Module:Heartrate

local p = {}

function p.getHeartRate(frame)
    -- 获取传入参数
    local args = frame.args
    local apiUrl = args.url
    
    -- 验证URL参数
    if not apiUrl or apiUrl == "" then
        return "错误：缺少API URL参数"
    end
    
    -- 发起HTTP GET请求
    local response
    local status, err = pcall(function()
        response = mw.ext.externaldata.getWebData {url = args.url}
    end)
    
    -- 检查请求是否成功
    if not status or not response then
        return "错误：API请求失败 - " .. (err or "未知错误")
    end
    
    if response.status ~= 200 then
        return "错误：API返回HTTP状态码 " .. response.status
    end
    
    -- 解析JSON数据
    local jsonData
    status, jsonData = pcall(mw.text.jsonDecode, response.body)
    if not status or type(jsonData) ~= "table" then
        return "错误：JSON解析失败"
    end
    
    -- 验证数据结构并提取心率值
    if jsonData.message == "ok" 
        and type(jsonData.data) == "table" 
        and type(jsonData.data.heart_rate) == "number" then
        
        return jsonData.data.heart_rate
    else
        return "错误：无效的数据结构"
    end
end

return p