using System;
using System.Collections.Generic;
using System.Data;
using System.Globalization;
using System.Linq;
using System.Text.Json;
using System.Text.Json.Nodes;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authorization;
using Microsoft.Extensions.Configuration;
using Sozsoft.Mcp.Dtos;
using Sozsoft.Mcp.Services;
using Sozsoft.Platform;
using Sozsoft.Platform.Data.Seeds;
using Sozsoft.Platform.DeveloperKit;
using Sozsoft.Platform.Entities;
using Sozsoft.Platform.Enums;
using Sozsoft.Platform.ListForms;
using Sozsoft.Platform.ListForms.Select;
using Volo.Abp;
using Volo.Abp.Application.Dtos;
using Volo.Abp.Domain.Repositories;
using Volo.Abp.PermissionManagement;

namespace Sozsoft.Mcp;

/// <summary>
/// Ekran ve bilesen gelistirme yuzeyi. Uretim Wizard ve Custom Components servislerinden
/// gecer: menu, yetki, dil anahtari, seed dosyasi ve bagimlilik kurallari ekrandaki yolla
/// aynidir, yetki kontrolu de o servislerin kendi politikalarindan gelir. Invoke/Write yetkisi
/// yalnizca MCP kapisidir, arkadaki yetkinin yerine gecmez.
/// </summary>
[Authorize(PlatformConsts.AppCodes.DeveloperKits.McpServers.Invoke)]
public class McpDevelopAppService(
    IMcpServerConfigProvider serverConfigProvider,
    IMcpDevGuide devGuide,
    IMcpTableCreator tableCreator,
    IMcpSqlObjectWriter sqlObjectWriter,
    IListFormWizardAppService wizardAppService,
    ICustomComponentAppService componentAppService,
    IListFormSelectAppService listFormSelectAppService,
    IRepository<Menu, Guid> menuRepository,
    IRepository<PermissionDefinitionRecord, Guid> permissionRepository,
    IRepository<DevRequest, Guid> devRequestRepository,
    IMcpDevRequestTimesheetRecorder timesheetRecorder,
    IModuleDocAppService moduleDocAppService,
    IConfiguration configuration)
    : McpAppService(serverConfigProvider), IMcpDevelopAppService
{
    private const string DefaultGuideDocument = "lowcode";

    /// <summary>Index cevabinda listelenen en derin baslik; daha derini bolum istenince gorunur.</summary>
    private const int IndexHeadingLevel = 3;

    /// <summary>Baslikla eslesmeyen terim icin listelenen en fazla bolum.</summary>
    private const int GuideSearchMaxResults = 15;

    /// <summary>Custom Components ekraninin tek sayfada dondurebildigi ust sinir.</summary>
    private const int ComponentPageSize = 1000;

    private const string DevRequestUpdatePermission = PlatformConsts.AppCodes.DevRequests + ".Update";

    /// <summary>Liste ekrani aciklamasinin (DescTr/DescEn) en az satir ve karakter sayisi.</summary>
    private const int MinDescriptionLines = 3;
    private const int MinDescriptionLength = 150;

    /// <summary>Talep ekranindaki alt gorev tarih kutusunun okudugu bicim.</summary>
    private const string SubTaskDateFormat = "yyyy-MM-dd";

    /// <summary>verify_wizard cevabindaki kontrol adlari.</summary>
    private static class VerifyChecks
    {
        public const string WizardFile = "wizard_file";
        public const string Install = "install";
        public const string Menu = "menu";
        public const string Permission = "permission";
        public const string Select = "select";
        public const string Component = "component";
        public const string SeedClosure = "seed_closure";
    }

    public async Task<McpDevGuideDto> GetDevGuideAsync(string? document, string? section)
    {
        await EnsureToolAllowedAsync(McpToolNames.GetDevGuide);

        if (string.IsNullOrWhiteSpace(section))
        {
            var headings = await devGuide.GetHeadingsAsync();
            if (headings.Count == 0)
            {
                throw new UserFriendlyException(L[McpErrorCodes.DevGuideUnavailable, McpDevGuide.ConfigurationKey]);
            }

            return new McpDevGuideDto
            {
                Sections = [.. headings
                    .Where(h => h.Level <= IndexHeadingLevel)
                    .Where(h => string.IsNullOrWhiteSpace(document) || string.Equals(h.Document, document, StringComparison.OrdinalIgnoreCase))
                    .Select(ToDto)]
            };
        }

        var result = await FindGuideSectionAsync(document, section);
        if (result is null)
        {
            // Baslik olmayan bir terim (editor, alan adi) istenebilir; hata yerine terimin gectigi
            // bolumler, o da yoksa baslik listesi doner ki model bir sonraki istegi secebilsin.
            var matches = await devGuide.SearchAsync(section, GuideSearchMaxResults);
            if (matches.Count > 0)
            {
                return new McpDevGuideDto
                {
                    Content = L[McpErrorCodes.DevGuideSearchMatches, section],
                    Sections = [.. matches.Select(ToDto)]
                };
            }

            var headings = await devGuide.GetHeadingsAsync();
            return new McpDevGuideDto
            {
                Content = L[McpErrorCodes.DevGuideSectionNotFound, section],
                Sections = [.. headings.Where(h => h.Level <= IndexHeadingLevel).Select(ToDto)]
            };
        }

        return new McpDevGuideDto
        {
            Heading = ToDto(result.Heading),
            Content = result.Content,
            Sections = [.. result.Children.Select(ToDto)]
        };
    }

