Add option to print build report

InvenTree/build/templates/build/build_base.html

@@ -45,8 +45,17 @@ src="{% static 'img/blank_image.png' %}"
 </h3>
 <hr>
 <p>{{ build.title }}</p>
-<div class='btn-row'>
-    <div class='btn-group action-buttons'>
+
+<div class='btn-group action-buttons' role='group'>
+    <!-- Printing options -->
+    <div class='btn-group'>
+        <button id='print-options' title='{% trans "Print actions" %}' class='btn btn-default dropdown-toggle' type='button' data-toggle='dropdown'>
+            <span class='fas fa-print'></span> <span class='caret'></span>
+        </button>
+        <ul class='dropdown-menu' role='menu'>
+            <li><a href='#' id='print-build-report'><span class='fas fa-file-pdf'></span> {% trans "Print Build Order" %}</a></li>
+        </ul>
+    </div>
     {% if roles.build.change %}
     <button type='button' class='btn btn-default' id='build-edit' title='{% trans "Edit Build" %}'>
         <span class='fas fa-edit icon-green'/>
@@ -66,7 +75,6 @@ src="{% static 'img/blank_image.png' %}"
     </button>
     {% endif %}
 </div>
-</div>
 {% endblock %}
 
 {% block page_details %}
@@ -151,6 +159,10 @@ src="{% static 'img/blank_image.png' %}"
         );
     });
 
+    $('#print-build-report').click(function() {
+        printBuildReports([{{ build.pk }}]);
+    });
+
     $("#build-delete").on('click', function() {
         launchModalForm(
             "{% url 'build-delete' build.id %}",

InvenTree/templates/js/report.js

@@ -142,6 +142,59 @@ function printTestReports(items, options={}) {
 }
 
 
+function printBuildReports(builds, options={}) {
+    /**
+     * Print Build report for the provided build(s)
+     */
+
+    if (builds.length == 0) {
+        showAlertDialog(
+            '{% trans "Select Builds" %}',
+            '{% trans "Build(s) must be selected before printing reports" %}',
+        );
+
+        return;
+    }
+
+    inventreeGet(
+        '{% url "api-build-report-list" %}',
+        {
+            enabled: true,
+            builds: builds,
+        },
+        {
+            success: function(response) {
+                if (response.length == 0) {
+                    showAlertDialog(
+                        '{% trans "No Reports Found" %}',
+                        '{% trans "No report templates found which match selected build(s)" %}'
+                    );
+
+                    return;
+                }
+
+                // Select which report to print
+                selectReport(
+                    response,
+                    builds,
+                    {
+                        success: function(pk) {
+                            var href = `/api/report/build/${pk}/print/?`;
+
+                            builds.forEach(function(build) {
+                                href += `builds[]=${build}&`;
+                            });
+
+                            window.location.href = href;
+                        }
+                    }
+                )
+            }
+        }
+    )
+}
+
+
 function printBomReports(parts, options={}) {
     /**
      * Print BOM reports for the provided part(s)