//
//  SubTask.swift
//  Todos
//
//  Created by Sam Jaffe on 3/5/26.
//

import Foundation
import SwiftData

@Model
final class SubTask: Codable {
  var sortOrder: Int = 0
  var name: String
  var task: Task?
  var notes: String = ""
  var status: Status = Status.todo

  init(name: String, parent: Task? = nil) {
    self.name = name
    self.task = parent
    self.sortOrder = parent?.subtasks.count ?? 0
  }

  func yaml(_ indent: Int = 0) -> String {
    let hdr = String(repeating: "  ", count: indent)
    let subhdr = hdr + "  # "
    var rval = hdr + "- [\(status.rawValue)] \(name)\n"
    if !notes.isEmpty {
      rval += subhdr + notes.replacingOccurrences(of: "\n", with: "\n" + subhdr) + "\n"
    }
    return rval
  }

  enum CodingKeys: CodingKey { case name, notes, status }

  required init(from decoder: any Decoder) throws {
    let container = try decoder.container(keyedBy: CodingKeys.self)
    name = try container.decode(String.self, forKey: .name)
    notes = try container.decode(String.self, forKey: .notes)
    status = try container.decode(Status.self, forKey: .status)
  }

  func encode(to encoder: any Encoder) throws {
    var container = encoder.container(keyedBy: CodingKeys.self)
    try container.encode(name, forKey: .name)
    try container.encode(notes, forKey: .notes)
    try container.encode(status, forKey: .status)
  }
}