infrastructure

Chatbot.Api/Authentication/BasicAuthenticationHandler.cs

@@ -0,0 +1,61 @@
+using Chatbot.Api.Application.Services;
+using Microsoft.AspNetCore.Authentication;
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Net.Http.Headers;
+using System.Security.Claims;
+using System.Text.Encodings.Web;
+using System.Text;
+using Chatbot.Api.Domain.Entities;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+
+namespace Chatbot.Api.Authentication
+{
+    public class BasicAuthenticationHandler : AuthenticationHandler<AuthenticationSchemeOptions>
+    {
+        private readonly IUserService _userService;
+
+        public BasicAuthenticationHandler(IOptionsMonitor<AuthenticationSchemeOptions> options, ILoggerFactory logger, UrlEncoder encoder, ISystemClock clock, IUserService userService)
+            : base(options, logger, encoder, clock)
+        {
+            _userService = userService;
+        }
+
+        protected override async Task<AuthenticateResult> HandleAuthenticateAsync()
+        {
+            if (!Request.Headers.ContainsKey("Authorization"))
+                return AuthenticateResult.Fail("Missing Authorization Header");
+
+            User user;
+            try
+            {
+                var authHeader = AuthenticationHeaderValue.Parse(Request.Headers["Authorization"]);
+                var credentialBytes = Convert.FromBase64String(authHeader.Parameter);
+                var credentials = Encoding.UTF8.GetString(credentialBytes).Split(':');
+                var username = credentials.First();
+                var password = credentials.Last();
+                user = await _userService.Authenticate(username, password);
+            }
+            catch
+            {
+                return AuthenticateResult.Fail("Invalid Authorization Header");
+            }
+
+            if (user == null)
+                return AuthenticateResult.Fail("Invalid Username or Password");
+
+            var claims = new[] {
+                new Claim(ClaimTypes.NameIdentifier, user.Id.ToString()),
+                new Claim(ClaimTypes.Name, user.UserName),
+            };
+
+            var identity = new ClaimsIdentity(claims, Scheme.Name);
+            var principal = new ClaimsPrincipal(identity);
+            var ticket = new AuthenticationTicket(principal, Scheme.Name);
+
+            return AuthenticateResult.Success(ticket);
+        }
+    }
+}

Chatbot.Api/Chatbot.Api.csproj

@@ -4,5 +4,25 @@
     <TargetFramework>netcoreapp3.1</TargetFramework>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="3.1.4" />
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="$(MicrosoftExtensionsPackageVersion)" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="$(MicrosoftExtensionsPackageVersion)" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="$(MicrosoftExtensionsPackageVersion)" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="$(MicrosoftExtensionsPackageVersion)" />
+    <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.9.5" />
+    <PackageReference Include="Serilog.AspNetCore" Version="$(SerilogPackageVersion)" />
+    <PackageReference Include="Serilog.Extensions.Logging" Version="$(SerilogExtensionsPackageVersion)" />
+    <PackageReference Include="Serilog.Sinks.Console" Version="$(SerilogSinksConsolePackageVersion)" />
+    <PackageReference Include="Serilog.Sinks.MSSqlServer" Version="$(SerilogSinksMSSqlServerPackageVersion)" />
+    <PackageReference Include="AutoMapper.Extensions.Microsoft.DependencyInjection" Version="$(AutoMapperExtensionsPackageVersion)" />
+    <PackageReference Include="MediatR.Extensions.Microsoft.DependencyInjection" Version="$(MediatRPackageVersion)" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="$(SwashbucklePackageVersion)" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Chatbot.Application\Chatbot.Api.Application.csproj" />
+    <ProjectReference Include="..\Chatbot.Domain.Data\Chatbot.Api.Domain.Data.csproj" />
+  </ItemGroup>
   
 </Project>

Chatbot.Api/Controllers/SystemController.cs

@@ -0,0 +1,35 @@
+using Chatbot.Api.Application.Queries;
+using MediatR;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using System.Threading.Tasks;
+
+namespace Chatbot.Api.Controllers
+{
+    [Authorize]
+    [ApiController]
+    [Route("system")]
+    public class SystemController : ControllerBase
+    {
+        private readonly IMediator _mediator;
+
+        public SystemController(IMediator mediator)
+        {
+            _mediator = mediator;
+        }
+
+        [AllowAnonymous]
+        [HttpGet("ping")]
+        public IActionResult Ping()
+        {
+            return Ok("Chatbot api ping success.");
+        }
+
+        [HttpGet("bots")]
+        public async Task<IActionResult> GetReleaseNotes([FromRoute] GetBots.Query query)
+        {
+            var result = await _mediator.Send(query);
+            return Ok(result);
+        }
+    }
+}

