using Admin.NET.Core;
using Admin.NET.Plugin.AiDOP.Entity.S8;
using Furion.Schedule;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using SqlSugar;

namespace Admin.NET.Plugin.AiDOP.Job;

/// <summary>
/// S8-LOG-RETENTION-CLEANUP-P1-2：S8 日志保留清理。
/// 每日凌晨分批物理 DELETE 三张日志表过期数据：
///  - ado_s8_detection_log：30 天保留（detected_at &lt; now - 30d）
///  - ado_s8_notification_log：90 天保留（created_at &lt; now - 90d）
///  - SysJobTriggerRecord：14 天保留（CreatedTime &lt; now - 14d）
/// 默认 OFF；env override AIDOP_S8_LOG_CLEANUP_ENABLED=true 强制开启。
/// 分批：单批 CleanupBatchSize 行；单表单次 Job 最多 MaxCleanupBatchesPerTable 批；
/// 达到单次上限后剩余过期数据在下一日继续清理，避免单次 Job 长时间占用 DB。
/// SqlSugar Deleteable 不支持 Take，采用 Queryable.Take(N).Select(Id) + Deleteable.Where(ids.Contains) 两步删除。
/// 与 Admin.NET.Core/Job/LogJob.cs 同走 [Daily]（00:00），两 Job 删除不同表无锁冲突。
/// AdoS8DetectionLog.is_deleted 字段对 Queryable 不做默认过滤，本批一并物理删除软删行与活跃过期行。
/// </summary>
[JobDetail("job_s8_log_retention_cleanup", Description = "S8 日志保留清理",
    GroupName = "default", Concurrent = false)]
[Daily(TriggerId = "trigger_s8_log_retention_cleanup", Description = "每日凌晨执行")]
public class S8LogRetentionCleanupJob : IJob
{
    private readonly IServiceScopeFactory _scopeFactory;
    private readonly ILogger _logger;

    // 禁用日志单进程内只输出一次，避免每次触发都刷日志。
    private static int _firstDisabledLogged;

    // env override 命名沿用 P0 批次的 AIDOP_* 前缀（与 S8WatchSchedulerJob 等一致）。
    private const string EnvCleanupEnabled = "AIDOP_S8_LOG_CLEANUP_ENABLED";

    // 已拍板分级保留天数。
    private const int DetectionLogRetentionDays = 30;
    private const int NotificationLogRetentionDays = 90;
    private const int JobTriggerRecordRetentionDays = 14;

    // 分批参数：单批 1000 行；单表单次 Job 最多 50 批（5w 行/表/日上限），残余下一日继续。
    private const int CleanupBatchSize = 1000;
    private const int MaxCleanupBatchesPerTable = 50;

    public S8LogRetentionCleanupJob(IServiceScopeFactory scopeFactory, ILoggerFactory loggerFactory)
    {
        _scopeFactory = scopeFactory;
        _logger = loggerFactory.CreateLogger(nameof(S8LogRetentionCleanupJob));
    }

    public async Task ExecuteAsync(JobExecutingContext context, CancellationToken stoppingToken)
    {
        // 默认 OFF；env override AIDOP_S8_LOG_CLEANUP_ENABLED=true 强制开启。
        // 与 P0 Scheduler:Enabled / S8:Scheduler:Enabled 独立，本批不复用既有 gate。
        var envRaw = Environment.GetEnvironmentVariable(EnvCleanupEnabled);
        if (!bool.TryParse(envRaw, out var enabled) || !enabled)
        {
            if (Interlocked.Exchange(ref _firstDisabledLogged, 1) == 0)
            {
                _logger.LogInformation(
                    "S8LogRetentionCleanupJob 被配置禁用：{EnvName} 未设置或非 true",
                    EnvCleanupEnabled);
            }
            return;
        }

        using var scope = _scopeFactory.CreateScope();
        var db = scope.ServiceProvider.GetRequiredService<ISqlSugarClient>().CopyNew();

        var totalDetection = 0;
        var totalNotification = 0;
        var totalTrigger = 0;

        try
        {
            totalDetection = await CleanupDetectionLogAsync(db, stoppingToken);
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "ado_s8_detection_log 清理失败");
        }

        try
        {
            totalNotification = await CleanupNotificationLogAsync(db, stoppingToken);
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "ado_s8_notification_log 清理失败");
        }

        try
        {
            totalTrigger = await CleanupJobTriggerRecordAsync(db, stoppingToken);
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "SysJobTriggerRecord 清理失败");
        }

        _logger.LogInformation(
            "S8LogRetentionCleanupJob 本轮删除摘要：detection_log={DetectionCount} notification_log={NotificationCount} sys_job_trigger_record={TriggerCount}",
            totalDetection, totalNotification, totalTrigger);
    }

    private async Task<int> CleanupDetectionLogAsync(ISqlSugarClient db, CancellationToken token)
    {
        var cutoff = DateTime.Now.AddDays(-DetectionLogRetentionDays);
        var total = 0;
        for (var i = 0; i < MaxCleanupBatchesPerTable; i++)
        {
            if (token.IsCancellationRequested) break;
            var ids = await db.Queryable<AdoS8DetectionLog>()
                .Where(x => x.DetectedAt < cutoff)
                .Take(CleanupBatchSize)
                .Select(x => x.Id)
                .ToListAsync();
            if (ids.Count == 0) break;
            var affected = await db.Deleteable<AdoS8DetectionLog>()
                .Where(x => ids.Contains(x.Id))
                .ExecuteCommandAsync(token);
            total += affected;
            if (ids.Count < CleanupBatchSize) break;
        }
        return total;
    }

    private async Task<int> CleanupNotificationLogAsync(ISqlSugarClient db, CancellationToken token)
    {
        var cutoff = DateTime.Now.AddDays(-NotificationLogRetentionDays);
        var total = 0;
        for (var i = 0; i < MaxCleanupBatchesPerTable; i++)
        {
            if (token.IsCancellationRequested) break;
            var ids = await db.Queryable<AdoS8NotificationLog>()
                .Where(x => x.CreatedAt < cutoff)
                .Take(CleanupBatchSize)
                .Select(x => x.Id)
                .ToListAsync();
            if (ids.Count == 0) break;
            var affected = await db.Deleteable<AdoS8NotificationLog>()
                .Where(x => ids.Contains(x.Id))
                .ExecuteCommandAsync(token);
            total += affected;
            if (ids.Count < CleanupBatchSize) break;
        }
        return total;
    }

    private async Task<int> CleanupJobTriggerRecordAsync(ISqlSugarClient db, CancellationToken token)
    {
        var cutoff = DateTime.Now.AddDays(-JobTriggerRecordRetentionDays);
        var total = 0;
        for (var i = 0; i < MaxCleanupBatchesPerTable; i++)
        {
            if (token.IsCancellationRequested) break;
            var ids = await db.Queryable<SysJobTriggerRecord>()
                .Where(x => x.CreatedTime != null && x.CreatedTime < cutoff)
                .Take(CleanupBatchSize)
                .Select(x => x.Id)
                .ToListAsync();
            if (ids.Count == 0) break;
            var affected = await db.Deleteable<SysJobTriggerRecord>()
                .Where(x => ids.Contains(x.Id))
                .ExecuteCommandAsync(token);
            total += affected;
            if (ids.Count < CleanupBatchSize) break;
        }
        return total;
    }
}