async provideCompletionItems()

in src/provider/autoCompletion.ts [10:68]
50 lines of code
5 McCabe index (conditional complexity)

  async provideCompletionItems(
    document: vscode.TextDocument,
    position: vscode.Position,
    token: vscode.CancellationToken,
    context: vscode.CompletionContext,
  ) {
    const language = vscode.window.activeTextEditor?.document.languageId;
    const service = alicloudAPIMessageService;
    const items = service.pontManager.localPontSpecs
      .map((pontSpec) => {
        return AlicloudApiCommands.getPickItems(pontSpec);
      })
      .reduce((pre, next) => pre.concat(next), []);

    // 支持换行 代码从起始位置到输入位置
    const text = document.getText(
      new vscode.Range(new vscode.Position(position.line, position.character - 1), position),
    );

    let completionItems = [] as any;

    // 支持已订阅的API搜索
    if (items?.find((item) => item?.label?.toLocaleLowerCase()?.includes(text?.toLocaleLowerCase()))) {
      const searchAPIs = items?.filter((item) => item?.label?.toLocaleLowerCase().includes(text?.toLocaleLowerCase()));
      completionItems = searchAPIs?.map((api) => {
        let completionItem = new vscode.CompletionItem(api.label, vscode.CompletionItemKind["Interface"]);
        completionItem.detail = api.detail;
        completionItem.documentation = api.summary || api.description;
        completionItem.tags = api.tags;

        // 代码替换位置，查找位置会同步应用
        completionItem.range = new vscode.Range(
          new vscode.Position(position.line, position.character - text.length),
          new vscode.Position(position.line, position.character),
        );
        return completionItem;
      });
      if (language === "java") {
        const javaAsyncCompletionItems = searchAPIs?.map((api) => {
          let javaAsyncCompletionItem = new vscode.CompletionItem(
            api.label + "(java-async)",
            vscode.CompletionItemKind["Interface"],
          );
          javaAsyncCompletionItem.detail = api.detail;
          javaAsyncCompletionItem.documentation = api.summary || api.description;
          javaAsyncCompletionItem.tags = api.tags;

          // 代码替换位置，查找位置会同步应用
          javaAsyncCompletionItem.range = new vscode.Range(
            new vscode.Position(position.line, position.character - text.length),
            new vscode.Position(position.line, position.character),
          );
          return javaAsyncCompletionItem;
        });
        completionItems = [...completionItems, ...javaAsyncCompletionItems];
      }
      return completionItems;
    }
  }