Split dynamic javascript files into two separate directories

- One gets translated and is served statically
- One does not get translated and is served dynamically
- Add CI step

ci/check_js_templates.py

@@ -0,0 +1,121 @@
+"""
+Test that the "translated" javascript files to not contain template tags
+which need to be determined at "run time".
+
+This is because the "translated" javascript files are compiled into the "static" directory.
+
+They should only contain template tags that render static information.
+"""
+
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+import sys
+import re
+import os
+import pathlib
+
+here = os.path.abspath(os.path.dirname(__file__))
+template_dir = os.path.abspath(os.path.join(here, '..', 'InvenTree', 'templates'))
+
+# We only care about the 'translated' files
+js_i18n_dir = os.path.join(template_dir, 'js', 'translated')
+js_dynamic_dir = os.path.join(template_dir, 'js', 'dynamic')
+
+errors = 0
+
+print("=================================")
+print("Checking static javascript files:")
+print("=================================")
+
+def check_invalid_tag(data):
+
+    pattern = r"{%(\w+)"
+
+    err_count = 0
+
+    for idx, line in enumerate(data):
+
+        results = re.findall(pattern, line)
+
+        for result in results:
+            err_count += 1
+
+            print(f" - Error on line {idx+1}: %{{{result[0]}")
+
+    return err_count
+
+def check_prohibited_tags(data):
+
+    allowed_tags = [
+        'if',
+        'elif',
+        'else',
+        'endif',
+        'for',
+        'endfor',
+        'trans',
+        'load',
+        'include',
+        'url',
+    ]
+
+    pattern = r"{% (\w+)\s"
+
+    err_count = 0
+
+    has_trans = False
+
+    for idx, line in enumerate(data):
+
+        for tag in re.findall(pattern, line):
+
+            if tag not in allowed_tags:
+                print(f" > Line {idx+1} - '{tag}'")
+                err_count += 1
+
+            if tag == 'trans':
+                has_trans = True
+
+    if not has_trans:
+        print(f" > missing 'trans' tag")
+        err_count += 1
+
+    return err_count
+
+
+for filename in pathlib.Path(js_i18n_dir).rglob('*.js'):
+
+    print(f"Checking file 'translated/{os.path.basename(filename)}':")
+
+    with open(filename, 'r') as js_file:
+        data = js_file.readlines()
+
+    errors += check_invalid_tag(data)
+    errors += check_prohibited_tags(data)
+
+for filename in pathlib.Path(js_dynamic_dir).rglob('*.js'):
+
+    print(f"Checking file 'dynamic/{os.path.basename(filename)}':")
+
+    # Check that the 'dynamic' files do not contains any translated strings
+    with open(filename, 'r') as js_file:
+        data = js_file.readlines()
+
+    pattern = r'{% trans '
+    
+    err_count = 0
+
+    for idx, line in enumerate(data):
+
+        results = re.findall(pattern, line)
+
+        if len(results) > 0:
+            errors += 1
+
+            print(f" > {{% trans %}} tag found at line {idx + 1}")
+
+if errors > 0:
+    print(f"Found {errors} incorrect template tags")
+
+sys.exit(errors)