Antigravity 초안

.gitignore

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+.venv
+bin/
+obj/
+.vscode/
+.idea/
+*.user
+*.suo
+*.db
+*.log
+checkpoints/
+sample.txt

ExcelKv.Core/Class1.cs

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+namespace ExcelKv.Core;
+
+public class Class1
+{
+
+}

ExcelKv.Core/ExcelKv.Core.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MiniExcel" Version="1.42.0" />
+    <PackageReference Include="StackExchange.Redis" Version="2.10.1" />
+  </ItemGroup>
+
+</Project>

ExcelKv.Core/ExcelLoader.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using MiniExcelLibs;
+using StackExchange.Redis; // We'll just use IDatabase interface if possible, or dependency injection.
+                           // For now, let's keep it simple and pass the db/batch or connection string.
+                           // Better yet, pass an interface IStorageWrapper.
+
+namespace ExcelKv.Core;
+
+// Simple Config DTO for user-defined areas
+public class RegionConfig
+{
+    public int TopHeaderStartRow { get; set; } = 0;
+    public int TopHeaderDepth { get; set; } = 3;
+    public int LeftHeaderStartCol { get; set; } = 0;
+    public int LeftHeaderWidth { get; set; } = 4;
+}
+
+public interface IStorageWrapper
+{
+    Task SetAsync(string key, string value);
+    Task IncrementAsync(string key, double value);
+}
+
+// Live Aggregator Helper (Moved here for shared access)
+public class LiveAggregator
+{
+    // Simple basic check for now. Can be expanded.
+    private static readonly System.Text.RegularExpressions.Regex MetricPattern = 
+        new System.Text.RegularExpressions.Regex(@"(수량|합계|Volume|Weight|Total|Usage)", System.Text.RegularExpressions.RegexOptions.IgnoreCase | System.Text.RegularExpressions.RegexOptions.Compiled);
+
+    public static bool IsMetric(string colName) => MetricPattern.IsMatch(colName);
+    
+    public static string GenerateGroupKey(string sheetName, string category, string spec, string metricName)
+        => $"Stats:{Use_(category)}:{Use_(spec)}:{Use_(metricName)}";
+        
+    private static string Use_(string s) => string.IsNullOrWhiteSpace(s) ? "Unknown" : s.Replace(" ", "_");
+}
+
+
+public class ExcelLoader
+{
+    public static async Task<int> ProcessFileAsync(
+        string filePath, 
+        string sheetName, 
+        RegionConfig config, 
+        IStorageWrapper storage, 
+        SchemaRegistry registry)
+    {
+        Console.WriteLine($"[Core.Loader] Processing {filePath} Sheet: {sheetName}...");
+        Console.WriteLine($"[Config] Top: Row{config.TopHeaderStartRow} (+{config.TopHeaderDepth}), Left: Col{config.LeftHeaderStartCol} (+{config.LeftHeaderWidth})");
+        
+        var rows = MiniExcel.Query(filePath, sheetName: sheetName, useHeaderRow: false).ToList();
+        
+        // Validation
+        int dataStartRow = config.TopHeaderStartRow + config.TopHeaderDepth;
+        if (rows.Count <= dataStartRow) return 0;
+
+        // 1. Analyze Top Headers
+        // Extract the rows that form the Top Header
+        List<string[]> topHeaderRows = new();
+        for (int i = config.TopHeaderStartRow; i < dataStartRow; i++)
+        {
+             var rowDict = (IDictionary<string, object>)rows[i];
+             topHeaderRows.Add(FlattenDictionaryRow(rowDict));
+        }
+        
+        // Flatten Top Headers (Horizontal Forward Fill)
+        // Offset: We effectively care about columns starting from LeftHeaderWidth to End
+        // but we pass the absolute index.
+        var topAxisKeys = FlattenTopHeaders(topHeaderRows, config.LeftHeaderStartCol + config.LeftHeaderWidth);
+        
+        // Register Schema
+        string ns = System.IO.Path.GetFileName(filePath) + "_" + sheetName;
+        registry.RegisterSchema(ns, topAxisKeys);
+
+        // 2. Process Data Rows
+        // State for Vertical Forward Fill (Left Headers)
+        string[] lastLeftValues = new string[config.LeftHeaderWidth];
+
+        int processedCount = 0;
+
+        for (int i = dataStartRow; i < rows.Count; i++)
+        {
+            var rowDict = (IDictionary<string, object>)rows[i];
+            var rowVals = FlattenDictionaryRow(rowDict);
+            
+            // A. Build Left Axis Key (Vertical Forward Fill)
+            var currentLeftParts = new List<string>();
+            bool rowHasContent = false;
+            
+            for (int c = 0; c < config.LeftHeaderWidth; c++)
+            {
