--[[
    Krowi's World Map Buttons License
        Copyright ©2020 The contents of this library, excluding third-party resources, are
        copyrighted to their authors with all rights reserved.

        This library is free to use and the authors hereby grants you the following rights:

        1.  You may make modifications to this library for private use only, you
            may not publicize any portion of this library. The only exception being you may
            upload to the github website.

        2.  Do not modify the name of this library, including the library folders.

        3.  This copyright notice shall be included in all copies or substantial
            portions of the Software.

        All rights not explicitly addressed in this license are reserved by
        the copyright holders.
]]

local lib = LibStub:NewLibrary('Krowi_WorldMapButtons-1.4', 6);

if not lib then
    return;
end

local version = (GetBuildInfo());
local major = string.match(version, "(%d+)%.(%d+)%.(%d+)(%w?)");
lib.IsClassic = major == "1";
lib.IsTbcClassic = major == "2";
lib.IsWrathClassic = major == "3";
lib.HasNoOverlay = lib.IsClassic or lib.IsTbcClassic or lib.IsWrathClassic;
lib.IsDragonflight = major == "10";
lib.IsTheWarWithin = major == "11";
lib.IsMainline = lib.IsDragonflight or lib.IsTheWarWithin;

local AddButton;

local function Fix1_4_3Buttons()
    if lib.HasNoOverlay then
        for _, button in next, lib.Buttons do
            button:SetParent(WorldMapFrame.ScrollContainer);
            button:SetFrameStrata("TOOLTIP");
        end
    end

    Fix1_4_3Buttons = function() end;
end

lib.XOffset, lib.YOffset = 4, -2;
function lib:SetOffsets(xOffset, yOffset)
    self.XOffset = xOffset or self.XOffset;
    self.YOffset = yOffset or self.YOffset;
end

function lib.SetPoints()
    Fix1_4_3Buttons();

    local xOffset = lib.XOffset;
    for _, button in next, lib.Buttons do
        if button:IsShown() then
            button:SetPoint("TOPRIGHT", button.relativeFrame, -xOffset, lib.YOffset);
            xOffset = xOffset + 32;
        end
    end
end

local function HookDefaultButtons()
    if WorldMapFrame.overlayFrames == nil then
        lib.HookedDefaultButtons = true;
        return;
    end

    for _, f in next, WorldMapFrame.overlayFrames do
        if WorldMapTrackingOptionsButtonMixin and f.OnLoad == WorldMapTrackingOptionsButtonMixin.OnLoad then
            f.KrowiWorldMapButtonsIndex = #lib.Buttons;
            tinsert(lib.Buttons, f);
        end
        if WorldMapTrackingPinButtonMixin and f.OnLoad == WorldMapTrackingPinButtonMixin.OnLoad then
            f.KrowiWorldMapButtonsIndex = #lib.Buttons;
            tinsert(lib.Buttons, f);
        end
        if WorldMapShowLegendButtonMixin and f.OnLoad == WorldMapShowLegendButtonMixin.OnLoad then
            f.KrowiWorldMapButtonsIndex = #lib.Buttons;
            tinsert(lib.Buttons, f);
        end
    end

    lib.HookedDefaultButtons = true;
end

local function PatchWrathClassic()
    if lib.HasNoOverlay and WorldMapFrame.RefreshOverlayFrames == nil then
        WorldMapFrame.RefreshOverlayFrames = function()
        end
    end

    PatchWrathClassic = function() end;
end

function AddButton(button)
    local xOffset = 4 + lib.NumButtons * 32;
    button:SetPoint("TOPRIGHT", WorldMapFrame:GetCanvasContainer(), "TOPRIGHT", -xOffset, -2);
    button.relativeFrame = WorldMapFrame:GetCanvasContainer();
    hooksecurefunc(WorldMapFrame, lib.HasNoOverlay and "OnMapChanged" or "RefreshOverlayFrames", function()
        button:Refresh();
        lib.SetPoints();
    end);

    tinsert(lib.Buttons, button);

    return button;
end

function lib:Add(templateName, templateType)
    if self.Buttons == nil then
        self.Buttons = self.buttons or {}; -- 'Krowi_WorldMapButtons-1.4', 1 compatibility
        if NumKrowi_WorldMapButtons then
            NumKrowi_WorldMapButtons = NumKrowi_WorldMapButtons - 1; -- 'Krowi_WorldMapButtons-1.4', 1 compatibility
        end
        self.NumButtons = NumKrowi_WorldMapButtons or 0; -- 'Krowi_WorldMapButtons-1.4', 1 compatibility
    end

    if not self.HookedDefaultButtons then
        HookDefaultButtons();
    end

    PatchWrathClassic();

    self.NumButtons = self.NumButtons + 1;
    local button = CreateFrame(templateType, "Krowi_WorldMapButtons" .. self.NumButtons, lib.HasNoOverlay and WorldMapFrame.ScrollContainer or WorldMapFrame, templateName);

    if lib.HasNoOverlay then
        button:SetFrameStrata("TOOLTIP");
    end

    return AddButton(button);
end