    /// <summary>
    /// Bolum once istenen belgede, sonra diger belgelerde numara ya da baslik metniyle aranir;
    /// model terimi hangi belgede oldugunu bilmeden isteyebilir.
    /// </summary>
    private async Task<McpDevGuideSection?> FindGuideSectionAsync(string? document, string section)
    {
        var first = string.IsNullOrWhiteSpace(document) ? DefaultGuideDocument : document;
        foreach (var candidate in McpDevGuide.Documents.Keys.OrderBy(key => !string.Equals(key, first, StringComparison.OrdinalIgnoreCase)))
        {
            var result = await devGuide.GetSectionAsync(candidate, section);
            if (result is not null)
            {
                return result;
            }
        }

        return null;
    }

    /// <summary>
    /// Tablo tasarimcisiyla ayni yetkiyi ister: ham DDL liste yetkilerini asar, Develop yalnizca
    /// MCP kapisidir.
    /// </summary>
    public async Task<McpCreateTableResultDto> CreateTableAsync(McpCreateTableRequestDto input)
    {
        Check.NotNull(input, nameof(input));
        await EnsureToolAllowedAsync(McpToolNames.CreateTable);
        await AuthorizationService.CheckAsync(PlatformConsts.AppCodes.SqlQueryManagers.Default);

        var created = await tableCreator.CreateAsync(new McpTableDefinition(
            input.TableName,
            [.. (input.Columns ?? []).Select(column => new McpTableColumn(
                column.Name, column.Type, column.MaxLength, column.IsNullable, column.DefaultValue))],
            input.FullAudited,
            input.MultiTenant,
            [.. (input.Indexes ?? []).Select(index => new McpTableIndex(index.Columns ?? [], index.Unique))],
            [.. (input.ForeignKeys ?? []).Select(fk => new McpTableForeignKey(fk.Column, fk.ReferencedTable, fk.ReferencedColumn, fk.OnDelete))]));

        await timesheetRecorder.RecordAsync(McpTimesheetTexts.CreateTable, created.TableName);

        return new McpCreateTableResultDto
        {
            TableName = created.TableName,
            Script = created.Script,
            SeedFilePath = created.SeedFilePath
        };
    }

    /// <summary>
    /// Tablo tasarimcisiyla ayni yetkiyi ister: SQL Query Manager'daki view/procedure/function
    /// kaydinin karsiligidir. Nesneyi DB Migrate kurar.
    /// </summary>
    public async Task<McpSqlObjectResultDto> SaveSqlObjectAsync(string sqlServerScript, string postgreSqlScript)
    {
        await EnsureToolAllowedAsync(McpToolNames.SaveSqlObject);
        await AuthorizationService.CheckAsync(PlatformConsts.AppCodes.SqlQueryManagers.Default);

        var saved = sqlObjectWriter.Save(sqlServerScript, postgreSqlScript);
        await timesheetRecorder.RecordAsync(McpTimesheetTexts.SaveSqlObject, saved.Name);

        return new McpSqlObjectResultDto
        {
            Name = saved.Name,
            Kind = saved.Kind,
            SeedFilePaths = [saved.SqlServerPath, saved.PostgreSqlPath]
        };
    }

    /// <summary>
    /// SQL Query Manager'daki CRUD endpoint diyaloguyla ayni endpoint kumesini
    /// (<see cref="CrudEndpointSeedFileDto.Generate"/>) yalnizca <c>crud/{Entity}.json</c> seed dosyasina
    /// yazar; kayitlari DB Migrate ekler (<c>CrudEndpointSeedApplier</c>). Yetki diyalogunkiyle aynidir.
    /// </summary>
    public async Task<McpCrudEndpointsResultDto> GenerateCrudEndpointsAsync(string entityName, string? operationTypes, string? objectType)
    {
        await EnsureToolAllowedAsync(McpToolNames.GenerateCrudEndpoints);
        await AuthorizationService.CheckAsync(PlatformConsts.AppCodes.SqlQueryManagers.CrudEndpoints);

        // Tasarimcidaki gibi sema oneki atilir: endpoint yolu yalnizca nesne adini tasir.
        var entity = entityName?.Split('.')[^1].Trim('[', ']', '"', ' ') ?? string.Empty;
        if (CrudEndpointSeedFileDto.SafeFileName(entity) is null)
        {
            throw new UserFriendlyException(L[McpErrorCodes.InvalidIdentifier, entityName ?? string.Empty]);
        }

        var seedFile = CrudEndpointSeedFileDto.Generate(entity, operationTypes, objectType, Clock.Now.ToUniversalTime());
        seedFile.Write(configuration);
        await timesheetRecorder.RecordAsync(McpTimesheetTexts.GenerateCrudEndpoints, entity);

        return new McpCrudEndpointsResultDto
        {
            EntityName = entity,
            SeedFilePath = $"{SeedPathResolver.CrudFolder}/{CrudEndpointSeedFileDto.SafeFileName(entity)}.json",
            Endpoints = [.. seedFile.Endpoints.Select(e => $"{e.Method} {e.Path}{(e.IsActive ? string.Empty : " [inactive]")}")]
        };
    }

    public async Task<List<WizardFileInfoDto>> GetWizardsAsync(string? search)
    {
        await EnsureToolAllowedAsync(McpToolNames.ListWizards);

        var files = await wizardAppService.GetFiles();
        if (string.IsNullOrWhiteSpace(search))
        {
            return files;
        }

        return [.. files.Where(file =>
            Contains(file.FileName, search) || Contains(file.WizardName, search) ||
            Contains(file.ListFormCode, search) || Contains(file.CustomComponentName, search))];
    }

    public async Task<McpWizardFileDto> GetWizardAsync(string fileName)
    {
        await EnsureToolAllowedAsync(McpToolNames.GetWizard);

        var seed = await wizardAppService.GetFile(fileName);

