typedsocket/ts/typedsocket.classes.typedsocket.ts

import * as plugins from './typedsocket.plugins.js';

const publicRoleName = 'publicRoleName';
const publicRolePass = 'publicRolePass';

export type TTypedSocketSide = 'server' | 'client';

export class TypedSocket {
  // STATIC
  /**
   * creates a typedsocket server
   * note: this will fail in browser environments as server libs are not bundled.
   */
  public static async createServer(
    typedrouterArg: plugins.typedrequest.TypedRouter,
    smartexpressServerArg?: any
  ): Promise<TypedSocket> {
    const smartsocketServer = new plugins.smartsocket.Smartsocket({
      alias: 'typedsocketServer',
      port: 3000,
    });
    if (smartexpressServerArg) {
      smartsocketServer.setExternalServer('smartexpress', smartexpressServerArg);
    }

    smartsocketServer.socketFunctions.add(
      new plugins.smartsocket.SocketFunction({
        funcName: 'processMessage',
        funcDef: async (dataArg, socketConnectionArg) => {
          return typedrouterArg.routeAndAddResponse(dataArg);
        },
      })
    );
    const typedsocket = new TypedSocket(
      'server',
      typedrouterArg,
      async <T extends plugins.typedrequestInterfaces.ITypedRequest>(
        dataArg: T,
        targetConnectionArg?: plugins.smartsocket.SocketConnection
      ): Promise<T> => {
        if (!targetConnectionArg) {
          if ((smartsocketServer.socketConnections.getArray().length = 1)) {
            console.log(
              'Since no targetConnection was supplied and there is only one active one present, choosing that one automatically'
            );
            targetConnectionArg = smartsocketServer.socketConnections.getArray()[0];
          } else {
            throw new Error(
              'you need to specify the wanted targetConnection. Currently no target is selectable automatically.'
            );
          }
        }
        const response: T = (await smartsocketServer.clientCall(
          'processMessage',
          dataArg,
          targetConnectionArg
        )) as any;
        return response;
      },
      smartsocketServer
    );
    await smartsocketServer.start();

    return typedsocket;
  }

  public static async createClient(
    typedrouterArg: plugins.typedrequest.TypedRouter,
    serverUrlArg: string,
    aliasArg = 'clientArg'
  ): Promise<TypedSocket> {
    const domain = new plugins.smartstring.Domain(serverUrlArg);

    const socketOptions: plugins.smartsocket.ISmartsocketClientOptions = {
      alias: aliasArg,
      port: domain.port || 3000,
      url: `${domain.nodeParsedUrl.protocol}//${domain.nodeParsedUrl.hostname}`,
      autoReconnect: true,
    };
    console.log(`starting typedsocket with the following settings:`);
    console.log(socketOptions);
    const smartsocketClient = new plugins.smartsocket.SmartsocketClient(socketOptions);
    smartsocketClient.addSocketFunction(
      new plugins.smartsocket.SocketFunction({
        funcName: 'processMessage',
        funcDef: async (dataArg, socketConnectionArg) => {
          return typedrouterArg.routeAndAddResponse(dataArg);
        },
      })
    );
    const typedsocket = new TypedSocket(
      'client',
      typedrouterArg,
      async <T extends plugins.typedrequestInterfaces.ITypedRequest>(dataArg: T): Promise<T> => {
        const response: T = smartsocketClient.serverCall('processMessage', dataArg) as any as T;
        return response;
      },
      smartsocketClient
    );

    await smartsocketClient.connect();

