using System.Collections.Generic;
using System.Linq;
using Sozsoft.Platform;

namespace Sozsoft.Mcp;

/// <summary>
/// /mcp ucunda yayinlanan arac adlari. Ayni degerler MCP Servers ekranindaki
/// <c>AllowedTools</c> alaninin secenek listesini besler; buraya bir arac eklenirse ekranin
/// statik lookup listesi de guncellenir.
/// </summary>
public static class McpToolNames
{
    public const string ServerInfo = "server_info";
    public const string ListLists = "list_lists";
    public const string DescribeList = "describe_list";
    public const string SearchSchema = "search_schema";
    public const string QueryList = "query_list";
    public const string RunSelect = "run_select";
    public const string ListQueries = "list_queries";
    public const string RunQuery = "run_query";
    public const string InsertRow = "insert_row";
    public const string UpdateRow = "update_row";
    public const string DeleteRow = "delete_row";

    /// <summary>
    /// Veri yazan araclar. Sunucu kaydinda <c>AllowWrite</c> kapaliysa bunlar arac listesinde
    /// hic yer almaz.
    /// </summary>
    public static readonly string[] WriteTools = [InsertRow, UpdateRow, DeleteRow];

    /// <summary>
    /// Sunucu kaydi olmasa da acik kalan araclar. Istemcinin baglantisinin neden bos
    /// gorundugunu anlayabilmesi icin gereklidir.
    /// </summary>
    public static readonly string[] AlwaysAvailableTools = [ServerInfo];

    /// <summary>
    /// Kullanicinin uygulamada da sahip olmasi gereken yetki. MCP yetki vermez: ham SQL'i
    /// uygulamada SQL Query Manager'i kullanabilen, veri yazmayi yazma yetkisi olan kullanici
    /// gorur. Listede olmayan araclar kendi icinde liste bazli yetkiyle suzulur.
    /// </summary>
    public static readonly IReadOnlyDictionary<string, string> RequiredPermissions = new Dictionary<string, string>
    {
        [RunSelect] = PlatformConsts.AppCodes.SqlQueryManagers.Default,
        [InsertRow] = PlatformConsts.AppCodes.DeveloperKits.McpServers.Write,
        [UpdateRow] = PlatformConsts.AppCodes.DeveloperKits.McpServers.Write,
        [DeleteRow] = PlatformConsts.AppCodes.DeveloperKits.McpServers.Write,
    };

    /// <summary>Yayinlanan tum araclar, arac listesindeki siralarina gore.</summary>
    public static readonly string[] All =
    [
        ServerInfo,
        ListLists,
        DescribeList,
        SearchSchema,
        QueryList,
        RunSelect,
        ListQueries,
        RunQuery,
        InsertRow,
        UpdateRow,
        DeleteRow
    ];

    /// <summary>
    /// <c>AllowedTools</c> alaninda secilebilen araclar. Her zaman acik olanlar secenek
    /// olarak sunulmaz; onlari kapatmak mumkun degildir.
    /// </summary>
    public static IEnumerable<string> SelectableTools
        => All.Where(name => !AlwaysAvailableTools.Contains(name));
}