        // Model dosyayi Claude Code'un depoda gordugu bicimde gorur; deploy_wizard ayni bicimi
        // geri kabul eder.
        using var document = JsonDocument.Parse(seed.ToSeedJson());

        return new McpWizardFileDto { FileName = fileName, Seed = document.RootElement.Clone() };
    }

    public async Task<WizardFileInfoDto?> DeployWizardAsync(McpWizardDeployRequestDto input)
    {
        Check.NotNull(input, nameof(input));
        await EnsureToolAllowedAsync(McpToolNames.DeployWizard);

        var wizard = ParseWizard(input.Wizard);
        wizard.EditFileName = string.IsNullOrWhiteSpace(input.ReplaceFileName) ? null : input.ReplaceFileName.Trim();
        EnsureDetailedDescription(wizard);

        // Menu sirasi modelin karari degildir: yeni ekran kardeslerinin sonuna eklenir (deploy
        // bagimlilik sirasiyla yapildigi icin lookup kaynagi tuketen ekranin ustunde kalir),
        // guncelleme ekranin mevcut yerini korur.
        var previous = wizard.EditFileName is null ? null : (await wizardAppService.GetFile(wizard.EditFileName)).Wizard;
        wizard.MenuOrder = previous?.MenuOrder ?? 0;

        // Alt form sekmesi ana kayit her degistiginde yeniden sorgulanmaz; MCP yeni baglanti
        // acarken yenilemeyi kapali yazar. Var olan baglantida kullanicinin ekrandan verdigi
        // deger korunur.
        var previousRefresh = (previous?.SubForms ?? [])
            .Where(subForm => !string.IsNullOrWhiteSpace(subForm.Code))
            .GroupBy(subForm => subForm.Code, StringComparer.OrdinalIgnoreCase)
            .ToDictionary(group => group.Key, group => group.First().IsRefresh, StringComparer.OrdinalIgnoreCase);
        foreach (var subForm in wizard.SubForms ?? [])
            subForm.IsRefresh = subForm.Code is not null && previousRefresh.GetValueOrDefault(subForm.Code);

        // Tek gruplu duzenleme formunda grup basligi popup basligini tekrarlar; baslik yalnizca
        // birden fazla grubu birbirinden ayirmak icin yazilir.
        var editGroups = wizard.Groups
            .Where(group => group.Items.Any(item => item.IncludeInEditingForm && item.FieldName != wizard.KeyFieldName))
            .ToList();
        if (editGroups.Count == 1)
            editGroups[0].Caption = string.Empty;

        // Satirlar deploy'dan once dogrulanir; gecersiz girdi yarim bir deploy birakmaz.
        var seedRows = await ParseSeedRowsAsync(input.SeedRows, wizard);

        // Wizard dosyasi onu ureten talebi tasir; Wizard Manager talebi gosterir ve talebin
        // butun wizard'larini birlikte export eder. Bag modelin girdisinden degil etkin talepten gelir.
        wizard.DevRequestId = await timesheetRecorder.GetActiveRequestIdAsync();

        await wizardAppService.Create(wizard);

        var files = await wizardAppService.GetFiles();
        var file = files.FirstOrDefault(file => string.Equals(file.WizardName, wizard.WizardName?.Trim(), StringComparison.OrdinalIgnoreCase));

        if (file != null && seedRows.Count > 0)
            await WriteSeedRowsAsync(file.FileName, seedRows);

        await timesheetRecorder.RecordAsync(McpTimesheetTexts.DeployWizard, file?.FileName ?? wizard.WizardName, seedRows.Count);

        return file;
    }

    /// <summary>
    /// Liste ekraninin aciklamasi basliktaki bilgi simgesinde (ⓘ) gosterilir ve ekranin kullanim
    /// kilavuzudur: ne ise yaradigi, menude/hangi ekranin sekmesinde durdugu, ana alanlari, otomatik
    /// hesaplar ve iliskili ekranlar (lowcode §4.4.2). Tek satirlik aciklama bu ihtiyaci karsilamadigi
    /// icin MCP deploy'u kisa aciklamayi reddeder.
    /// </summary>
    private void EnsureDetailedDescription(ListFormWizardDto wizard)
    {
        if (wizard.ComponentKind == WizardComponentKindEnum.Custom)
            return;

        static bool IsDetailed(string? text) =>
            !string.IsNullOrWhiteSpace(text) &&
            text.Trim().Length >= MinDescriptionLength &&
            text.Split('\n').Count(line => !string.IsNullOrWhiteSpace(line)) >= MinDescriptionLines;

        if (!IsDetailed(wizard.DescTr) || !IsDetailed(wizard.DescEn))
            throw new UserFriendlyException(L[McpErrorCodes.WizardDescriptionTooShort, MinDescriptionLines, MinDescriptionLength]);
    }

    /// <summary>
    /// Demo satirlarini okur ve ekranin alanlarina gore dogrular. Satirlar yalnizca SeedData acik
    /// liste ekraninda kabul edilir: migrate onlari ekranin veri dosyasindan ekler.
    /// </summary>
    private async Task<List<Dictionary<string, JsonElement>>> ParseSeedRowsAsync(string? json, ListFormWizardDto wizard)
    {
        if (string.IsNullOrWhiteSpace(json))
            return [];

        if (wizard.ComponentKind == WizardComponentKindEnum.Custom || !wizard.SeedData)
            throw new UserFriendlyException(L[McpErrorCodes.SeedRowsNotAllowed]);

        List<Dictionary<string, JsonElement>>? rows;
        try
        {
            rows = JsonSerializer.Deserialize<List<Dictionary<string, JsonElement>>>(json);
        }
        catch (JsonException)
        {
            rows = null;
        }

        if (rows is null || rows.Any(row => row is null))
            throw new UserFriendlyException(L[McpErrorCodes.SeedRowsInvalid]);

        var fields = wizard.Groups.SelectMany(group => group.Items).Select(item => item.FieldName)
            .Append(wizard.KeyFieldName)
            .Where(name => !string.IsNullOrWhiteSpace(name))
            .ToHashSet(StringComparer.OrdinalIgnoreCase);

        var unknown = rows.SelectMany(row => row.Keys).Where(key => !fields.Contains(key))
            .Distinct(StringComparer.OrdinalIgnoreCase).ToList();
        if (unknown.Count == 0)
            return rows;

        var screenFields = string.Join(", ", fields);
        var owners = await FindSameTableScreensAsync(wizard, unknown);
        if (owners.Count == 0)
            throw new UserFriendlyException(L[McpErrorCodes.SeedRowsUnknownFields, string.Join(", ", unknown), screenFields]);

