<key>NSMicrophoneUsageDescription</key>
<string>For making voice requests</string>
<key>NSSpeechRecognitionUsageDescription</key>
<string>For understanding your voice requests</string>

do {
    let session = AVAudioSession.sharedInstance()
    try? session.setCategory(.playAndRecord, options: [.defaultToSpeaker, .allowAirPlay, .allowBluetoothA2DP, .allowBluetooth])
    try? session.setActive(true, options: [])
}

import SpokestackTray
import Spokestack

override func viewDidLoad() {

    super.viewDidLoad()

    let configuration: TrayConfiguration = TrayConfiguration()

    /// When the tray is opened for the first time this is the synthesized
    /// greeting that will be "said" to the user

    configuration.greeting = """
    Welcome! This example finds tutorials for Minecraft crafting. Try saying, \"How do I make a castle?\"
    """

    /// When the tray is listening or processing speech there is a animated gradient that
    /// sits on top of the tray. The default values are red, white and blue

    configuration.gradientColors = [
        "#61fae9".spstk_color,
        "#2F5BEA".spstk_color,
        UIColor.systemRed
    ]

    /// Apart of the initialization of the tray is to download the nlu and wake word models.
    /// These are the default Spokestack models, but you can replace with your own

    configuration.nluModelURLs = [
        NLUModelURLMetaDataKey: "https://d3dmqd7cy685il.cloudfront.net/nlu/production/shared/XtASJqxkO6UwefOzia-he2gnIMcBnR2UCF-VyaIy-OI/nlu.tflite",
        NLUModelURLNLUKey: "https://d3dmqd7cy685il.cloudfront.net/nlu/production/shared/XtASJqxkO6UwefOzia-he2gnIMcBnR2UCF-VyaIy-OI/vocab.txt",
        NLUModelURLVocabKey: "https://d3dmqd7cy685il.cloudfront.net/nlu/production/shared/XtASJqxkO6UwefOzia-he2gnIMcBnR2UCF-VyaIy-OI/metadata.json"
    ]
    configuration.wakewordModelURLs = [
        WakeWordModelDetectKey: "https://d3dmqd7cy685il.cloudfront.net/model/wake/spokestack/detect.tflite",
        WakeWordModelEncodeKey: "https://d3dmqd7cy685il.cloudfront.net/model/wake/spokestack/encode.tflite",
        WakeWordModelFilterKey: "https://d3dmqd7cy685il.cloudfront.net/model/wake/spokestack/filter.tflite"
    ]

    configuration.cliendId = "YOUR_CLIENT_ID"
    configuration.clientSecret = "YOUR_CLIENT_SECRET"

    /// The handleIntent callback is how the SpeechController and the TrayViewModel know if
    /// NLUResult should be processed and what text should be added to the tableView.

    let greeting: IntentResult = IntentResult(node: InterntResultNode.greeting.rawValue, prompt: configuration.greeting)
    var lastNode: IntentResult = greeting

    configuration.handleIntent = {intent, slots, utterance in
        switch intent {
            case IntentResultAmazonType.repeat.rawValue:
                return lastNode
            case IntentResultAmazonType.yes.rawValue:
                lastNode = IntentResult(node: InterntResultNode.search.rawValue, prompt: "I heard you say yes! What would you like to make?")
            case IntentResultAmazonType.no.rawValue:
                lastNode = IntentResult(node: InterntResultNode.exit.rawValue, prompt: "I heard you say no. Goodbye")
            case IntentResultAmazonType.stop.rawValue,
                    IntentResultAmazonType.cancel.rawValue,
                    IntentResultAmazonType.fallback.rawValue:
                lastNode = IntentResult(node: InterntResultNode.exit.rawValue, prompt: "Goodbye!")
            case IntentResultAmazonType.recipe.rawValue:

                if let whatToMakeSlot: Dictionary<String, Slot> = slots,
                    let slot: Slot = whatToMakeSlot["Item"],
                    let item: String = slot.value as? String {

                    lastNode = IntentResult(node: InterntResultNode.recipe.rawValue,
                                            prompt: """
                                            If I were a real app, I would show a screen now on how to make a \(item). Want to continue?
                                            """
                                )
                }

            case IntentResultAmazonType.help.rawValue:
                lastNode = greeting
            default:
                lastNode = greeting
        }

        return lastNode
    }

    /// Which NLUNodes should trigger the tray to close automatically

    configuration.exitNodes = [
        InterntResultNode.exit.rawValue
    ]

    /// Callback when the tray is opened. The call back is called _after_ the animation has finished

    configuration.onOpen = {
        LogController.shared.log("isOpen")
    }

    /// Callback when the tray is closed. The call back is called _after_ the animation has finished

    configuration.onClose = {
        LogController.shared.log("onClose")
    }

    /// Callback when a `TrayListenerType` has occured

    configuration.onEvent = {event in
        LogController.shared.log("onEvent \(event)")
    }

    let tray: SpokestackTrayViewController = SpokestackTrayViewController(self, configuration: configuration)
    tray.addToParentView()
    tray.listen()
}

configuration.handleIntent = {intent, slots, utterance in

    if intent == "search" {
        let results = searchService.search(slots.ingrident)
        viewModel.addSearchResults(results)

        // Return a response
        return {
            prompt: "Here are your search results.",
            node: "search_results"
        }
    }
}