Chatbot.Api/Controllers/WeatherForecastController.cs

@@ -1,39 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Mvc;
-using Microsoft.Extensions.Logging;
-
-namespace Chatbot.Api.Controllers
-{
-    [ApiController]
-    [Route("[controller]")]
-    public class WeatherForecastController : ControllerBase
-    {
-        private static readonly string[] Summaries = new[]
-        {
-            "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
-        };
-
-        private readonly ILogger<WeatherForecastController> _logger;
-
-        public WeatherForecastController(ILogger<WeatherForecastController> logger)
-        {
-            _logger = logger;
-        }
-
-        [HttpGet]
-        public IEnumerable<WeatherForecast> Get()
-        {
-            var rng = new Random();
-            return Enumerable.Range(1, 5).Select(index => new WeatherForecast
-            {
-                Date = DateTime.Now.AddDays(index),
-                TemperatureC = rng.Next(-20, 55),
-                Summary = Summaries[rng.Next(Summaries.Length)]
-            })
-            .ToArray();
-        }
-    }
-}

Chatbot.Api/Program.cs

@@ -1,11 +1,14 @@
 using System;
-using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
 using System.Linq;
-using System.Threading.Tasks;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Hosting;
-using Microsoft.Extensions.Logging;
+using Serilog;
+using Serilog.Core;
+using Serilog.Events;
+using Serilog.Sinks.MSSqlServer;
 
 namespace Chatbot.Api
 {
@@ -13,14 +16,61 @@ namespace Chatbot.Api
     {
         public static void Main(string[] args)
         {
-            CreateHostBuilder(args).Build().Run();
+            if (!args.Contains("--docker"))
+            {
+                var pathToExe = Process.GetCurrentProcess().MainModule.FileName;
+                var pathToContentRoot = Path.GetDirectoryName(pathToExe);
+                Directory.SetCurrentDirectory(pathToContentRoot);
             }
 
-        public static IHostBuilder CreateHostBuilder(string[] args) =>
+            var configuration = new ConfigurationBuilder()
+                .SetBasePath(Directory.GetCurrentDirectory())
+                .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
+                .Build();
+
+            var connectionString = configuration.GetConnectionString("DatabaseConnection");
+            var loggingLevelParam = configuration.GetValue<string>("Logging:LogLevel:Default");
+
+            Enum.TryParse(loggingLevelParam, out LogEventLevel loggingLevel);
+            var loggingLevelSwitch = new LoggingLevelSwitch(loggingLevel);
+
+            var columnOptions = new ColumnOptions();
+            columnOptions.Store.Remove(StandardColumn.Properties);
+            columnOptions.Store.Remove(StandardColumn.MessageTemplate);
+            columnOptions.Store.Add(StandardColumn.LogEvent);
+            Log.Logger = new LoggerConfiguration()
+                .MinimumLevel.ControlledBy(loggingLevelSwitch)
+                .MinimumLevel.Override("Microsoft", LogEventLevel.Warning)
+                .Enrich.FromLogContext()
+                .WriteTo.Console()
+                .WriteTo.MSSqlServer(connectionString, "__Logs_Api", autoCreateSqlTable: true, columnOptions: columnOptions)
+                .CreateLogger();
+
+            try
+            {
+                var urls = configuration.GetValue<string>("urls");
+                Log.Information("Starting chatbot API...");
+                Log.Information($"API listening on {urls}");
+                Console.WriteLine("Application started. Press Ctrl+C to shut down.");
+                CreateHostBuilder(args, configuration).Build().Run();
+            }
+            catch (Exception ex)
+            {
+                Log.Fatal(ex, "Chatbot API host terminated unexpectedly");
+            }
+            finally
+            {
+                Log.CloseAndFlush();
+            }
+        }
+
+        public static IHostBuilder CreateHostBuilder(string[] args, IConfiguration configuration) =>
             Host.CreateDefaultBuilder(args)
                 .ConfigureWebHostDefaults(webBuilder =>
                 {
-                    webBuilder.UseStartup<Startup>();
+                    webBuilder.UseStartup<Startup>()
+                        .UseConfiguration(configuration)
+                        .UseSerilog();
                 });
     }
 }

