using System;
using System.Linq;
using System.Threading.Tasks;
using Sozsoft.Platform;
using Volo.Abp.Data;
using Volo.Abp.DependencyInjection;
using Volo.Abp.Domain.Repositories;
using Volo.Abp.Guids;
using Volo.Abp.PermissionManagement;

namespace Sozsoft.Mcp.Data;

/// <summary>
/// Kaldirilan <c>McpServers.Develop</c> yetkisini <c>McpServers.Write</c>'a tasir: Develop verilmis
/// rol/kullanicilara Write verilir, sonra Develop'un atamalari ve tanimi silinir. Seed yalnizca
/// ekledigi icin tanim bu adim olmadan yetki ekraninda sahipsiz kalir, o kullanicilar da
/// gelistirme araclarini kaybederdi. Develop kalmadiginda hicbir sey yapmaz; tekrar calismasi guvenlidir.
/// </summary>
public class McpDevelopPermissionMergeDataSeedContributor(
    IRepository<PermissionGrant, Guid> grantRepository,
    IRepository<PermissionDefinitionRecord, Guid> definitionRepository,
    IGuidGenerator guidGenerator) : IDataSeedContributor, ITransientDependency
{
    private const string LegacyDevelopPermission = PlatformConsts.AppCodes.DeveloperKits.McpServers.McpServer + ".Develop";
    private const string WritePermission = PlatformConsts.AppCodes.DeveloperKits.McpServers.Write;

    public async Task SeedAsync(DataSeedContext context)
    {
        // Develop yalnizca host tarafinda tanimliydi; kiraci turlarinda atamasi olamaz.
        if (context.TenantId is not null)
        {
            return;
        }

        var developGrants = await grantRepository.GetListAsync(g => g.Name == LegacyDevelopPermission);
        if (developGrants.Count > 0)
        {
            var writeGrants = await grantRepository.GetListAsync(g => g.Name == WritePermission);
            var missing = developGrants
                .Where(d => !writeGrants.Any(w => w.ProviderName == d.ProviderName && w.ProviderKey == d.ProviderKey))
                .Select(d => new PermissionGrant(guidGenerator.Create(), WritePermission, d.ProviderName, d.ProviderKey, d.TenantId))
                .ToList();

            await grantRepository.InsertManyAsync(missing, autoSave: true);
            await grantRepository.DeleteManyAsync(developGrants, autoSave: true);
        }

        await definitionRepository.DeleteAsync(p => p.Name == LegacyDevelopPermission, autoSave: true);
    }
}