using Microsoft.Extensions.Logging;

namespace Admin.NET.Plugin.AiDOP.DataPlatform;

/// <summary>
/// 中立层写入闸门。来源未登记或与登记不一致时不写中立层，并记 <c>mdp_source_gate_log</c>。
/// </summary>
public sealed class MdpNeutralSourceGate : ITransient
{
    private readonly MdpTenantStdSourceResolver _resolver;
    private readonly ISqlSugarClient _db;
    private readonly ILogger _logger;

    public MdpNeutralSourceGate(MdpTenantStdSourceResolver resolver, ISqlSugarClient db, ILoggerFactory loggerFactory)
    {
        _resolver = resolver;
        _db = db;
        _logger = loggerFactory.CreateLogger(nameof(MdpNeutralSourceGate));
    }

    public async Task<bool> AllowsAsync(
        long tenantId,
        string stdObject,
        string sourceSystem,
        int rowCount = 1,
        string? sampleKeys = null,
        string? syncBatchId = null,
        CancellationToken cancellationToken = default)
    {
        var registered = await _resolver.GetSourceAsync(tenantId, stdObject, cancellationToken);
        if (registered != null
            && string.Equals(registered.SourceSystem, sourceSystem, StringComparison.OrdinalIgnoreCase))
            return true;

        var reason = registered == null ? "SOURCE_NOT_REGISTERED" : "SOURCE_MISMATCH";
        _logger.LogWarning(
            "中立层来源闸门拒绝写入 {Reason} tenant={TenantId} object={StdObject} source={SourceSystem} rows={RowCount}",
            reason, tenantId, stdObject, sourceSystem, rowCount);
        await _db.Ado.ExecuteCommandAsync(
            """
            INSERT INTO mdp_source_gate_log
              (tenant_id, std_object, source_system, gate_reason, row_count, sample_keys, sync_batch_id)
            VALUES (@tenant, @obj, @src, @reason, @rows, @sample, @batch)
            """,
            new
            {
                tenant = tenantId,
                obj = stdObject,
                src = sourceSystem ?? "",
                reason,
                rows = rowCount,
                sample = sampleKeys,
                batch = syncBatchId
            });
        return false;
    }
}