        // Ayni tablonun baska ekraninda (cogunlukla alt form sekmesi) alan olan kolon migrate'te
        // bu ekranin veri dosyasindan yazilmaz; model kolonun nerede durdugunu gorurse alani ekrana
        // ekleyip ya da satirdan cikarip tekrar dener.
        var placement = string.Join("; ", owners.Select(owner => $"{owner.Key}: {string.Join(", ", owner.Value)}"));
        throw new UserFriendlyException(L[McpErrorCodes.SeedRowsFieldsOnOtherScreens, string.Join(", ", unknown), placement, screenFields]);
    }

    /// <summary>
    /// Bilinmeyen kolonlari ayni tabloyu okuyan diger wizard ekranlarinin alanlarinda arar; sonuc
    /// ekran kodundan o ekranda bulunan kolonlara eslemedir. Ekran listesi wizard dosyalarindan
    /// okunur, migrate bekleyen ekranlar da dahildir.
    /// </summary>
    private async Task<Dictionary<string, List<string>>> FindSameTableScreensAsync(ListFormWizardDto wizard, List<string> columns)
    {
        var owners = new Dictionary<string, List<string>>(StringComparer.OrdinalIgnoreCase);
        var table = wizard.SelectCommand?.Trim();
        if (string.IsNullOrWhiteSpace(table))
            return owners;

        var wizardName = wizard.WizardName?.Trim();
        foreach (var file in await wizardAppService.GetFiles())
        {
            if (file.ComponentKind == WizardComponentKindEnum.Custom ||
                string.Equals(file.WizardName, wizardName, StringComparison.OrdinalIgnoreCase) ||
                string.Equals(file.FileName, wizard.EditFileName, StringComparison.OrdinalIgnoreCase))
                continue;

            var seed = await wizardAppService.GetFile(file.FileName);
            if (!string.Equals(seed.Wizard?.SelectCommand?.Trim(), table, StringComparison.OrdinalIgnoreCase))
                continue;

            var found = columns
                .Where(column => (seed.Fields ?? []).Any(field => string.Equals(field.FieldName, column, StringComparison.OrdinalIgnoreCase)))
                .ToList();
            if (found.Count > 0)
                owners[seed.ListForm?.ListFormCode ?? file.ListFormCode ?? file.WizardName] = found;
        }

        return owners;
    }

    /// <summary>
    /// Demo satirlarini ekranin veri seed hedefine (<c>ListForm.SeedFilePath</c>; tanima gore tek
    /// dosya ya da satir klasoru) yazar; veritabanina dokunmaz. Migrate ekrani kurduktan sonra
    /// <c>ListFormSeedDataApplier</c> satirlari ekler ve kiraci/audit alanlarini doldurur. Guid anahtar
    /// burada uretilir: dosya her uygulandiginda ayni kayda karsilik gelir. Hedefte ayni icerikli satir
    /// varsa (tekrar deploy) yeniden eklenmez.
    /// </summary>
    private async Task WriteSeedRowsAsync(string fileName, List<Dictionary<string, JsonElement>> rows)
    {
        var listForm = (await wizardAppService.GetFile(fileName)).ListForm;
        var target = ListFormSeedTarget.Create(SeedPathResolver.GetRootPath(configuration), listForm?.SeedFilePath);
        if (listForm == null || target == null)
            throw new UserFriendlyException(L[McpErrorCodes.SeedRowsNotAllowed]);

        var keyFieldName = listForm.KeyFieldName;
        var existing = (await target.ReadRowsAsync()).Select(row => RowContent(row, keyFieldName)).ToHashSet(StringComparer.Ordinal);
        var added = new List<(object Key, Dictionary<string, object> Row)>();

        foreach (var row in rows)
        {
            var values = row.ToDictionary(item => item.Key, item => (object)item.Value);
            if (!existing.Add(RowContent(values, keyFieldName)))
                continue;

            if (listForm.KeyFieldDbSourceType == DbType.Guid && !values.Keys.Contains(keyFieldName, StringComparer.OrdinalIgnoreCase))
                values[keyFieldName] = GuidGenerator.Create();

            added.Add((values.GetValueOrDefault(keyFieldName) ?? string.Empty, values));
        }

        // Satir klasorunde her satir anahtariyla adlanan dosyadadir; anahtarsiz satir yazilamaz.
        if (added.Count > 0 && (await target.UpsertRowsAsync(listForm.ListFormCode, keyFieldName, added)).Count > 0)
            throw new UserFriendlyException(L[McpErrorCodes.SeedRowsInvalid]);
    }

    /// <summary>Satirin anahtar disindaki icerigi; tekrar deploy'da ayni satiri tanimak icin.</summary>
    private static string RowContent(Dictionary<string, object> row, string keyFieldName) =>
        string.Join('\u001f', row
            .Where(item => !string.Equals(item.Key, keyFieldName, StringComparison.OrdinalIgnoreCase))
            .OrderBy(item => item.Key, StringComparer.OrdinalIgnoreCase)
            .Select(item => $"{item.Key.ToLowerInvariant()}={JsonSerializer.Serialize(item.Value)}"));

