using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Text.Json;
using System.Threading.Tasks;
using Microsoft.Extensions.Logging;
using Sozsoft.Languages.Entities;
using Sozsoft.Languages.Languages;
using Sozsoft.Platform.Entities;
using Sozsoft.Platform.Enums;
using Sozsoft.Platform.ListForms;
using Volo.Abp.Data;
using Volo.Abp.DependencyInjection;
using Volo.Abp.Domain.Repositories;
using Volo.Abp.MultiTenancy;
using Volo.Abp.PermissionManagement;
using static Sozsoft.Platform.PlatformConsts;

namespace Sozsoft.Platform.Data.Seeds;

/// <summary>
/// Wizard ile oluşturulan konfigürasyonları Seeds/WizardData/*.json dosyalarından okuyarak veritabanına aktarır.
/// Wizard çalıştıktan sonra oluşturulan JSON dosyaları projeye commit edildikten sonra,
/// veritabanı silinip yeniden oluşturulduğunda bu seeder tüm wizard konfigürasyonlarını geri yükler.
/// </summary>
public class WizardDataSeeder : IDataSeedContributor, ITransientDependency
{
    private readonly IRepository<LanguageKey, Guid> _repoLangKey;
    private readonly IRepository<LanguageText, Guid> _repoLangText;
    private readonly IRepository<PermissionGroupDefinitionRecord, Guid> _repoPermGroup;
    private readonly IRepository<PermissionDefinitionRecord, Guid> _repoPerm;
    private readonly IPermissionGrantRepository _permissionGrantRepository;
    private readonly IRepository<Menu, Guid> _repoMenu;
    private readonly IRepository<DataSource, Guid> _repoDataSource;
    private readonly IRepository<ListForm, Guid> _repoListForm;
    private readonly IRepository<ListFormField, Guid> _repoListFormField;
    private readonly ILogger<WizardDataSeeder> _logger;

    private readonly string _cultureNameDefault = PlatformConsts.DefaultLanguage;
    private readonly string _appName = PlatformConsts.AppName;

    public WizardDataSeeder(
        IRepository<LanguageKey, Guid> repoLangKey,
        IRepository<LanguageText, Guid> repoLangText,
        IRepository<PermissionGroupDefinitionRecord, Guid> repoPermGroup,
        IRepository<PermissionDefinitionRecord, Guid> repoPerm,
        IPermissionGrantRepository permissionGrantRepository,
        IRepository<Menu, Guid> repoMenu,
        IRepository<DataSource, Guid> repoDataSource,
        IRepository<ListForm, Guid> repoListForm,
        IRepository<ListFormField, Guid> repoListFormField,
        ILogger<WizardDataSeeder> logger)
    {
        _repoLangKey = repoLangKey;
        _repoLangText = repoLangText;
        _repoPermGroup = repoPermGroup;
        _repoPerm = repoPerm;
        _permissionGrantRepository = permissionGrantRepository;
        _repoMenu = repoMenu;
        _repoDataSource = repoDataSource;
        _repoListForm = repoListForm;
        _repoListFormField = repoListFormField;
        _logger = logger;
    }

    public async Task SeedAsync(DataSeedContext context)
    {
        var wizardDataPath = Path.Combine(Directory.GetCurrentDirectory(), "Seeds", "WizardData");
        if (!Directory.Exists(wizardDataPath))
        {
            _logger.LogInformation("WizardData directory not found, skipping.");
            return;
        }

        var jsonFiles = Directory.GetFiles(wizardDataPath, "*.json").OrderBy(f => Path.GetFileName(f)).ToArray();
        if (jsonFiles.Length == 0)
        {
            _logger.LogInformation("No JSON files found in WizardData directory, skipping.");
            return;
        }

        _logger.LogInformation("WizardDataSeeder started. {Count} files to be processed.", jsonFiles.Length);

        var options = new JsonSerializerOptions { PropertyNameCaseInsensitive = true };

        foreach (var filePath in jsonFiles)
        {
            try
            {
                var json = await File.ReadAllTextAsync(filePath);
                var seedFile = JsonSerializer.Deserialize<WizardSeedFileDto>(json, options);

                if (seedFile?.Wizard == null)
                {
                    _logger.LogWarning("Invalid file skipped: {FilePath}", filePath);
                    continue;
                }

                var wizardName = seedFile.Wizard.WizardName?.Trim();
                if (string.IsNullOrWhiteSpace(wizardName))
                {
                    _logger.LogWarning("WizardName is empty, skipped: {FilePath}", filePath);
                    continue;
                }

                var fileName = Path.GetFileName(filePath);

