loresoft#560 Add option to delete unused files

Author: Arnaud Boussaer

src/EntityFrameworkCore.Generator.Core/CodeGenerator.cs

@@ -90,6 +90,9 @@ private void GenerateQueryExtensions(EntityContext entityContext)
 
     private void GenerateMappingClasses(EntityContext entityContext)
     {
+        if (Options.Data.Mapping.DeleteUnusedFiles)
+            DeleteUnusedFiles(Options.Data.Mapping.Directory, entityContext.Entities.Select(e => e.MappingClass).ToHashSet(), "mapping");
+
         foreach (var entity in entityContext.Entities)
         {
             Options.Variables.Set(entity);
@@ -111,6 +114,9 @@ private void GenerateMappingClasses(EntityContext entityContext)
 
     private void GenerateEntityClasses(EntityContext entityContext)
     {
+        if (Options.Data.Entity.DeleteUnusedFiles)
+            DeleteUnusedFiles(Options.Data.Entity.Directory, entityContext.Entities.Select(e => e.EntityClass).ToHashSet(), "entity");
+
         foreach (var entity in entityContext.Entities)
         {
             Options.Variables.Set(entity);
@@ -130,6 +136,20 @@ private void GenerateEntityClasses(EntityContext entityContext)
         }
     }
 
+    private void DeleteUnusedFiles(string directory, HashSet<string> fileNamesToBeGenerated, string fileType)
+    {
+        var existingFiles = Directory.EnumerateFiles(directory, "*.cs");
+        foreach (var existingFile in existingFiles)
+        {
+            var fileName = Path.GetFileNameWithoutExtension(existingFile);
+            if (!fileNamesToBeGenerated.Contains(fileName))
+            {
+                _logger.LogInformation("Deleting {fileType} class: {file}.cs", fileType, fileName);
+                File.Delete(existingFile);
+            }
+        }
+    }
+
     private void GenerateDataContext(EntityContext entityContext)
     {
 

src/EntityFrameworkCore.Generator.Core/OptionMapper.cs

@@ -145,6 +145,7 @@ private static void MapMapping(MappingClassOptions option, MappingClass mapping)
 
         option.Temporal = mapping.Temporal;
         option.RowVersion = mapping.RowVersion;
+        option.DeleteUnusedFiles = mapping.DeleteUnusedFiles;
     }
 
     private static void MapEntity(EntityClassOptions option, EntityClass entity)
@@ -154,6 +155,7 @@ private static void MapEntity(EntityClassOptions option, EntityClass entity)
         option.EntityNaming = entity.EntityNaming;
         option.RelationshipNaming = entity.RelationshipNaming;
         option.PrefixWithSchemaName = entity.PrefixWithSchemaName;
+        option.DeleteUnusedFiles = entity.DeleteUnusedFiles;
 
         MapSelection(option.Renaming, entity.Renaming);
     }

src/EntityFrameworkCore.Generator.Core/Options/EntityClassOptions.cs

@@ -55,4 +55,10 @@ public EntityClassOptions(VariableDictionary variables, string prefix)
     /// The renaming expressions.
     /// </value>
     public SelectionOptions Renaming { get; }
+
+    /// <summary>
+    /// If true, files without a corresponding database table will be removed in the folder
+    /// </summary>
+    [DefaultValue(false)]
+    public bool DeleteUnusedFiles { get; set; }
 }

src/EntityFrameworkCore.Generator.Core/Options/MappingClassOptions.cs

@@ -38,4 +38,9 @@ public MappingClassOptions(VariableDictionary variables, string prefix)
     [DefaultValue(RowVersionMapping.ByteArray)]
     public RowVersionMapping RowVersion { get; set; } = RowVersionMapping.ByteArray;
 
+    /// <summary>
+    /// If true, files without a corresponding database table will be removed in the folder
+    /// </summary>
+    [DefaultValue(false)]
+    public bool DeleteUnusedFiles { get; set; }
 }

src/EntityFrameworkCore.Generator.Core/Serialization/EntityClass.cs

@@ -54,4 +54,10 @@ public EntityClass()
     /// The renaming expressions.
     /// </value>
     public SelectionModel Renaming { get; set; }
+
+    /// <summary>
+    /// If true, files without a corresponding database table will be removed in the folder
+    /// </summary>
+    [DefaultValue(false)]
+    public bool DeleteUnusedFiles { get; set; }
 }

src/EntityFrameworkCore.Generator.Core/Serialization/MappingClass.cs

@@ -38,4 +38,10 @@ public MappingClass()
     [DefaultValue(RowVersionMapping.ByteArray)]
     public RowVersionMapping RowVersion { get; set; } = RowVersionMapping.ByteArray;
 
+    /// <summary>
+    /// If true, files without a corresponding database table will be removed in the folder
+    /// </summary>
+    [DefaultValue(false)]
+    public bool DeleteUnusedFiles { get; set; }
+
 }

test/EntityFrameworkCore.Generator.Core.Tests/Options/full.yaml

@@ -34,6 +34,7 @@ data:
     relationshipNaming: Plural
     document: false
     prefixWithSchemaName: false
+    deleteUnusedFiles: false
     renaming:
       entities:
         - ^(sp|tbl|udf|vw)_
@@ -43,6 +44,7 @@ data:
     namespace: '{Project.Namespace}.Data.Mapping'   
     directory: '{Project.Directory}\Data\Mapping'   
     document: false
+    deleteUnusedFiles: false
   query:
     generate: true          
     indexPrefix: By