그리드 표현 일부 완료. 데이터 검측 필수 예정

SchemaEditor/Services/ExcelService.cs

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+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using ExcelKv.Core;
+
+namespace SchemaEditor.Services;
+
+public record ParsedItem(string Key, string Value, int Row, int Col);
+
+public class InMemoryStorage : IStorageWrapper
+{
+    public ConcurrentDictionary<string, ParsedItem> Data { get; private set; } = new();
+
+    public Task SetAsync(string key, string value)
+    {
+        Data[key] = new ParsedItem(key, value, -1, -1);
+        return Task.CompletedTask;
+    }
+
+    public Task SetAsync(string key, string value, int row, int col)
+    {
+        Data[key] = new ParsedItem(key, value, row, col);
+        return Task.CompletedTask;
+    }
+
+    public Task IncrementAsync(string key, double value)
+    {
+        Data[key] = new ParsedItem(key, $"[Metric] {value} (Accumulated)", -1, -1);
+        return Task.CompletedTask;
+    }
+
+    public List<ParsedItem> GetEntries()
+    {
+        return Data.Values.OrderBy(x => x.Key).ToList();
+    }
+}
+
+public class ExcelService
+{
+    // Changed to List<ParsedItem> for metadata access
+    public List<ParsedItem> LoadedData { get; private set; } = new();
+    
+    public async Task<List<string>> GetSheetsAsync(string filePath)
+    {
+        return await ExcelLoader.GetSheetNamesAsync(filePath);
+    }
+    
+    public async Task<List<string[]>> GetPreviewAsync(string filePath, string sheetName)
+    {
+        // Increased limit to 1000 to ensure highlighting works for larger files
+        return await ExcelLoader.GetPreviewRowsAsync(filePath, sheetName, 1000);
+    }
+
+    public async Task LoadFileAsync(string filePath, string sheetName, RegionConfig config)
+    {
+        var storage = new InMemoryStorage();
+        var registry = new SchemaRegistry();
+
+        await ExcelLoader.ProcessFileAsync(filePath, sheetName, config, storage, registry);
+        
+        LoadedData = storage.GetEntries();
+    }
+
+    public async Task SaveToStorageAsync(IStorageWrapper targetStorage)
+    {
+        foreach (var entry in LoadedData)
+        {
+            await targetStorage.SetAsync(entry.Key, entry.Value);
+        }
+    }
+}