    /// <summary>
    /// Ekranin tablosu ancak <paramref name="dropTables"/> acikken ve Wizard Manager'daki onayla ayni
    /// kosullarda (secilebilir aday) dusurulur; onayi kullanicidan almak istemcinin isidir.
    /// </summary>
    public async Task<WizardDeleteResultDto> DeleteWizardAsync(string fileName, bool dropTables)
    {
        await EnsureToolAllowedAsync(McpToolNames.DeleteWizard);

        var input = new WizardDeleteInput { FileName = fileName };
        if (dropTables)
        {
            var analysis = await wizardAppService.DeleteAnalysis(fileName);
            input.DropTables = [.. analysis.Tables.Where(t => t.CanDrop).Select(t => t.TableName)];
        }

        var result = await wizardAppService.DeleteFile(input);
        await timesheetRecorder.RecordAsync(McpTimesheetTexts.DeleteWizard, fileName);

        return result;
    }

    /// <summary>
    /// Ekrani kullanicinin gorecegi yoldan dener: menu kaydi, menunun istedigi yetki, ekranin
    /// sorgusu (cagiranin yetkisi ve kiraci filtresiyle, tek satir) ve Custom yolunda bilesen.
    /// Hicbir kontrol veri yazmaz; test satiri eklemek SeedSync acik ekranlarda seed dosyasina
    /// iz birakirdi. Seed kapanisi engellemez: ekran bu ortamda calisir, eksik dosya yalnizca
    /// migrate ya da baska bir ortamda ortaya cikar.
    /// </summary>
    public async Task<McpVerifyResultDto> VerifyWizardAsync(string fileName)
    {
        await EnsureToolAllowedAsync(McpToolNames.VerifyWizard);

        var result = new McpVerifyResultDto { FileName = fileName };

        ListFormWizardDto? wizard;
        try
        {
            wizard = (await wizardAppService.GetFile(fileName)).Wizard;
        }
        catch (Exception ex)
        {
            result.Checks.Add(Failed(VerifyChecks.WizardFile, L[McpErrorCodes.VerifyWizardFileInvalid, fileName, ex.Message]));
            return result;
        }

        if (wizard is null)
        {
            result.Checks.Add(Failed(VerifyChecks.WizardFile, L[McpErrorCodes.InvalidWizard]));
            return result;
        }

        var listFormCode = wizard.ComponentKind == WizardComponentKindEnum.Custom ? null : wizard.ResolveListFormCode();
        result.ListFormCode = listFormCode;
        result.MenuUrl = wizard.MenuUrl;
        result.Checks.Add(new McpVerifyCheckDto { Name = VerifyChecks.WizardFile, Passed = true });

        // Deploy yalnizca seed dosyalarini yazar; menu, yetki ve ekran DB Migrate'ten sonra vardir.
        // Kurulmamis bir wizard'in geri kalan kontrolleri anlamsiz hatalar uretirdi.
        var file = (await wizardAppService.GetFiles())
            .FirstOrDefault(f => string.Equals(f.FileName, fileName, StringComparison.OrdinalIgnoreCase));
        if (file?.IsPending == true)
        {
            result.Checks.Add(Failed(VerifyChecks.Install, L[McpErrorCodes.VerifyWizardPending, fileName]));
            return result;
        }

        var permissionName = listFormCode;
        if (wizard.CreateMenu)
        {
            var menu = await VerifyMenuAsync(wizard, result.Checks);
            permissionName = string.IsNullOrWhiteSpace(menu?.RequiredPermissionName) ? permissionName : menu.RequiredPermissionName;
        }

        if (!string.IsNullOrWhiteSpace(permissionName))
        {
            var permission = await permissionRepository.FirstOrDefaultAsync(p => p.Name == permissionName);
            result.Checks.Add(permission is { IsEnabled: true }
                ? new McpVerifyCheckDto { Name = VerifyChecks.Permission, Passed = true, Message = permissionName }
                : Failed(VerifyChecks.Permission, L[McpErrorCodes.VerifyPermissionMissing, permissionName]));
        }

        result.Checks.Add(listFormCode is null
            ? await VerifyComponentAsync(wizard)
            : await VerifySelectAsync(listFormCode));

        result.Checks.Add(await VerifySeedClosureAsync(fileName));

        result.Passed = result.Checks.TrueForAll(check => check.Passed || !check.Blocking);

        return result;
    }

    /// <summary>
    /// Durum kurali modelin dikkatine birakilmaz: talep Ready to Start degilse reddedilir, uygunsa
    /// ayni unit of work'te In Progress'e alinir. MCP yetki vermez; ekranin guncelleme yetkisi
    /// ayrica istenir.
    /// </summary>
    public async Task<McpDevRequestDto> StartDevRequestAsync(string request)
    {
        await EnsureToolAllowedAsync(McpToolNames.StartDevRequest);
        await AuthorizationService.CheckAsync(DevRequestUpdatePermission);

        var devRequest = await FindDevRequestAsync(request);

        if (!string.Equals(devRequest.Status, McpConsts.DevRequestStatuses.ReadyToStart, StringComparison.Ordinal))
        {
            throw new UserFriendlyException(L[McpErrorCodes.DevRequestNotReady, devRequest.Title ?? devRequest.Id.ToString(), devRequest.Status ?? string.Empty]);
        }

        devRequest.Status = McpConsts.DevRequestStatuses.InProgress;
        await devRequestRepository.UpdateAsync(devRequest, autoSave: true);
        await timesheetRecorder.BeginAsync(devRequest.Id);

        return ToDto(devRequest);
    }

    public async Task<McpDevRequestDto> GetDevRequestAsync(string request)
    {
        await EnsureToolAllowedAsync(McpToolNames.GetDevRequest);
        await AuthorizationService.CheckAsync(PlatformConsts.AppCodes.DevRequests);

        var devRequest = await FindDevRequestAsync(request);
        await timesheetRecorder.BeginAsync(devRequest.Id);

