using AsbCloudApp.Data;
using AsbCloudDb.Model;
using AsbCloudInfrastructure.Services;
using AsbCloudInfrastructure.Services.Cache;
using Microsoft.EntityFrameworkCore;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Xunit;

namespace AsbCloudWebApi.Tests.ServicesTests
{
    public class UserRoleServiceTest
    {
        private readonly AsbCloudDbContext context;
        private readonly CacheDb cacheDb;

        private readonly List<UserRole> roles = new() {
            new UserRole { Id = 1_000_001, Caption = "role 1 level 0" },
            new UserRole { Id = 1_000_002, Caption = "role 2 level 1" },
            new UserRole { Id = 1_000_003, Caption = "role 3 level 1" },
            new UserRole { Id = 1_000_004, Caption = "role 4 level 2" },
        };

        private readonly List<RelationUserRoleUserRole> relationRoleRole = new()
        {
            new RelationUserRoleUserRole { Id = 1_000_002, IdInclude = 1_000_001 },
            new RelationUserRoleUserRole { Id = 1_000_003, IdInclude = 1_000_001 },
            new RelationUserRoleUserRole { Id = 1_000_004, IdInclude = 1_000_002 },
            new RelationUserRoleUserRole { Id = 1_000_004, IdInclude = 1_000_003 },
        };

        private readonly List<Permission> permissions = new()
        {
            new Permission { Id = 2_000_001, Name = "permission 1" },
            new Permission { Id = 2_000_002, Name = "permission 2" },
            new Permission { Id = 2_000_003, Name = "permission 3" },
            new Permission { Id = 2_000_004, Name = "permission 4" },
        };

        private readonly List<RelationUserRolePermission> relationRolePermission = new()
        {
            new RelationUserRolePermission { IdUserRole = 1_000_001, IdPermission = 2_000_001 },
            new RelationUserRolePermission { IdUserRole = 1_000_002, IdPermission = 2_000_002 },
            new RelationUserRolePermission { IdUserRole = 1_000_003, IdPermission = 2_000_003 },
            new RelationUserRolePermission { IdUserRole = 1_000_004, IdPermission = 2_000_004 },
        };

        public UserRoleServiceTest()
        {
            cacheDb = new CacheDb();
            context = TestHelpter.MakeTestContext();
            context.UserRoles.RemoveRange(roles);
            context.Permissions.RemoveRange(permissions);
            context.SaveChanges();
            context.UserRoles.AddRange(roles);
            context.Permissions.AddRange(permissions);
            context.SaveChanges();
            context.RelationUserRoleUserRoles.AddRange(relationRoleRole);
            context.RelationUserRolePermissions.AddRange(relationRolePermission);
            context.SaveChanges();
        }

        ~UserRoleServiceTest(){
            context.UserRoles.RemoveRange(roles);
            context.Permissions.RemoveRange(permissions);
            context.RelationUserRoleUserRoles.RemoveRange(relationRoleRole);
            context.RelationUserRolePermissions.RemoveRange(relationRolePermission);
            context.SaveChanges();
            context.Dispose();
        }

        [Fact]
        public void GetNestedById_return_4_items()
        {
            var service = new UserRoleService(context, cacheDb);
            var nestedRoles = service.GetNestedById(1_000_004);
            Assert.Equal(roles.Count, nestedRoles.Count());
        }

        [Fact]
        public void HasPermission_return_true()
        {
            var service = new UserRoleService(context, cacheDb);
            var result = service.HasPermission(new int[] { 1_000_004 }, "permission 1");
            Assert.True(result);
        }

        [Fact]
        public void HasPermission_return_false()
        {
            var service = new UserRoleService(context, cacheDb);
            var result = service.HasPermission(new int[] { 1_000_003 }, "permission 2");
            Assert.False(result);
        }

        [Fact]
        public async Task InsertAsync_returns_id()
        {
            var service = new UserRoleService(context, cacheDb);
            var newRole = new UserRoleDto
            {
                Caption = "new role",
                IdType = 0,
            };
            var id = await service.InsertAsync(newRole, CancellationToken.None );
            Assert.NotEqual(0, id);
        }

        [Fact]
        public async Task InsertAsync_updates_relation_to_permission()
        {
            var service = new UserRoleService(context, cacheDb);
            var newRole = new UserRoleDto
            {
                Caption = "new role",
                IdType = 0,
                Permissions = new[] { new PermissionDto{ Id = 2_000_001 } },
            };
            var id = await service.InsertAsync(newRole, CancellationToken.None);            
            var entity = await service.GetAsync(id);
            Assert.Equal(newRole.Permissions.Count(), entity.Permissions.Count());
        }

        [Fact]
        public async Task InsertAsync_updates_relation_to_role()
        {
            var service = new UserRoleService(context, cacheDb);
            var newRole = new UserRoleDto
            {
                Caption = "new role",
                IdType = 0,
                Roles = new [] { new UserRoleDto { Id = 1_000_001 } }
            };
            var id = await service.InsertAsync(newRole, CancellationToken.None);
            var entity = await service.GetAsync(id);
            Assert.Equal(newRole.Roles.Count, entity.Roles.Count);
        }

        [Fact]
        public async Task UpdateAsync_returns_id()
        {
            var service = new UserRoleService(context, cacheDb);
            const int updateId = 1_000_002;
            var modRole = new UserRoleDto 
            { 
                Id = updateId, 
                Caption = "role 2 level 1" 
            };
            var id = await service.UpdateAsync(modRole, CancellationToken.None);
            Assert.Equal(updateId, id);
        }

        [Fact]
        public async Task UpdateAsync_updates_relation_to_permission()
        {
            var service = new UserRoleService(context, cacheDb);
            const int updateId = 1_000_002;
            var modRole = new UserRoleDto
            {
                Id = updateId,
                Caption = "role 2 level 1",
                Permissions = new[] { new PermissionDto { Id = 2_000_001 } },
            };
            var id = await service.UpdateAsync(modRole, CancellationToken.None);
            var entity = await service.GetAsync(id);
            Assert.Equal(modRole.Permissions.Count(), entity.Permissions.Count());
        }

        [Fact]
        public async Task UpdateAsync_updates_relation_to_role()
        {
            var service = new UserRoleService(context, cacheDb);
            const int updateId = 1_000_002;
            var modRole = new UserRoleDto
            {
                Id = updateId,
                Caption = "role 2 level 1",
                Roles = new[] { new UserRoleDto { Id = 1_000_001 } }
            };
            var id = await service.UpdateAsync(modRole, CancellationToken.None);
            var entity = await service.GetAsync(id);
            Assert.Equal(modRole.Roles.Count(), entity.Roles.Count());
        }
    }
}