+                int absCol = config.LeftHeaderStartCol + c;
+                string val = (absCol < rowVals.Length) ? rowVals[absCol] : "";
+                
+                // Logic: Unmerge & Fill (Same as Vertical Forward Fill)
+                if (string.IsNullOrWhiteSpace(val))
+                {
+                     val = lastLeftValues[c];
+                }
+                else
+                {
+                     lastLeftValues[c] = val; // New merge block starts
+                }
+                
+                if(!string.IsNullOrWhiteSpace(val)) 
+                {
+                    currentLeftParts.Add(val);
+                    rowHasContent = true;
+                }
+            }
+            
+            // Skip rows with no left context (e.g. empty separator lines)
+            if (!rowHasContent) continue; 
+
+            string leftKey = string.Join(".", currentLeftParts);
+
+            // B. Map Values to Top Axis Keys
+            for (int c = config.LeftHeaderStartCol + config.LeftHeaderWidth; c < rowVals.Length; c++)
+            {
+                // Align physical column to Top Axis Index
+                // Top Axis Keys[0] corresponds to column (LeftStart + LeftWidth)
+                int topIndex = c - (config.LeftHeaderStartCol + config.LeftHeaderWidth);
+                
+                if (topIndex < 0 || topIndex >= topAxisKeys.Count) continue;
+
+                string topKey = topAxisKeys[topIndex]; 
+                string val = rowVals[c];
+                
+                if (string.IsNullOrWhiteSpace(val)) continue; // Sparse
+
+                // C. Construct Final Key
+                string fullKey = $"{sheetName}:{leftKey}*{topKey}";
+                
+                await storage.SetAsync(fullKey, val);
+
+                // D. Live Compute
+                if (LiveAggregator.IsMetric(topKey) && double.TryParse(val, out double dVal))
+                {
+                     await storage.IncrementAsync($"Stats:Global:{topKey}", dVal);
+                }
+            }
+            processedCount++;
+        }
+        
+        return processedCount;
+    }
+
+    private static string[] FlattenDictionaryRow(IDictionary<string, object> rowDict)
+    {
+        // MiniExcel Dynamic Dictionary Keys are A, B... AA..
+        // We assume we want 0-indexed string array.
+        // We find the 'Max' column index to allocate array.
+        
+        // This sorting + re-indexing is a bit naive for very wide sheets but OK for PoC.
+        // Better to use MiniExcel's column index if available, but dynamic object hides it.
+        // We'll trust the Key sorting for now.
+        var sortedKeys = rowDict.Keys.OrderBy(k => k.Length).ThenBy(k => k).ToList();
+        var result = new string[sortedKeys.Count]; 
+        // Note: Dictionary might define "A", "C" but skip "B". 
+        // This simple list approach collapses them. 
+        // TO BE EXACT: We should convert "A"->0, "B"->1.
+        // For PoC we keep this, but in production we need ColumnLetterToIndex logic.
+        
+        for (int i = 0; i < sortedKeys.Count; i++)
+        {
+            var val = rowDict[sortedKeys[i]];
+            result[i] = val?.ToString() ?? "";
+        }
+        return result;
+    }
+
+    private static List<string> FlattenTopHeaders(List<string[]> headerRows, int startCol)
+    {
+        if (headerRows.Count == 0) return new List<string>();
+        int maxCol = headerRows.Max(r => r.Length);
+        var flatHeaders = new List<string>();
+        
+        var lastValues = new string[headerRows.Count]; // Last value for each ROW level (Horizontal Fill)
+
+        // Iterate Columns
+        for (int c = startCol; c < maxCol; c++)
+        {
+            var parts = new List<string>();
+            // Iterate Rows (Depth)
+            for (int r = 0; r < headerRows.Count; r++)
+            {
+                string val = (c < headerRows[r].Length) ? headerRows[r][c] : "";
+                
+                // Horizontal Forward Fill (Unmerge Logic)
+                if (string.IsNullOrWhiteSpace(val))
+                {
+                    val = lastValues[r];
+                }
+                else
+                {
+                    lastValues[r] = val;
+                }
+                
+                if (!string.IsNullOrWhiteSpace(val)) parts.Add(val);
+            }
+            flatHeaders.Add(string.Join(".", parts));
+        }
+        return flatHeaders;
+    }
+}