Chatbot.Api/Startup.cs

@@ -1,14 +1,18 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
+using AutoMapper;
+using Chatbot.Api.Authentication;
+using Chatbot.Api.Domain.Data;
+using Chatbot.Api.Swagger;
+using Chatbot.Application;
+using MediatR;
+using MediatR.Pipeline;
+using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
-using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
-using Microsoft.Extensions.Logging;
+using Newtonsoft.Json;
+using System.Reflection;
 
 namespace Chatbot.Api
 {
@@ -24,25 +28,60 @@ namespace Chatbot.Api
         // This method gets called by the runtime. Use this method to add services to the container.
         public void ConfigureServices(IServiceCollection services)
         {
-            services.AddControllers();
+            services.AddControllers()
+                .AddNewtonsoftJson(o => o.SerializerSettings.DateTimeZoneHandling = DateTimeZoneHandling.Utc);
+
+            // configure basic authentication 
+            services.AddAuthentication("BasicAuthentication")
+                .AddScheme<AuthenticationSchemeOptions, BasicAuthenticationHandler>("BasicAuthentication", null);
+
+            // MediatR
+            services.AddMediatR(GetMediatRAssemblies());
+            services.AddScoped(typeof(IPipelineBehavior<,>), typeof(RequestPreProcessorBehavior<,>));
+            services.AddScoped(typeof(IPipelineBehavior<,>), typeof(RequestPostProcessorBehavior<,>));
+
+            // AutoMapper
+            services.AddAutoMapper(
+                typeof(Application.Mappings.MappingProfile).Assembly);
+
+            // Swagger
+            services.AddSwagger();
+
+            // Application
+            services.AddApplicationServices();
+
+            // DataAccess
+            services.AddDataAccess();
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
         {
+            // global cors policy
+            app.UseCors(x => x
+                .AllowAnyOrigin()
+                .AllowAnyMethod()
+                .AllowAnyHeader());
+
             if (env.IsDevelopment())
             {
                 app.UseDeveloperExceptionPage();
             }
 
             app.UseRouting();
-
+            app.UseAuthentication();
             app.UseAuthorization();
-
             app.UseEndpoints(endpoints =>
             {
                 endpoints.MapControllers();
             });
+            app.ConfigureSwagger();
+        }
+
+        private Assembly[] GetMediatRAssemblies()
+        {
+            var assembly = typeof(Application.Queries.GetBots).Assembly;
+            return new Assembly[] { assembly };
         }
     }
 }

Chatbot.Api/Swagger/DtoSchemaFilter.cs

@@ -0,0 +1,36 @@
+using Chatbot.Api.Application.Commands;
+using Microsoft.OpenApi.Models;
+using Swashbuckle.AspNetCore.SwaggerGen;
+using System.Linq;
+
+namespace Chatbot.Api.Swagger
+{
+    public class DtoSchemaFilter : ISchemaFilter
+    {
+        public void Apply(OpenApiSchema schema, SchemaFilterContext context)
+        {
+            var targetType = context.Type;
+            while (targetType != null)
+            {
+                if (typeof(ICommand).IsAssignableFrom(targetType))
+                {
+                    foreach (var property in schema.Properties.ToList())
+                    {
+                        property.Value.ReadOnly = false;
+
+                        switch (property.Key)
+                        {
+                            case "metadata":
+                                schema.Properties.Remove(property.Key);
+                                break;
+                            default:
+                                break;
+                        }
+                    }
+                }
+
+                targetType = targetType.DeclaringType;
+            }
+        }
+    }
+}

