Binding the view model in Breather.

BindingTheViewModelInBreather.swift

// MARK: - Private Properties

private let refreshSubject = PublishSubject<Void>()
private let disposeBag = DisposeBag()

// MARK: - Methods

private func bindViewModel() {
    // Inputs
    refreshSubject
        .subscribe(viewModel.input.viewDidRefresh)
        .disposed(by: disposeBag)
    aqiStandardSegmentedControl.rx.selectedSegmentIndex
        .subscribe(viewModel.input.aqiStandard)
        .disposed(by: disposeBag)
    // Outputs
    viewModel.output.city.drive(cityLabel.rx.text).disposed(by: disposeBag)
    viewModel.output.weatherImage.drive(weatherImageView.rx.image).disposed(by: disposeBag)
    viewModel.output.temperature.drive(temperatureLabel.rx.text).disposed(by: disposeBag)
    viewModel.output.temperatureColour.drive(onNext: { [unowned self] color in
        self.temperatureLabel.textColor = color
    }).disposed(by: disposeBag)
    viewModel.output.humidity.drive(humidityLabel.rx.text).disposed(by: disposeBag)
    viewModel.output.pressure.drive(pressureLabel.rx.text).disposed(by: disposeBag)
    viewModel.output.windSpeed.drive(windLabel.rx.text).disposed(by: disposeBag)
    viewModel.output.windDirection.drive(onNext: { [unowned self] direction in
        self.windDirectionImageView.transform = CGAffineTransform(rotationAngle: direction)
    }).disposed(by: disposeBag)
    viewModel.output.airQuality.drive(airQualityLabel.rx.text).disposed(by: disposeBag)
    viewModel.output.airQualityColour.drive(onNext: { [unowned self] color in
        self.airQualityLabel.textColor = color
    }).disposed(by: disposeBag)
    viewModel.output.aqi.drive(aqiLabel.rx.text).disposed(by: disposeBag)
    viewModel.output.mainPollutant.drive(onNext: { [unowned self] text in
        self.mainPollutantLabel.setAttributedTextWithSubscripts(
            text: text, 
            indicesOfSubscripts: text.indicesOfNumbers)
    }).disposed(by: disposeBag)
    viewModel.output.asthmaRisk.drive(asthmaRiskLabel.rx.text).disposed(by: disposeBag)
    viewModel.output.asthmaRiskColour.drive(onNext: { [unowned self] color in
        self.asthmaRiskLabel.textColor = color
    }).disposed(by: disposeBag)
    viewModel.output.asthmaProbability.drive(asthmaProbabilityLabel.rx.text).disposed(by: disposeBag)
}

@objc private func refresh() {
    refreshSubject.onNext(())
}