local N = nswa

local season_portals = {
    { id = 393273,  label = "AA",   map_id = 2526 }, -- Algeth'ar Academy
    { id = 1254400, label = "WS",   map_id = 2805 }, -- Windrunner Spire
    { id = 1254572, label = "MT",   map_id = 2811 }, -- Magisters' Terrace
    { id = 1254563, label = "NPX",  map_id = 2915 }, -- Nexus-Point Xenas
    { id = 1254559, label = "MC",   map_id = 2874 }, -- Maisara Caverns
    { id = 159898,  label = "SKYR", map_id = 1209 }, -- Skyreach
    { id = 1254555, label = "POS",  map_id = 658  }, -- Pit of Saron
    { id = 1254551, label = "SOT",  map_id = 1753 }, -- Seat of Triumvirate
}

-- mapID from GetActivityInfoTable
-- -------------------------------
-- Triumvirat       1753
-- Xenas            2915
-- Mördergasse      2813
-- Windspire        2805
-- Blendendes Tal   2859
-- Nalorakks Bau    2825
-- Leerennarbe      2923
-- Magister         2811
-- Kavernen         2874
-- Skyreach         1209
-- Saron            658
-- Akademie         2526


local buttons = {}
local index = 0
local size = 36
local spacing = 4
local current_id = nil


local function button_create(spell_id, label, parent_frame)
    local button = CreateFrame("Button", "Nswa_portals_button"..index, parent_frame, "SecureActionButtonTemplate")
    button:SetSize(size, size)

    if index == 0 then
        button:SetPoint("BOTTOMLEFT", parent_frame, "BOTTOMLEFT", 30, -80)
    else
        button:SetPoint("LEFT", buttons[index-1], "RIGHT", spacing, 0)
    end

    button:RegisterForClicks("AnyUp", "AnyDown")
    button:SetAttribute("type", "spell")
    button:SetAttribute("spell", spell_id)

    local icon = button:CreateTexture(nil, "BACKGROUND")
    icon:SetAllPoints()
    icon:SetTexture(C_Spell.GetSpellTexture(spell_id))

    local text = button:CreateFontString(nil, "OVERLAY", "GameFontNormalSmall")
    text:SetPoint("TOP", button, "BOTTOM", 0, -2)
    text:SetText(label)

    button.icon = icon
    button.label = text
    buttons[index] = button
end

local function buttons_clear()
    for _, button in ipairs(buttons) do
        if button and button:IsShown() then
            button:Hide()
            button:SetParent(nil)
        end
    end
    buttons = {}
    index = 0
end

local function button_glow(id, index)
    if not current_id then return end
    if not id then
        local _, id, _, _, name = GetLFGProposal()
        print("INFO: Maybe unknown id: " .. id .. ", name: " .. name)
        return
    end

    if id == current_id then
        local button = buttons[index]
        ActionButtonSpellAlertManager:ShowAlert(button)
    end
end

local function buttons_build(parent_frame)
    index = 0  -- maybe redundant
    for _, data in ipairs(season_portals) do
        local spell_id = data.id
        local label = data.label

        if IsSpellKnown(spell_id) then
            button_create(spell_id, label, parent_frame)
            button_glow(data.map_id, index)
            index = index + 1
        end
    end
end

local function wait_for_pve_frame()
    local frame = CreateFrame("Frame")
    frame:RegisterEvent("LFG_LOCK_INFO_RECEIVED")

    frame:SetScript("OnEvent", function(self, event, ...)
        if event == "LFG_LOCK_INFO_RECEIVED" then
            frame:UnregisterEvent("LFG_LOCK_INFO_RECEIVED")

            PVEFrame:HookScript("OnShow", function()
                buttons_clear()
                buttons_build(PVEFrame)
            end)
        end
    end)
end

function N.portals_info_create(map_id)
    current_id = map_id
end

function N.portals_info_destroy()
    current_id = nil
end

function N.init_portals()
    wait_for_pve_frame()
end