Chatbot.Api/Swagger/PathParamsOperationFilter.cs

@@ -0,0 +1,34 @@
+using Microsoft.OpenApi.Models;
+using Swashbuckle.AspNetCore.SwaggerGen;
+using System;
+using System.Linq;
+using System.Text.RegularExpressions;
+
+namespace Chatbot.Api.Swagger
+{
+    public class PathParamsOperationFilter : IOperationFilter
+    {
+        public void Apply(OpenApiOperation operation, OperationFilterContext context)
+        {
+            const string paramCaptureGroup = "param";
+
+            var openApiPathParameters = operation.Parameters.Where(param => param.In == ParameterLocation.Path).ToList();
+            var pathParamRegEx = $@"\{{(?<{paramCaptureGroup}>[^\}}]+)\}}";
+
+            if (openApiPathParameters.Any())
+            {
+                var pathParameterMatches = Regex.Matches(context.ApiDescription.RelativePath, pathParamRegEx, RegexOptions.Compiled);
+                var pathParameters = pathParameterMatches.Select(x => x.Groups[paramCaptureGroup].Value);
+
+                foreach (var openApiPathParameter in openApiPathParameters)
+                {
+                    var correspondingPathParameter = pathParameters.FirstOrDefault(x =>
+                        string.Equals(x, openApiPathParameter.Name, StringComparison.InvariantCultureIgnoreCase));
+
+                    if (correspondingPathParameter != null)
+                        openApiPathParameter.Name = correspondingPathParameter;
+                }
+            }
+        }
+    }
+}

Chatbot.Api/Swagger/SwaggerExtensions.cs

@@ -0,0 +1,114 @@
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.OpenApi.Models;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Chatbot.Api.Swagger
+{
+    public static class SwaggerExtensions
+    {
+        public static IServiceCollection AddSwagger(this IServiceCollection services)
+        {
+            services.AddSwaggerGen(c =>
+            {
+                c.SwaggerDoc("v1",
+                    new OpenApiInfo
+                    {
+                        Title = "Chatbot API",
+                        Version = "v1"
+                    });
+
+                c.AddSecurityDefinition("Basic",
+                    new OpenApiSecurityScheme
+                    {
+                        In = ParameterLocation.Header,
+                        Description = @"JWT Authorization header using the Basic scheme. Enter 'Basic' [space] and then your token in the text input below. Example: 'Basic 12345abcdef'",
+                        Name = "Authorization",
+                        Scheme = "Basic",
+                        Type = SecuritySchemeType.ApiKey
+                    });
+
+                c.AddSecurityRequirement(new OpenApiSecurityRequirement()
+                {
+                    {
+                        new OpenApiSecurityScheme
+                        {
+                            Reference = new OpenApiReference
+                            {
+                                Type = ReferenceType.SecurityScheme,
+                                Id = "Basic"
+                            },
+                            Scheme = "Basic",
+                            Name = "Authorization",
+                            In = ParameterLocation.Header
+                        },
+                        new List<string>()
+                    }
+                });
+
+                c.OperationFilter<PathParamsOperationFilter>();
+                c.SchemaFilter<DtoSchemaFilter>();
+                c.CustomSchemaIds(type => type.ToString());
+            });
+
+            return services;
+        }
+
+        public static IApplicationBuilder ConfigureSwagger(this IApplicationBuilder applicationBuilder)
+        {
+            applicationBuilder.UseSwagger(c =>
+            {
+                c.PreSerializeFilters.Add((swagger, httpRequest) =>
+                {
+                    var (host, basePath, scheme) = GetUrlComponents(httpRequest);
+
+                    swagger.Servers = new List<OpenApiServer>
+                    {
+                        new OpenApiServer {Url = $"{scheme}://{host}{basePath}"}
+                    };
+                });
+                c.RouteTemplate = "swagger/{documentName}/swagger.json";
+            });
+
+            applicationBuilder.UseSwaggerUI(c =>
+            {
+                c.SwaggerEndpoint("v1/swagger.json", "Chatbot API");
+                c.RoutePrefix = $"swagger";
+            });
+
+            return applicationBuilder;
+        }
+
+        private static (string host, string basePath, string scheme) GetUrlComponents(HttpRequest request)
+        {
+            var host = ExtractHost(request);
+            var basePath = ExtractBasePath(request);
+            var scheme = ExtractScheme(request);
+
+            return (host, basePath, scheme);
+        }
+
+        private static string ExtractHost(HttpRequest request)
+        {
+            if (request.Headers.ContainsKey("X-Forwarded-Host"))
+                return request.Headers["X-Forwarded-Host"].First();
+
+            return request.Host.Value;
+        }
+
+        private static string ExtractBasePath(HttpRequest request)
+        {
+            if (request.Headers.ContainsKey("X-Forwarded-PathBase"))
+                return request.Headers["X-Forwarded-PathBase"].First();
+
+            return string.Empty;
+        }
+
+        private static string ExtractScheme(HttpRequest request)
+        {
+            return request.Headers["X-Forwarded-Proto"].FirstOrDefault() ?? request.Scheme;
+        }
+    }
+}

