using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Text.Json;
using System.Threading;
using System.Threading.Tasks;

namespace AxCopilot.Services.Agent;

public class MultiReadTool : IAgentTool
{
	public string Name => "multi_read";

	public string Description => "Read multiple files in a single call (max 10). Returns concatenated contents with file headers. More efficient than calling file_read multiple times.";

	public ToolParameterSchema Parameters
	{
		get
		{
			ToolParameterSchema obj = new ToolParameterSchema
			{
				Properties = new Dictionary<string, ToolProperty>
				{
					["paths"] = new ToolProperty
					{
						Type = "array",
						Description = "List of file paths to read (max 10)",
						Items = new ToolProperty
						{
							Type = "string",
							Description = "File path"
						}
					},
					["max_lines"] = new ToolProperty
					{
						Type = "integer",
						Description = "Max lines per file (default 200)"
					}
				}
			};
			int num = 1;
			List<string> list = new List<string>(num);
			CollectionsMarshal.SetCount(list, num);
			CollectionsMarshal.AsSpan(list)[0] = "paths";
			obj.Required = list;
			return obj;
		}
	}

	public Task<ToolResult> ExecuteAsync(JsonElement args, AgentContext context, CancellationToken ct = default(CancellationToken))
	{
		JsonElement value;
		int num = (args.TryGetProperty("max_lines", out value) ? value.GetInt32() : 200);
		if (num <= 0)
		{
			num = 200;
		}
		if (!args.TryGetProperty("paths", out var value2) || value2.ValueKind != JsonValueKind.Array)
		{
			return Task.FromResult(ToolResult.Fail("'paths'는 문자열 배열이어야 합니다."));
		}
		List<string> list = new List<string>();
		foreach (JsonElement item in value2.EnumerateArray())
		{
			string text = item.GetString();
			if (!string.IsNullOrEmpty(text))
			{
				list.Add(text);
			}
		}
		if (list.Count == 0)
		{
			return Task.FromResult(ToolResult.Fail("읽을 파일이 없습니다."));
		}
		if (list.Count > 10)
		{
			return Task.FromResult(ToolResult.Fail("최대 10개 파일만 지원합니다."));
		}
		StringBuilder stringBuilder = new StringBuilder();
		int num2 = 0;
		foreach (string item2 in list)
		{
			string text2 = (Path.IsPathRooted(item2) ? item2 : Path.Combine(context.WorkFolder, item2));
			StringBuilder stringBuilder2 = stringBuilder;
			StringBuilder stringBuilder3 = stringBuilder2;
			StringBuilder.AppendInterpolatedStringHandler handler = new StringBuilder.AppendInterpolatedStringHandler(8, 1, stringBuilder2);
			handler.AppendLiteral("═══ ");
			handler.AppendFormatted(Path.GetFileName(text2));
			handler.AppendLiteral(" ═══");
			stringBuilder3.AppendLine(ref handler);
			stringBuilder2 = stringBuilder;
			StringBuilder stringBuilder4 = stringBuilder2;
			handler = new StringBuilder.AppendInterpolatedStringHandler(6, 1, stringBuilder2);
			handler.AppendLiteral("Path: ");
			handler.AppendFormatted(text2);
			stringBuilder4.AppendLine(ref handler);
			if (!context.IsPathAllowed(text2))
			{
				stringBuilder.AppendLine("[접근 차단됨]");
			}
			else if (!File.Exists(text2))
			{
				stringBuilder.AppendLine("[파일 없음]");
			}
			else
			{
				try
				{
					List<string> list2 = File.ReadLines(text2).Take(num).ToList();
					for (int i = 0; i < list2.Count; i++)
					{
						stringBuilder2 = stringBuilder;
						StringBuilder stringBuilder5 = stringBuilder2;
						handler = new StringBuilder.AppendInterpolatedStringHandler(1, 2, stringBuilder2);
						handler.AppendFormatted(i + 1);
						handler.AppendLiteral("\t");
						handler.AppendFormatted(list2[i]);
						stringBuilder5.AppendLine(ref handler);
					}
					if (list2.Count >= num)
					{
						stringBuilder2 = stringBuilder;
						StringBuilder stringBuilder6 = stringBuilder2;
						handler = new StringBuilder.AppendInterpolatedStringHandler(23, 1, stringBuilder2);
						handler.AppendLiteral("... (이후 생략, max_lines=");
						handler.AppendFormatted(num);
						handler.AppendLiteral(")");
						stringBuilder6.AppendLine(ref handler);
					}
					num2++;
				}
				catch (Exception ex)
				{
					stringBuilder2 = stringBuilder;
					StringBuilder stringBuilder7 = stringBuilder2;
					handler = new StringBuilder.AppendInterpolatedStringHandler(9, 1, stringBuilder2);
					handler.AppendLiteral("[읽기 오류: ");
					handler.AppendFormatted(ex.Message);
					handler.AppendLiteral("]");
					stringBuilder7.AppendLine(ref handler);
				}
			}
			stringBuilder.AppendLine();
		}
		return Task.FromResult(ToolResult.Ok($"{num2}/{list.Count}개 파일 읽기 완료.\n\n{stringBuilder}"));
	}
}