    return typedsocket;
  }

  // INSTANCE
  public side: TTypedSocketSide;
  public typedrouter: plugins.typedrequest.TypedRouter;
  private postMethod: plugins.typedrequest.IPostMethod &
    ((
      typedRequestPostObject: plugins.typedrequestInterfaces.ITypedRequest,
      socketConnectionArg?: plugins.smartsocket.SocketConnection
    ) => Promise<plugins.typedrequestInterfaces.ITypedRequest>);
  private socketServerOrClient:
    | plugins.smartsocket.Smartsocket
    | plugins.smartsocket.SmartsocketClient;
  constructor(
    sideArg: TTypedSocketSide,
    typedrouterArg: plugins.typedrequest.TypedRouter,
    postMethodArg: plugins.typedrequest.IPostMethod,
    socketServerOrClientArg: plugins.smartsocket.Smartsocket | plugins.smartsocket.SmartsocketClient
  ) {
    this.side = sideArg;
    this.typedrouter = typedrouterArg;
    this.postMethod = postMethodArg;
    this.socketServerOrClient = socketServerOrClientArg;
  }

  public addTag<T extends plugins.typedrequestInterfaces.ITag = any>(
    nameArg: T['name'],
    payloadArg: T['payload']
  ) {
    if (
      this.side === 'client' &&
      this.socketServerOrClient instanceof plugins.smartsocket.SmartsocketClient
    ) {
      this.socketServerOrClient.socketConnection.addTag({
        id: nameArg,
        payload: payloadArg,
      });
    } else {
      throw new Error('tagging is only supported on clients');
    }
  }

  public createTypedRequest<T extends plugins.typedrequestInterfaces.ITypedRequest>(
    methodName: T['method'],
    targetConnection?: plugins.smartsocket.SocketConnection
  ): plugins.typedrequest.TypedRequest<T> {
    const typedrequest = new plugins.typedrequest.TypedRequest<T>(
      new plugins.typedrequest.TypedTarget({
        postMethod: async (requestDataArg) => {
          const result = await this.postMethod(requestDataArg, targetConnection);
          return result;
        },
      }),
      methodName
    );
    return typedrequest;
  }

  /**
   * returns all matching target connection
   * @param asyncFindFuncArg
   * @returns
   */
  public async findAllTargetConnections(
    asyncFindFuncArg: (connectionArg: plugins.smartsocket.SocketConnection) => Promise<boolean>
  ) {
    if (this.socketServerOrClient instanceof plugins.smartsocket.Smartsocket) {
      const matchingSockets: plugins.smartsocket.SocketConnection[] = [];
      for (const socketConnection of this.socketServerOrClient.socketConnections.getArray()) {
        if (await asyncFindFuncArg(socketConnection)) {
          matchingSockets.push(socketConnection);
        }
      }
      return matchingSockets;
    } else {
      throw new Error('this method >>findTargetConnection<< is only available from the server');
    }
  }

  /**
   * returns a single target connection by returning the first one of all matching ones
   * @param asyncFindFuncArg
   * @returns
   */
  public async findTargetConnection(
    asyncFindFuncArg: (connectionArg: plugins.smartsocket.SocketConnection) => Promise<boolean>
  ) {
    const allMatching = await this.findAllTargetConnections(asyncFindFuncArg);
    return allMatching[0];
  }

  public async findAllTargetConnectionsByTag<
    TTag extends plugins.typedrequestInterfaces.ITag = any
  >(keyArg: TTag['name'], payloadArg?: TTag['payload']) {
    return this.findAllTargetConnections(async (socketConnectionArg) => {
      let result: boolean;
      if (!payloadArg) {
        result = !!(await socketConnectionArg.getTagById(keyArg));
      } else {
        result = !!(
          plugins.smartjson.stringify((await socketConnectionArg.getTagById(keyArg))?.payload) ===
          plugins.smartjson.stringify(payloadArg)
        );
      }
      return result;
    });
  }

  public async findTargetConnectionByTag<TTag extends plugins.typedrequestInterfaces.ITag = any>(
    keyArg: TTag['name'],
    payloadArg?: TTag['payload']
  ) {
    const allResults = await this.findAllTargetConnectionsByTag(keyArg, payloadArg);
    return allResults[0];
  }

  public async stop() {
    await this.socketServerOrClient.stop();
  }
}