-- 陀螺仪视差模块：传感器监听 + 3D视差效果 + 传感器卡片组件
local sensor = {}

-- ========== 模块私有变量（不对外暴露） ==========
local dexLoader = nil
local MySensorManager = nil
local SwitchButtonClass = nil
local sensorListener = nil
local BackV = nil
local SensorV = nil
local noticeView = nil
local lastDeltaX = 0
local lastDeltaY = 0
local mIsVertical = true
local mIsShowing = true
local mConfig = {}

-- ========== 内部工具：复用外部传入的公共方法 ==========
local function getpx(val)
    return mConfig.getpx(val)
end

local function getRes(name)
    return mConfig.getRes(name)
end

-- ========== 核心：传感器事件监听 ==========
local function createSensorListener()
    return luajava.createProxy('android.hardware.SensorEventListener', {
        onSensorChanged = function(event)
            -- 悬浮窗隐藏时停止视差更新，节省性能
            if not mIsShowing then return end

            local sensorList = table.list(event.values)
            -- 根据横竖屏自动切换坐标轴
            local deltaX = sensorList[mIsVertical and 2 or 1]
            local deltaY = sensorList[mIsVertical and 1 or 2]

            -- 低通滤波，平滑抖动
            local alpha = 0.5
            deltaX = alpha * deltaX + (1 - alpha) * (lastDeltaX or 0)
            deltaY = alpha * deltaY + (1 - alpha) * (lastDeltaY or 0)
            lastDeltaX = deltaX
            lastDeltaY = deltaY

            -- 死区阈值，微小晃动不触发
            local threshold = 0.1
            if math.abs(deltaX) < threshold then deltaX = 0 end
            if math.abs(deltaY) < threshold then deltaY = 0 end

            -- 背景层：慢速度视差
            local transX1 = BackV:getTranslationX() + deltaX * 2
            BackV:setTranslationX(math.max(-mConfig.dp20, math.min(mConfig.dp20, transX1)))

            -- 前景层：快速度视差，营造3D感
            local transX2 = SensorV:getTranslationX() + deltaX * 5
            local transY2 = SensorV:getTranslationY() - deltaY * 2
            transY2 = math.max(-mConfig.DP10, math.min(mConfig.DP10, transY2))
            SensorV:setTranslationX(transX2)
            SensorV:setTranslationY(transY2)
        end,
        onAccuracyChanged = function() end
    })
end

-- ========== 构建传感器卡片视图 ==========
local function buildSensorCard()
    local layout = {
        LinearLayout,
        layout_width='match_parent',
        gravity='center',
        {
            MaterialCardView,
            layout_width='200dp',
            layout_height='100dp',
            useCompatPadding=false,
            cardElevation='5dp',
            layout_margin='5dp',
            cardBackgroundColor='#00f00000',
            strokeColor=0x00ffffff,
            __onCreate=function(v)
                v:setRadius(getpx('10dp') / 2)
            end,
            {
                LinearLayout,
                layout_width='250dp',
                layout_height='150dp',
                layout_gravity='center',
                orientation='horizontal',
                gravity='center',
                background=getRes('grb'),
                onClick=function()
                    sensor.reset() -- 点击重置视差位置
                end,
                onTouch = mConfig.dragHandler, -- 保留原拖拽逻辑
                __onFinish=function(v)
                    BackV = v
                    -- 视图加载完成后初始化传感器管理器
                    if MySensorManager and sensorListener then
                        MySensorManager(mConfig.context, sensorListener)
                    end
                end,
                {
                    LinearLayout,
                    layout_width='160dp',
                    layout_height='126dp',
                    background=getRes('grc'),
                    __onFinish=function(v)
                        SensorV = v
                    end,
                }
            },
            -- 底部公告跑马灯
            {
                TextView,
                textColor='#ffffff',
                textSize='10sp',
                ellipsize='marquee',
                id=luajava.ids['ggt'],
                scrollHorizontally=true,
                layout_width='match_parent',
                background='#bb000000',
                singleLine=true,
                focusable=true,
                layout_height='wrap_content',
                layout_gravity='bottom',
                __onFinish=function(v)
                    noticeView = v
                    v:setSelected(true)
                    if mConfig.typeface then
                        v:setTypeface(mConfig.typeface)
                    end
                end,
            },
        }
    }
    return luajava.loadlayout(layout)
end

-- ========== 对外公开接口 ==========

--- 初始化模块
--- @param config table 依赖配置：context、getpx、getRes、dragHandler、typeface、isVertical、isShowing
function sensor.init(config)
    mConfig = config
    mIsVertical = config.isVertical ~= nil and config.isVertical or true
    mIsShowing = config.isShowing ~= nil and config.isShowing or true

    -- 加载传感器dex包
    dexLoader = dex.loadfile('/sdcard/Violet/图片/sensor.dex')
    MySensorManager = dexLoader:loadClass('com.changan.CACore.MySensorManager')
    SwitchButtonClass = dexLoader:loadClass('com.changan.CACore.SwitchButton')

    -- 创建传感器监听
    sensorListener = createSensorListener()

    -- 预计算尺寸常量
    mConfig.dp20 = getpx('20dp')
    mConfig.DP10 = getpx('10dp')
end

--- 获取传感器卡片视图，直接插入主界面即可
function sensor.getView()
    return buildSensorCard()
end

--- 重置视差位置到原点
function sensor.reset()
    if BackV then
        BackV:setTranslationX(0)
        BackV:setTranslationY(0)
    end
    if SensorV then
        SensorV:setTranslationX(0)
        SensorV:setTranslationY(0)
    end
end

--- 更新横竖屏状态，自动切换坐标轴
--- @param isVertical boolean
function sensor.setOrientation(isVertical)
    mIsVertical = isVertical
end

--- 更新悬浮窗显示状态，隐藏时停止视差更新
--- @param isShowing boolean
function sensor.setShowing(isShowing)
    mIsShowing = isShowing
end

--- 设置公告文本
--- @param text string
function sensor.setNotice(text)
    if noticeView then
        luajava.runUiThread(function()
            noticeView:setText(text)
        end)
    end
end

--- 获取SwitchButton类（兼容原有开关控件）
function sensor.getSwitchButtonClass()
    return SwitchButtonClass
end

--- 销毁模块，释放资源
function sensor.destroy()
    sensorListener = nil
    BackV = nil
    SensorV = nil
    noticeView = nil
    dexLoader = nil
    MySensorManager = nil
    SwitchButtonClass = nil
end

return sensor