using Admin.NET.Core;
using Admin.NET.Plugin.AiDOP.Dto.SmartOps;
using Admin.NET.Plugin.AiDOP.Entity;
using SqlSugar;

namespace Admin.NET.Plugin.AiDOP.SmartOps;

/// <summary>
/// KPI 计算运行日志查询（只读、分页、脱敏）。租户由 MetricCode 解析，不信任前端；
/// 输出仅可展示字段，不返回 SQL 明文 / 参数快照 / 连接串；错误摘要截断。
/// </summary>
public sealed class AdoSmartOpsKpiRunLogQueryService : ITransient
{
    private const int DefaultPageSize = 20;
    private const int MaxPageSize = 100;
    private const int ErrorMessageMaxLen = 300;

    private readonly ISqlSugarClient _db;

    public AdoSmartOpsKpiRunLogQueryService(ISqlSugarClient db)
    {
        _db = db;
    }

    public async Task<KpiRunLogPageDto> QueryAsync(KpiRunLogQueryDto dto)
    {
        if (string.IsNullOrWhiteSpace(dto.MetricCode))
            throw Oops.Bah("metricCode 必填");

        var moduleCode = AdoSmartOpsKpiBusinessInputService.ResolveModuleCode(dto.MetricCode);
        var tenantId = AdoSmartOpsKpiCalcConfigService.ResolveKpiTenantId(moduleCode);

        var page = dto.Page <= 0 ? 1 : dto.Page;
        var pageSize = dto.PageSize <= 0 ? DefaultPageSize : Math.Min(dto.PageSize, MaxPageSize);
        var status = string.IsNullOrWhiteSpace(dto.Status) ? null : dto.Status.Trim().ToUpperInvariant();

        RefAsync<int> total = 0;
        var rows = await _db.Queryable<AdoSmartOpsKpiCalcRunLog>().ClearFilter<ITenantIdFilter>()
            .Where(x => x.MetricCode == dto.MetricCode && x.TenantId == tenantId)
            .WhereIF(status != null, x => x.Status == status)
            .WhereIF(dto.StartTime != null, x => x.StartedAt >= dto.StartTime!.Value)
            .WhereIF(dto.EndTime != null, x => x.StartedAt <= dto.EndTime!.Value)
            .OrderBy(x => x.StartedAt, OrderByType.Desc)
            .ToPageListAsync(page, pageSize, total);

        return new KpiRunLogPageDto
        {
            Total = total.Value,
            Page = page,
            PageSize = pageSize,
            List = rows.Select(ToItem).ToList(),
        };
    }

    private static KpiRunLogItemDto ToItem(AdoSmartOpsKpiCalcRunLog e) => new()
    {
        Id = e.Id,
        BatchId = e.BatchId,
        MetricCode = e.MetricCode,
        EngineType = e.EngineType,
        VersionNo = e.VersionNo,
        DataSourceCode = e.DataSourceCode,
        BizDate = e.BizDate.ToString("yyyy-MM-dd"),
        StartedAt = e.StartedAt.ToString("yyyy-MM-dd HH:mm:ss"),
        DurationMs = e.DurationMs,
        Status = e.Status,
        RowCount = e.RowCount,
        MetricValue = e.MetricValue,
        ErrorCode = e.ErrorCode,
        ErrorMessage = Truncate(e.ErrorMessage, ErrorMessageMaxLen),
        TriggerType = e.TriggerType,
    };

    private static string? Truncate(string? s, int max) =>
        string.IsNullOrEmpty(s) ? s : (s.Length <= max ? s : s.Substring(0, max) + "…");
}