e-book

web3-provider.effects.ts

getAccountInfo$ = createEffect(() =>
    this.actions$.pipe(
      ofType(Web3ProviderActions.metamaskConnectSuccess),
      switchMap(() => {
        return [Web3ProviderActions.getNetwork(), Web3ProviderActions.getAddress(), Web3ProviderActions.getBalance()];
      })
    )
  );

  getAddress$ = createEffect(() =>
    this.actions$.pipe(
      ofType(Web3ProviderActions.getAddress),
      switchMap(() =>
        this.providerSrv.getSelectedAddress().pipe(
          map((address: string) => Web3ProviderActions.addressSuccess({ address })),
          catchError((err: Error) => of(this.handleError(err)))
        )
      )
    )
  );

  getBalance$ = createEffect(() =>
    this.actions$.pipe(
      ofType(Web3ProviderActions.getBalance),
      switchMap(() =>
        this.providerSrv.getBalance().pipe(
          map((balance: string) =>
            Web3ProviderActions.balanceSuccess({ balance })
          ),
          catchError((err: Error) => of(this.handleError(err)))
        )
      )
    )
  );

  getNetwork$ = createEffect(() =>
    this.actions$.pipe(
      ofType(Web3ProviderActions.getNetwork),
      switchMap(() =>
        this.providerSrv.getNetwork().pipe(
          map((network: string) =>
            Web3ProviderActions.networkSuccess({ network })
          ),
          catchError((err: Error) => of(this.handleError(err)))
        )
      )
    )
  );