//
//  AgentSkill.swift
//  oAI
//
//  SKILL.md-style behavioral skills — markdown instruction files injected into the system prompt
//
// SPDX-License-Identifier: AGPL-3.0-or-later
// Copyright (C) 2026 Rune Olsen
//
// This file is part of oAI.
//
// oAI is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// oAI is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General
// Public License for more details.
//
// You should have received a copy of the GNU Affero General Public
// License along with oAI. If not, see <https://www.gnu.org/licenses/>.


import Foundation

struct AgentSkill: Codable, Identifiable {
    var id: UUID
    var name: String              // display name, e.g. "Code Review"
    var skillDescription: String  // short summary shown in the list
    var content: String           // full markdown content (the actual instructions)
    var isActive: Bool            // when true, injected into the system prompt
    var createdAt: Date
    var updatedAt: Date

    init(id: UUID = UUID(), name: String, skillDescription: String = "", content: String,
         isActive: Bool = true, createdAt: Date = Date(), updatedAt: Date = Date()) {
        self.id = id
        self.name = name
        self.skillDescription = skillDescription
        self.content = content
        self.isActive = isActive
        self.createdAt = createdAt
        self.updatedAt = updatedAt
    }

    /// Extract a brief description from the content if skillDescription is empty
    var resolvedDescription: String {
        guard skillDescription.isEmpty else { return skillDescription }
        // Return first non-heading, non-empty line
        for line in content.components(separatedBy: .newlines) {
            let trimmed = line.trimmingCharacters(in: .whitespaces)
            if !trimmed.isEmpty && !trimmed.hasPrefix("#") {
                return String(trimmed.prefix(100))
            }
        }
        return name
    }
}