ExcelKv.Core/SchemaRegistry.cs

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+using System.Collections.Generic;
+
+namespace ExcelKv.Core;
+
+// --- Schema Middleware ---
+public class SchemaRegistry
+{
+    private Dictionary<string, HashSet<string>> _knownSchemas = new();
+
+    public void RegisterSchema(string namespaceKey, List<string> newColumns)
+    {
+        if (!_knownSchemas.ContainsKey(namespaceKey))
+        {
+            _knownSchemas[namespaceKey] = new HashSet<string>();
+            foreach (var col in newColumns) _knownSchemas[namespaceKey].Add(col);
+        }
+        else
+        {
+            var existing = _knownSchemas[namespaceKey];
+            foreach (var col in newColumns) if (!existing.Contains(col)) existing.Add(col);
+        }
+    }
+}

ExcelKv.Core/SiUnit.cs

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+namespace ExcelKv.Core.Units;
+
+public enum UnitCategory
+{
+    None = 0,
+    Length,
+    Area,
+    Volume,
+    Weight,
+    Count, // ex: EA, Set
+    Time   // ex: Hour, Day
+}
+
+public enum SiUnit
+{
+    // Default
+    None = 0,
+
+    // Length (Base: Meter)
+    Meter = 100,
+    Millimeter = 101,
+    Centimeter = 102,
+    Kilometer = 103,
+
+    // Area (Base: SquareMeter)
+    SquareMeter = 200,
+    Hectare = 201,
+
+    // Volume (Base: CubicMeter)
+    CubicMeter = 300,
+    Liter = 301,
+
+    // Weight/Mass (Base: Kilogram)
+    Kilogram = 400,
+    Ton = 401,
+    Gram = 402,
+
+    // Count
+    Each = 900,
+    Set = 901
+}
+
+public static class SiUnitExtensions 
+{
+    public static UnitCategory GetCategory(this SiUnit unit)
+    {
+        int id = (int)unit;
+        if (id >= 100 && id < 200) return UnitCategory.Length;
+        if (id >= 200 && id < 300) return UnitCategory.Area;
+        if (id >= 300 && id < 400) return UnitCategory.Volume;
+        if (id >= 400 && id < 500) return UnitCategory.Weight;
+        if (id >= 900 && id < 1000) return UnitCategory.Count;
+        return UnitCategory.None;
+    }
+
+    public static string ToSymbol(this SiUnit unit) => unit switch
+    {
+        SiUnit.Meter => "m",
+        SiUnit.Millimeter => "mm",
+        SiUnit.Centimeter => "cm",
+        SiUnit.Kilometer => "km",
+        SiUnit.SquareMeter => "m2",
+        SiUnit.CubicMeter => "m3",
+        SiUnit.Kilogram => "kg",
+        SiUnit.Ton => "ton",
+        SiUnit.Each => "EA",
+        _ => ""
+    };
+}

ExcelKvPoC/ExcelKvPoC.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Garnet" Version="1.0.35" />
+    <PackageReference Include="MiniExcel" Version="1.42.0" />
+    <PackageReference Include="StackExchange.Redis" Version="2.10.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ExcelKv.Core\ExcelKv.Core.csproj" />
+  </ItemGroup>
+
+</Project>

ExcelKvPoC/Program.cs

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+using System;
+using System.IO;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using Garnet;
+using MiniExcelLibs;
+
+using System;
+using System.IO;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using Garnet;
+using MiniExcelLibs;
+using ExcelKv.Core; // Use Shared Library
+
+namespace ExcelKvPoC;
+
+// --- 1. Storage Layer (Garnet) Adapter ---
+// Adapter to implement IStorageWrapper for Core Loader
+public class GarnetClientAdapter : IStorageWrapper, IDisposable
+{
+    private readonly StackExchange.Redis.ConnectionMultiplexer _redis;
+    private readonly StackExchange.Redis.IDatabase _db;
+    private readonly StackExchange.Redis.IBatch _batch;
+    private readonly List<Task> _tasks = new();
+
+    public GarnetClientAdapter(string connectionString = "localhost:3278")
+    {
+        _redis = StackExchange.Redis.ConnectionMultiplexer.Connect(connectionString);
+        _db = _redis.GetDatabase();
+        _batch = _db.CreateBatch();
+    }
+
+    public async Task SetAsync(string key, string value)
+    {
+        _tasks.Add(_batch.StringSetAsync(key, value));
+        await Task.CompletedTask; // Fire and forget in batch context mainly
+    }
+
+    public async Task IncrementAsync(string key, double value)
+    {
+        _tasks.Add(_batch.StringIncrementAsync(key, value));
+        await Task.CompletedTask;
+    }
+
+    public void ExecuteBatch()
+    {
+        _batch.Execute();
+        Task.WaitAll(_tasks.ToArray());
+        _tasks.Clear();
+    }
+
+    public void Dispose()
+    {
+        _redis.Dispose();
+    }
+}
+
+
+public class GarnetServerWrapper : IDisposable
+{
+    private readonly GarnetServer _server;
+
+    public GarnetServerWrapper()
+    {
+        try 
+        {
+            var serverArgs = new string[] { "--port", "3278" };
+            _server = new GarnetServer(serverArgs);
+            _server.Start();
+            Console.WriteLine("[Garnet] Server started on port 3278");
+        }
+        catch(Exception ex)
+        {
+            Console.WriteLine($"[Garnet] Failed to start: {ex.Message}");
+            throw;
+        }
+    }
+
+    public void SaveCheckpoint()
+    {
+        Console.WriteLine("[Garnet] Saving checkpoint...");
+        Console.WriteLine("[Garnet] Checkpoint saved (Simulated).");
+    }
+
+    public void Dispose()
+    {
+        _server.Dispose();
+        Console.WriteLine("[Garnet] Server stopped");
+    }
+}
+
+class Program
+{
+    static async Task Main(string[] args)
+    {
+        Console.WriteLine("=== Excel KV Middleware PoC (Using Core) ===");
+        
+        using var server = new GarnetServerWrapper();
+        var registry = new SchemaRegistry();
+
+        string excelPath = "/home/lectom/repos/design-bim-dogma/DB작업_U형측구.xlsx";
+        string sheetName = "U형측구현황DB작업";
+        
+        if (File.Exists(excelPath)) 
+        {
+            // Define Region Config (Interactive Area Simulation)
+            var rangeConfig = new RegionConfig
+            {
+                TopHeaderStartRow = 0,
+                TopHeaderDepth = 3,
+                LeftHeaderStartCol = 0,
+                LeftHeaderWidth = 4
+            };
+
+            using var client = new GarnetClientAdapter();
+            
+            // Process
+            await ExcelLoader.ProcessFileAsync(excelPath, sheetName, rangeConfig, client, registry);
+            
+            client.ExecuteBatch(); // Commit
+            
+            // Verification Dump
+            DumpSample(sheetName);
+        }
+        else
+        {
+            Console.WriteLine($"File not found: {excelPath}");
+        }
+        
+        server.SaveCheckpoint();
+        Console.WriteLine("Done.");
+    }
+    
+    static void DumpSample(string sheetName)
+    {
+        Console.WriteLine("\n--- Exporting to sample.txt ---");
+        using var redis = StackExchange.Redis.ConnectionMultiplexer.Connect("localhost:3278");
+        var serverEnd = redis.GetServer("localhost:3278");
+        var db = redis.GetDatabase();
+        var keys = serverEnd.Keys(pattern: $"{sheetName}:*");
+        
+        using (var writer = new StreamWriter("sample.txt"))
+        {
+            int count = 0;
+            foreach(var key in keys)
+            {
+                 string val = db.StringGet(key);
+                 writer.WriteLine($"{key} = {val}");
+                 count++;
+            }
+            Console.WriteLine($"[Export] Written {count} keys to sample.txt");
+        }
+    }
+}

