using ZB.MOM.WW.Configuration;

namespace ZB.MOM.WW.ScadaBridge.DataConnectionLayer;

/// <summary>
/// Validates <see cref="DataConnectionOptions"/> at startup (ValidateOnStart) so a
/// malformed "ScadaBridge:DataConnection" appsettings section fails fast at boot with a
/// key-naming message instead of surfacing later at runtime. The intervals drive
/// the reconnect/tag-resolution timers and the seed-read retry loop; a
/// zero/negative duration (or a non-positive <c>SeedReadMaxAttempts</c>) would
/// otherwise produce an opaque failure far from the offending config key.
/// </summary>
public sealed class DataConnectionOptionsValidator : OptionsValidatorBase<DataConnectionOptions>
{
    /// <inheritdoc />
    protected override void Validate(ValidationBuilder builder, DataConnectionOptions options)
    {
        builder.RequireThat(options.ReconnectInterval > TimeSpan.Zero,
            $"ScadaBridge:DataConnection:ReconnectInterval must be a positive duration (was {options.ReconnectInterval}).");

        builder.RequireThat(options.TagResolutionRetryInterval > TimeSpan.Zero,
            $"ScadaBridge:DataConnection:TagResolutionRetryInterval must be a positive duration (was {options.TagResolutionRetryInterval}).");

        builder.RequireThat(options.WriteTimeout > TimeSpan.Zero,
            $"ScadaBridge:DataConnection:WriteTimeout must be a positive duration (was {options.WriteTimeout}).");

        builder.RequireThat(options.SeedReadTimeout > TimeSpan.Zero,
            $"ScadaBridge:DataConnection:SeedReadTimeout must be a positive duration (was {options.SeedReadTimeout}).");

        builder.RequireThat(options.StableConnectionThreshold > TimeSpan.Zero,
            $"ScadaBridge:DataConnection:StableConnectionThreshold must be a positive duration (was {options.StableConnectionThreshold}).");

        builder.RequireThat(options.SeedReadRetryDelay > TimeSpan.Zero,
            $"ScadaBridge:DataConnection:SeedReadRetryDelay must be a positive duration (was {options.SeedReadRetryDelay}).");

        builder.RequireThat(options.SeedReadMaxAttempts > 0,
            $"ScadaBridge:DataConnection:SeedReadMaxAttempts must be positive (was {options.SeedReadMaxAttempts}).");

        builder.RequireThat(options.TagResolutionRetryMaxInterval >= options.TagResolutionRetryInterval,
            "ScadaBridge:DataConnection:TagResolutionRetryMaxInterval must be at least " +
            $"TagResolutionRetryInterval (was {options.TagResolutionRetryMaxInterval} vs {options.TagResolutionRetryInterval}).");

        builder.RequireThat(options.SubscribeBatchSize > 0,
            $"ScadaBridge:DataConnection:SubscribeBatchSize must be positive (was {options.SubscribeBatchSize}).");

        builder.RequireThat(options.SubscribeBatchDelay >= TimeSpan.Zero,
            $"ScadaBridge:DataConnection:SubscribeBatchDelay must not be negative (was {options.SubscribeBatchDelay}).");

        builder.RequireThat(options.SeedReadBatchSize > 0,
            $"ScadaBridge:DataConnection:SeedReadBatchSize must be positive (was {options.SeedReadBatchSize}).");

        builder.RequireThat(options.SeedReadMaxParallelism > 0,
            $"ScadaBridge:DataConnection:SeedReadMaxParallelism must be positive (was {options.SeedReadMaxParallelism}).");

        builder.RequireThat(options.SeedOverallTimeout > TimeSpan.Zero,
            $"ScadaBridge:DataConnection:SeedOverallTimeout must be a positive duration (was {options.SeedOverallTimeout}).");

        builder.RequireThat(options.QualityFlushInterval > TimeSpan.Zero,
            $"ScadaBridge:DataConnection:QualityFlushInterval must be a positive duration (was {options.QualityFlushInterval}).");

        builder.RequireThat(options.MxSupervisoryAdviseParallelism > 0,
            $"ScadaBridge:DataConnection:MxSupervisoryAdviseParallelism must be positive (was {options.MxSupervisoryAdviseParallelism}).");
    }
}
