Mouse DPI and Button Remapping Lua Script

-- rebind: min_sdk=0.1.0
-- rebind: name=Mouse DPI & Button Remapper

local cfg = UI.Schema({
    -- DPI Settings
    dpi_low = UI.Slider(400, {
        min = 100,
        max = 3200,
        step = 50,
        label = "Low DPI",
        group = "DPI Presets",
    }),
    dpi_med = UI.Slider(800, {
        min = 100,
        max = 3200,
        step = 50,
        label = "Medium DPI",
        group = "DPI Presets",
    }),
    dpi_high = UI.Slider(1600, {
        min = 100,
        max = 3200,
        step = 50,
        label = "High DPI",
        group = "DPI Presets",
    }),
    dpi_cycle_key = UI.Keybind("F12", {
        label = "Cycle DPI Key",
        group = "DPI Controls",
    }),
    dpi_low_key = UI.Keybind("F9", {
        label = "Low DPI Key",
        group = "DPI Controls",
    }),
    dpi_med_key = UI.Keybind("F10", {
        label = "Medium DPI Key",
        group = "DPI Controls",
    }),
    dpi_high_key = UI.Keybind("F11", {
        label = "High DPI Key",
        group = "DPI Controls",
    }),

    -- Button Remapping
    remap_m4 = UI.Keybind("4", {
        label = "Mouse4 → Key",
        group = "Button Remapping",
    }),
    remap_m5 = UI.Keybind("5", {
        label = "Mouse5 → Key",
        group = "Button Remapping",
    }),
})

local currentDpi = cfg.dpi_med
local dpiLevels = {}

function OnStart()
    dpiLevels = { cfg.dpi_low, cfg.dpi_med, cfg.dpi_high }
    currentDpi = cfg.dpi_med
    UI.Notify("Mouse Manager loaded. Current DPI: " .. currentDpi, "info")
end

-- Mouse sensitivity scaling (simulated via movement filtering)
local function scaleMouse(dx, dy, targetDpi)
    local baseDpi = 800
    local factor = targetDpi / baseDpi
    return dx * factor, dy * factor
end

-- DPI cycling
local dpiIndex = 2

function OnDown(key)
    -- Cycle through DPI levels
    if key == cfg.dpi_cycle_key then
        dpiIndex = dpiIndex + 1
        if dpiIndex > #dpiLevels then
            dpiIndex = 1
        end
        currentDpi = dpiLevels[dpiIndex]
        UI.Notify("DPI: " .. currentDpi, "info")
        return false
    end

    -- Direct DPI presets
    if key == cfg.dpi_low_key then
        currentDpi = cfg.dpi_low
        dpiIndex = 1
        UI.Notify("DPI: " .. currentDpi .. " (Low)", "info")
        return false
    end

    if key == cfg.dpi_med_key then
        currentDpi = cfg.dpi_med
        dpiIndex = 2
        UI.Notify("DPI: " .. currentDpi .. " (Medium)", "info")
        return false
    end

    if key == cfg.dpi_high_key then
        currentDpi = cfg.dpi_high
        dpiIndex = 3
        UI.Notify("DPI: " .. currentDpi .. " (High)", "info")
        return false
    end

    -- Button remapping
    if key == "Mouse4" then
        HID.Press(cfg.remap_m4)
        return false
    end

    if key == "Mouse5" then
        HID.Press(cfg.remap_m5)
        return false
    end

    return true
end

-- Apply DPI scaling to mouse movement
function OnMove(dx, dy)
    local scaledX, scaledY = scaleMouse(dx, dy, currentDpi)
    HID.Move(scaledX, scaledY)
    return false
end

function OnUp(key)
    return true
end

function OnBlur()
    currentDpi = cfg.dpi_med
    dpiIndex = 2
end