        return ToDto(devRequest);
    }

    /// <summary>
    /// Durum kurali modelin dikkatine birakilmaz: yalnizca Backlog ya da Analysis durumundaki talep
    /// analiz edilir. Analysis'teki talebin analizi begenilmediyse yeniden yazilir; Ready to Start'a
    /// kullanici alir.
    /// </summary>
    public async Task<McpDevRequestDto> SaveDevRequestAnalysisAsync(string request, string html)
    {
        await EnsureToolAllowedAsync(McpToolNames.SaveDevRequestAnalysis);
        await AuthorizationService.CheckAsync(DevRequestUpdatePermission);

        if (string.IsNullOrWhiteSpace(html))
        {
            throw new UserFriendlyException(L[McpErrorCodes.DevRequestAnalysisRequired]);
        }

        var devRequest = await FindDevRequestAsync(request);

        if (devRequest.Status is not (McpConsts.DevRequestStatuses.Backlog or McpConsts.DevRequestStatuses.Analysis))
        {
            throw new UserFriendlyException(L[McpErrorCodes.DevRequestNotAnalyzable, devRequest.Title ?? devRequest.Id.ToString(), devRequest.Status ?? string.Empty]);
        }

        devRequest.Analysis = html.Trim();
        devRequest.Status = McpConsts.DevRequestStatuses.Analysis;
        await devRequestRepository.UpdateAsync(devRequest, autoSave: true);
        await timesheetRecorder.RecordAsync(McpTimesheetTexts.Analysis);

        return ToDto(devRequest);
    }

    /// <summary>
    /// Aciklama talebin yazildigi haliyle kalir ve base64 gorsel tasir; uretim notlari analize
    /// eklenir. Ekleme sunucuda, var olan metne dokunmadan yapilir.
    /// </summary>
    public async Task AppendDevRequestNoteAsync(string request, string html)
    {
        await EnsureToolAllowedAsync(McpToolNames.AppendDevRequestNote);
        await AuthorizationService.CheckAsync(DevRequestUpdatePermission);

        if (string.IsNullOrWhiteSpace(html))
        {
            throw new UserFriendlyException(L[McpErrorCodes.DevRequestNoteRequired]);
        }

        var devRequest = await FindDevRequestAsync(request);
        devRequest.Analysis = string.Concat(devRequest.Analysis, html.Trim());
        await devRequestRepository.UpdateAsync(devRequest, autoSave: true);
        await timesheetRecorder.RecordAsync(McpTimesheetTexts.AppendNote);
    }

    /// <summary>
    /// Atanan kisi ve tarih modelin dikkatine birakilmaz: satiri yazan cagiran kullanicidir
    /// (ekranin atanan listesi kullanici adiyla calisir), bitis tarihi yazildigi gundur.
    /// Var olan satirlara dokunulmaz.
    /// </summary>
    public async Task AddDevRequestSubTasksAsync(string request, List<string> titles)
    {
        await EnsureToolAllowedAsync(McpToolNames.AddDevRequestSubTasks);
        await AuthorizationService.CheckAsync(DevRequestUpdatePermission);

        var items = (titles ?? []).Select(title => title?.Trim()).Where(title => !string.IsNullOrEmpty(title)).ToList();
        if (items.Count == 0)
        {
            throw new UserFriendlyException(L[McpErrorCodes.DevRequestSubTasksRequired]);
        }

        var devRequest = await FindDevRequestAsync(request);

        JsonArray subTasks;
        try
        {
            subTasks = string.IsNullOrWhiteSpace(devRequest.SubTasks)
                ? []
                : JsonNode.Parse(devRequest.SubTasks) as JsonArray ?? throw new JsonException();
        }
        catch (JsonException)
        {
            throw new UserFriendlyException(L[McpErrorCodes.DevRequestSubTasksInvalid, devRequest.Title ?? devRequest.Id.ToString()]);
        }

        var assignee = CurrentUser.UserName ?? string.Empty;
        var dueDate = Clock.Now.ToString(SubTaskDateFormat, CultureInfo.InvariantCulture);

        foreach (var title in items)
        {
            subTasks.Add(new JsonObject
            {
                ["id"] = GuidGenerator.Create().ToString(),
                ["title"] = title,
                ["assignee"] = assignee,
                ["dueDate"] = dueDate,
                ["completed"] = true
            });
        }

        devRequest.SubTasks = subTasks.ToJsonString();
        await devRequestRepository.UpdateAsync(devRequest, autoSave: true);
        await timesheetRecorder.RecordAsync(McpTimesheetTexts.AddSubTasks, items.Count);
    }

    public async Task<ModuleDocDto> GetModuleDocAsync(string name)
    {
        await EnsureToolAllowedAsync(McpToolNames.GetModuleDoc);
        return await moduleDocAppService.GetByNameAsync(name);
    }

    public async Task<ModuleDocDto> SaveModuleDocAsync(string name, string content)
    {
        await EnsureToolAllowedAsync(McpToolNames.SaveModuleDoc);

        var doc = await moduleDocAppService.SaveAsync(new ModuleDocSaveInput { Name = name, Content = content });
        await timesheetRecorder.RecordAsync(McpTimesheetTexts.SaveModuleDoc, doc.Name);

        return doc;
    }

    private static McpDevRequestDto ToDto(DevRequest devRequest)
    {
        var (description, images) = McpDevRequestImages.Extract(devRequest.Description);

        return new McpDevRequestDto
        {
            Id = devRequest.Id,
            Title = devRequest.Title,
            Status = devRequest.Status ?? string.Empty,
            Description = description,
            Images = images,
            Analysis = devRequest.Analysis,
            Priority = devRequest.Priority,
            Tags = devRequest.Tags,
            DueDate = devRequest.DueDate,
            UserName = devRequest.UserName,
            TenantId = devRequest.TenantId,
            SubTasks = devRequest.SubTasks
        };
    }

