re-add plugin tags

src/backend/InvenTree/plugin/templatetags/plugin_extras.py

@@ -0,0 +1,120 @@
+"""This module provides template tags for handling plugins."""
+
+from django import template
+from django.conf import settings as djangosettings
+from django.templatetags.static import static
+from django.urls import reverse
+
+from common.notifications import storage
+from common.settings import get_global_setting
+from plugin.registry import registry
+
+register = template.Library()
+
+
+@register.simple_tag()
+def plugin_list(*args, **kwargs):
+    """List of all installed plugins."""
+    return registry.plugins
+
+
+@register.simple_tag()
+def inactive_plugin_list(*args, **kwargs):
+    """List of all inactive plugins."""
+    return registry.plugins_inactive
+
+
+@register.simple_tag()
+def plugin_settings(plugin, *args, **kwargs):
+    """List of all settings for the plugin."""
+    return registry.mixins_settings.get(plugin)
+
+
+@register.simple_tag(takes_context=True)
+def plugin_settings_content(context, plugin, *args, **kwargs):
+    """Get the settings content for the plugin."""
+    plg = registry.get_plugin(plugin)
+    if hasattr(plg, 'get_settings_content'):
+        return plg.get_settings_content(context.request)
+    return None
+
+
+@register.simple_tag()
+def mixin_enabled(plugin, key, *args, **kwargs):
+    """Is the mixin registered and configured in the plugin?"""
+    return plugin.mixin_enabled(key)
+
+
+@register.simple_tag()
+def mixin_available(mixin, *args, **kwargs):
+    """Returns True if there is at least one active plugin which supports the provided mixin."""
+    return len(registry.with_mixin(mixin)) > 0
+
+
+@register.simple_tag()
+def navigation_enabled(*args, **kwargs):
+    """Is plugin navigation enabled?"""
+    if djangosettings.PLUGIN_TESTING:
+        return True
+    return get_global_setting('ENABLE_PLUGINS_NAVIGATION')  # pragma: no cover
+
+
+@register.simple_tag()
+def safe_url(view_name, *args, **kwargs):
+    """Safe lookup fnc for URLs.
+
+    Returns None if not found
+    """
+    try:
+        return reverse(view_name, args=args, kwargs=kwargs)
+    except Exception:
+        return None
+
+
+@register.simple_tag()
+def plugin_errors(*args, **kwargs):
+    """All plugin errors in the current session."""
+    return registry.errors
+
+
+@register.simple_tag(takes_context=True)
+def notification_settings_list(context, *args, **kwargs):
+    """List of all user notification settings."""
+    return storage.get_usersettings(user=context.get('user', None))
+
+
+@register.simple_tag(takes_context=True)
+def notification_list(context, *args, **kwargs):
+    """List of all notification methods."""
+    return [
+        {
+            'slug': a.METHOD_NAME,
+            'icon': a.METHOD_ICON,
+            'setting': a.GLOBAL_SETTING,
+            'plugin': a.plugin,
+            'description': a.__doc__,
+            'name': a.__name__,
+        }
+        for a in storage.methods
+    ]
+
+
+@register.simple_tag(takes_context=True)
+def plugin_static(context, file: str, **kwargs):
+    """Return the URL for a static file within a plugin.
+
+    Arguments:
+        file: The path to the file within the plugin static directory
+
+    Keyword Arguments:
+        plugin: The plugin slug (optional, will be inferred from the context if not provided)
+
+    """
+    plugin = context.get('plugin', None)
+
+    plugin = plugin.slug if plugin else kwargs.get('plugin')
+
+    if not plugin:
+        return file
+
+    return static(f'plugins/{plugin}/{file}')