import Foundation

/// String escaping for values interpolated into AppleScript source. Every
/// module that sends via AppleScript (iMessage, iMail, future iNote /
/// iReminder fallbacks) previously re-implemented the same backslash + quote
/// replacement. Extracted once so a missed escape can be fixed in one place.
public enum AppleScriptEscape {
    /// Escape a value for embedding inside a double-quoted AppleScript
    /// literal: `"…\(escaped)…"`. Handles backslashes and double quotes.
    /// Newlines in the source are preserved as the literal characters
    /// `\\n` because AppleScript treats raw newlines inside `"…"` literals
    /// as a syntax error when they originate from interpolation.
    public static func quote(_ value: String) -> String {
        value
            .replacingOccurrences(of: "\\", with: "\\\\")
            .replacingOccurrences(of: "\"", with: "\\\"")
            .replacingOccurrences(of: "\n", with: "\\n")
            .replacingOccurrences(of: "\r", with: "\\r")
    }
}