Fishee/Sources/Algebra.swift

//
// 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

/// Data Structure/Schema representing an entry in a fish history file.
struct FishHistoryEntry: Equatable {
  let cmd: String
  let when: Int
  let paths: [String]

  /// Converts time to Date object
  func getDate() -> Date {
    Date(timeIntervalSince1970: TimeInterval(when))
  }

  /// Converts structure back to list of strings as expected in a fish history file.
  func writeEntry() -> [String] {
    var output: [String] = []

    output.append("- cmd: \(cmd)")
    output.append("  when: \(when)")

    if !paths.isEmpty {
      output.append("  paths:")
      paths.forEach { output.append("    - \(String($0))") }
    }

    return output
  }
}