/*
 * Copyright 2020 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import Foundation
import FirebaseAuth
import GTMSessionFetcher
import XCTest

// TODO(#10752) - Update and fix the Facebook login Sample app and tests.
//
// class FacebookTests: TestsBase {
//  func testSignInWithFacebook() throws {
//    let auth = Auth.auth()
//    let userInfoDict = createFacebookTestingAccount()
//    let facebookAccessToken: String = try XCTUnwrap(userInfoDict["access_token"] as? String)
//    let facebookAccountID: String = try XCTUnwrap(userInfoDict["id"] as? String)
//    let credential = FacebookAuthProvider.credential(withAccessToken: facebookAccessToken)
//    let expectation = self.expectation(description: "Signing in with Facebook finished.")
//    auth.signIn(with: credential) { result, error in
//      if let error = error {
//        XCTFail("Signing in with Facebook had error: \(error)")
//      } else {
//        XCTAssertEqual(auth.currentUser?.displayName, Credentials.kFacebookUserName)
//      }
//      expectation.fulfill()
//    }
//    waitForExpectations(timeout: TestsBase.kExpectationsTimeout)
//
//    // Clean up the created Firebase/Facebook user for future runs.
//    deleteCurrentUser()
//    deleteFacebookTestingAccountbyID(facebookAccountID)
//  }
//
//  #if compiler(>=5.5.2) && canImport(_Concurrency)
//    @available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
//    func testSignInWithFacebookAsync() async throws {
//      let auth = Auth.auth()
//      let userInfoDict = try await createFacebookTestingAccountAsync()
//      let facebookAccessToken: String = try XCTUnwrap(userInfoDict["access_token"] as? String)
//      let facebookAccountID: String = try XCTUnwrap(userInfoDict["id"] as? String)
//      let credential = FacebookAuthProvider.credential(withAccessToken: facebookAccessToken)
//
//      try await auth.signIn(with: credential)
//      XCTAssertEqual(auth.currentUser?.displayName, Credentials.kFacebookUserName)
//
//      // Clean up the created Firebase/Facebook user for future runs.
//      try await deleteCurrentUserAsync()
//      try await deleteFacebookTestingAccountbyIDAsync(facebookAccountID)
//    }
//  #endif
//
//  func testLinkAnonymousAccountToFacebookAccount() throws {
//    let auth = Auth.auth()
//    signInAnonymously()
//    let userInfoDict = createFacebookTestingAccount()
//    let facebookAccessToken: String = try XCTUnwrap(userInfoDict["access_token"] as? String)
//    let facebookAccountID: String = try XCTUnwrap(userInfoDict["id"] as? String)
//    let credential = FacebookAuthProvider.credential(withAccessToken: facebookAccessToken)
//    let expectation = self.expectation(description: "Facebook linking finished.")
//    auth.currentUser?.link(with: credential, completion: { result, error in
//      if let error = error {
//        XCTFail("Link to Firebase error: \(error)")
//      } else {
//        guard let providers = (auth.currentUser?.providerData) else {
//          XCTFail("Failed to get providers")
//          return
//        }
//        XCTAssertEqual(providers.count, 1)
//        XCTAssertEqual(providers[0].providerID, "facebook.com")
//      }
//      expectation.fulfill()
//    })
//    waitForExpectations(timeout: TestsBase.kExpectationsTimeout)
//
//    // Clean up the created Firebase/Facebook user for future runs.
//    deleteCurrentUser()
//    deleteFacebookTestingAccountbyID(facebookAccountID)
//  }
//
//  #if compiler(>=5.5.2) && canImport(_Concurrency)
//    @available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
//    func testLinkAnonymousAccountToFacebookAccountAsync() async throws {
//      let auth = Auth.auth()
//      try await signInAnonymouslyAsync()
//      let userInfoDict = try await createFacebookTestingAccountAsync()
//      let facebookAccessToken: String = try XCTUnwrap(userInfoDict["access_token"] as? String)
//      let facebookAccountID: String = try XCTUnwrap(userInfoDict["id"] as? String)
//      let credential = FacebookAuthProvider.credential(withAccessToken: facebookAccessToken)
//      try await auth.currentUser?.link(with: credential)
//      guard let providers = (auth.currentUser?.providerData) else {
//        XCTFail("Failed to get providers")
//        return
//      }
//      XCTAssertEqual(providers.count, 1)
//      XCTAssertEqual(providers[0].providerID, "facebook.com")
//
//      // Clean up the created Firebase/Facebook user for future runs.
//      try await deleteCurrentUserAsync()
//      try await deleteFacebookTestingAccountbyIDAsync(facebookAccountID)
//    }
//  #endif
//
//  /// Creates a Facebook testing account using Facebook Graph API and return a dictionary that
//  /// constrains "id", "access_token", "login_url", "email" and "password" of the created account.
