Moving classes to Infrastructure proj

src/Umbraco.Infrastructure/ModelsBuilder/ModelsGenerationError.cs

@@ -0,0 +1,86 @@
+using System;
+using System.IO;
+using System.Text;
+using Microsoft.Extensions.Options;
+using Umbraco.Core.Configuration;
+using Umbraco.Core.Configuration.Models;
+using Umbraco.Core.Hosting;
+
+namespace Umbraco.Infrastructure.ModelsBuilder
+{
+    public sealed class ModelsGenerationError
+    {
+        private readonly ModelsBuilderSettings _config;
+        private readonly IHostingEnvironment _hostingEnvironment;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ModelsGenerationError"/> class.
+        /// </summary>
+        public ModelsGenerationError(IOptions<ModelsBuilderSettings> config, IHostingEnvironment hostingEnvironment)
+        {
+            _config = config.Value;
+            _hostingEnvironment = hostingEnvironment;
+        }
+
+        public void Clear()
+        {
+            var errFile = GetErrFile();
+            if (errFile == null)
+            {
+                return;
+            }
+
+            // "If the file to be deleted does not exist, no exception is thrown."
+            File.Delete(errFile);
+        }
+
+        public void Report(string message, Exception e)
+        {
+            var errFile = GetErrFile();
+            if (errFile == null)
+            {
+                return;
+            }
+
+            var sb = new StringBuilder();
+            sb.Append(message);
+            sb.Append("\r\n");
+            sb.Append(e.Message);
+            sb.Append("\r\n\r\n");
+            sb.Append(e.StackTrace);
+            sb.Append("\r\n");
+
+            File.WriteAllText(errFile, sb.ToString());
+        }
+
+        public string GetLastError()
+        {
+            var errFile = GetErrFile();
+            if (errFile == null)
+            {
+                return null;
+            }
+
+            try
+            {
+                return File.ReadAllText(errFile);
+            }
+            catch
+            {
+                // accepted
+                return null;
+            }
+        }
+
+        private string GetErrFile()
+        {
+            var modelsDirectory = _config.ModelsDirectoryAbsolute(_hostingEnvironment);
+            if (!Directory.Exists(modelsDirectory))
+            {
+                return null;
+            }
+
+            return Path.Combine(modelsDirectory, "models.err");
+        }
+    }
+}