import Foundation

#if canImport(UIKit)
import UIKit
#elseif canImport(AppKit)
import AppKit
#endif

public struct PlainTextParser {
	public static func parse(text: String, title: String, author: String? = nil) -> Book {
		let trimmed = text.trimmingCharacters(in: .whitespacesAndNewlines)
		guard !trimmed.isEmpty else {
			return Book(title: title, author: author, chapters: [])
		}

		let attributedText = AttributedStringBuilder.buildPlain(text: trimmed)
		let chapter = Chapter(index: 0, title: title, text: trimmed, attributedText: attributedText)
		return Book(title: title, author: author, chapters: [chapter])
	}

	public static func parse(url: URL) throws -> Book {
		let text = try String(contentsOf: url, encoding: .utf8)
		let title = url.deletingPathExtension().lastPathComponent
		return parse(text: text, title: title)
	}
}