import Commercetools

// Default configuration initializer reads from CommercetoolsConfig.plist file from your app bundle
if let configuration = Config() {
    
    // You can also specify custom logging level
    // configuration.logLevel = .error
    
    // Or completely disable all log messages from Commercetools SDK
    // configuration.loggingEnabled = false
    
    // Finally, you need set your configuration before using the SDK
    Commercetools.config = configuration
    
} else {
    // There are some errors in your .plist file, check log messages for more information
}

let username = "[email protected]"
let password = "password"

Commercetools.loginCustomer(username, password: password, completionHandler: { result in
    if let error = result.errors?.first as? CTError, case .accessTokenRetrievalFailed(let reason) = error {
        // Handle error, and possibly get some more information from reason.message
    }
})

Commercetools.logoutCustomer()

if Commercetools.authState == .plainToken {
    // Present login form or other logic
}

Commercetools.obtainAnonymousToken(usingSession: true, anonymousId: "some-custom-id", completionHandler: { error in
    if error == nil {
        // It is possible for token retrieval to fail, e.g custom token ID has already been taken,
        // in which case reason.message from the returned CTError instance is set to the anonymousId is already in use.
    }
})

let username = "[email protected]"
let password = "password"

Commercetools.loginCustomer(username, password: password, storeKey: "store-key", completionHandler: { result in
    if let error = result.errors?.first as? CTError {
        // Handle error, and possibly get some more information from reason.message
    }
})

NotificationCenter.default.addObserver(self, selector: #selector(checkAuthState), name: Notification.Name.WatchSynchronization.DidReceiveTokens, object: nil)

func checkAuthState() {
    if Commercetools.authState == .customerToken {
        // The customer is logged in, present the appropriate screen
    } else {
        // The customer is not logged in, present the login message if needed 
    }
}

var cartDraft = CartDraft(currency: "EUR")

Cart.create(cartDraft, result: { result in
	if let cart = result.model, result.isSuccess {
		// Do any work with created `Cart` instance, i.e:
		if cart.cartState == .active {
			// Our cart is active!
		}
	}
})

Project.settings { result in
    if let settings = result.model {
        // use settings.currencies, settings.countries, settings.languages, etc
    }
}

Cart.active(result: { result in
    if let cart = result.model, result.isSuccess {
        // Cart successfully retrieved, response contains currently active cart
    } else {
        // Your user might not have an active cart at the moment
    }
})

Cart.query(limit: 2, offset: 1, result: { result in
    if let response = result.model, let count = response.count,
            let results = response.results, result.isSuccess {
        // response contains an array of cart instances
    }
})

var cartDraft = CartDraft()
cartDraft.currency = "EUR"

Cart.create(cartDraft, result: { result in
    if let cart = result.model, let cartState = cart.cartState, result.isSuccess {
        // Cart successfully created, and cart contains 
    }
})

let draft = LineItemDraft(productVariantSelection: .productVariant(productId: productId, variantId: variantId))

let updateActions = UpdateActions<CartUpdateAction>(version: version, actions: [.addLineItem(lineItemDraft: draft)])
Cart.update(cartId, actions: updateActions, result: { result in
    if let cart = result.model, result.isSuccess {
        // Cart successfully updated, response contains updated cart
    }
})

let version = 1 // Set the appropriate current version

Cart.delete(cartId, version: version, result: { result in
    if let cart = result.model, result.isSuccess {
        // Cart successfully deleted
    }
})

Cart.byId("cddddddd-ffff-4b44-b5b0-004e7d4bc2dd", result: { result in
    if let cart = result.model, cart.cartState == .active && result.isSuccess {
        // response contains cart dictionary
    }
})

Category.query(limit: 10, offset: 1, result: { result in
    if let response = result.model, let count = response.count,
            let categories = response.results, result.isSuccess {
        // categories contains an array of category objects
    }
})

Category.byId("cddddddd-ffff-4b44-b5b0-004e7d4bc2dd", result: { result in
    if let category = result.model, result.isSuccess {
        // response contains category objects
    }
})

// Optionally set `storeKey` for customers registered in a specific store.
Customer.profile { result in
    if let profile = result.model, let firstName = profile.firstName,
            let lastName = profile.lastName, result.isSuccess {
        // E.g present user profile details
    }
}

var customerDraft = CustomerDraft()
customerDraft.email = "[email protected]"
customerDraft.password = "password"

// Optionally set `storeKey` to sign up the customer in that store.
Commercetools.signUpCustomer(customerDraft, result: { result in
    if let customer = result.model?.customer, let version = customer.version, result.isSuccess {
        // User has been successfully signed up.
        // Now, you'd probably want to present the login form, or simply
        // use AuthManager to login user automatically
    }
})

var options = SetFirstNameOptions()
options.firstName = "newName"

let updateActions = UpdateActions<CustomerUpdateAction>(version: version, actions: [.setFirstName(options: options)])
// Optionally set `storeKey` for customers registered in a specific store.
Customer.update(actions: updateActions, result: { result in
    if let customer = result.model, let version = customer.version, result.isSuccess {
    	// User profile successfully updated
    }
})

