--[[
@module  tsb_wavein_page
@summary 波形输入页面
@version 1.0
@date    2026.03.18
@author  李一玮
@usage
本文件是波形输入页面，展示波形数据和控制功能。
]]

local tsb_wavein_page = {}

-- 页面UI元素
local main_container = nil
local scroll_container = nil
local chart_timer = nil          -- 数据推送定时器ID
local page_active = false        -- 页面是否活跃，用于定时器安全
local common_ui = require("tsb_common_page")

local chart = nil              -- 图表对象
local freq_label = nil         -- 频率显示标签
local vmax_label = nil         -- 电压最大值标签
local vmin_label = nil         -- 电压最小值标签
local trigger_threshold_input = nil -- 触发阈值输入框
local trigger_type_btn = nil   -- 触发类型按钮
local trigger_mode_btn = nil   -- 触发方式按钮

-- 控制参数
local time_scale = "100ms"     -- 时间档位
local vertical_scale = "1V"     -- 垂直档位
local trigger_threshold = "0"   -- 触发阈值
local trigger_type = "上升沿"   -- 触发类型：上升沿、下降沿、双边沿
local trigger_mode = "自动"     -- 触发方式：自动、普通、单次

-- 创建数字键盘
local function create_numeric_keyboard()
    return airui.keyboard({
        x = 0,
        y = 0,
        w = 480,
        h = 220,
        mode = "numeric",
        auto_hide = true,
        bg_color = 0xf1f1f1,
        on_commit = function()
            log.info("keyboard", "commit")
        end
    })
end

-- 创建UI
function tsb_wavein_page.create_ui()
    main_container = airui.container({
        x = 0,
        y = 0,
        w = 480,
        h = 320,
        color = 0xF5F5F5,
    })

    --------------------- 标题栏 ------------------------
    local title_bar = airui.container({
        parent = main_container,
        x = 0,
        y = 0,
        w = 480,
        h = 30,
        color = 0xFFD93D,
    })

    airui.label({
        parent = title_bar,
        text = "波形输入",
        x = 200,
        y = 8,
        w = 80,
        h = 20,
        font_size = 16,
        color = 0xFFFFFF,
    })
    
    -- 标题栏公共信息展示
    common_ui.add_battery_display(title_bar)
    common_ui.create_back_button(title_bar, tsb_wavein_page.cleanup)
    ---------------------------------------------------

    -- 主容器
    scroll_container = airui.container({
        parent = main_container,
        x = 0,
        y = 30,
        w = 480,
        h = 270,
        color = 0xFFFFFF,
    })

    -- 图表区域（左上方）
    local chart_container = airui.container({
        parent = scroll_container,
        x = 10,
        y = 10,
        w = 320,
        h = 200,
        color = 0xFFFFFF,
        radius = 8,
        border_width = 1,
        border_color = 0xDDDDDD,
    })

    chart = airui.chart({
        parent = chart_container,
        x = 10,
        y = 10,
        w = 300,
        h = 180,
        y_min = 0,
        y_max = 100,
        point_count = 100,              -- 增加点数以适应宽屏
        update_mode = "shift",           -- 滚动模式
        line_color = 0x00b4ff,
        line_width = 2,
        hdiv = 5,
        vdiv = 4,
    })

    -- 预置一组初始值（平滑过渡）
    chart:set_values(1, {50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 68, 66, 64, 62, 60, 58, 56, 54, 52, 50, 48, 46, 44, 42, 40, 38, 36, 34, 32, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50})

    -- 控制区域（右侧）
    local control_container = airui.container({
        parent = scroll_container,
        x = 340,
        y = 10,
        w = 130,
        h = 155,
        color = 0xFFFFFF,
        radius = 8,
        border_width = 1,
        border_color = 0xDDDDDD,
    })

    local control_y = 10

    -- 时间档位
    airui.label({
        parent = control_container,
        text = "时间档位",
        x = 10,
        y = control_y,
        w = 110,
        h = 20,
        font_size = 12,
        color = 0x333333,
    })
    airui.dropdown({
        parent = control_container,
        x = 10,
        y = control_y + 20,
        w = 100,
        h = 25,
        options = {"1s", "500ms", "200ms", "100ms", "50ms", "20ms", "10ms", "5ms", "2ms", "1ms", "500us"},
        default_index = 3, -- 默认100ms
        on_change = function(self, idx)
            local options = {"1s", "500ms", "200ms", "100ms", "50ms", "20ms", "10ms", "5ms", "2ms", "1ms", "500us"}
            time_scale = options[idx + 1]
            log.info("chart", "时间档位: " .. time_scale)
        end
    })
    control_y = control_y + 50