Chatbot.Api/WeatherForecast.cs

@@ -1,15 +0,0 @@
-using System;
-
-namespace Chatbot.Api
-{
-    public class WeatherForecast
-    {
-        public DateTime Date { get; set; }
-
-        public int TemperatureC { get; set; }
-
-        public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
-
-        public string Summary { get; set; }
-    }
-}

Chatbot.Api/appsettings.json

@@ -1,4 +1,8 @@
 {
+  "urls": "http://*:5061",
+  "ConnectionStrings": {
+    "DatabaseConnection": "***REMOVED***"
+  },
   "Logging": {
     "LogLevel": {
       "Default": "Information",
@@ -6,5 +10,9 @@
       "Microsoft.Hosting.Lifetime": "Information"
     }
   },
-  "AllowedHosts": "*"
+  "AllowedHosts": "*",
+  "Credentials": {
+    "UserName": "***REMOVED***",
+    "Password": "***REMOVED***"
+  }
 }

Chatbot.Application/Chatbot.Api.Application.csproj

@@ -4,4 +4,17 @@
     <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="AutoMapper" Version="$(AutoMapperPackageVersion)" />
+    <PackageReference Include="MediatR" Version="$(MediatRPackageVersion)" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="$(MicrosoftExtensionsPackageVersion)" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="$(MicrosoftExtensionsPackageVersion)" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="$(MicrosoftExtensionsPackageVersion)" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="$(MicrosoftExtensionsPackageVersion)" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Chatbot.Domain\Chatbot.Api.Domain.csproj" />
+  </ItemGroup>
+
 </Project>

Chatbot.Application/Class1.cs

@@ -1,8 +0,0 @@
-using System;
-
-namespace Chatbot.Application
-{
-    public class Class1
-    {
-    }
-}

Chatbot.Application/Commands/Command.cs

@@ -0,0 +1,18 @@
+using MediatR;
+
+namespace Chatbot.Api.Application.Commands
+{
+    public abstract class Command<TResponse> : ICommand, IRequest<TResponse>
+    {
+        public Metadata Metadata { get; }
+
+        protected Command(Metadata metadata)
+        {
+            Metadata = metadata;
+        }
+    }
+
+    public interface ICommand
+    {
+    }
+}

Chatbot.Application/Commands/Metadata.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+
+namespace Chatbot.Api.Application.Commands
+{
+    public class Metadata : Dictionary<string, string>
+    {
+        public const string CorrelationIdKey = "CorrelationId";
+
+        public Guid CorrelationId
+        {
+            get
+            {
+                return Guid.Parse(this[CorrelationIdKey]);
+            }
+            set
+            {
+                if (ContainsKey(CorrelationIdKey))
+                    this[CorrelationIdKey] = value.ToString();
+                else
+                    Add(CorrelationIdKey, value.ToString());
+            }
+        }
+    }
+}

Chatbot.Application/DependencyInjectionExtensions.cs

@@ -0,0 +1,15 @@
+using Chatbot.Api.Application.Services;
+using Chatbot.Api.Domain.Services;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Chatbot.Application
+{
+    public static class DependencyInjectionExtensions
+    {
+        public static void AddApplicationServices(this IServiceCollection services)
+        {
+            services.AddSingleton<IParamProvider, ParamProvider>();
+            services.AddScoped<IUserService, UserService>();
+        }
+    }
+}

Chatbot.Application/Mappings/MappingProfile.cs

@@ -0,0 +1,14 @@
+using AutoMapper;
+using Chatbot.Api.Application.Queries;
+using Chatbot.Api.Domain.Entities;
+
+namespace Chatbot.Api.Application.Mappings
+{
+    public class MappingProfile : Profile
+    {
+        public MappingProfile()
+        {
+            CreateMap<Bot, GetBots.Model>();
+        }
+    }
+}