    /// <summary>Id ile ya da tam baslikla bulur; ayni basligi tasiyan birden fazla talep varsa Id istenir.</summary>
    private async Task<DevRequest> FindDevRequestAsync(string? request)
    {
        var value = request?.Trim() ?? string.Empty;

        if (Guid.TryParse(value, out var id))
        {
            return await devRequestRepository.FindAsync(id)
                   ?? throw new UserFriendlyException(L[McpErrorCodes.DevRequestNotFound, value]);
        }

        var matches = value.Length == 0 ? [] : await devRequestRepository.GetListAsync(r => r.Title == value);

        return matches.Count switch
        {
            0 => throw new UserFriendlyException(L[McpErrorCodes.DevRequestNotFound, value]),
            1 => matches[0],
            _ => throw new UserFriendlyException(L[McpErrorCodes.DevRequestAmbiguous, value, string.Join(", ", matches.Select(r => r.Id))])
        };
    }

    /// <summary>
    /// Kapanis analizi wizard export'unun yetkisini ister; o yetki dogrulamanin kendisini
    /// dusurmesin diye yoksa kontrol atlanir ve nedeni raporlanir.
    /// </summary>
    private async Task<McpVerifyCheckDto> VerifySeedClosureAsync(string fileName)
    {
        var check = new McpVerifyCheckDto { Name = VerifyChecks.SeedClosure, Blocking = false };

        if (!await AuthorizationService.IsGrantedAsync(PlatformConsts.AppCodes.Listforms.Wizards.Export))
        {
            check.Message = L[McpErrorCodes.VerifySeedClosureSkipped, PlatformConsts.AppCodes.Listforms.Wizards.Export];
            return check;
        }

        var warnings = (await wizardAppService.ExportAnalysis(fileName)).Warnings;
        if (warnings.Count == 0)
        {
            check.Passed = true;
            return check;
        }

        check.Message = L[McpErrorCodes.VerifySeedClosureIncomplete, string.Join(", ", warnings)];
        return check;
    }

    private async Task<Menu?> VerifyMenuAsync(ListFormWizardDto wizard, List<McpVerifyCheckDto> checks)
    {
        var menuCode = wizard.ResolveMenuCode();
        var menu = await menuRepository.FirstOrDefaultAsync(m => m.Code == menuCode);

        if (menu is null)
        {
            checks.Add(Failed(VerifyChecks.Menu, L[McpErrorCodes.VerifyMenuMissing, menuCode]));
        }
        else if (menu.IsDisabled)
        {
            checks.Add(Failed(VerifyChecks.Menu, L[McpErrorCodes.VerifyMenuDisabled, menuCode]));
        }
        else if (!string.Equals(menu.Url, wizard.MenuUrl, StringComparison.OrdinalIgnoreCase))
        {
            checks.Add(Failed(VerifyChecks.Menu, L[McpErrorCodes.VerifyMenuUrlMismatch, menuCode, menu.Url, wizard.MenuUrl]));
        }
        else
        {
            checks.Add(new McpVerifyCheckDto { Name = VerifyChecks.Menu, Passed = true, Message = menu.Url });
        }

        return menu;
    }

    /// <summary>
    /// Ekranin sorgusunu query_list ile ayni servisten calistirir; kolon, veri kaynagi ve yetki
    /// hatalari burada ortaya cikar.
    /// </summary>
    private async Task<McpVerifyCheckDto> VerifySelectAsync(string listFormCode)
    {
        try
        {
            var select = await listFormSelectAppService.GetSelectAsync(new SelectRequestDto
            {
                ListFormCode = listFormCode,
                Take = 1,
                RequireTotalCount = true
            });

            return new McpVerifyCheckDto
            {
                Name = VerifyChecks.Select,
                Passed = true,
                Message = L[McpErrorCodes.VerifySelectPassed, select.TotalCount]
            };
        }
        catch (Exception ex)
        {
            return Failed(VerifyChecks.Select, L[McpErrorCodes.VerifySelectFailed, ex.Message]);
        }
    }

    private async Task<McpVerifyCheckDto> VerifyComponentAsync(ListFormWizardDto wizard)
    {
        var component = await FindComponentAsync(wizard.CustomComponentName);

        if (component is null)
        {
            return Failed(VerifyChecks.Component, L[McpErrorCodes.ComponentNotFound, wizard.CustomComponentName]);
        }

        if (!component.IsActive)
        {
            return Failed(VerifyChecks.Component, L[McpErrorCodes.VerifyComponentInactive, component.Name]);
        }

        if (wizard.CreateMenu && !string.Equals(component.RoutePath, wizard.MenuUrl, StringComparison.OrdinalIgnoreCase))
        {
            return Failed(VerifyChecks.Component, L[McpErrorCodes.VerifyComponentRouteMismatch, component.Name, component.RoutePath ?? string.Empty, wizard.MenuUrl]);
        }

        return new McpVerifyCheckDto { Name = VerifyChecks.Component, Passed = true, Message = component.RoutePath };
    }

    private static McpVerifyCheckDto Failed(string name, string message)
        => new() { Name = name, Passed = false, Message = message };

    public async Task<List<McpComponentSummaryDto>> GetComponentsAsync(string? search)
    {
        await EnsureToolAllowedAsync(McpToolNames.ListComponents);

        var components = await GetAllComponentsAsync();

        return [.. components
            .Where(component => string.IsNullOrWhiteSpace(search)
                             || Contains(component.Name, search)
                             || Contains(component.RoutePath, search)
                             || Contains(component.Description, search))
            .Select(component => new McpComponentSummaryDto
            {
                Id = component.Id,
                Name = component.Name,
                RoutePath = component.RoutePath,
                Description = component.Description,
                IsActive = component.IsActive,
                IsVisualDesigner = IsVisualDesignerDocument(component.Props)
            })];
    }

    public async Task<CustomComponentDto?> GetComponentAsync(string name)
    {
        await EnsureToolAllowedAsync(McpToolNames.GetComponent);

        return await FindComponentAsync(name);
    }

    public async Task<CustomComponentDto> SaveComponentAsync(McpComponentSaveRequestDto input)
    {
        Check.NotNull(input, nameof(input));
        await EnsureToolAllowedAsync(McpToolNames.SaveComponent);

        if (string.IsNullOrWhiteSpace(input.Name))
        {
            throw new UserFriendlyException(L[McpErrorCodes.ComponentNameRequired]);
        }

        var existing = await FindComponentAsync(input.Name);
        var props = input.Props ?? existing?.Props;

