Add Moustache Template

package.json

@@ -106,6 +106,7 @@
     "loglevel-message-prefix": "^3.0.0",
     "moment": "^2.22.2",
     "moment-timezone": "^0.5.21",
+    "mustache": "^2.3.2",
     "node-forge": "^0.7.5",
     "node-md6": "^0.1.0",
     "notepack.io": "^2.1.3",

src/core/config/Categories.json

@@ -342,7 +342,8 @@
             "Remove EXIF",
             "Extract EXIF",
             "Numberwang",
-            "XKCD Random Number"
+            "XKCD Random Number",
+            "Render Moustache"
         ]
     },
     {

src/core/operations/RenderMoustache.mjs

@@ -0,0 +1,49 @@
+/**
+ * @author gchq77703 []
+ * @copyright Crown Copyright 2018
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation";
+import Moustache from "mustache";
+
+/**
+ * Render Moustache operation
+ */
+class RenderMoustache extends Operation {
+
+    /**
+     * Render Moustache constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "Render Moustache";
+        this.module = "Default";
+        this.description = "Uses a provided Moustache template in order to render a JSON value.";
+        this.infoURL = "https://mustache.github.io/mustache.5.html";
+        this.inputType = "JSON";
+        this.outputType = "html";
+        this.args = [
+            {
+                name: "Template",
+                type: "text",
+                value: "Hello {{name}}."
+            },
+        ];
+    }
+
+    /**
+     * @param {JSON} input
+     * @param {Object[]} args
+     * @returns {html}
+     */
+    run(input, args) {
+        const [template] = args;
+
+        return Moustache.render(template, input)
+    }
+
+}
+
+export default RenderMoustache;

test/index.mjs

@@ -64,6 +64,7 @@ import "./tests/operations/SetUnion";
 import "./tests/operations/SymmetricDifference";
 import "./tests/operations/TranslateDateTimeFormat";
 import "./tests/operations/Magic";
+import "./tests/operations/RenderMoustache"
 
 let allTestsPassing = true;
 const testStatusCounts = {

test/tests/operations/RenderMoustache.mjs

@@ -0,0 +1,47 @@
+/**
+ * Render Moustache tests.
+ *
+ * @author gchq77703 []
+ *
+ * @copyright Crown Copyright 2018
+ * @license Apache-2.0
+ */
+import TestRegister from "../../TestRegister";
+
+
+TestRegister.addTests([
+    {
+        name: "Render Moustache",
+        input: `{
+    "name": "Dave",
+    "value": "£50,000",
+    "in_england": true,
+    "taxed_value": "£40,000"
+}`,
+        expectedOutput: `Hello Dave
+You have just won £50,000!
+Well, £40,000 after taxes.
+`,
+        recipeConfig: [
+            {
+                op: "Render Moustache",
+                args: [`Hello {{name}}
+You have just won {{value}}!
+{{#in_england}}
+Well, {{taxed_value}} after taxes.
+{{/in_england}}`]
+            }
+        ],
+    },
+    {
+        name: "Render Moustache",
+        input: `{}`,
+        expectedOutput: `Hello .`,
+        recipeConfig: [
+            {
+                op: "Render Moustache",
+                args: [`Hello {{name}}.`]
+            }
+        ],
+    },
+]);