ExcelKvSystem.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.31903.59
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ExcelKv.Core", "ExcelKv.Core\ExcelKv.Core.csproj", "{E0E76781-BEF9-4CC2-9A3A-8D2A70A2AE56}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SchemaEditor", "SchemaEditor\SchemaEditor.csproj", "{7BA2A1F6-4CB9-4C1D-AC93-1063EC1429D1}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ExcelKvPoC", "ExcelKvPoC\ExcelKvPoC.csproj", "{B9F797C3-FB2A-4873-A20E-B083208682A5}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{E0E76781-BEF9-4CC2-9A3A-8D2A70A2AE56}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E0E76781-BEF9-4CC2-9A3A-8D2A70A2AE56}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E0E76781-BEF9-4CC2-9A3A-8D2A70A2AE56}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E0E76781-BEF9-4CC2-9A3A-8D2A70A2AE56}.Release|Any CPU.Build.0 = Release|Any CPU
+		{7BA2A1F6-4CB9-4C1D-AC93-1063EC1429D1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{7BA2A1F6-4CB9-4C1D-AC93-1063EC1429D1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{7BA2A1F6-4CB9-4C1D-AC93-1063EC1429D1}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{7BA2A1F6-4CB9-4C1D-AC93-1063EC1429D1}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B9F797C3-FB2A-4873-A20E-B083208682A5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B9F797C3-FB2A-4873-A20E-B083208682A5}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B9F797C3-FB2A-4873-A20E-B083208682A5}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B9F797C3-FB2A-4873-A20E-B083208682A5}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal

README.md

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+# Excel KV Middleware & Schema Editor
+
+복잡한 구조의 엑셀 데이터를 고성능 Key-Value Store(**Microsoft Garnet**)에 적재하고, 표준 스키마를 정의/편집하는 시스템입니다.
+
+## 🚀 Key Features
+
+### 1. High-Performance Ingestion
+- **Pure .NET 8.0**: Python 등 외부 의존성 없는 단일 플랫폼.
+- **Embedded Garnet**: Redis 호환 고성능 인메모리 스토어 내장.
+- **2D Flattening**:
+  - 병합된 Cross-Tab 엑셀 헤더를 논리적 Key로 자동 평탄화.
+  - Key Format: `{Sheet}:{LeftAxis}*{TopAxis}` (예: `Station.No1*Concrete.TypeA`)
+
+### 2. Smart Schema Management
+- **Interactive Region**: 헤더와 데이터 영역을 동적으로 지정 가능 (`RegionConfig`).
+- **Unmerge & Fill**: 병합된 셀을 자동으로 분리하여 데이터 컨텍스트 유지.
+- **SI Unit System**: 물리적 단위(`m`, `m3`, `kg`)를 코드 레벨(`SiUnit` Enum)에서 엄격하게 관리.
+
+### 3. Editor UI (In Progress)
+- **Blazor Web App**: 웹 기반의 협업 가능한 스키마 편집기.
+- **CRDT Sync**: 다수 사용자가 동시 편집 시 충돌 없는 병합 지원 예정.
+
+## 🛠 Project Structure
+
+- **`ExcelKv.Core`**: 핵심 로직 라이브러리 (SI Unit, ExcelLoader, SchemaRegistry).
+- **`ExcelKvPoC`**: 데이터 파싱 및 적재 검증용 콘솔 앱.
+- **`SchemaEditor`**: 표준 스키마 편집용 Blazor 웹 애플리케이션.
+
+## 🚦 Getting Started
+
+### Prerequisites
+- .NET SDK 8.0+
+
+### Run PoC (Excel Ingestion)
+```bash
+dotnet run --project ExcelKvPoC
+```
+- 실행 시 `sample.txt`에 파싱된 Key-Value 결과가 출력됩니다.
+
+### Run Editor (Blazor)
+```bash
+dotnet run --project SchemaEditor
+```
+
+## 📝 Roadmap
+- [x] Excel Parsing & 2D Flattening
+- [x] Garnet Integration (Embedded)
+- [x] SI Unit System Definition
+- [ ] Blazor Editor UI Implementation
+- [ ] CRDT Synchronization Layer

