using MoviconWebApi.Entities;
using FreeSql;

namespace MoviconWebApi.API.ClearStaticApi
{
    /// <summary>
    /// 清洗统计数据访问类
    /// </summary>
    public static class Data
    {
        /// <summary>
        /// 获取清洗统计数据
        /// </summary>
        /// <param name="request">请求参数</param>
        /// <param name="freeSql">FreeSql实例</param>
        /// <returns>清洗统计响应</returns>
        internal static async Task<ClearStaticResponse?> GetClearStatic(ClearStaticRequest request, IFreeSql freeSql)
        {
            try
            {
                // 获取当前日期信息
                var today = DateTime.Today;
                var firstDayOfMonth = new DateTime(today.Year, today.Month, 1);
                var firstDayOfYear = new DateTime(today.Year, 1, 1);

                // 本地辅助函数：把分钟（字符串）汇总为小时（四舍五入到2位小数）
                static decimal SumMinutesToHours(IEnumerable<string?> minutesList)
                {
                    decimal totalMinutes = 0m;
                    foreach (var s in minutesList)
                    {
                        if (string.IsNullOrWhiteSpace(s)) continue;
                        if (decimal.TryParse(s, out var m)) totalMinutes += m;
                    }
                    return Math.Round(totalMinutes / 60m, 2);
                }

                // 帮助方法：为每个统计项单独构建基础选择器（避免条件累积）
                ISelect<ClearData> BuildSelector()
                {
                    var sel = freeSql.Select<ClearData>();
                    if (!string.IsNullOrWhiteSpace(request.DeviceCode))
                        sel = sel.Where(x => x.DeviceCode == request.DeviceCode);
                    return sel;
                }

                // 计算累计作业数量（记录数即作业数）
                var totalJobCount = await BuildSelector().CountAsync();

                // 计算本年度作业数
                var yearJobCount = await BuildSelector()
                    .Where(x => x.CreateTime >= firstDayOfYear)
                    .CountAsync();

                // 计算本月作业数
                var monthJobCount = await BuildSelector()
                    .Where(x => x.CreateTime >= firstDayOfMonth)
                    .CountAsync();

                // 计算今日作业数
                var todayJobCount = await BuildSelector()
                    .Where(x => x.CreateTime >= today)
                    .CountAsync();

                // 计算累计作业时长（来自 ClearData.Test_FrameworkPerModelCleaningDuration，单位：分钟）
                var totalJobHours = SumMinutesToHours(
                    await BuildSelector().ToListAsync(x => x.Test_FrameworkPerModelCleaningDuration)
                );

                // 计算本年作业时长
                var yearJobHours = SumMinutesToHours(
                    await BuildSelector().Where(x => x.CreateTime >= firstDayOfYear)
                                         .ToListAsync(x => x.Test_FrameworkPerModelCleaningDuration)
                );

                // 计算本月作业时长
                var monthJobHours = SumMinutesToHours(
                    await BuildSelector().Where(x => x.CreateTime >= firstDayOfMonth)
                                         .ToListAsync(x => x.Test_FrameworkPerModelCleaningDuration)
                );

                // 计算今日作业时长
                var todayJobHours = SumMinutesToHours(
                    await BuildSelector().Where(x => x.CreateTime >= today)
                                         .ToListAsync(x => x.Test_FrameworkPerModelCleaningDuration)
                );

                // 返回结果
                return new ClearStaticResponse
                {
                    TotalJobCount = (int)totalJobCount,
                    YearJobCount = (int)yearJobCount,
                    MonthJobCount = (int)monthJobCount,
                    TodayJobCount = (int)todayJobCount,
                    TotalJobHours = Math.Round(totalJobHours, 2),
                    YearJobHours = Math.Round(yearJobHours, 2),
                    MonthJobHours = Math.Round(monthJobHours, 2),
                    TodayJobHours = Math.Round(todayJobHours, 2),

                    UpdateTime = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")
                };
            }
            catch (Exception ex)
            {
                // 记录异常日志
                Console.WriteLine($"获取清洗统计数据失败：{ex.Message}");
                return null;
            }
        }
    }
}