        // Tasarimci belgesinde kod belgeden uretilir; buraya yazilan kod tasarimcidaki ilk
        // kayitta sessizce ezilirdi. Belge MCP'de uretilemedigi icin bu bilesenler tasarimcida kalir.
        if (IsVisualDesignerDocument(props))
        {
            throw new UserFriendlyException(L[McpErrorCodes.VisualDesignerComponent, input.Name]);
        }

        if (existing is null)
        {
            if (string.IsNullOrWhiteSpace(input.Code))
            {
                throw new UserFriendlyException(L[McpErrorCodes.ComponentCodeRequired]);
            }

            var created = await componentAppService.CreateAsync(new CreateUpdateCustomComponentDto
            {
                Name = input.Name.Trim(),
                Code = input.Code,
                RoutePath = input.RoutePath,
                Description = input.Description,
                Props = props,
                Dependencies = input.Dependencies,
                IsActive = input.IsActive ?? true
            });
            await timesheetRecorder.RecordAsync(McpTimesheetTexts.SaveComponent, created.Name);

            return created;
        }

        var updated = await componentAppService.UpdateAsync(existing.Id, new CreateUpdateCustomComponentDto
        {
            Name = existing.Name,
            Code = string.IsNullOrWhiteSpace(input.Code) ? existing.Code : input.Code,
            RoutePath = input.RoutePath ?? existing.RoutePath,
            Description = input.Description ?? existing.Description,
            Props = props,
            Dependencies = input.Dependencies ?? existing.Dependencies,
            IsActive = input.IsActive ?? existing.IsActive
        });
        await timesheetRecorder.RecordAsync(McpTimesheetTexts.SaveComponent, updated.Name);

        return updated;
    }

    public async Task DeleteComponentAsync(string name)
    {
        await EnsureToolAllowedAsync(McpToolNames.DeleteComponent);

        var component = await FindComponentAsync(name)
                        ?? throw new UserFriendlyException(L[McpErrorCodes.ComponentNotFound, name]);

        await componentAppService.DeleteAsync(component.Id);
        await timesheetRecorder.RecordAsync(McpTimesheetTexts.DeleteComponent, component.Name);
    }

    /// <summary>
    /// Wizard'i seed dosyasi biciminden (<c>{"Wizard": {...}, "ListForm": {...}, "Fields": [...]}</c>)
    /// ya da duz cevaplardan okur; Menu/Language bloklari ve WizardCode/ModuleId adlari dosyadakiyle
    /// ayni anlama gelir. ListForm/Fields bolumleri ekrana katman olarak uygulanir
    /// (<see cref="WizardSeedFileDto.FromDeployJson"/>).
    /// </summary>
    private ListFormWizardDto ParseWizard(string? json)
    {
        try
        {
            return (string.IsNullOrWhiteSpace(json) ? null : WizardSeedFileDto.FromDeployJson(json))
                   ?? throw new UserFriendlyException(L[McpErrorCodes.InvalidWizard]);
        }
        catch (JsonException ex)
        {
            // Genel mesajla model hangi degerin bozuk oldugunu bilemez ve ayni JSON'u tekrar gonderir.
            throw new UserFriendlyException(L[McpErrorCodes.InvalidWizardValue, ex.Path ?? "$", ex.Message]);
        }
    }

    private async Task<IReadOnlyList<CustomComponentDto>> GetAllComponentsAsync()
    {
        var page = await componentAppService.GetListAsync(new PagedAndSortedResultRequestDto
        {
            MaxResultCount = ComponentPageSize,
            Sorting = nameof(CustomComponentDto.Name)
        });

        return page.Items;
    }

    private async Task<CustomComponentDto?> FindComponentAsync(string? name)
    {
        if (string.IsNullOrWhiteSpace(name))
        {
            return null;
        }

        var components = await GetAllComponentsAsync();

        return components.FirstOrDefault(component => string.Equals(component.Name, name.Trim(), StringComparison.OrdinalIgnoreCase));
    }

    /// <summary>
    /// Props icinde tasarimci belgesi varsa ve kip acikca <c>code</c> degilse kod belgeden
    /// uretilir; tasarimcinin varsayilan kipi <c>visual</c>'dir.
    /// </summary>
    private static bool IsVisualDesignerDocument(string? props)
    {
        if (string.IsNullOrWhiteSpace(props))
        {
            return false;
        }

        try
        {
            using var document = JsonDocument.Parse(props);
            if (document.RootElement.ValueKind != JsonValueKind.Object ||
                !document.RootElement.TryGetProperty("visualDesigner", out var designer) ||
                designer.ValueKind != JsonValueKind.Object)
            {
                return false;
            }

            return !designer.TryGetProperty("sourceMode", out var mode) ||
                   mode.ValueKind != JsonValueKind.String ||
                   !string.Equals(mode.GetString(), "code", StringComparison.Ordinal);
        }
        catch (JsonException)
        {
            return false;
        }
    }

    private static bool Contains(string? value, string search)
        => value?.Contains(search.Trim(), StringComparison.OrdinalIgnoreCase) == true;

    private static McpDevGuideHeadingDto ToDto(McpDevGuideHeading heading) => new()
    {
        Document = heading.Document,
        Id = heading.Id,
        Title = heading.Title,
        Level = heading.Level
    };
}