                // Zaten seeded mi kontrol et (ListForm var mı?)
                if (await _repoListForm.AnyAsync(a => a.ListFormCode == seedFile.Wizard.ListFormCode))
                {
                    _logger.LogInformation("[{File}] '{WizardName}' already exists, skipped.", fileName, wizardName);
                    continue;
                }

                _logger.LogInformation("[{File}] '{WizardName}' is being applied...", fileName, wizardName);
                await ApplyWizardSeedAsync(seedFile);
                _logger.LogInformation("[{File}] '{WizardName}' has been successfully applied.", fileName, wizardName);
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, $"Error - {filePath}: {ex.Message}");
            }
        }
    }

    private async Task ApplyWizardSeedAsync(WizardSeedFileDto seedFile)
    {
        var input = seedFile.Wizard;
        var isDeleted = seedFile.IsDeletedField;
        var isCreated = seedFile.IsCreatedField;
        input.SubForms ??= new List<SubFormDto>();
        input.Widgets ??= new List<WidgetEditDto>();
        input.Workflow ??= new WorkflowDto();
        input.WorkflowCriteria ??= new List<ListFormWorkflowCriteriaDto>();
        input.Workflow.Criteria = input.WorkflowCriteria;

        var wizardName = input.WizardName.Trim();
        var code = string.IsNullOrWhiteSpace(input.MenuCode)
            ? WizardConsts.WizardKey(wizardName)
            : input.MenuCode.Trim();
        var listFormCode = string.IsNullOrWhiteSpace(input.ListFormCode)
            ? code
            : input.ListFormCode.Trim();
        var titleLangKey = $"{listFormCode}.Title";
        var nameLangKey = code;
        var descLangKey = $"{listFormCode}.Desc";
        var permCreateName = $"{code}.Create";
        var permUpdateName = $"{code}.Update";
        var permDeleteName = $"{code}.Delete";
        var permExportName = $"{code}.Export";
        var permImportName = $"{code}.Import";
        var permNoteName = $"{code}.Note";

        // Dil - Language Keys
        await CreateLangKeyAsync(nameLangKey, input.LanguageTextMenuEn, input.LanguageTextMenuTr);
        await CreateLangKeyAsync(titleLangKey, input.LanguageTextTitleEn, input.LanguageTextTitleTr);
        await CreateLangKeyAsync(descLangKey, input.LanguageTextDescEn, input.LanguageTextDescTr);

        // Permission Group
        var groupName = input.PermissionGroupName ?? AppName;
        if (!await _repoPermGroup.AnyAsync(a => a.Name == groupName))
        {
            await _repoPermGroup.InsertAsync(
                new PermissionGroupDefinitionRecord(Guid.NewGuid(), groupName, groupName), autoSave: true);
            if (string.Equals(groupName, input.MenuParentCode, StringComparison.OrdinalIgnoreCase))
                await EnsureLangKeyAsync(groupName);
            else
                await CreateLangKeyAsync(groupName, groupName, groupName);
        }

        // Permissions - tek seferde mevcut permission'ları çek, sonra her birini kontrol et
        var permQueryable = await _repoPerm.GetQueryableAsync();
        var existingPerms = permQueryable.Where(a => a.GroupName == groupName).ToList();

        var permRead = existingPerms.FirstOrDefault(a => a.Name == code);
        if (permRead == null)
            permRead = await _repoPerm.InsertAsync(new PermissionDefinitionRecord(
                Guid.NewGuid(), groupName, code, null, nameLangKey, true, MultiTenancySides.Both), autoSave: true);

        var permCreate = existingPerms.FirstOrDefault(a => a.Name == permCreateName);
        if (permCreate == null)
            permCreate = await _repoPerm.InsertAsync(new PermissionDefinitionRecord(
                Guid.NewGuid(), groupName, permCreateName, permRead.Name, WizardConsts.LangKeyCreate, true, MultiTenancySides.Both), autoSave: true);

        var permUpdate = existingPerms.FirstOrDefault(a => a.Name == permUpdateName);
        if (permUpdate == null)
            permUpdate = await _repoPerm.InsertAsync(new PermissionDefinitionRecord(
                Guid.NewGuid(), groupName, permUpdateName, permRead.Name, WizardConsts.LangKeyUpdate, true, MultiTenancySides.Both), autoSave: true);