SchemaEditor/Components/App.razor

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+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <base href="/" />
+    <link rel="stylesheet" href="bootstrap/bootstrap.min.css" />
+    <link rel="stylesheet" href="app.css" />
+    <link rel="stylesheet" href="SchemaEditor.styles.css" />
+    <link rel="icon" type="image/png" href="favicon.png" />
+    <HeadOutlet />
+</head>
+
+<body>
+    <Routes />
+    <script src="_framework/blazor.web.js"></script>
+</body>
+
+</html>

SchemaEditor/Components/Layout/MainLayout.razor

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+@inherits LayoutComponentBase
+
+<div class="page">
+    <div class="sidebar">
+        <NavMenu />
+    </div>
+
+    <main>
+        <div class="top-row px-4">
+            <a href="https://learn.microsoft.com/aspnet/core/" target="_blank">About</a>
+        </div>
+
+        <article class="content px-4">
+            @Body
+        </article>
+    </main>
+</div>
+
+<div id="blazor-error-ui">
+    An unhandled error has occurred.
+    <a href="" class="reload">Reload</a>
+    <a class="dismiss">🗙</a>
+</div>

SchemaEditor/Components/Layout/MainLayout.razor.css

@@ -0,0 +1,96 @@
+.page {
+    position: relative;
+    display: flex;
+    flex-direction: column;
+}
+
+main {
+    flex: 1;
+}
+
+.sidebar {
+    background-image: linear-gradient(180deg, rgb(5, 39, 103) 0%, #3a0647 70%);
+}
+
+.top-row {
+    background-color: #f7f7f7;
+    border-bottom: 1px solid #d6d5d5;
+    justify-content: flex-end;
+    height: 3.5rem;
+    display: flex;
+    align-items: center;
+}
+
+    .top-row ::deep a, .top-row ::deep .btn-link {
+        white-space: nowrap;
+        margin-left: 1.5rem;
+        text-decoration: none;
+    }
+
+    .top-row ::deep a:hover, .top-row ::deep .btn-link:hover {
+        text-decoration: underline;
+    }
+
+    .top-row ::deep a:first-child {
+        overflow: hidden;
+        text-overflow: ellipsis;
+    }
+
+@media (max-width: 640.98px) {
+    .top-row {
+        justify-content: space-between;
+    }
+
+    .top-row ::deep a, .top-row ::deep .btn-link {
+        margin-left: 0;
+    }
+}
+
+@media (min-width: 641px) {
+    .page {
+        flex-direction: row;
+    }
+
+    .sidebar {
+        width: 250px;
+        height: 100vh;
+        position: sticky;
+        top: 0;
+    }
+
+    .top-row {
+        position: sticky;
+        top: 0;
+        z-index: 1;
+    }
+
+    .top-row.auth ::deep a:first-child {
+        flex: 1;
+        text-align: right;
+        width: 0;
+    }
+
+    .top-row, article {
+        padding-left: 2rem !important;
+        padding-right: 1.5rem !important;
+    }
+}
+
+#blazor-error-ui {
+    background: lightyellow;
+    bottom: 0;
+    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
+    display: none;
+    left: 0;
+    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
+    position: fixed;
+    width: 100%;
+    z-index: 1000;
+}
+
+    #blazor-error-ui .dismiss {
+        cursor: pointer;
+        position: absolute;
+        right: 0.75rem;
+        top: 0.5rem;
+    }

SchemaEditor/Components/Layout/NavMenu.razor

@@ -0,0 +1,30 @@
+<div class="top-row ps-3 navbar navbar-dark">
+    <div class="container-fluid">
+        <a class="navbar-brand" href="">SchemaEditor</a>
+    </div>
+</div>
+
+<input type="checkbox" title="Navigation menu" class="navbar-toggler" />
+
+<div class="nav-scrollable" onclick="document.querySelector('.navbar-toggler').click()">
+    <nav class="flex-column">
+        <div class="nav-item px-3">
+            <NavLink class="nav-link" href="" Match="NavLinkMatch.All">
+                <span class="bi bi-house-door-fill-nav-menu" aria-hidden="true"></span> Home
+            </NavLink>
+        </div>
+
+        <div class="nav-item px-3">
+            <NavLink class="nav-link" href="counter">
+                <span class="bi bi-plus-square-fill-nav-menu" aria-hidden="true"></span> Counter
+            </NavLink>
+        </div>
+
+        <div class="nav-item px-3">
+            <NavLink class="nav-link" href="weather">
+                <span class="bi bi-list-nested-nav-menu" aria-hidden="true"></span> Weather
+            </NavLink>
+        </div>
+    </nav>
+</div>
+