//  func createFacebookTestingAccount() -> [String: Any] {
//    var returnValue: [String: Any] = [:]
//    let urltoCreateTestUser = "https://graph.facebook.com/\(Credentials.kFacebookAppID)" +
//      "/accounts/test-users"
//    let bodyString = "installed=true&name=\(Credentials.kFacebookUserName)" +
//      "&permissions=read_stream&access_token=\(Credentials.kFacebookAppAccessToken)"
//    let postData = bodyString.data(using: .utf8)
//    let service = GTMSessionFetcherService()
//    let fetcher = service.fetcher(withURLString: urltoCreateTestUser)
//    fetcher.bodyData = postData
//    fetcher.setRequestValue("text/plain", forHTTPHeaderField: "Content-Type")
//    let expectation = self.expectation(description: "Creating Facebook account finished.")
//    fetcher.beginFetch { data, error in
//      if let error = error {
//        let error = error as NSError
//        if let message = String(data: error.userInfo["data"] as! Data, encoding: .utf8) {
//          // May get transient errors here for too many api calls when tests run frequently.
//          XCTFail("Creating Facebook account failed with error: \(message)")
//        } else {
//          XCTFail("Creating Facebook account failed with error: \(error)")
//        }
//      } else {
//        do {
//          let data = try XCTUnwrap(data)
//          returnValue = try JSONSerialization.jsonObject(with: data, options: [])
//            as! [String: Any]
//        } catch {
//          XCTFail("Failed to unwrap data \(error)")
//        }
//      }
//      expectation.fulfill()
//    }
//    waitForExpectations(timeout: TestsBase.kExpectationsTimeout)
//    return returnValue
//  }
//
//  #if compiler(>=5.5.2) && canImport(_Concurrency)
//    @available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
//    /// Creates a Facebook testing account using Facebook Graph API and return a dictionary that
//    /// constains "id", "access_token", "login_url", "email" and "password" of the created
//    /// account.
//    func createFacebookTestingAccountAsync() async throws -> [String: Any] {
//      let urltoCreateTestUser = "https://graph.facebook.com/\(Credentials.kFacebookAppID)" +
//        "/accounts/test-users"
//      let bodyString = "installed=true&name=\(Credentials.kFacebookUserName)" +
//        "&permissions=read_stream&access_token=\(Credentials.kFacebookAppAccessToken)"
//      let postData = bodyString.data(using: .utf8)
//      let service = GTMSessionFetcherService()
//      let fetcher = service.fetcher(withURLString: urltoCreateTestUser)
//      fetcher.bodyData = postData
//      fetcher.setRequestValue("text/plain", forHTTPHeaderField: "Content-Type")
//      let data = try await fetcher.beginFetch()
//      guard let returnValue = try JSONSerialization.jsonObject(with: data, options: [])
//        as? [String: Any] else {
//        XCTFail("Failed to serialize userInfo as a Dictionary")
//        fatalError()
//      }
//      return returnValue
//    }
//  #endif
//
//  // ** Delete a Facebook testing account by account Id using Facebook Graph API. */
//  func deleteFacebookTestingAccountbyID(_ accountID: String) {
//    let urltoDeleteTestUser = "https://graph.facebook.com/\(accountID)"
//    let bodyString = "method=delete&access_token=\(Credentials.kFacebookAppAccessToken)"
//    let postData = bodyString.data(using: .utf8)
//    let service = GTMSessionFetcherService()
//    let fetcher = service.fetcher(withURLString: urltoDeleteTestUser)
//    fetcher.bodyData = postData
//    fetcher.setRequestValue("text/plain", forHTTPHeaderField: "Content-Type")
//    let expectation = self.expectation(description: "Deleting Facebook account finished.")
//    fetcher.beginFetch { data, error in
//      if let error = error {
//        XCTFail("Deleting Facebook account failed with error: \(error)")
//      }
//      expectation.fulfill()
//    }
//    waitForExpectations(timeout: TestsBase.kExpectationsTimeout)
//  }
//
//  #if compiler(>=5.5.2) && canImport(_Concurrency)
//    @available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
//    // ** Delete a Facebook testing account by account Id using Facebook Graph API. */
//    func deleteFacebookTestingAccountbyIDAsync(_ accountID: String) async throws {
//      let urltoDeleteTestUser = "https://graph.facebook.com/\(accountID)"
//      let bodyString = "method=delete&access_token=\(Credentials.kFacebookAppAccessToken)"
//      let postData = bodyString.data(using: .utf8)
//      let service = GTMSessionFetcherService()
//      let fetcher = service.fetcher(withURLString: urltoDeleteTestUser)
//      fetcher.bodyData = postData
//      fetcher.setRequestValue("text/plain", forHTTPHeaderField: "Content-Type")
//      try await fetcher.beginFetch()
//    }
//  #endif
// }