TINKERPOP-2085 Remove dependency on mono for docfx (#2840)

---------

Co-authored-by: Stephen Mallette <[email protected]>

Author: Cole-Greer

gremlin-dotnet/src/.config/dotnet-tools.json

@@ -0,0 +1,12 @@
+{
+  "version": 1,
+  "isRoot": true,
+  "tools": {
+    "docfx": {
+      "version": "2.77.0",
+      "commands": [
+        "docfx"
+      ]
+    }
+  }
+}

gremlin-dotnet/src/.gitignore

@@ -1,3 +1 @@
-/docfx
-docfx.zip
 /_site

gremlin-dotnet/src/docfx.json

@@ -3,7 +3,7 @@
     {
       "src": [
         {
-          "files": [ "**/*.cs" ],
+          "files": [ "**/*.csproj" ],
           "exclude": [ "**/bin/**", "**/obj/**" ],
           "src": "Gremlin.Net"
         }

gremlin-dotnet/src/pom.xml

@@ -27,7 +27,7 @@ limitations under the License.
     <name>Apache TinkerPop :: Gremlin.Net - Source</name>
     <packaging>${packaging.type}</packaging>
     <properties>
-        <nugetVersion>4.9.2</nugetVersion>
+        <nugetVersion>6.11.1</nugetVersion>
         <nugetExe>nuget-${nugetVersion}.exe</nugetExe>
     </properties>
 
@@ -155,44 +155,13 @@ limitations under the License.
                                 <configuration>
                                     <target>
                                         <taskdef resource="net/sf/antcontrib/antcontrib.properties" />
-                                        <if>
-                                            <!-- docfx sadly requires mono and nuget at this time:
-                                                 1. https://github.com/dotnet/docfx/issues/3389 (nuget required for a dll not in mono
-                                                 2. https://github.com/dotnet/docfx/issues/718#issuecomment-256700598 (mono workaround) -->
-                                            <and>
-                                                <available file="mono" filepath="${env.PATH}"/>
-                                                <available file="${nugetExe}"/>
-                                            </and>
-                                            <then>
-                                                <if>
-                                                    <available file="docfx/docfx.exe"/>
-                                                    <then>
-                                                        <echo>docfx already downloaded.</echo>
-                                                    </then>
-
-                                                    <else>
-                                                        <exec executable="wget" failonerror="true">
-                                                            <arg line="https://github.com/dotnet/docfx/releases/download/v2.58/docfx.zip"/>
-                                                        </exec>
-                                                        <mkdir dir="docfx"/>
-                                                        <exec executable="unzip" failonerror="true">
-                                                            <arg line="docfx.zip -d docfx"/>
-                                                        </exec>
-                                                        <delete file="docfx.zip"/>
-                                                        <exec executable="mono" failonerror="true">
-                                                            <arg line="${nugetExe} install -OutputDirectory docfx SQLitePCLRaw.core -ExcludeVersion"/>
-                                                        </exec>
-                                                    </else>
-                                                </if>
-                                                <exec executable="mono" failonerror="true">
-                                                    <arg line="docfx/docfx.exe"/>
-                                                </exec>
-                                            </then>
-                                            <else>
-                                                <echo>Skipping docfx generation as mono and nuget are required.</echo>
-                                                <echo>nuget must be installed as it would if doing a .NET deployment - see the glv-dotnet-deploy Maven profile for more information.</echo>
-                                            </else>
-                                        </if>
+                                        <!-- update docfx if necessary -->
+                                        <exec executable="dotnet" failonerror="true">
+                                            <arg line="dotnet tool restore"/>
+                                        </exec>
+                                        <exec executable="dotnet" failonerror="true">
+                                            <arg line="docfx docfx.json"/>
+                                        </exec>
                                     </target>
                                 </configuration>
                             </execution>