//
//  ToolInput.swift
//  Poche
//
//  Author:  Simon-Pierre Boucher
//  Contact: contact@spboucher.ai
//

import Foundation

/// Shared sanitation for model-provided tool arguments. Model output is
/// hostile input: trim it, cap it, never let it balloon the store or the
/// confirmation card.
enum ToolInput {
    static let maxTitleLength = 80
    static let maxBodyLength = 2000

    /// Trimmed, capped title — nil when effectively empty.
    static func title(_ raw: String) -> String? {
        let trimmed = raw.trimmingCharacters(in: .whitespacesAndNewlines)
        guard !trimmed.isEmpty else { return nil }
        return String(trimmed.prefix(maxTitleLength))
    }

    static func body(_ raw: String) -> String? {
        let trimmed = raw.trimmingCharacters(in: .whitespacesAndNewlines)
        guard !trimmed.isEmpty else { return nil }
        return String(trimmed.prefix(maxBodyLength))
    }

    static func optionalText(_ raw: String?) -> String? {
        guard let raw else { return nil }
        return title(raw)
    }
}