SchemaEditor/Components/Layout/NavMenu.razor.css

@@ -0,0 +1,105 @@
+.navbar-toggler {
+    appearance: none;
+    cursor: pointer;
+    width: 3.5rem;
+    height: 2.5rem;
+    color: white;
+    position: absolute;
+    top: 0.5rem;
+    right: 1rem;
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    background: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.55%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") no-repeat center/1.75rem rgba(255, 255, 255, 0.1);
+}
+
+.navbar-toggler:checked {
+    background-color: rgba(255, 255, 255, 0.5);
+}
+
+.top-row {
+    height: 3.5rem;
+    background-color: rgba(0,0,0,0.4);
+}
+
+.navbar-brand {
+    font-size: 1.1rem;
+}
+
+.bi {
+    display: inline-block;
+    position: relative;
+    width: 1.25rem;
+    height: 1.25rem;
+    margin-right: 0.75rem;
+    top: -1px;
+    background-size: cover;
+}
+
+.bi-house-door-fill-nav-menu {
+    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='white' class='bi bi-house-door-fill' viewBox='0 0 16 16'%3E%3Cpath d='M6.5 14.5v-3.505c0-.245.25-.495.5-.495h2c.25 0 .5.25.5.5v3.5a.5.5 0 0 0 .5.5h4a.5.5 0 0 0 .5-.5v-7a.5.5 0 0 0-.146-.354L13 5.793V2.5a.5.5 0 0 0-.5-.5h-1a.5.5 0 0 0-.5.5v1.293L8.354 1.146a.5.5 0 0 0-.708 0l-6 6A.5.5 0 0 0 1.5 7.5v7a.5.5 0 0 0 .5.5h4a.5.5 0 0 0 .5-.5Z'/%3E%3C/svg%3E");
+}
+
+.bi-plus-square-fill-nav-menu {
+    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='white' class='bi bi-plus-square-fill' viewBox='0 0 16 16'%3E%3Cpath d='M2 0a2 2 0 0 0-2 2v12a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V2a2 2 0 0 0-2-2H2zm6.5 4.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3a.5.5 0 0 1 1 0z'/%3E%3C/svg%3E");
+}
+
+.bi-list-nested-nav-menu {
+    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='white' class='bi bi-list-nested' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M4.5 11.5A.5.5 0 0 1 5 11h10a.5.5 0 0 1 0 1H5a.5.5 0 0 1-.5-.5zm-2-4A.5.5 0 0 1 3 7h10a.5.5 0 0 1 0 1H3a.5.5 0 0 1-.5-.5zm-2-4A.5.5 0 0 1 1 3h10a.5.5 0 0 1 0 1H1a.5.5 0 0 1-.5-.5z'/%3E%3C/svg%3E");
+}
+
+.nav-item {
+    font-size: 0.9rem;
+    padding-bottom: 0.5rem;
+}
+
+    .nav-item:first-of-type {
+        padding-top: 1rem;
+    }
+
+    .nav-item:last-of-type {
+        padding-bottom: 1rem;
+    }
+
+    .nav-item ::deep .nav-link {
+        color: #d7d7d7;
+        background: none;
+        border: none;
+        border-radius: 4px;
+        height: 3rem;
+        display: flex;
+        align-items: center;
+        line-height: 3rem;
+        width: 100%;
+    }
+
+.nav-item ::deep a.active {
+    background-color: rgba(255,255,255,0.37);
+    color: white;
+}
+
+.nav-item ::deep .nav-link:hover {
+    background-color: rgba(255,255,255,0.1);
+    color: white;
+}
+
+.nav-scrollable {
+    display: none;
+}
+
+.navbar-toggler:checked ~ .nav-scrollable {
+    display: block;
+}
+
+@media (min-width: 641px) {
+    .navbar-toggler {
+        display: none;
+    }
+
+    .nav-scrollable {
+        /* Never collapse the sidebar for wide screens */
+        display: block;
+
+        /* Allow sidebar to scroll for tall menus */
+        height: calc(100vh - 3.5rem);
+        overflow-y: auto;
+    }
+}

SchemaEditor/Components/Pages/Counter.razor

@@ -0,0 +1,19 @@
+@page "/counter"
+@rendermode InteractiveServer
+
+<PageTitle>Counter</PageTitle>
+
+<h1>Counter</h1>
+
+<p role="status">Current count: @currentCount</p>
+
+<button class="btn btn-primary" @onclick="IncrementCount">Click me</button>
+
+@code {
+    private int currentCount = 0;
+
+    private void IncrementCount()
+    {
+        currentCount++;
+    }
+}

SchemaEditor/Components/Pages/Error.razor

@@ -0,0 +1,36 @@
+@page "/Error"
+@using System.Diagnostics
+
+<PageTitle>Error</PageTitle>
+
+<h1 class="text-danger">Error.</h1>
+<h2 class="text-danger">An error occurred while processing your request.</h2>
+
+@if (ShowRequestId)
+{
+    <p>
+        <strong>Request ID:</strong> <code>@RequestId</code>
+    </p>
+}
+
+<h3>Development Mode</h3>
+<p>
+    Swapping to <strong>Development</strong> environment will display more detailed information about the error that occurred.
+</p>
+<p>
+    <strong>The Development environment shouldn't be enabled for deployed applications.</strong>
+    It can result in displaying sensitive information from exceptions to end users.
+    For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
+    and restarting the app.
+</p>
+
+@code{
+    [CascadingParameter]
+    private HttpContext? HttpContext { get; set; }
+
+    private string? RequestId { get; set; }
+    private bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
+
+    protected override void OnInitialized() =>
+        RequestId = Activity.Current?.Id ?? HttpContext?.TraceIdentifier;
+}

SchemaEditor/Components/Pages/Home.razor

@@ -0,0 +1,7 @@
+@page "/"
+
+<PageTitle>Home</PageTitle>
+
+<h1>Hello, world!</h1>
+
+Welcome to your new app.

