第三课作业：IC开发入门第一期-CFANZ编程社区

第三课作业：IC开发入门第一期
import Text "mo:base/Text";
import Nat "mo:base/Nat"
// Create a simple Counter actor.
actor Counter {
  public type HeaderField = (Text , Text);
  public type HttpRequest = {
    url : Text;
    method : Text;
    body : [Nat8];
    headers : [HeaderField];
  };
  public type HttpResponse = {
    body : Blob;
    headers : [HeaderField];
    streaming_strategy : ?StreamingStrategy;
    status_code : Nat16;
  };
  public type Key = Text;
  public type Path = Text;
  public type ChunkId = Nat;
  public type SetAssetContentArguments = {
    key : Key;
    sha256 : ?[Nat8];
    chunk_ids : [ChunkId];
    content_encoding : Text;
  };
  public type StreamingCallbackHttpResponse = {
    token : ?StreamingCallbackToken;
    body : [Nat8];
  };
  public type StreamingCallbackToken = {
      key : Text;
      sha256 : ?[Nat8];
      index : Nat;
      content_encoding : Text;
  };
  public type StreamingStrategy = {
    #Callback : {
        token : StreamingCallbackToken;
        callback : shared query StreamingCallbackToken -> async StreamingCallbackHttpResponse;
    };
  };


  stable var currentValue : Nat = 0;

  // Increment the counter with the increment function.
  public func increment() : async () {
    currentValue += 1;
  };

  // Read the counter value with a get function.
  public query func get() : async Nat {
    currentValue
  };

  // Write an arbitrary value with a set function.
  public func set(n: Nat) : async () {
    currentValue := n;
  };

    public shared query func http_request(request: HttpRequest): async HttpResponse{
      {
          body = Text.encodeUtf8("<html><body><h1>"#Nat.toText(currentValue)#"</h1></body></html>");
          headers = [];
          streaming_strategy = null;
          status_code = 200;
      }
  };
}
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