Set PackageValidationBaselineVersion

Set the correct `<PackageValidationBaselineVersion>` value when generating the project file based on the current latest release in NuGet.org.

Author: martincostello

generators/app/index.js

@@ -1,5 +1,7 @@
 'use strict';
+const fetch = require('cross-fetch');
 const Generator = require('yeoman-generator');
+const queryString = require('query-string');
 const yosay = require('yosay');
 
 module.exports = class extends Generator {
@@ -49,6 +51,8 @@ module.exports = class extends Generator {
     this.templateData.tokenendpoint = answers.tokenendpoint;
     this.templateData.userinformationendpoint = answers.userinformationendpoint;
 
+    this.templateData.currentVersion = await this.getCurrentVersion();
+
     this.name = answers.name;
     this.applicationName = 'AspNet.Security.OAuth.' + answers.name;
   }
@@ -60,4 +64,55 @@ module.exports = class extends Generator {
     this.fs.copyTpl(this.templatePath('AuthenticationHandler.cs'), this.applicationName + '/' + this.name + 'AuthenticationHandler.cs', this.templateData)
     this.fs.copyTpl(this.templatePath('AuthenticationOptions.cs'), this.applicationName + '/' + this.name + 'AuthenticationOptions.cs', this.templateData)
   }
+
+  async getCurrentVersion() {
+
+    let response = await fetch('https://api.nuget.org/v3/index.json');
+
+    if (!response.ok) {
+      throw new Error(`Failed to query NuGet service index. HTTP status code: ${response.status}.`);
+    }
+
+    const serviceIndex = await response.json();
+    const baseAddress = serviceIndex.resources.find(resource => resource['@type'] === 'SearchQueryService/3.5.0')['@id'];
+
+    if (!baseAddress) {
+      throw new Error('Failed to determine the base address for the NuGet search query service.');
+    }
+
+    const query = queryString.stringify({
+      prerelease: false,
+      q: 'PackageId:AspNet.Security.OAuth.GitHub',
+      semVerLevel: '2.0.0',
+      take: 1
+    });
+
+    const searchUrl = `${baseAddress}?${query}`;
+    response = await fetch(searchUrl);
+
+    if (!response.ok) {
+      throw new Error(`Failed to search for NuGet package from '${searchUrl}'. HTTP status code: ${response.status}.`);
+    }
+
+    const searchResult = await response.json();
+
+    let latestVersion = null;
+
+    if (searchResult.data && searchResult.data.length > 0) {
+      latestVersion = searchResult.data[0].version;
+    }
+
+    if (!latestVersion) {
+      throw new Error('Failed to determine the latest version of the OAuth providers.');
+    }
+
+    const dot = '.';
+    const versionParts = latestVersion.split(dot);
+
+    // Increment the build number by one for the release that
+    // would be the first one including this new provider.
+    versionParts[2] = parseInt(versionParts[2], 10) + 1;
+
+    return versionParts.join(dot);
+  }
 };

generators/app/templates/Project.csproj

@@ -1,10 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
+    <PackageValidationBaselineVersion><%= currentVersion %></PackageValidationBaselineVersion>
     <TargetFrameworks>$(DefaultNetCoreTargetFramework)</TargetFrameworks>
   </PropertyGroup>
 
-  <!-- This property group required until the new provider is first published to NuGet.org -->
+  <!-- This property group is required until the new provider is first published to NuGet.org -->
   <PropertyGroup>
     <DisablePackageBaselineValidation>true</DisablePackageBaselineValidation>
   </PropertyGroup>

package-lock.json

@@ -26,6 +26,8 @@
     "oauth"
   ],
   "dependencies": {
+    "cross-fetch": "^3.1.5",
+    "query-string": "^7.1.1",
     "yosay": "^2.0.2",
     "yeoman-generator": "^5.7.0"
   },

package.json

@@ -1,11 +1,12 @@
 'use strict';
 
-const path = require('path');
 const assert = require('yeoman-assert');
 const helpers = require('yeoman-test');
+const path = require('path');
 
 describe('aspnet-oauth:app', () => {
-  before(async () => {
+  before(async function () {
+    this.timeout(10000);
     return await helpers.run(path.join(__dirname, '../generators/app'))
       .withOptions({ skipInstall: true })
       .withPrompts({
@@ -44,6 +45,12 @@ describe('aspnet-oauth:app', () => {
       /<PackageTags>foo;aspnetcore;authentication;oauth;security<\/PackageTags>/
     );
   });
+  it('sets the package baseline version', () => {
+    assert.fileContent(
+      'AspNet.Security.OAuth.Foo/AspNet.Security.OAuth.Foo.csproj',
+      /<PackageValidationBaselineVersion>[0-9]+\.[0-9]+\.[0-9]+<\/PackageValidationBaselineVersion>/
+    );
+  });
   it('sets the defaults class name', () => {
     assert.fileContent(
       'AspNet.Security.OAuth.Foo/FooAuthenticationDefaults.cs',