using InboxIntel.Domain.Enums;

namespace InboxIntel.Infrastructure.Configuration;

public class GoogleOAuthOptions
{
    public const string SectionName = "GoogleOAuth";
    public string ClientId { get; set; } = string.Empty;
    public string ClientSecret { get; set; } = string.Empty;
    /// <summary>Scopes requested. Gmail read + modify (no send).</summary>
    public string[] Scopes { get; set; } =
    {
        "openid", "email", "profile",
        "https://www.googleapis.com/auth/gmail.readonly",
        "https://www.googleapis.com/auth/gmail.modify"
    };
}

public class GmailSyncOptions
{
    public const string SectionName = "GmailSync";
    /// <summary>Message-id list page size (Gmail max is 500).</summary>
    public int PageSize { get; set; } = 500;
    /// <summary>Concurrent Gmail message fetches during sync (kept well under quota).</summary>
    public int MaxParallelism { get; set; } = 8;
    public int MaxRetries { get; set; } = 5;
    /// <summary>Base delay in ms for exponential backoff.</summary>
    public int BackoffBaseMs { get; set; } = 500;
    /// <summary>Cron-like daily sync hour (UTC) for the scheduled worker.</summary>
    public int DailySyncHourUtc { get; set; } = 3;
    /// <summary>
    /// Cap on messages stored during a full sync. 0 = unlimited. In dev this is
    /// set to 1000 so the initial load pulls only the most recent emails.
    /// </summary>
    public int MaxMessages { get; set; } = 0;
}

public class AiOptions
{
    public const string SectionName = "Ai";
    public AiProviderMode Mode { get; set; } = AiProviderMode.Disabled;

    // Ollama (local)
    public string OllamaBaseUrl { get; set; } = "http://localhost:11434";
    public string OllamaModel { get; set; } = "llama3.1";
    // Embedding model for semantic search (per docs/discovery/06). Small, always-on when local.
    public string EmbeddingModel { get; set; } = "nomic-embed-text";

    // OpenAI (cloud, optional)
    public string OpenAiApiKey { get; set; } = string.Empty;
    public string OpenAiModel { get; set; } = "gpt-4o-mini";
}

public class SmtpOptions
{
    public const string SectionName = "Smtp";
    public bool Enabled { get; set; } = false;
    public string Host { get; set; } = string.Empty;
    public int Port { get; set; } = 587;
    public bool UseSsl { get; set; } = true;
    public string User { get; set; } = string.Empty;
    public string Password { get; set; } = string.Empty;
    public string FromAddress { get; set; } = string.Empty;
    public string FromName { get; set; } = "InboxIntel";
}

public class DigestOptions
{
    public const string SectionName = "Digest";
    /// <summary>How often a digest is sent to each opted-in user.</summary>
    public int FrequencyDays { get; set; } = 7;
    /// <summary>Hour (UTC) the background worker checks for due digests.</summary>
    public int SendHourUtc { get; set; } = 8;
}

/// <summary>AUDIT H-3: opt-in local data retention. 0 = disabled (keep forever).</summary>
public class DataRetentionOptions
{
    public const string SectionName = "DataRetention";
    /// <summary>Purge locally stored emails flagged Trashed older than this many days.</summary>
    public int PurgeTrashedAfterDays { get; set; } = 0;
    /// <summary>Purge ALL locally stored emails older than this many days (local copy only).</summary>
    public int PurgeAllAfterDays { get; set; } = 0;
}