// Optionally set `storeKey` for customers registered in a specific store.
Customer.delete(version: version, result: { result in
    if let customer = result.model, result.isSuccess {
        // Customer was successfully deleted
    }
})

let  version = 1 // Set the appropriate current version

// Optionally set `storeKey` for customers registered in a specific store.
Customer.changePassword(currentPassword: "password", newPassword: "newPassword", version: version, result: { result in
    if let customer = result.model, result.isSuccess {
    	// Password has been changed, and now AuthManager has automatically obtained new access token
    }
})

let token = "" // Usually this token is retrieved from the password reset link, in case your app does support universal links

// Optionally set `storeKey` for customers registered in a specific store.
Customer.resetPassword(token: token, newPassword: "password", result: { result in
    if let customer = result.model, let email = customer.email, result.isSuccess {
        // Password has been successfully reset, now would be a good time to present the login screen
    }
})

let token = "" // Usually this token is retrieved from the activation link, in case your app does support universal links

// Optionally set `storeKey` for customers registered in a specific store.
Customer.verifyEmail(token: token, result: { result in
    if let customer = result.model, let email = customer.email, result.isSuccess {
        // Email has been successfully verified, probably show UIAlertController with this info
    }
})

ShippingMethod.for(cart: cart) { result in
    if let shippingMethods = result.model, result.isSuccess {
        // present shipping methods to the customer
    }
}

ShippingMethod.for(country: "DE") { result in
    if let shippingMethods = result.model, result.isSuccess {
        // present shipping methods to the customer
    }
}

let predicate = "name=\"DHL\""

ShippingMethod.query(predicates: [predicate], result: { result in
    if let response = result.model, let count = response.count,
			let results = response.results, result.isSuccess {
        // results contains an array of shipping method objects
    }
})

ShippingMethod.byId("cddddddd-ffff-4b44-b5b0-004e7d4bc2dd", result: { result in
    if let shippingMethod = result.model, result.isSuccess {
        // response contains product projection object
    }
})

ProductProjection.search(sort: ["name.en asc"], limit: 10, lang: Locale(identifier: "en"), text: "Michael Kors", result: { result in
    if let response = result.model, let total = response.total,
    		let results = response.results, result.isSuccess {
        // results contains an array of product projection objects
    }
})

ProductProjection.suggest(lang: Locale(identifier: "en"), searchKeywords: "michael", result: { result in
    if let response = result.json, let keywords = response["searchKeywords.en"] as? [[String: AnyObject]],
    		let firstKeyword = keywords.first?["text"] as? String, result.isSuccess {
        // keywords contains an array of suggestions in dictionary representation
    }
})

let predicate = "slug(en=\"michael-kors-bag-30T3GTVT7L-lightbrown\")"

ProductProjection.query(predicates: [predicate], sort: ["name.en asc"], limit: 10, offset: 10, result: { result in
    if let response = result.model, let count = response.count,
			let results = response.results, result.isSuccess {
        // results contains an array of product projection objects
    }
})

ProductProjection.byId("cddddddd-ffff-4b44-b5b0-004e7d4bc2dd", result: { result in
    if let product = result.model, result.isSuccess {
        // response contains product projection object
    }
})

ProductType.query(limit: 10, offset: 1, result: { result in
    if let response = result.model, let count = response.count,
            let productTypes = response.results, result.isSuccess {
        // productTypes contains an array of product type objects
    }
})

ProductType.byId("cddddddd-ffff-4b44-b5b0-004e7d4bc2dd", result: { result in
    if let productType = result.model, result.isSuccess {
        // response contains product type object
    }
})

ProductType.byKey("main", result: { result in
    if let productType = result.model, result.isSuccess {
        // response contains product type object
    }
})

Store.query(limit: 10, offset: 1, result: { result in
    if let response = result.model, let count = response.count,
            let stores = response.results, result.isSuccess {
        // stores contains an array of store objects
    }
})

Store.byId("cddddddd-ffff-4b44-b5b0-004e7d4bc2dd", result: { result in
    if let store = result.model, result.isSuccess {
        // response contains store object
    }
})

Store.byKey("unionSquare", result: { result in
    if let store = result.model, result.isSuccess {
        // response contains store object
    }
})

let request = SimilarProductSearchRequest(limit: 10, similarityMeasures: SimilarityMeasures(name: 1))

SimilarProducts.initiateSearch(request: request) { result in
    if let taskToken = result.model {
        // use taskToken.taskId to monitor for progress
    }
}

SimilarProducts.status(for: taskToken.taskId) { result in
    if let taskStatus = result.model, taskStatus == .success {
        // task has been completed, use taskStatus.result to get the products from `PagedQueryResult`
    }
}

CategoryRecommendations.query(productId: product.id) { result in
    if let results = result.model?.results {
        // results contains an array of `ProjectCategoryRecommendation`s
    }
}

private class Foobar: QueryEndpoint, ByIdEndpoint, CreateEndpoint, UpdateEndpoint, DeleteEndpoint {
    static let path = "foobar"
}