namespace Nexus.Api.Services;

public sealed record AgentConfigFileInfo(string FileName, long Size, DateTime ModifiedAt);

public sealed record AgentConfigFileContent(string FileName, string Content, long Size, DateTime ModifiedAt);

public sealed record AgentConfigValidationResult(string Status, string FileKind, IReadOnlyList<string> Errors);

public sealed record AgentConfigBackupResult(string Status, bool BackupCreated);

public sealed record AgentConfigReloadCheckResult(string Status, string Message);

public sealed record AgentConfigFileSaveResult(
    string FileName,
    long Size,
    DateTime ModifiedAt,
    AgentConfigValidationResult Validation,
    AgentConfigBackupResult Backup,
    AgentConfigReloadCheckResult ReloadCheck
);

public sealed record AgentConfigSaveFailure(
    string Code,
    AgentConfigValidationResult Validation,
    AgentConfigBackupResult Backup,
    AgentConfigReloadCheckResult ReloadCheck
);

public sealed record AgentConfigSaveAttempt(
    AgentConfigFileSaveResult? SaveResult,
    AgentConfigSaveFailure? Failure
);

public interface IAgentConfigService
{
    const int MaxConfigFileBytes = 500 * 1024;

    IReadOnlyList<AgentConfigFileInfo> GetConfigFiles(string agentId);
    Task<AgentConfigFileContent?> GetConfigFileAsync(string agentId, string fileName, CancellationToken ct = default);
    Task<AgentConfigSaveAttempt> SaveConfigFileAsync(string agentId, string fileName, string content, CancellationToken ct = default);
}