    -- 垂直档位
    airui.label({
        parent = control_container,
        text = "垂直档位",
        x = 10,
        y = control_y,
        w = 110,
        h = 20,
        font_size = 12,
        color = 0x333333,
    })
    airui.dropdown({
        parent = control_container,
        x = 10,
        y = control_y + 20,
        w = 100,
        h = 25,
        options = {"10V", "5V", "2V", "1V", "500mv", "200mv"},
        default_index = 3, -- 默认1V
        on_change = function(self, idx)
            local options = {"10V", "5V", "2V", "1V", "500mv", "200mv"}
            vertical_scale = options[idx + 1]
            log.info("chart", "垂直档位: " .. vertical_scale)
        end
    })
    control_y = control_y + 50

    -- 水平偏移
    airui.label({
        parent = control_container,
        text = "水平偏移",
        x = 10,
        y = control_y,
        w = 110,
        h = 20,
        font_size = 12,
        color = 0x333333,
    })
    local h_offset_container = airui.container({
        parent = control_container,
        x = 10,
        y = control_y + 20,
        w = 110,
        h = 25,
        color = 0xFFFFFF,
        radius = 4,
    })
    airui.button({
        parent = h_offset_container,
        text = "←",
        x = 5,
        y = 2,
        w = 40,
        h = 20,
        on_click = function()
            log.info("chart", "水平偏移左")
        end
    })
    airui.button({
        parent = h_offset_container,
        text = "→",
        x = 60,
        y = 2,
        w = 40,
        h = 20,
        on_click = function()
            log.info("chart", "水平偏移右")
        end
    })
    control_y = control_y + 50

    -- 垂直偏移
    airui.label({
        parent = control_container,
        text = "垂直偏移",
        x = 10,
        y = control_y,
        w = 110,
        h = 20,
        font_size = 12,
        color = 0x333333,
    })
    local v_offset_container = airui.container({
        parent = control_container,
        x = 10,
        y = control_y + 20,
        w = 110,
        h = 25,
        color = 0xFFFFFF,
        radius = 4,
    })
    airui.button({
        parent = v_offset_container,
        text = "↑",
        x = 5,
        y = 2,
        w = 40,
        h = 20,
        on_click = function()
            log.info("chart", "垂直偏移上")
        end
    })
    control_y = control_y + 35
    airui.button({
        parent = v_offset_container,
        text = "↓",
        x = 60,
        y = 2,
        w = 40,
        h = 20,
        on_click = function()
            log.info("chart", "垂直偏移下")
        end
    })

    -- 触发控制区域
    local trigger_container = airui.container({
        parent = scroll_container,
        x = 340,
        y = 170,
        w = 130,
        h = 90,
        color = 0xFFFFFF,
        radius = 8,
        border_width = 1,
        border_color = 0xDDDDDD,
    })

    -- 触发阈值
    airui.label({
        parent = trigger_container,
        text = "触发阈值",
        x = 10,
        y = 5,
        w = 60,
        h = 20,
        font_size = 12,
        color = 0x333333,
    })
    trigger_threshold_input = airui.textarea({
        parent = trigger_container,
        x = 10,
        y = 25,
        w = 70,
        h = 25,
        text = "500",
        max_len = 5,
        keyboard = create_numeric_keyboard()
    })
    airui.label({
        parent = trigger_container,
        text = "mv",
        x = 90,
        y = 30,
        w = 30,
        h = 20,
        font_size = 12,
        color = 0x333333,
    })

    -- 触发类型
    trigger_type_btn = airui.button({
        parent = trigger_container,
        text = "上升沿",
        x = 10,
        y = 55,
        w = 55,
        h = 25,
        font_size = 10,
        on_click = function(self)
            if trigger_type == "上升沿" then
                trigger_type = "下降沿"
            elseif trigger_type == "下降沿" then
                trigger_type = "双边沿"
            else
                trigger_type = "上升沿"
            end
            self:set_text(trigger_type)
            log.info("chart", "触发类型: " .. trigger_type)
        end
    })