Chatbot.Application/Queries/GetBots.cs

@@ -0,0 +1,45 @@
+using AutoMapper;
+using Chatbot.Api.Domain.Repositories;
+using MediatR;
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Chatbot.Api.Application.Queries
+{
+    public class GetBots
+    {
+        public class Query : Query<Model[]>
+        {
+            public Query() { }
+        }
+
+        public class Model
+        {
+            public Guid BotId { get; set; }
+            public string BotCode { get; set; }
+            public string BotName { get; set; }
+            public DateTime CreationDate { get; set; }
+        }
+
+        public class QueryHandler : IRequestHandler<Query, Model[]>
+        {
+            private readonly IBotRepository _botRepository;
+            private readonly IMapper _mapper;
+
+            public QueryHandler(IBotRepository botRepository, IMapper mapper)
+            {
+                _botRepository = botRepository;
+                _mapper = mapper;
+            }
+
+            public async Task<Model[]> Handle(Query request, CancellationToken cancellationToken)
+            {
+                var bots = await _botRepository.GetBots();
+                var result = _mapper.Map<Model[]>(bots);
+
+                return result;
+            }
+        }
+    }
+}

Chatbot.Application/Queries/Query.cs

@@ -0,0 +1,8 @@
+using MediatR;
+
+namespace Chatbot.Api.Application.Queries
+{
+    public abstract class Query<TResponse> : IRequest<TResponse>, IBaseRequest
+    {
+    }
+}

Chatbot.Application/Services/ParamProvider.cs

@@ -0,0 +1,18 @@
+using Chatbot.Api.Domain.Models.Settings;
+using Chatbot.Api.Domain.Services;
+using Microsoft.Extensions.Configuration;
+
+namespace Chatbot.Api.Application.Services
+{
+    public class ParamProvider : IParamProvider
+    {
+        private readonly IConfiguration _configuration;
+
+        public ParamProvider(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public Credentials Credentials => _configuration.GetSection("Credentials").Get<Credentials>();
+    }
+}

Chatbot.Application/Services/UserService.cs

@@ -0,0 +1,34 @@
+using Chatbot.Api.Domain.Entities;
+using Chatbot.Api.Domain.Services;
+using System.Threading.Tasks;
+
+namespace Chatbot.Api.Application.Services
+{
+    public interface IUserService
+    {
+        Task<User> Authenticate(string username, string password);
+    }
+
+    public class UserService : IUserService
+    {
+        private readonly IParamProvider _paramProvider;
+
+        public UserService(IParamProvider paramProvider)
+        {
+            _paramProvider = paramProvider;
+        }
+
+        public async Task<User> Authenticate(string username, string password)
+        {
+            return await Task.Run(() => CheckCredentials(username, password));
+        }
+
+        private User CheckCredentials(string username, string password)
+        {
+            if (_paramProvider.Credentials.UserName == username && _paramProvider.Credentials.Password == password)
+                return new User() { UserName = username, Id = 1 };
+            else
+                return null;
+        }
+    }
+}

Chatbot.Domain.Data/Chatbot.Api.Domain.Data.csproj

@@ -4,4 +4,12 @@
     <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="$(EntityFrameworkCorePackageVersion)" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Chatbot.Domain\Chatbot.Api.Domain.csproj" />
+  </ItemGroup>
+
 </Project>

Chatbot.Domain.Data/Class1.cs

@@ -1,8 +0,0 @@
-using System;
-
-namespace Chatbot.Domain.Data
-{
-    public class Class1
-    {
-    }
-}

Chatbot.Domain.Data/DbContexts/BotDbContext.cs

@@ -0,0 +1,25 @@
+using Chatbot.Api.Domain.Data.EntityTypeConfiguration;
+using Chatbot.Api.Domain.Entities;
+using Microsoft.EntityFrameworkCore;
+
+namespace Chatbot.Api.Domain.Data.DbContexts
+{
+    public class BotDbContext : DbContext
+    {
+        public DbSet<Bot> Bots { get; set; }
+
+        public BotDbContext(DbContextOptions<BotDbContext> options)
+            : base(options)
+        {
+            base.ChangeTracker.QueryTrackingBehavior = QueryTrackingBehavior.TrackAll;
+            base.ChangeTracker.AutoDetectChangesEnabled = true;
+        }
+
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+            base.OnModelCreating(modelBuilder);
+
+            modelBuilder.ApplyConfiguration(new BotConfiguration());
+        }
+    }
+}

