> For the complete documentation index, see [llms.txt](https://docs.abtasty.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.abtasty.com/server-side/integrations/open-feature/open-feature-js-1/open-feature-js-quick-start.md).

# Quick-start

### Installation

Refer to the [installation](/server-side/integrations/open-feature/open-feature-js-1/open-feature-js-installation.md) page for installation steps.

### Getting started

Below is a simple example that describes the instantiation of the ABTasty Provider. Please see the [OpenFeature Documentation](https://docs.openfeature.dev/docs/reference/concepts/evaluation-api) for details on how to use the OpenFeature SDK.

#### Add the following to your Package.swift:

```swift
dependencies: [
    .package(url: "https://github.com/flagship-io/openfeature-provider-iOS.git", from: "1.0.0")
]
```

Import the required modules:

```swift
import ABTastyOpenfeature_iOS
import OpenFeature
```

#### Register the ABTastyProvider with OpenFeature

`Init` and `Set` provider with `context`

{% hint style="info" %}
In the context use the **targetingKey** for the visitorId and you should mention **hasConsented through the context**
{% endhint %}

```swift
 
 // Create a context with an "openUserId"
 let ctx = MutableContext(
            targetingKey: "openUserId",
            structure: MutableStructure(attributes: ["isQA": Value.boolean(true),
                                                     "city": Value.string("FR"),
                                                     "hasConsented": Value.boolean(true),
                                                     "ctx1": Value.boolean(false),
                                                     "ctx2": Value.integer(125),
                                                     "ctx3": Value.double(12.0)])
                                                     
Task {
    // Create ABTasty provider
   let provider = ABTastyProvider(envId: "envId", apiKey: "apiKey", configurator: FSConfigBuilder().build())
   // Set provider through OpenFeature API
   await OpenFeatureAPI.shared.setProviderAndWait(provider: provider, initialContext: ctx)
}
```

### Flag Evaluation (Read Flag)

After `init` and `set` provider with the apropriate `context` use the client instance to get the evaluation flag

```swift
// Update UIs on the main thread
DispatchQueue.main.async {
 // get a bool flag value
 let client = OpenFeatureAPI.shared.getClient()
 // Retreive the String flag for 'btnTitle'key
 let btnTitle = client.getStringValue(key: "btnTitle", defaultValue: "default")
 // Retreive the Integer flag for 'intValue'key
 let intValue = client.getIntegerValue(key: "intValue", defaultValue: 0)
 // Update UIs
}
```

### Context Updates

On visitor context changed use `setEvaluationContextAndWait` function before read flag value

```swift
 // New context to inject 
  let updatedContext = MutableContext(
            targetingKey: "openUserId",
            structure: MutableStructure(attributes: ["isQA": Value.boolean(false)]))
  Task {
        await OpenFeatureAPI.shared.setEvaluationContextAndWait(evaluationContext: updatedContext)
        // Refresh the values after context update
            DispatchQueue.main.async {
                let client = OpenFeatureAPI.shared.getClient()
                // get String value for 'btnTitle' key flag
                let btnTitle = client.getStringValue(key: "btnTitle", defaultValue: "default")
                // get Integer value for 'intValue' key flag
                let intValue = client.getIntegerValue(key: "intValue", defaultValue: 0)
                // Update UIs
        }
    }

```


---

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