        var permDelete = existingPerms.FirstOrDefault(a => a.Name == permDeleteName);
        if (permDelete == null)
            permDelete = await _repoPerm.InsertAsync(new PermissionDefinitionRecord(
                Guid.NewGuid(), groupName, permDeleteName, permRead.Name, WizardConsts.LangKeyDelete, true, MultiTenancySides.Both), autoSave: true);

        var permExport = existingPerms.FirstOrDefault(a => a.Name == permExportName);
        if (permExport == null)
            permExport = await _repoPerm.InsertAsync(new PermissionDefinitionRecord(
                Guid.NewGuid(), groupName, permExportName, permRead.Name, WizardConsts.LangKeyExport, true, MultiTenancySides.Both), autoSave: true);

        var permImport = existingPerms.FirstOrDefault(a => a.Name == permImportName);
        if (permImport == null)
            permImport = await _repoPerm.InsertAsync(new PermissionDefinitionRecord(
                Guid.NewGuid(), groupName, permImportName, permRead.Name, WizardConsts.LangKeyImport, true, MultiTenancySides.Both), autoSave: true);

        var permNote = existingPerms.FirstOrDefault(a => a.Name == permNoteName);
        if (permNote == null)
            permNote = await _repoPerm.InsertAsync(new PermissionDefinitionRecord(
                Guid.NewGuid(), groupName, permNoteName, permRead.Name, WizardConsts.LangKeyNote, true, MultiTenancySides.Both), autoSave: true);

        // // Permission Grants - Admin role için, sadece eksik olanları ekle
        // var existingGrants = await _permissionGrantRepository.GetListAsync("R", PlatformConsts.AbpIdentity.User.AdminRoleName);
        // var existingGrantNames = new HashSet<string>(existingGrants.Select(g => g.Name));

        // var grantsToInsert = new[]
        // {
        //     permRead.Name, permCreate.Name, permUpdate.Name,
        //     permDelete.Name, permExport.Name, permImport.Name, permNote.Name
        // }
        // .Where(name => !existingGrantNames.Contains(name))
        // .Select(name => new PermissionGrant(Guid.NewGuid(), name, "R", PlatformConsts.AbpIdentity.User.AdminRoleName))
        // .ToList();

        // if (grantsToInsert.Count > 0)
        // {
        //     await _permissionGrantRepository.InsertManyAsync(grantsToInsert, autoSave: true);
        // }

        // Menu Parent
        var menuQueryable = await _repoMenu.GetQueryableAsync();
        var menuParent = await _repoMenu.FirstOrDefaultAsync(a => a.Code == input.MenuParentCode);
        if (menuParent == null)
        {
            var maxRootOrder = menuQueryable.Where(a => a.ParentCode == null || a.ParentCode == "").Select(a => (int?)a.Order).Max() ?? 0;
            var menuParentIcon = !string.IsNullOrWhiteSpace(input.MenuParentIcon)
                ? input.MenuParentIcon
                : !string.IsNullOrWhiteSpace(input.MenuIcon)
                    ? input.MenuIcon
                    : WizardConsts.MenuIcon;
            await CreateLangKeyAsync(input.MenuParentCode, input.LanguageTextMenuParentEn, input.LanguageTextMenuParentTr);
            menuParent = await _repoMenu.InsertAsync(new Menu
            {
                Code = input.MenuParentCode,
                DisplayName = input.MenuParentCode,
                IsDisabled = false,
                Icon = menuParentIcon,
                Order = maxRootOrder + 1,
            }, autoSave: true);
        }

        // Menu
        var maxChildOrder = menuQueryable.Where(a => a.ParentCode == menuParent.Code).Select(a => (int?)a.Order).Max() ?? 0;
        var existingMenu = await _repoMenu.FirstOrDefaultAsync(a => a.Code == code);
        if (existingMenu == null)
        {
            await _repoMenu.InsertAsync(new Menu
            {
                Code = code,
                DisplayName = nameLangKey,
                IsDisabled = false,
                ParentCode = menuParent.Code,
                Icon = input.MenuIcon ?? WizardConsts.MenuIcon,
                Target = null,
                ElementId = null,
                CssClass = null,
                Url = WizardConsts.MenuUrl(code),
                RequiredPermissionName = permRead.Name,
                Order = maxChildOrder + 1,
            }, autoSave: true);
        }

