local air780_helper = {
    -- 是否正在读取串口数据
}
air780_helper.reading = false
air780_helper.cs_index = 1
local sys = require("sys")
local utils = require("utils")
local config = require("config")
local util_notify = require("util_notify")

local uart_timeout = 100


-- 使用UART 1接口与Air780E通信
-- ESP32 <--> Air780E
-- 02(UART1_TX) <--> 31(UART1_RXD)
-- 03(UART1_RX) <--> 30(UART1_TXD)
local uart_setup_result = uart.setup(config.UART_ID, 115200, 8, 1)
if uart_setup_result ~= 0 then
    log.error("air780_helper", "UART初始化失败，返回值："..uart_setup_result.."，ESP32将重启")
    sys.wait(1000)
    rtos.reboot()
else
    log.info("air780_helper", "UART初始化成功")
end

-- 串口读缓冲区
local send_queue = {}

-- 注册串口接收事件回调
uart.on(config.UART_ID, "receive", function(id, length)
    air780_helper.reading = true
    local s = ""
    repeat
        -- log.error("air780_helper", "开始设备串口")
        s = uart.read(id, length)
        if #s > 0 then
            table.insert(send_queue, s)
            sys.timerStart(sys.publish, config.UART_TIMEOUT, "UART_READY")
            -- sys.publish("UART_READY")
        end
    until s == ""
end)

sys.subscribe("UART_READY", function()
    led_helper.shut_working_led()
    led_helper.blink_status_led(config.LED_BLINK_DURATION.initializing)
    -- 拼接所有收到的数据
    local data = table.concat(send_queue)
    log.info("air780_helper", '读取短信完成',data)
    -- 读取完成后清空缓冲区
    utils.clear_table(send_queue)
    air780_helper.reading = false
    log.info("air780_helper", "去NEW_MSG处理消息类型和内容")
    sys.publish("NEW_MSG",data)

    -- while #data > 0 do
    --     air780_helper.reading = false
    --     sys.publish(config.UART_NEW_MSG,data)
    -- end
end)

-- 收到串口新消息 添加到发送队列
sys.subscribe("NEW_MSG", function(data)
    if data == nil then
        return
    end
    if #data == 0 then
        return
    end
    local msg = json.decode(data)
    if utils.table_len(msg) <= 0 then
        return
    end
    if msg == nil then
        return
    end
    local numbers = fskv.kv_get("numbers")
    -- log.info("air780_helper", "测试numbers", json.encode(numbers),type(numbers))
    local cs_index = air780_helper.cs_index - 1
    if utils.is_empty(msg.sms) == false then
        air780_helper.reading = false
        msg.index = tostring(cs_index)
        -- 是否屏蔽自检信息
        local disable_boot = fskv.kv_get("disable_boot")
        if disable_boot == 1 and msg.type == "boot" then
            return
        end
        -- 如果没有读到号码就是用设置的号码
        if utils.is_empty(msg.to) then
            if fskv.kv_get("numbers") then
                if numbers[cs_index] ~= nil then
                    msg.to = numbers[cs_index]
                end
            end
        end
        if fskv.kv_get("hostname") then
            msg.hostname = fskv.kv_get("hostname")
        else
            msg.hostname =  "weiguo_" .. wlan.getMac()
        end
        if utils.is_empty(msg.from) and msg.type == "boot" then
            msg.from = nil
            msg.sms = "收到设备通知:" .. msg.sms
            msg.index = nil
        end
        util_notify.add(msg)
        utils.clear_table(msg)
        msg = nil
    end
end)
-- 发送AT指令
function air780_helper.send_at_command(command)
    uart.write(config.UART_ID, command)
    uart.write(config.UART_ID, "\r\n")
    log.debug("air780_helper", "发送AT指令\""..command.."\"")
end 
-- 发送AT指令并等待指定topic
function air780_helper.send_at_command_and_wait(command, topic_listen_to, timeout)
    while true do
        air780_helper.send_at_command(command)
        local is_successful, r1, r2, r3 = sys.waitUntil(topic_listen_to, timeout or 1000)
        if is_successful then
            return r1, r2, r3
        end
    end
end

return air780_helper