feat/flask: autogenerate languages for dropdown from locale files

app.py

@@ -12,12 +12,15 @@ from flask import (
     url_for,
 )
 
+
 cp = ConfigParser()
 app = Flask(__name__)
 
 
 def load_all_locales():
-    locales = {}
+
+    locales_list = []
+    locales_dict = {}
     locales_dir  = "locales"
 
     for filename in listdir(locales_dir):
@@ -26,12 +29,17 @@ def load_all_locales():
             cp = ConfigParser()
             with open(path.join(locales_dir, filename), encoding="utf-8") as f:
                 cp.read_file(f)
-            locales[lang] = {section: dict(cp[section]) for section in cp.sections()}
+            locales_dict[lang] = {section: dict(cp[section]) for section in cp.sections()}
 
-    return locales
+    for code, data in locales_dict.items():
+        full_name = data.get("title", {}).get("language", code)
+        locales_list.append({"code": code, "name": full_name})
+
+    print(locales_list)
+    return locales_list, locales_dict
 
 
-locales = load_all_locales()
+locales_list, locales_dict = load_all_locales()
 
 
 @app.route("/favicon.ico")
@@ -51,12 +59,13 @@ def home():
 @app.route("/<lang>")
 def index(lang):
 
-    if lang not in locales:
+    if lang not in locales_dict:
         abort(404)
 
     return render_template(
         f"{lang}.html",
-        locale=locales[lang],
+        loc_list = locales_list,
+        locale   = locales_dict[lang],
         lang     = lang,
         year     = date.today().year,
         current  = request.endpoint,
@@ -66,12 +75,13 @@ def index(lang):
 @app.route("/<lang>/download")
 def download_page(lang):
 
-    if lang not in locales:
+    if lang not in locales_dict:
         abort(404)
 
     return render_template(
         "tmpl/download.htm",
-        locale=locales[lang],
+        loc_list = locales_list,
+        locale   = locales_dict[lang],
         lang     = lang,
         year     = date.today().year,
         current  = request.endpoint,

templates/tmpl/_lang-dropdown.htm

@@ -1,23 +1,26 @@
 <div id="lang-dropdown">
     <div>
-    {%- for l, lang in (
+    {%- for lang_item in loc_list %}
-    ("en", "English"),
+        {% set lang_code = lang_item.code %}
-    ("ru", "Русский"),
+        {% set lang_name = lang_item.name %}
-    ("es", "Español"),
+        {%- if request.view_args["lang"] == lang_code %}
-    ("fr", "Français"),
-    ("de", "Deutsch"),
-    ("it", "Italiano"),
-    ("nl", "Nederlands")
-    ) %}
-    {%- if request.view_args['lang'] == l %}
             <font bg=#FF9800>
-            <a class='a-sel' href="{{ url_for(request.url_rule.endpoint, lang = l) }}">
+                <a class="a-sel" href="{{ url_for(request.url_rule.endpoint, lang=lang_code) }}">
-                <img src="{{ url_for('static', filename='img/flags/%s.png' % l) }}" alt='{{ l }}'/>
+                    <img 
-                {{ lang }}
+                        src="{{ url_for('static', filename='img/flags/%s.png' % lang_code) }}" 
+                        alt="{{ lang_code }}"
+                    />
+                    {{ lang_name }}
                 </a>
             </font>
         {%- else %}
-        <a href="{{ url_for(request.url_rule.endpoint, lang = l) }}"><img src="{{ url_for('static', filename='img/flags/%s.png' % l) }}" alt='de'/>{{ lang }}</a>
+            <a href="{{ url_for(request.url_rule.endpoint, lang=lang_code) }}">
+                <img 
+                    src="{{ url_for('static', filename='img/flags/%s.png' % lang_code) }}" 
+                    alt="{{ lang_code }}"
+                />
+                {{ lang_name }}
+            </a>
         {%- endif %}
     {%- endfor %}
     </div>