        // DataSource
        var existingDataSource = await _repoDataSource.FirstOrDefaultAsync(a => a.Code == input.DataSourceCode);
        if (existingDataSource == null)
        {
            await _repoDataSource.InsertAsync(new DataSource
            {
                Code = input.DataSourceCode,
                DataSourceType = input.DataSourceConnectionString != null &&
                                 input.DataSourceConnectionString.IndexOf("Server", StringComparison.OrdinalIgnoreCase) >= 0
                    ? DataSourceTypeEnum.Mssql
                    : DataSourceTypeEnum.Postgresql,
                ConnectionString = input.DataSourceConnectionString
            }, autoSave: true);
        }


        // EditingFormJson
        var editingFormDtos = input.Groups
            .Select((g, gi) => new EditingFormDto
            {
                Order = gi + 1,
                Caption = g.Caption,
                ColCount = g.ColCount,
                ColSpan = g.ColCount,
                ItemType = "group",
                Items = g.Items
                    .Where(i => i.DataField != input.KeyFieldName)
                    .Select((it, ii) => new EditingFormItemDto
                    {
                        Order = ii + 1,
                        DataField = it.DataField,
                        EditorType2 = it.EditorType,
                        ColSpan = it.ColSpan,
                        EditorOptions = string.IsNullOrWhiteSpace(it.EditorOptions) ? null : it.EditorOptions,
                        EditorScript = string.IsNullOrWhiteSpace(it.EditorScript) ? null : it.EditorScript,
                        IsRequired = it.IsRequired,
                    })
                    .ToArray()
            })
            .ToList();

        // ListForm - varsa sil, yeniden ekle
        var existingListForm = await _repoListForm.FirstOrDefaultAsync(a => a.ListFormCode == input.ListFormCode);
        if (existingListForm != null)
        {
            await _repoListForm.DeleteAsync(existingListForm, autoSave: true);
        }

        var existingListFormFields = await _repoListFormField.GetListAsync(a => a.ListFormCode == input.ListFormCode);
        if (existingListFormFields.Count > 0)
        {
            await _repoListFormField.DeleteManyAsync(existingListFormFields, autoSave: true);
        }

        // ListForm
        await _repoListForm.InsertAsync(new ListForm
        {
            ListFormType = ListFormTypeEnum.List,
            PageSize = 10,
            ExportJson = WizardConsts.DefaultExportJson,
            IsSubForm = false,
            ShowNote = input.SubForms.Count > 0,
            LayoutJson = WizardConsts.DefaultLayoutJson(input.DefaultLayout, input.Grid, input.Pivot, input.Tree, input.Chart, input.Gantt, input.Scheduler),
            CultureName = LanguageCodes.En,
            ListFormCode = input.ListFormCode,
            Name = nameLangKey,
            Title = titleLangKey,
            Description = descLangKey,
            DataSourceCode = input.DataSourceCode,
            IsTenant = input.IsTenant,
            IsBranch = input.IsBranch,
            IsOrganizationUnit = input.IsOrganizationUnit,
            SelectCommandType = input.SelectCommandType,
            SelectCommand = input.SelectCommand,
            KeyFieldName = input.KeyFieldName,
            KeyFieldDbSourceType = input.KeyFieldDbSourceType,
            DefaultFilter = isDeleted ? WizardConsts.DefaultFilterJson : null,
            SortMode = GridOptions.SortModeSingle,
            FilterRowJson = WizardConsts.DefaultFilterRowJson,
            HeaderFilterJson = WizardConsts.DefaultHeaderFilterJson,
            SearchPanelJson = WizardConsts.DefaultSearchPanelJson,
            GroupPanelJson = JsonSerializer.Serialize(new { Visible = false }),
            SelectionJson = WizardConsts.DefaultSelectionSingleJson,
            ColumnOptionJson = WizardConsts.DefaultColumnOptionJson(),
            PermissionJson = WizardConsts.DefaultPermissionJson(code),
            DeleteCommand = isDeleted ? WizardConsts.DefaultDeleteCommand(input.SelectCommand) : null,
            DeleteFieldsDefaultValueJson = isDeleted
                ? WizardConsts.DefaultDeleteFieldsDefaultValueJson(input.KeyFieldDbSourceType)
                : WizardConsts.DefaultFieldsJsonOnlyId(input.KeyFieldDbSourceType),
            InsertFieldsDefaultValueJson = isCreated
                ? WizardConsts.DefaultInsertFieldsDefaultValueJson(input.KeyFieldDbSourceType)
                : WizardConsts.DefaultFieldsJsonOnlyId(input.KeyFieldDbSourceType),
            PagerOptionJson = WizardConsts.DefaultPagerOptionJson,
            EditingOptionJson = WizardConsts.DefaultEditingOptionJson(titleLangKey, 600, 500, input.AllowDeleting, input.AllowAdding, input.AllowUpdating, input.ConfirmDelete, false, input.AllowDetail),
            EditingFormJson = editingFormDtos.Count > 0 ? JsonSerializer.Serialize(editingFormDtos) : null,
            SubFormsJson = input.SubForms.Count > 0 ? JsonSerializer.Serialize(input.SubForms) : null,
            WidgetsJson = input.Widgets.Count > 0 ? JsonSerializer.Serialize(input.Widgets) : null,
            WorkflowJson = HasWorkflow(input.Workflow, input.WorkflowCriteria) ? JsonSerializer.Serialize(input.Workflow) : null,
        }, autoSave: true);

