using System.Collections.Generic;

namespace GeViSetEditor.Core.Models
{
    /// <summary>
    /// Safe representation of a .set file that preserves original binary data
    /// Only parses action mappings, everything else stays as original bytes
    /// </summary>
    public class SafeSetFile
    {
        /// <summary>
        /// Complete original file data - preserved for round-trip
        /// </summary>
        public byte[] OriginalData { get; set; }

        /// <summary>
        /// File size in bytes
        /// </summary>
        public int FileSize { get; set; }

        /// <summary>
        /// Header string (usually "GeViSoft Parameters")
        /// </summary>
        public string Header { get; set; } = "";

        /// <summary>
        /// Extracted action mappings with their file offsets
        /// </summary>
        public List<ActionMappingEntry> ActionMappings { get; set; } = new();

        /// <summary>
        /// Get a clean copy of the original data for writing
        /// </summary>
        public byte[] GetDataForWriting()
        {
            byte[] copy = new byte[OriginalData.Length];
            System.Array.Copy(OriginalData, copy, OriginalData.Length);
            return copy;
        }
    }

    /// <summary>
    /// Action mapping entry with its location in the file
    /// </summary>
    public class ActionMappingEntry
    {
        /// <summary>
        /// File offset where this mapping starts
        /// </summary>
        public int FileOffset { get; set; }

        /// <summary>
        /// Offset of the "Rules" marker
        /// </summary>
        public int RulesMarkerOffset { get; set; }

        /// <summary>
        /// Offset where action data starts (after metadata)
        /// </summary>
        public int ActionDataStartOffset { get; set; }

        /// <summary>
        /// Offset where action data ends
        /// </summary>
        public int ActionDataEndOffset { get; set; }

        /// <summary>
        /// Original bytes for this entire mapping (for preservation)
        /// </summary>
        public byte[] OriginalBytes { get; set; }

        /// <summary>
        /// Extracted action strings
        /// </summary>
        public List<string> Actions { get; set; } = new();

        /// <summary>
        /// Optional: Parsed trigger conditions (if needed later)
        /// </summary>
        public Dictionary<string, object> TriggerConditions { get; set; } = new();

        /// <summary>
        /// Display-friendly description of this mapping
        /// </summary>
        public string GetDescription()
        {
            return $"Mapping at offset {FileOffset}: {Actions.Count} actions";
        }
    }
}