//! \file       ArcDAT.cs
//! \date       2026-04-14
//! \brief      Penguin Works resource archive.
//
// Copyright (C) 2026 by morkt
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//

using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;

namespace GameRes.Formats.PenguinWorks {
    [Export(typeof(ArchiveFormat))]
    public class DatOpener : ArchiveFormat {
        public override string         Tag { get { return "DAT/PENGUIN"; } }
        public override string Description { get { return "Penguin Works resource archive"; } }
        public override uint     Signature { get { return 0; } }
        public override bool  IsHierarchic { get { return false; } }
        public override bool      CanWrite { get { return false; } }

        public override ArcFile TryOpen(ArcView file) {
            int count = file.View.ReadInt32(0);
            if (!IsSaneCount(count))
                return null;

            var dir = new List<Entry>(count);
            int index_offset = 4, base_offset = 24 * count + 4;
            for (int i = 0; i < count; i++) {
                var name = file.View.ReadString(index_offset, 16);
                var entry = Create<Entry>(name);
                entry.Size = file.View.ReadUInt32(index_offset + 16);
                entry.Offset = base_offset + file.View.ReadUInt32(index_offset + 20);
                if (!entry.CheckPlacement(file.MaxOffset))
                    return null;
                dir.Add(entry);
                index_offset += 24;
            }
            return new ArcFile(file, this, dir);
        }
    }
}