        // ListFormFields
        var fieldOrder = 0;
        foreach (var group in input.Groups)
        {
            foreach (var item in group.Items)
            {
                fieldOrder++;
                await _repoListFormField.InsertAsync(new ListFormField
                {
                    ListFormCode = input.ListFormCode,
                    FieldName = item.DataField,
                    CaptionName = item.CaptionName,
                    Visible = item.DataField != input.KeyFieldName,
                    IsActive = true,
                    Width = 0, //Fit columns için hepsine sıfır veriyorum.
                    AllowSearch = true,
                    ListOrderNo = fieldOrder,
                    SourceDbType = item.DbSourceType,
                    CultureName = PlatformConsts.DefaultLanguage,
                    PermissionJson = WizardConsts.DefaultFieldPermissionJson(code),
                    ColumnCustomizationJson = WizardConsts.DefaultColumnCustomizationJson,
                    ColumnFilterJson = WizardConsts.DefaultColumnFilteringJson,
                    PivotSettingsJson = WizardConsts.DefaultPivotSettingsJson,
                    LookupJson = !string.IsNullOrWhiteSpace(item.LookupQuery)
                        ? WizardConsts.DefaultLookupJson(item.LookupDataSourceType, item.DisplayExpr, item.ValueExpr, item.LookupQuery)
                        : null,
                }, autoSave: true);

                await CreateLangKeyAsync(item.CaptionName, item.EnglishCaption, item.TurkishCaption);
            }
        }
    }

    private static bool HasWorkflow(WorkflowDto workflow, List<ListFormWorkflowCriteriaDto> criteria)
    {
        return workflow != null && (
            !string.IsNullOrWhiteSpace(workflow.ApprovalUserFieldName) ||
            !string.IsNullOrWhiteSpace(workflow.ApprovalDateFieldName) ||
            !string.IsNullOrWhiteSpace(workflow.ApprovalStatusFieldName) ||
            !string.IsNullOrWhiteSpace(workflow.ApprovalDescriptionFieldName) ||
            (criteria?.Count ?? 0) > 0
        );
    }

    private async Task CreateLangKeyAsync(string key, string textEn, string textTr)
    {
        if (string.IsNullOrWhiteSpace(key)) return;

        var langKey = await _repoLangKey.FirstOrDefaultAsync(a => a.ResourceName == _appName && a.Key == key)
            ?? await _repoLangKey.InsertAsync(new LanguageKey { ResourceName = _appName, Key = key }, autoSave: true);

        var existingTexts = await _repoLangText.GetListAsync(a => a.ResourceName == _appName && a.Key == langKey.Key);

        var existingEn = existingTexts.FirstOrDefault(a => a.CultureName == _cultureNameDefault);
        if (existingEn == null)
        {
            await _repoLangText.InsertAsync(new LanguageText
            {
                ResourceName = _appName,
                Key = langKey.Key,
                CultureName = _cultureNameDefault,
                Value = textEn ?? key
            }, autoSave: true);
        }

        var existingTr = existingTexts.FirstOrDefault(a => a.CultureName == LanguageCodes.Tr);
        if (existingTr == null)
        {
            await _repoLangText.InsertAsync(new LanguageText
            {
                ResourceName = _appName,
                Key = langKey.Key,
                CultureName = LanguageCodes.Tr,
                Value = textTr ?? key
            }, autoSave: true);
        }
    }

    private async Task EnsureLangKeyAsync(string key)
    {
        if (string.IsNullOrWhiteSpace(key)) return;

        if (!await _repoLangKey.AnyAsync(a => a.ResourceName == _appName && a.Key == key))
        {
            await _repoLangKey.InsertAsync(new LanguageKey { ResourceName = _appName, Key = key }, autoSave: true);
        }
    }
}