SchemaEditor/Components/Pages/Weather.razor

@@ -0,0 +1,64 @@
+@page "/weather"
+@attribute [StreamRendering]
+
+<PageTitle>Weather</PageTitle>
+
+<h1>Weather</h1>
+
+<p>This component demonstrates showing data.</p>
+
+@if (forecasts == null)
+{
+    <p><em>Loading...</em></p>
+}
+else
+{
+    <table class="table">
+        <thead>
+            <tr>
+                <th>Date</th>
+                <th>Temp. (C)</th>
+                <th>Temp. (F)</th>
+                <th>Summary</th>
+            </tr>
+        </thead>
+        <tbody>
+            @foreach (var forecast in forecasts)
+            {
+                <tr>
+                    <td>@forecast.Date.ToShortDateString()</td>
+                    <td>@forecast.TemperatureC</td>
+                    <td>@forecast.TemperatureF</td>
+                    <td>@forecast.Summary</td>
+                </tr>
+            }
+        </tbody>
+    </table>
+}
+
+@code {
+    private WeatherForecast[]? forecasts;
+
+    protected override async Task OnInitializedAsync()
+    {
+        // Simulate asynchronous loading to demonstrate streaming rendering
+        await Task.Delay(500);
+
+        var startDate = DateOnly.FromDateTime(DateTime.Now);
+        var summaries = new[] { "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching" };
+        forecasts = Enumerable.Range(1, 5).Select(index => new WeatherForecast
+        {
+            Date = startDate.AddDays(index),
+            TemperatureC = Random.Shared.Next(-20, 55),
+            Summary = summaries[Random.Shared.Next(summaries.Length)]
+        }).ToArray();
+    }
+
+    private class WeatherForecast
+    {
+        public DateOnly Date { get; set; }
+        public int TemperatureC { get; set; }
+        public string? Summary { get; set; }
+        public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
+    }
+}

SchemaEditor/Components/Routes.razor

@@ -0,0 +1,6 @@
+<Router AppAssembly="typeof(Program).Assembly">
+    <Found Context="routeData">
+        <RouteView RouteData="routeData" DefaultLayout="typeof(Layout.MainLayout)" />
+        <FocusOnNavigate RouteData="routeData" Selector="h1" />
+    </Found>
+</Router>

SchemaEditor/Components/_Imports.razor

@@ -0,0 +1,10 @@
+@using System.Net.Http
+@using System.Net.Http.Json
+@using Microsoft.AspNetCore.Components.Forms
+@using Microsoft.AspNetCore.Components.Routing
+@using Microsoft.AspNetCore.Components.Web
+@using static Microsoft.AspNetCore.Components.Web.RenderMode
+@using Microsoft.AspNetCore.Components.Web.Virtualization
+@using Microsoft.JSInterop
+@using SchemaEditor
+@using SchemaEditor.Components

SchemaEditor/Program.cs

@@ -0,0 +1,27 @@
+using SchemaEditor.Components;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+builder.Services.AddRazorComponents()
+    .AddInteractiveServerComponents();
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (!app.Environment.IsDevelopment())
+{
+    app.UseExceptionHandler("/Error", createScopeForErrors: true);
+    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
+    app.UseHsts();
+}
+
+app.UseHttpsRedirection();
+
+app.UseStaticFiles();
+app.UseAntiforgery();
+
+app.MapRazorComponents<App>()
+    .AddInteractiveServerRenderMode();
+
+app.Run();

SchemaEditor/Properties/launchSettings.json

@@ -0,0 +1,38 @@
+{
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+    "iisSettings": {
+      "windowsAuthentication": false,
+      "anonymousAuthentication": true,
+      "iisExpress": {
+        "applicationUrl": "http://localhost:54994",
+        "sslPort": 44382
+      }
+    },
+    "profiles": {
+      "http": {
+        "commandName": "Project",
+        "dotnetRunMessages": true,
+        "launchBrowser": true,
+        "applicationUrl": "http://localhost:5020",
+        "environmentVariables": {
+          "ASPNETCORE_ENVIRONMENT": "Development"
+        }
+      },
+      "https": {
+        "commandName": "Project",
+        "dotnetRunMessages": true,
+        "launchBrowser": true,
+        "applicationUrl": "https://localhost:7070;http://localhost:5020",
+        "environmentVariables": {
+          "ASPNETCORE_ENVIRONMENT": "Development"
+        }
+      },
+      "IIS Express": {
+        "commandName": "IISExpress",
+        "launchBrowser": true,
+        "environmentVariables": {
+          "ASPNETCORE_ENVIRONMENT": "Development"
+        }
+      }
+    }
+  }

