namespace PlanTempusAdmin.Models;

public class BackupLog
{
    public int Id { get; set; }

    // Timing
    public DateTime StartedAt { get; set; }
    public DateTime? CompletedAt { get; set; }
    public int? DurationMs { get; set; }

    // Identifikation
    public string BackupType { get; set; } = string.Empty;  // 'forgejo_repos', 'postgres_db', etc.
    public string SourceName { get; set; } = string.Empty;  // repo navn eller db navn
    public string? SourcePath { get; set; }                 // /var/lib/forgejo/repositories/user/repo.git

    // Destination
    public string Destination { get; set; } = string.Empty; // 'azure_blob', 's3', 'local', 'sftp'
    public string? RemotePath { get; set; }                 // azure:container/backups/2024-01-31/repo.tar.gz

    // Resultat
    public string Status { get; set; } = string.Empty;      // 'running', 'success', 'failed', 'partial'
    public long? SizeBytes { get; set; }
    public int? FileCount { get; set; }                     // antal filer i backup

    // Fejlhåndtering
    public string? ErrorMessage { get; set; }
    public string? ErrorCode { get; set; }                  // 'AZURE_UPLOAD_FAILED', 'DISK_FULL', 'TAR_FAILED', etc.
    public int RetryCount { get; set; }

    // Metadata
    public string? Hostname { get; set; }                   // hvilken server kørte backup
    public string? ScriptVersion { get; set; }              // version af backup script
    public string? Checksum { get; set; }                   // SHA256 af backup fil

    public DateTime CreatedAt { get; set; }

    // Legacy compatibility properties for existing pages
    public DateTime Timestamp => StartedAt;
    public string Database => SourceName;
    public TimeSpan? Duration => DurationMs.HasValue ? TimeSpan.FromMilliseconds(DurationMs.Value) : null;
    public string? FilePath => RemotePath ?? SourcePath;
}

public class BackupSummary
{
    public int TotalBackups { get; set; }
    public int SuccessfulBackups { get; set; }
    public int FailedBackups { get; set; }
    public DateTime? LastBackup { get; set; }
    public DateTime? LastSuccessfulBackup { get; set; }
    public long TotalSizeBytes { get; set; }
}

public class RepositorySummary
{
    public string SourceName { get; set; } = string.Empty;
    public string BackupType { get; set; } = string.Empty;
    public int TotalBackups { get; set; }
    public int SuccessfulBackups { get; set; }
    public int FailedBackups { get; set; }
    public DateTime? LastBackup { get; set; }
    public DateTime? LastSuccessfulBackup { get; set; }
    public long TotalSizeBytes { get; set; }
    public long? LastBackupSizeBytes { get; set; }
    public long? PreviousBackupSizeBytes { get; set; }

    public string SizeTrend
    {
        get
        {
            if (!LastBackupSizeBytes.HasValue || !PreviousBackupSizeBytes.HasValue)
                return "unknown";
            if (LastBackupSizeBytes > PreviousBackupSizeBytes * 1.1m)
                return "growing";
            if (LastBackupSizeBytes < PreviousBackupSizeBytes * 0.9m)
                return "shrinking";
            return "stable";
        }
    }
}

public class BackupDashboard
{
    // Overall stats
    public int TotalBackups { get; set; }
    public int SuccessfulBackups { get; set; }
    public int FailedBackups { get; set; }
    public int RunningBackups { get; set; }
    public long TotalSizeBytes { get; set; }
    public double SuccessRate => TotalBackups > 0 ? (double)SuccessfulBackups / TotalBackups * 100 : 0;

    // Time-based
    public DateTime? LastBackup { get; set; }
    public DateTime? LastSuccessfulBackup { get; set; }
    public int BackupsLast24Hours { get; set; }
    public int BackupsLast7Days { get; set; }
    public long SizeLast24Hours { get; set; }
    public long SizeLast7Days { get; set; }

    // Grouped stats
    public List<BackupTypeStat> ByType { get; set; } = new();
    public List<DestinationStat> ByDestination { get; set; } = new();
    public List<HostStat> ByHost { get; set; } = new();
    public List<ErrorStat> TopErrors { get; set; } = new();
    public List<DailyStat> DailyStats { get; set; } = new();

    // Recent activity
    public List<BackupLog> RunningNow { get; set; } = new();
    public List<BackupLog> RecentSuccesses { get; set; } = new();
    public List<BackupLog> RecentFailures { get; set; } = new();
}

public class BackupTypeStat
{
    public string BackupType { get; set; } = string.Empty;
    public int Total { get; set; }
    public int Successful { get; set; }
    public int Failed { get; set; }
    public int Running { get; set; }
    public long TotalSize { get; set; }
    public DateTime? LastBackup { get; set; }
    public double SuccessRate => Total > 0 ? (double)Successful / Total * 100 : 0;
}

public class DestinationStat
{
    public string Destination { get; set; } = string.Empty;
    public int Total { get; set; }
    public int Successful { get; set; }
    public int Failed { get; set; }
    public long TotalSize { get; set; }
    public DateTime? LastBackup { get; set; }
}

public class HostStat
{
    public string Hostname { get; set; } = string.Empty;
    public int Total { get; set; }
    public int Successful { get; set; }
    public int Failed { get; set; }
    public int Running { get; set; }
    public DateTime? LastBackup { get; set; }
    public string? ScriptVersion { get; set; }
}

public class ErrorStat
{
    public string ErrorCode { get; set; } = string.Empty;
    public int Count { get; set; }
    public DateTime? LastOccurrence { get; set; }
    public string? LastMessage { get; set; }
}

public class DailyStat
{
    public DateTime Date { get; set; }
    public int Total { get; set; }
    public int Successful { get; set; }
    public int Failed { get; set; }
    public long TotalSize { get; set; }
}