Chatbot.Domain.Data/DbContexts/ChatDbContext.cs

@@ -0,0 +1,16 @@
+using Microsoft.EntityFrameworkCore;
+
+namespace Chatbot.Api.Domain.Data.DbContexts
+{
+    public class ChatDbContext : DbContext
+    {
+        public ChatDbContext(DbContextOptions<ChatDbContext> options)
+            : base(options)
+        {
+            base.ChangeTracker.QueryTrackingBehavior = QueryTrackingBehavior.TrackAll;
+            base.ChangeTracker.AutoDetectChangesEnabled = true;
+        }
+
+
+    }
+}

Chatbot.Domain.Data/DependencyInjectionExtensions.cs

@@ -0,0 +1,26 @@
+using Chatbot.Api.Domain.Data.DbContexts;
+using Chatbot.Api.Domain.Data.Repositories;
+using Chatbot.Api.Domain.Repositories;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.EntityFrameworkCore;
+
+namespace Chatbot.Api.Domain.Data
+{
+    public static class DependencyInjectionExtensions
+    {
+        public static void AddDataAccess(this IServiceCollection services)
+        {
+            services.AddScoped<IBotRepository, BotRepository>();
+
+            services
+                .AddDbContextPool<BotDbContext>(
+                 (serviceProvider, options) =>
+                 {
+                     var configuration = serviceProvider.GetService<IConfiguration>();
+                     var connectionString = configuration.GetConnectionString("DatabaseConnection");
+                     options.UseSqlServer(connectionString);
+                 });
+        }
+    }
+}

Chatbot.Domain.Data/EntityTypeConfiguration/BotConfiguration.cs

@@ -0,0 +1,14 @@
+using Chatbot.Api.Domain.Entities;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace Chatbot.Api.Domain.Data.EntityTypeConfiguration
+{
+    class BotConfiguration : IEntityTypeConfiguration<Bot>
+    {
+        public void Configure(EntityTypeBuilder<Bot> builder)
+        {
+            builder.ToTable("Bot").HasKey(key => key.BotId);
+        }
+    }
+}

Chatbot.Domain.Data/Repositories/BotRepository.cs

@@ -0,0 +1,23 @@
+using Chatbot.Api.Domain.Data.DbContexts;
+using Chatbot.Api.Domain.Entities;
+using Chatbot.Api.Domain.Repositories;
+using Microsoft.EntityFrameworkCore;
+using System.Threading.Tasks;
+
+namespace Chatbot.Api.Domain.Data.Repositories
+{
+    class BotRepository : IBotRepository
+    {
+        private readonly BotDbContext _dbContext;
+
+        public BotRepository(BotDbContext dbContext)
+        {
+            _dbContext = dbContext;
+        }
+
+        public async Task<Bot[]> GetBots()
+        {
+            return await _dbContext.Bots.ToArrayAsync();
+        }
+    }
+}