    -- 触发方式
    trigger_mode_btn = airui.button({
        parent = trigger_container,
        text = "自动",
        x = 70,
        y = 55,
        w = 50,
        h = 25,
        font_size = 10,
        on_click = function(self)
            if trigger_mode == "自动" then
                trigger_mode = "普通"
            elseif trigger_mode == "普通" then
                trigger_mode = "单次"
            else
                trigger_mode = "自动"
            end
            self:set_text(trigger_mode)
            log.info("chart", "触发方式: " .. trigger_mode)
        end
    })

    -- 信息显示区域（图表下方）
    local info_container = airui.container({
        parent = scroll_container,
        x = 10,
        y = 220,
        w = 320,
        h = 40,
        color = 0xFFFFFF,
        radius = 8,
        border_width = 1,
        border_color = 0xDDDDDD,
    })

    airui.label({
        parent = info_container,
        text = "频率:",
        x = 5,
        y = 10,
        w = 40,
        h = 20,
        font_size = 13,
        color = 0x333333,
    })
    freq_label = airui.label({
        parent = info_container,
        text = "10.0 Hz",
        x = 40,
        y = 10,
        w = 60,
        h = 20,
        font_size = 13,
        color = 0x333333,
    })

    airui.label({
        parent = info_container,
        text = "V大:",
        x = 110,
        y = 10,
        w = 60,
        h = 20,
        font_size = 13,
        color = 0x333333,
    })
    vmax_label = airui.label({
        parent = info_container,
        text = "80.0 mV",
        x = 140,
        y = 10,
        w = 65,
        h = 20,
        font_size = 13,
        color = 0x333333,
    })

    airui.label({
        parent = info_container,
        text = "V小:",
        x = 220,
        y = 10,
        w = 80,
        h = 20,
        font_size = 13,
        color = 0x333333,
    })
    vmin_label = airui.label({
        parent = info_container,
        text = "20.0 mV",
        x = 250,
        y = 10,
        w = 65, 
        h = 20,
        font_size = 13,
        color = 0x333333,
    })

    -- 底部信息
    common_ui.create_status_bar(main_container)
end

-- 定时器回调：模拟10Hz数据推送
local function chart_timer_cb()
    if not page_active then
        return      -- 页面已销毁，不再更新
    end

    -- 简单的正弦波模拟
    local tick = _G.__chart_tick or 0
    tick = tick + 1
    _G.__chart_tick = tick

    local base = 50 + 30 * math.sin(tick * 0.1)
    local noise = math.random(-3, 3)
    local value = math.floor(base + noise + 0.5)
    -- 限制范围
    if value < 0 then value = 0 end
    if value > 100 then value = 100 end

    if chart then
        chart:push(1, value)
    end

    -- 每50个周期更新一次信息显示
    if tick % 50 == 0 then
        if freq_label then
            freq_label:set_text("10.0 Hz")
        end
        if vmax_label then
            vmax_label:set_text("80.0 mV")
        end
        if vmin_label then
            vmin_label:set_text("20.0 mV")
        end
        log.info("chart", "running 10Hz, sample=", value)
    end
end

-- 初始化页面
function tsb_wavein_page.init(params)
    tsb_wavein_page.create_ui()
    page_active = true

    -- 启动定时器（100ms = 10Hz）
    if chart_timer then
        sys.timerStop(chart_timer)
    end
    chart_timer = sys.timerLoopStart(chart_timer_cb, 100)
end

-- 清理页面
function tsb_wavein_page.cleanup()
    page_active = false
    if chart_timer then
        sys.timerStop(chart_timer)
        chart_timer = nil
    end

    if main_container then
        main_container:destroy()
        main_container = nil
        scroll_container = nil
        chart = nil
        freq_label = nil
        vmax_label = nil
        vmin_label = nil
        trigger_threshold_input = nil
        trigger_type_btn = nil
        trigger_mode_btn = nil
    end
end

return tsb_wavein_page