooldown(id);
        local name, rank, icon, cost, isFunnel, powerType, castTime, minRange, maxRange = GetSpellInfo(id)
        local seconds = GetTime();
        local timeleft = (start + duration - seconds);

        if name == "Synapse Springs" then else
            if unit == "player" then
                local iconframe = CreateFrame("Frame", nil, UIParent)
                UIFrameFlash(iconframe, 0, fdur, fdur, false, 0, 0)
                iconframe:SetPoint("CENTER", xoff, yoff)
                iconframe:SetSize(iconsize, iconsize)
                iconframe:SetBackdrop({
                    bgFile = icon
                    })
                if event == "UNIT_SPELLCAST_FAILED" then
                    iconframe:SetBackdropColor(1,0.2,0.2);
                    local tr = iconframe:CreateFontString()
                    tr:SetPoint("BOTTOM", 0, 0)
                    tr:SetSize(40, 40)
                    tr:SetFont(tfont, fontsize, "OUTLINE")
                    tr:SetTextColor(1,0.7,0.7)
                    if timeleft < 0 then
                     tr:SetText("ERR")
                    else
                        tr:SetText(formatTime(timeleft))
                    end
                end
                iconframe:SetFrameStrata("BACKGROUND")
            end
        end

    -- fires on UI Error "I need a target!"
    elseif event == "UI_ERROR_MESSAGE" then
        local iconframe = CreateFrame("Frame", nil, UIParent)
        UIFrameFlash(iconframe, 0, fdur, fdur, false, 0, 0)
        iconframe:SetPoint("CENTER", xoff, yoff)
        iconframe:SetSize(iconsize, iconsize)
        iconframe:SetBackdrop({
            bgFile = "Interface\\TargetingFrame\\UI-RaidTargetingIcon_7"
        })
        -- iconframe:SetBackdropColor(1,0.2,0.2);
        iconframe:SetFrameStrata("BACKGROUND")

    -- load options
    elseif event == "ADDON_LOADED" then
        if saved then
            iconsize = saved["iconsize"]
            xoff = saved["xoff"]
            yoff = saved["yoff"]
            tfont = saved["tfont"]
            fontsize = saved["fontsize"]
            fdur = saved["fdur"]
        end
    end
end

frame:SetScript("OnEvent", eventHandler);