using Admin.NET.Plugin.AiDOP.Entity.DataPlatform;

namespace Admin.NET.Plugin.AiDOP.DataPlatform.Executors;

/// <summary>Outbox 入队 + 立即唤醒推送。</summary>
public sealed class MdpOutboxEnqueueService : ITransient
{
    private readonly ISqlSugarClient _db;
    private readonly MdpOutboxWakeSignal _wake;

    public MdpOutboxEnqueueService(ISqlSugarClient db, MdpOutboxWakeSignal wake)
    {
        _db = db;
        _wake = wake;
    }

    /// <summary>
    /// 幂等入队：已存在 status∈(0,1) 的同 idem_key 则跳过。
    /// </summary>
    /// <param name="pulse">为 false 时不立即 Pulse（供调用方在本地事务提交后再唤醒，见 WP10 S1）。默认 true 保持既有行为。</param>
    public async Task<bool> TryEnqueueAsync(MdpOutbox item, CancellationToken ct = default, bool pulse = true)
    {
        if (item == null) throw new ArgumentNullException(nameof(item));
        if (string.IsNullOrWhiteSpace(item.IdemKey))
            throw new ArgumentException("idem_key 不能为空", nameof(item));

        var exists = await _db.Queryable<MdpOutbox>()
            .Where(x => x.IdemKey == item.IdemKey && (x.Status == 0 || x.Status == 1))
            .AnyAsync(ct);
        if (exists) return false;

        item.Status = 0;
        item.RetryCount = 0;
        item.CreateTime = DateTime.Now;
        item.UpdateTime = item.CreateTime;
        await _db.Insertable(item).ExecuteCommandAsync(ct);
        if (pulse) _wake.Pulse();
        return true;
    }
}