-- AltSystem Core
-- Addon initialization, slash command registration, and TRP3 integration.

AltSystem = AltSystem or {}
AltSystem.State = {
    selectedSkillIndex   = 1,
    selectedItemIndex    = 1,  -- 1 = No item
    selectedDefenseIndex = 1,  -- 1 = Base armor
    shieldEnabled        = false,
}

-- Initialization on ADDON_LOADED
local frame = CreateFrame("Frame")
frame:RegisterEvent("ADDON_LOADED")

frame:SetScript("OnEvent", function(self, event, arg1)
    if event == "ADDON_LOADED" and arg1 == "AltSystem" then
        AltSystem:Init()
        AltSystem:RegisterTRP3Module()
    end
end)

function AltSystem:Init()
    -- Register slash command /altsystem
    SLASH_ALTSYSTEM1 = "/altsystem"
    SlashCmdList["ALTSYSTEM"] = function()
        AltSystem:ToggleWindow()
    end

    print("|cff00ccffAltSystem|r loaded. Type /altsystem to open.")
end

function AltSystem:ToggleWindow()
    if AltSystem.MainFrame then
        if AltSystem.MainFrame:IsShown() then
            AltSystem.MainFrame:Hide()
        else
            AltSystem.MainFrame:Show()
        end
    end
end

-- Register as a TRP3 module so our onStart runs in the correct lifecycle phase
-- (after the toolbar module is initialized, but before WORKFLOW_ON_FINISH locks it)
function AltSystem:RegisterTRP3Module()
    if not TRP3_API or not TRP3_API.module then
        return
    end

    local MODULE_STRUCTURE = {
        ["name"] = "AltSystem",
        ["description"] = "AltSystem rolling window toolbar button",
        ["version"] = 1.000,
        ["id"] = "altsystem_module",
        ["onStart"] = function()
            AltSystem:RegisterTRP3Button()
        end,
        ["minVersion"] = 3,
        ["requiredDeps"] = {
            {"trp3_tool_bar", 1},
        },
    }

    TRP3_API.module.registerModule(MODULE_STRUCTURE)
end

-- TRP3 toolbar button registration (called from the TRP3 module onStart)
function AltSystem:RegisterTRP3Button()
    if TRP3_API and TRP3_API.toolbar then
        local toolbarButton = {
            id = "altsystem_toolbar_btn",
            icon = "INV_Misc_Dice_01",
            configText = "AltSystem",
            tooltip = "AltSystem",
            tooltipSub = "Open the AltSystem rolling window",
            onClick = function(_, _, button)
                if button == "LeftButton" then
                    AltSystem:ToggleWindow()
                end
            end,
            visible = 1,
        }
        TRP3_API.toolbar.toolbarAddButton(toolbarButton)
    end
end