//
//  KeymanEngineTests.swift
//  KeymanEngineTests
//
//  Created by Joshua Horton on 2020-02-19.
//  Copyright © 2020 SIL International. All rights reserved.
//

import XCTest

@testable import KeymanEngine
import DeviceKit


class FileManagementTests: XCTestCase {
  override func setUp() {
    TestUtils.setupAndDeinitManager()
  }
  
  override func tearDown() {
    TestUtils.standardTearDown()
  }

  func testKeyboardInstallation() {
    ResourceFileManager.shared.prepareKMPInstall(from: TestUtils.Keyboards.khmerAngkorKMP) { kmp, error in
      XCTAssertNotNil(kmp, "Failed to prepare KMP for installation")
      XCTAssertNil(error, "Error occurred while preparing KMP for installation")
      XCTAssertNotNil(kmp as? KeyboardKeymanPackage, "KMP resource type improperly recognized - expected a keyboard package!")

      ResourceFileManager.shared.finalizePackageInstall(kmp!, isCustom: true) { innerError in
        XCTAssertNil(innerError, "Error occurred while finalizing KMP installation")

        let installURL = Storage.active.keyboardURL(forID: "khmer_angkor", version: "1.0.6")

        XCTAssertTrue(FileManager.default.fileExists(atPath: installURL.path),
                      "Could not find installed keyboard file")

        let keyboards = Storage.active.userDefaults.userKeyboards!

        XCTAssertEqual(keyboards.count, 1, "Unexpected number of keyboards were installed")
        XCTAssertEqual(keyboards[0].id, "khmer_angkor", "Installed keyboard ID mismatch")

        let fontURL = Storage.active.fontURL(forKeyboardID: "khmer_angkor", filename: "Mondulkiri-R.ttf")
        XCTAssertTrue(FileManager.default.fileExists(atPath: fontURL.path))
      }
    }
  }

  func testLexicalModelInstallation() {
    ResourceFileManager.shared.prepareKMPInstall(from: TestUtils.LexicalModels.mtntKMP) { kmp, error in
      XCTAssertNotNil(kmp, "Failed to prepare KMP for installation")
      XCTAssertNil(error, "Error occurred while preparing KMP for installation")
      XCTAssertNotNil(kmp as? LexicalModelKeymanPackage, "KMP resource type improperly recognized - expected a lexical model package!")

      ResourceFileManager.shared.finalizePackageInstall(kmp!, isCustom: true) { innerError in
        XCTAssertNil(innerError, "Error occurred while finalizing KMP installation")

        let installURL = Storage.active.lexicalModelURL(forID: "nrc.en.mtnt", version: "0.1.4")

        XCTAssertTrue(FileManager.default.fileExists(atPath: installURL.path),
                      "Could not find installed lexical model file")

        let models = Storage.active.userDefaults.userLexicalModels!

        // Yep, the model auto-installs for all language ids, even when there's no matching keyboard.
        // That's the current state of affairs in Keyman Engine for iOS.
        XCTAssertEqual(models.count, 3, "Unexpected number of models were installed")
        XCTAssertEqual(models[0].id, "nrc.en.mtnt", "Installed lexical model ID mismatch")
      }
    }
  }
}