microsoft/teams.net
Publicmirrored fromhttps://github.com/microsoft/teams.netAvailable
Libraries/Microsoft.Teams.AI/Function.cs
116lines · modecode
| 1 | using System.Reflection; |
| 2 | using System.Text.Json; |
| 3 | using System.Text.Json.Nodes; |
| 4 | using System.Text.Json.Serialization; |
| 5 | |
| 6 | using Json.Schema; |
| 7 | |
| 8 | using Microsoft.Teams.AI.Annotations; |
| 9 | using Microsoft.Teams.AI.Messages; |
| 10 | using Microsoft.Teams.Common.Extensions; |
| 11 | using Microsoft.Teams.Common.Json; |
| 12 | |
| 13 | namespace Microsoft.Teams.AI; |
| 14 | |
| 15 | /// <summary> |
| 16 | /// defines a block of code that |
| 17 | /// can be called by a model |
| 18 | /// </summary> |
| 19 | [JsonConverter(typeof(TrueTypeJsonConverter<IFunction>))] |
| 20 | public interface IFunction |
| 21 | { |
| 22 | /// <summary> |
| 23 | /// the unique name |
| 24 | /// </summary> |
| 25 | public string Name { get; } |
| 26 | |
| 27 | /// <summary> |
| 28 | /// a description of what the function |
| 29 | /// should be used for |
| 30 | /// </summary> |
| 31 | public string? Description { get; } |
| 32 | |
| 33 | /// <summary> |
| 34 | /// the Json Schema representing what |
| 35 | /// parameters the function accepts |
| 36 | /// </summary> |
| 37 | public JsonSchema? Parameters { get; } |
| 38 | } |
| 39 | |
| 40 | /// <summary> |
| 41 | /// defines a block of code that |
| 42 | /// can be called by a model |
| 43 | /// </summary> |
| 44 | public class Function : IFunction |
| 45 | { |
| 46 | [JsonPropertyName("name")] |
| 47 | [JsonPropertyOrder(0)] |
| 48 | public string Name { get; set; } |
| 49 | |
| 50 | [JsonPropertyName("description")] |
| 51 | [JsonPropertyOrder(1)] |
| 52 | public string? Description { get; set; } |
| 53 | |
| 54 | [JsonPropertyName("parameters")] |
| 55 | [JsonPropertyOrder(2)] |
| 56 | public JsonSchema? Parameters { get; set; } |
| 57 | |
| 58 | [JsonIgnore] |
| 59 | public Delegate Handler { get; set; } |
| 60 | |
| 61 | public Function(string name, string? description, Delegate handler) |
| 62 | { |
| 63 | Name = name; |
| 64 | Description = description; |
| 65 | Handler = handler; |
| 66 | } |
| 67 | |
| 68 | public Function(string name, string? description, JsonSchema? parameters, Delegate handler) |
| 69 | { |
| 70 | Name = name; |
| 71 | Description = description; |
| 72 | Parameters = parameters; |
| 73 | Handler = handler; |
| 74 | } |
| 75 | |
| 76 | internal Task<object?> Invoke(FunctionCall call) |
| 77 | { |
| 78 | if (call.Arguments is not null && Parameters is not null) |
| 79 | { |
| 80 | var valid = Parameters.Evaluate(JsonNode.Parse(call.Arguments), new() { EvaluateAs = SpecVersion.DraftNext }); |
| 81 | |
| 82 | if (!valid.IsValid) |
| 83 | { |
| 84 | Console.WriteLine(JsonSerializer.Serialize(valid)); |
| 85 | throw new ArgumentException( |
| 86 | string.Join("\n", valid.Errors?.Select(e => $"{e.Key} => {e.Value}") ?? []) |
| 87 | ); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | var args = call.Parse() ?? new Dictionary<string, object?>(); |
| 92 | var method = Handler.GetMethodInfo(); |
| 93 | var parameters = method.GetParameters().Select(param => |
| 94 | { |
| 95 | var name = param.GetCustomAttribute<ParamAttribute>()?.Name ?? param.Name ?? param.Position.ToString(); |
| 96 | args.TryGetValue(name, out var value); |
| 97 | |
| 98 | if (value is JsonElement element) |
| 99 | { |
| 100 | return element.Deserialize(param.ParameterType); |
| 101 | } |
| 102 | |
| 103 | return value; |
| 104 | }).ToArray(); |
| 105 | |
| 106 | return method.InvokeAsync(Handler.Target, parameters); |
| 107 | } |
| 108 | |
| 109 | public override string ToString() |
| 110 | { |
| 111 | return JsonSerializer.Serialize(this, new JsonSerializerOptions() |
| 112 | { |
| 113 | WriteIndented = true |
| 114 | }); |
| 115 | } |
| 116 | } |