namespace Lagerbestand.Models;

/// <summary>
/// Site-wide settings stored in the database
/// </summary>
public class SiteSettings
{
    public Guid Id { get; set; } = Guid.NewGuid();
    
    /// <summary>
    /// Unique key for the setting (e.g., "PromoBanner")
    /// </summary>
    public string Key { get; set; } = string.Empty;
    
    /// <summary>
    /// JSON-serialized value of the setting
    /// </summary>
    public string Value { get; set; } = string.Empty;
    
    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
    public DateTime? UpdatedAt { get; set; }
}

/// <summary>
/// Promotion banner settings
/// </summary>
public class PromoBannerSettings
{
    public bool IsEnabled { get; set; }
    public string Title { get; set; } = string.Empty;
    public string Message { get; set; } = string.Empty;
    public DateTime? StartDate { get; set; }
    public DateTime? EndDate { get; set; }
    public bool ShowContactButton { get; set; } = true;
    
    /// <summary>
    /// Check if banner should be shown based on current date and content
    /// </summary>
    public bool ShouldShow()
    {
        // Must be enabled
        if (!IsEnabled) return false;

        // Must have content
        if (string.IsNullOrWhiteSpace(Title) && string.IsNullOrWhiteSpace(Message))
            return false;

        var now = DateTime.UtcNow.Date;

        // Check date range if specified
        if (StartDate.HasValue && now < StartDate.Value.Date)
            return false;

        if (EndDate.HasValue && now > EndDate.Value.Date)
            return false;

        return true;
    }
}

/// <summary>
/// Lexware API connection settings for customer data synchronization
/// </summary>
public class LexwareApiSettings
{
    public bool IsEnabled { get; set; }

    /// <summary>
    /// Lexware API base URL (e.g., https://api.lexoffice.io/v1)
    /// </summary>
    public string BaseUrl { get; set; } = string.Empty;

    /// <summary>
    /// API key for authentication
    /// </summary>
    public string ApiKey { get; set; } = string.Empty;

    /// <summary>
    /// Whether automatic daily sync is enabled
    /// </summary>
    public bool AutoSyncEnabled { get; set; } = true;

    /// <summary>
    /// Time of day for automatic sync (HH:mm format)
    /// </summary>
    public string AutoSyncTime { get; set; } = "02:00";

    /// <summary>
    /// Timestamp of the last successful sync
    /// </summary>
    public DateTime? LastSyncAt { get; set; }

    /// <summary>
    /// Result message from the last sync
    /// </summary>
    public string? LastSyncResult { get; set; }

    /// <summary>
    /// Number of customers synced in last run
    /// </summary>
    public int LastSyncCount { get; set; }

    /// <summary>
    /// Whether the API connection is configured
    /// </summary>
    public bool IsConfigured => !string.IsNullOrWhiteSpace(BaseUrl) && !string.IsNullOrWhiteSpace(ApiKey);
}

/// <summary>
/// Two-Factor Authentication settings stored in SiteSettings
/// </summary>
public class TwoFactorSettings
{
    /// <summary>
    /// Global toggle: when false, no 2FA is used at all
    /// </summary>
    public bool IsEnabled { get; set; }

    /// <summary>
    /// Issuer name shown in authenticator apps (e.g. "Reifen Späth")
    /// </summary>
    public string Issuer { get; set; } = "Reifen Späth Lagerverwaltung";

    /// <summary>
    /// Whether email fallback codes are enabled
    /// </summary>
    public bool EmailFallbackEnabled { get; set; }
}

/// <summary>
/// Session / long-duration usage settings (idle lock, circuit retention).
/// Editable by admins in the Status page.
/// </summary>
public class SessionSettings
{
    public const int DefaultIdleTimeoutMinutes = 60;
    public const int MaxIdleTimeoutMinutes = 60;
    public const int MinIdleTimeoutMinutes = 1;

    public const double DefaultCircuitRetentionHours = 2.0;
    public const double MaxCircuitRetentionHours = 4.0;
    public const double MinCircuitRetentionHours = 0.5;

    /// <summary>
    /// Minutes of inactivity before the browser tab shows a "Confirm to continue" lock overlay.
    /// Range: 1 – 60. Default: 60.
    /// </summary>
    public int IdleTimeoutMinutes { get; set; } = DefaultIdleTimeoutMinutes;

    /// <summary>
    /// Hours a disconnected Blazor Server circuit is retained on the server
    /// before being discarded (allows reconnect without state loss).
    /// Range: 0.5 – 4. Default: 2. Applied at next app restart.
    /// </summary>
    public double CircuitRetentionHours { get; set; } = DefaultCircuitRetentionHours;

    public int GetSafeIdleTimeoutMinutes()
    {
        if (IdleTimeoutMinutes < MinIdleTimeoutMinutes) return MinIdleTimeoutMinutes;
        if (IdleTimeoutMinutes > MaxIdleTimeoutMinutes) return MaxIdleTimeoutMinutes;
        return IdleTimeoutMinutes;
    }

    public double GetSafeCircuitRetentionHours()
    {
        if (CircuitRetentionHours < MinCircuitRetentionHours) return MinCircuitRetentionHours;
        if (CircuitRetentionHours > MaxCircuitRetentionHours) return MaxCircuitRetentionHours;
        return CircuitRetentionHours;
    }
}

/// <summary>
/// SMTP settings for sending email-based 2FA codes and notifications
/// </summary>
public class SmtpSettings
{
    public bool IsEnabled { get; set; }
    public string Host { get; set; } = string.Empty;
    public int Port { get; set; } = 587;
    public string Username { get; set; } = string.Empty;
    public string Password { get; set; } = string.Empty;
    public string FromEmail { get; set; } = string.Empty;
    public string FromName { get; set; } = "Reifen Späth Lagerverwaltung";
    public bool UseSsl { get; set; } = true;

    public bool IsConfigured => !string.IsNullOrWhiteSpace(Host)
        && !string.IsNullOrWhiteSpace(Username)
        && !string.IsNullOrWhiteSpace(FromEmail);
}