//
// Copyright © 2024 Salar Rahmanian.
//
// 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 Testing

@testable import Fishee

@Suite(.serialized)
final class ParserTests {
  let fishHistoryFile = Bundle.module.path(forResource: "fish_history_test", ofType: "txt")
  let historyItem = FishHistoryEntry(
    cmd: "cd Projects/Fishee/", when: 1_727_545_693, paths: ["Projects/Fishee/"])
  let historyItem2 = FishHistoryEntry(
    cmd: "swift package tools-version", when: 1_727_545_709, paths: [])
  let filePathforWriteTest = FileManager.default.temporaryDirectory.appendingPathComponent(
    "myfile.txt")
  let filePathforFileBackupTest = FileManager.default.temporaryDirectory
    .appendingPathComponent("myfile_copy.txt")

  deinit {
    if FileManager.default.fileExists(atPath: filePathforWriteTest.path) {
      _ = try? FileManager.default.removeItem(at: filePathforWriteTest)
    }
    if FileManager.default.fileExists(atPath: filePathforFileBackupTest.path) {
      _ = try? FileManager.default.removeItem(at: filePathforFileBackupTest)
    }
  }

  @Test func parseFishHistoryTest() {
    #expect(fishHistoryFile != nil)
    let fishHistory = parseFishHistory(from: fishHistoryFile!)
    #expect(fishHistory!.count > 0)
    let expectedHistory = [historyItem, historyItem2]
    #expect(fishHistory == expectedHistory)
  }

  @Test func writeFishHistoryTest() {
    let written = writeFishHistory(
      to: filePathforWriteTest.path,
      history: [historyItem],
      backup: false
    )
    #expect(written)

    let fileContent = try? String(contentsOf: filePathforWriteTest, encoding: .utf8)
    let expectedEntry = """
      - cmd: cd Projects/Fishee/
        when: 1727545693
        paths:
          - Projects/Fishee/

      """
    #expect(fileContent == expectedEntry)

    // confirm backup functionality is working
    #expect(FileManager.default.fileExists(atPath: filePathforWriteTest.path))

    let write_again = writeFishHistory(
      to: filePathforWriteTest.path,
      history: [historyItem],
      backup: true
    )
    #expect(write_again)
    #expect(FileManager.default.fileExists(atPath: filePathforFileBackupTest.path))
  }

  @Test func mergeFishHistoryTest() {
    let merged = mergeFishHistory([historyItem], [historyItem2])
    #expect(merged.count == 2)
    #expect(merged.contains(historyItem))
    #expect(merged.contains(historyItem2))
  }

  @Test func mergeFishHistoryWithDuplicateTest() {
    let merged = mergeFishHistory([historyItem], [historyItem, historyItem2])
    #expect(merged.count == 3)
    #expect(merged.contains(historyItem))
    #expect(merged.contains(historyItem2))
  }

  @Test func mergeFishHistoryRemoveDuplicateTest() {
    let merged = mergeFishHistory(
      [historyItem], [historyItem, historyItem2], removeDuplicates: true)
    #expect(merged.count == 2)
    #expect(merged.contains(historyItem))
    #expect(merged.contains(historyItem2))
  }
}