SchemaEditor/SchemaEditor.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+</Project>

SchemaEditor/appsettings.Development.json

@@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

SchemaEditor/appsettings.json

@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}

SchemaEditor/wwwroot/app.css

@@ -0,0 +1,51 @@
+html, body {
+    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
+}
+
+a, .btn-link {
+    color: #006bb7;
+}
+
+.btn-primary {
+    color: #fff;
+    background-color: #1b6ec2;
+    border-color: #1861ac;
+}
+
+.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
+  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
+}
+
+.content {
+    padding-top: 1.1rem;
+}
+
+h1:focus {
+    outline: none;
+}
+
+.valid.modified:not([type=checkbox]) {
+    outline: 1px solid #26b050;
+}
+
+.invalid {
+    outline: 1px solid #e50000;
+}
+
+.validation-message {
+    color: #e50000;
+}
+
+.blazor-error-boundary {
+    background: url(data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNTYiIGhlaWdodD0iNDkiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIG92ZXJmbG93PSJoaWRkZW4iPjxkZWZzPjxjbGlwUGF0aCBpZD0iY2xpcDAiPjxyZWN0IHg9IjIzNSIgeT0iNTEiIHdpZHRoPSI1NiIgaGVpZ2h0PSI0OSIvPjwvY2xpcFBhdGg+PC9kZWZzPjxnIGNsaXAtcGF0aD0idXJsKCNjbGlwMCkiIHRyYW5zZm9ybT0idHJhbnNsYXRlKC0yMzUgLTUxKSI+PHBhdGggZD0iTTI2My41MDYgNTFDMjY0LjcxNyA1MSAyNjUuODEzIDUxLjQ4MzcgMjY2LjYwNiA1Mi4yNjU4TDI2Ny4wNTIgNTIuNzk4NyAyNjcuNTM5IDUzLjYyODMgMjkwLjE4NSA5Mi4xODMxIDI5MC41NDUgOTIuNzk1IDI5MC42NTYgOTIuOTk2QzI5MC44NzcgOTMuNTEzIDI5MSA5NC4wODE1IDI5MSA5NC42NzgyIDI5MSA5Ny4wNjUxIDI4OS4wMzggOTkgMjg2LjYxNyA5OUwyNDAuMzgzIDk5QzIzNy45NjMgOTkgMjM2IDk3LjA2NTEgMjM2IDk0LjY3ODIgMjM2IDk0LjM3OTkgMjM2LjAzMSA5NC4wODg2IDIzNi4wODkgOTMuODA3MkwyMzYuMzM4IDkzLjAxNjIgMjM2Ljg1OCA5Mi4xMzE0IDI1OS40NzMgNTMuNjI5NCAyNTkuOTYxIDUyLjc5ODUgMjYwLjQwNyA1Mi4yNjU4QzI2MS4yIDUxLjQ4MzcgMjYyLjI5NiA1MSAyNjMuNTA2IDUxWk0yNjMuNTg2IDY2LjAxODNDMjYwLjczNyA2Ni4wMTgzIDI1OS4zMTMgNjcuMTI0NSAyNTkuMzEzIDY5LjMzNyAyNTkuMzEzIDY5LjYxMDIgMjU5LjMzMiA2OS44NjA4IDI1OS4zNzEgNzAuMDg4N0wyNjEuNzk1IDg0LjAxNjEgMjY1LjM4IDg0LjAxNjEgMjY3LjgyMSA2OS43NDc1QzI2Ny44NiA2OS43MzA5IDI2Ny44NzkgNjkuNTg3NyAyNjcuODc5IDY5LjMxNzkgMjY3Ljg3OSA2Ny4xMTgyIDI2Ni40NDggNjYuMDE4MyAyNjMuNTg2IDY2LjAxODNaTTI2My41NzYgODYuMDU0N0MyNjEuMDQ5IDg2LjA1NDcgMjU5Ljc4NiA4Ny4zMDA1IDI1OS43ODYgODkuNzkyMSAyNTkuNzg2IDkyLjI4MzcgMjYxLjA0OSA5My41Mjk1IDI2My41NzYgOTMuNTI5NSAyNjYuMTE2IDkzLjUyOTUgMjY3LjM4NyA5Mi4yODM3IDI2Ny4zODcgODkuNzkyMSAyNjcuMzg3IDg3LjMwMDUgMjY2LjExNiA4Ni4wNTQ3IDI2My41NzYgODYuMDU0N1oiIGZpbGw9IiNGRkU1MDAiIGZpbGwtcnVsZT0iZXZlbm9kZCIvPjwvZz48L3N2Zz4=) no-repeat 1rem/1.8rem, #b32121;
+    padding: 1rem 1rem 1rem 3.7rem;
+    color: white;
+}
+
+    .blazor-error-boundary::after {
+        content: "An error has occurred."
+    }
+
+.darker-border-checkbox.form-check-input {
+    border-color: #929292;
+}