microsoft/teams.net
Publicmirrored fromhttps://github.com/microsoft/teams.netAvailable
Libraries/Microsoft.Teams.Apps/Routing/Route.cs
100lines · modecode
| 1 | // Copyright (c) Microsoft Corporation. All rights reserved. |
| 2 | // Licensed under the MIT License. |
| 3 | |
| 4 | using System.Reflection; |
| 5 | |
| 6 | using Microsoft.Teams.Api.Activities; |
| 7 | using Microsoft.Teams.Apps.Activities; |
| 8 | using Microsoft.Teams.Apps.Annotations; |
| 9 | using Microsoft.Teams.Common.Extensions; |
| 10 | |
| 11 | namespace Microsoft.Teams.Apps.Routing; |
| 12 | |
| 13 | public interface IRoute |
| 14 | { |
| 15 | public string? Name { get; } |
| 16 | public RouteType Type { get; } |
| 17 | |
| 18 | public bool Select(IActivity activity); |
| 19 | public Task<object?> Invoke(IContext<IActivity> context); |
| 20 | } |
| 21 | |
| 22 | public class Route : IRoute |
| 23 | { |
| 24 | public required string Name { get; set; } |
| 25 | public RouteType Type { get; set; } = RouteType.User; |
| 26 | public required Func<IActivity, bool> Selector { get; set; } |
| 27 | public required Func<IContext<IActivity>, Task<object?>> Handler { get; set; } |
| 28 | |
| 29 | public bool Select(IActivity activity) => Selector(activity); |
| 30 | public async Task<object?> Invoke(IContext<IActivity> context) => await Handler(context); |
| 31 | } |
| 32 | |
| 33 | public class AttributeRoute : IRoute |
| 34 | { |
| 35 | public string? Name => Attr.Name?.Value; |
| 36 | public RouteType Type { get; set; } = RouteType.User; |
| 37 | public required ActivityAttribute Attr { get; set; } |
| 38 | public required MethodInfo Method { get; set; } |
| 39 | public object? Object { get; set; } |
| 40 | |
| 41 | public bool Select(IActivity activity) => Attr.Select(activity); |
| 42 | public ValidationResult Validate() |
| 43 | { |
| 44 | var result = new ValidationResult(); |
| 45 | |
| 46 | foreach (var param in Method.GetParameters()) |
| 47 | { |
| 48 | var attribute = param.GetCustomAttribute<ContextAccessorAttribute>(true); |
| 49 | var generic = param.ParameterType.GenericTypeArguments.FirstOrDefault(); |
| 50 | var isContext = generic?.IsAssignableTo(Attr.Type) ?? false; |
| 51 | |
| 52 | if (attribute is null && !isContext) |
| 53 | { |
| 54 | result.AddError(param.Name ?? "??", "type must be `IContext<TActivity>` or an `IContext` accessor attribute"); |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | return result; |
| 59 | } |
| 60 | |
| 61 | public Task<object?> Invoke(IContext<IActivity> context) |
| 62 | { |
| 63 | var args = Method.GetParameters().Select(param => |
| 64 | { |
| 65 | var attribute = param.GetCustomAttribute<ContextAccessorAttribute>(true); |
| 66 | return attribute is null ? Attr.Coerce(context) : attribute.GetValue(context, param); |
| 67 | }); |
| 68 | |
| 69 | return Method.InvokeAsync(Object, args?.ToArray()); |
| 70 | } |
| 71 | |
| 72 | public class ValidationResult |
| 73 | { |
| 74 | /// <summary> |
| 75 | /// the errors that were found |
| 76 | /// </summary> |
| 77 | public IList<ParameterError> Errors { get; set; } = []; |
| 78 | |
| 79 | /// <summary> |
| 80 | /// is the result valid |
| 81 | /// </summary> |
| 82 | public bool Valid => Errors.Count == 0; |
| 83 | |
| 84 | /// <summary> |
| 85 | /// combine all the errors into |
| 86 | /// one message string |
| 87 | /// </summary> |
| 88 | public override string ToString() => string.Join(Environment.NewLine, Errors.Select(err => $"{err.Name} => {err.Message}")); |
| 89 | |
| 90 | /// <summary> |
| 91 | /// add a parameter error to the result |
| 92 | /// </summary> |
| 93 | public void AddError(string name, string message) |
| 94 | { |
| 95 | Errors.Add(new(name, message)); |
| 96 | } |
| 97 | |
| 98 | public record ParameterError(string Name, string Message); |
| 99 | } |
| 100 | } |