Chatbot.Domain.Data/Scripts/01.Chatbot tables.sql

@@ -0,0 +1,70 @@
+if not exists (select top 1 1 from sys.objects where name = 'Bot' and type = 'U')
+begin
+	create table Bot
+	(
+		BotId uniqueidentifier constraint DF_Bot_BotId default newid() not null,
+		BotCode varchar(100) not null,
+		BotName varchar(255) not null,
+		CreationDate datetime constraint DF_Bot_CreationDate default getdate(),
+		constraint PK_Bot primary key (BotId)
+	)
+end
+go
+
+if not exists (select top 1 1 from sys.objects where name = 'BotSession' and type = 'U')
+begin
+	create table BotSession
+	(
+		SessionId uniqueidentifier constraint DF_BotSession_SessionId default newid() not null,
+		StartDate datetime constraint DF_BotSession_StartDate default getdate(),
+		BotId uniqueidentifier not null,
+		ExternalId uniqueidentifier not null,
+		ClientApplication varchar(100) not null,
+		UserKey varchar(100) not null,
+		constraint PK_BotSession primary key (SessionId),
+		constraint FK_BotSession_Bot foreign key (BotId) references Bot(BotId)
+	)
+end
+go
+
+if not exists (select top 1 1 from sys.objects where name = 'Chat' and type = 'U')
+begin
+	create table Chat
+	(
+		ChatId uniqueidentifier constraint DF_Chat_ChatId default newid() not null,
+		SessionId uniqueidentifier not null,
+		StartDate datetime constraint DF_Chat_StartDate default getdate(),
+		StopDate datetime,
+		constraint PK_Chat primary key (ChatId),
+		constraint FK_Chat_BotSession foreign key (ChatId) references BotSession(SessionId)
+	)
+end
+go
+
+if not exists (select top 1 1 from sys.objects where name = 'MessageSource' and type = 'U')
+begin
+	create table MessageSource
+	(
+		MessageSourceId int not null,
+		MessageSourceCode varchar(20) not null,
+		MessageSourceName varchar(100) not null,
+		constraint PK_MessageSource primary key (MessageSourceId)
+	)
+end
+go
+
+if not exists (select top 1 1 from sys.objects where name = 'ChatMessage' and type = 'U')
+begin
+	create table ChatMessage
+	(
+		MessageId int identity(0, 1),
+		ChatId uniqueidentifier not null,
+		MessageSourceId int not null,
+		MessageDate datetime constraint DF_ChatMessage_MessageDate default getdate(),
+		MessageContent varchar(max)
+		constraint PK_ChatMessage primary key (MessageId),
+		constraint FK_ChatMessage_Chat foreign key (ChatId) references Chat(ChatId),
+		constraint FK_ChatMessage_MessageSource foreign key (MessageSourceId) references MessageSource(MessageSourceId)
+	)
+end
+go

Chatbot.Domain.Data/Scripts/02.Insert into MessageSource.sql

@@ -0,0 +1,13 @@
+if not exists (select top 1 1 from MessageSource where MessageSourceCode like 'BOT')
+begin
+	insert into MessageSource (MessageSourceId, MessageSourceCode, MessageSourceName)
+	values (1, 'BOT', 'Bot')
+end
+go
+
+if not exists (select top 1 1 from MessageSource where MessageSourceCode like 'USER')
+begin
+	insert into MessageSource (MessageSourceId, MessageSourceCode, MessageSourceName)
+	values (2, 'USER', 'User')
+end
+go

Chatbot.Domain/Class1.cs

@@ -1,8 +0,0 @@
-using System;
-
-namespace Chatbot.Domain
-{
-    public class Class1
-    {
-    }
-}

Chatbot.Domain/Entities/Bot.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace Chatbot.Api.Domain.Entities
+{
+    public class Bot
+    {
+        public Guid BotId { get; set; }
+        public string BotCode { get; set; }
+        public string BotName { get; set; }
+        public DateTime CreationDate { get; set; }
+    }
+}

Chatbot.Domain/Entities/User.cs

@@ -0,0 +1,9 @@
+namespace Chatbot.Api.Domain.Entities
+{
+    public class User
+    {
+        public int Id { get; set; }
+        public string UserName { get; set; }
+        public string Password { get; set; }
+    }
+}

Chatbot.Domain/Models/Settings/Credentials.cs

@@ -0,0 +1,8 @@
+namespace Chatbot.Api.Domain.Models.Settings
+{
+    public class Credentials
+    {
+        public string UserName { get; set; }
+        public string Password { get; set; }
+    }
+}

Chatbot.Domain/Repositories/IBotRepository.cs

@@ -0,0 +1,10 @@
+using Chatbot.Api.Domain.Entities;
+using System.Threading.Tasks;
+
+namespace Chatbot.Api.Domain.Repositories
+{
+    public interface IBotRepository
+    {
+        Task<Bot[]> GetBots();
+    }
+}

Chatbot.Domain/Services/IParamProvider.cs

@@ -0,0 +1,9 @@
+using Chatbot.Api.Domain.Models.Settings;
+
+namespace Chatbot.Api.Domain.Services
+{
+    public interface IParamProvider
+    {
+        Credentials Credentials { get;  }
+    }
+}

Chatbot.sln

@@ -11,6 +11,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 		.gitignore = .gitignore
 		dependencies.props = dependencies.props
 		Directory.Build.props = Directory.Build.props
+		Notes.txt = Notes.txt
 	EndProjectSection
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Chatbot.Api.Application", "Chatbot.Application\Chatbot.Api.Application.csproj", "{3759725E-8E75-44F4-86A3-34CC1EAC1D6C}"

Notes.txt

@@ -0,0 +1 @@
+Basic ***REMOVED***