add jenkins snippet

README.md

@@ -40,3 +40,13 @@ Creates a new nodejs project
 ```sh
 snippeteer node [name]
 ```
+
+### Jenkins
+
+Adds files necessary for jenkins 
+
+optionally with a js script for npm modules by adding 'node' as argument
+
+```sh
+snippeteer jenkins [node]
+```

snippets/jenkins/index.js

@@ -0,0 +1,56 @@
+/* eslint-disable no-sync */
+/* eslint-disable no-console */
+
+const fs = require ('fs-extra');
+const path = require ('path');
+
+/**
+ * copies the full template to a new folder named after arg[0]
+ *
+ * @param {string} folder folder to run in
+ * @param {Array} args function arguments
+ */
+function run (folder, args) {
+  const template = path.join (
+    __dirname,
+    'template',
+    args.length === 1 && (/^node$/ui).test
+      ? 'node'
+      : 'general'
+  );
+
+  for (const f of fs.readdirSync (template))
+    fs.copy (
+      path.join (template, f),
+      path.join (folder, f),
+      { filter: (src, dest) => !fs.existsSync (dest) }
+    );
+}
+
+/**
+ * checks if the arguments meet the requirements
+ *
+ * @param {string} folder folder to run in
+ * @returns {boolean} true if arguments match requirements
+ */
+function assert (folder) {
+  const tests = [
+    {
+      f:      () => (typeof folder === 'string'),
+      reason: 'cwd is not a folder (internal error)'
+    },
+    {
+      f:      () => (fs.existsSync (folder)),
+      reason: 'cwd does not exist (internal error)'
+    }
+  ];
+  for (const test of tests)
+    if (!test.f ()) {
+      console.log (test.reason);
+      return false;
+    }
+
+  return true;
+}
+
+module.exports = { run, assert };

snippets/jenkins/template/general/Jenkinsfile

@@ -0,0 +1,39 @@
+pipeline {
+    agent any
+
+    environment {
+        VERSION = VersionNumber([
+            versionNumberString: 
+                '${BUILDS_ALL_TIME}',
+            versionPrefix: '1.0.',
+            worstResultForIncrement: 'SUCCESS'
+        ])
+        publish = 0
+    }
+
+    stages {
+        stage('Setup') {
+            steps {
+                echo 'Setting up test environment'
+                sh 'echo setup'
+                script {
+                    currentBuild.displayName = env.VERSION
+                }
+            }
+        }
+    }
+    post {
+        success {
+            script {
+                publish = sh script: "git log -1 | grep '\\[no publish\\]'", returnStatus: true
+                if (publish != 0) {
+                  echo 'Deploying'
+                  sh 'echo deploy'
+                } else {
+                  echo 'Build successful, Commit not marked for deploying'
+                  currentBuild.result = "UNSTABLE"
+                }
+            }
+        }
+    }
+}

snippets/jenkins/template/node/Jenkinsfile

@@ -0,0 +1,40 @@
+pipeline {
+    agent any
+
+    environment {
+        VERSION = VersionNumber([
+            versionNumberString: 
+                '${BUILDS_ALL_TIME}',
+            versionPrefix: '1.0.',
+            worstResultForIncrement: 'SUCCESS'
+        ])
+        publish = 0
+    }
+
+    stages {
+        stage('Setup') {
+            steps {
+                echo 'Setting up test environment'
+                sh 'npm ci'
+                sh 'nodejs jenkins.js ${VERSION}'
+                script {
+                    currentBuild.displayName = env.VERSION
+                }
+            }
+        }
+    }
+    post {
+        success {
+            script {
+                publish = sh script: "git log -1 | grep '\\[no publish\\]'", returnStatus: true
+                if (publish != 0) {
+                  echo 'Deploying'
+                  sh 'npm publish'   
+                } else {
+                  echo 'Build successful, Commit not marked for deploying'
+                  currentBuild.result = "UNSTABLE"
+                }
+            }
+        }
+    }
+}

snippets/jenkins/template/node/jenkins.js

@@ -0,0 +1,7 @@
+const fs = require ('fs');
+
+const pkg = JSON.parse (fs.readFileSync ('package.json', 'utf-8'));
+[
+  ,, pkg.version
+] = process.argv;
+fs.writeFileSync ('package.json', JSON.stringify (pkg, null, 2));