# HG changeset patch
# User Goffi <goffi@goffi.org>
# Date 1588526894 -7200
# Node ID 92ff09cdd6ddca7f38fe228367b3c6757fc214d0
# Parent  1ec41ac1e7cffd9945b51c65f0d36407bd1fb9cc
server: gather themes data:

- the new LiberviaRootResource's `site_themes` attribute is a set of available themes for
  a site, it is set a template variable for pages.
- if `browser_meta` are available for a theme, the metadata are merged with pages root
  `_browser` data
- if python files are found in `browser_path`, they are added to be handled by brython
  task.

diff -r 1ec41ac1e7cf -r 92ff09cdd6dd libervia/server/pages.py
--- a/libervia/server/pages.py	Sun May 03 18:25:11 2020 +0200
+++ b/libervia/server/pages.py	Sun May 03 19:28:14 2020 +0200
@@ -1332,6 +1332,7 @@
 
         return self.host.renderer.render(
             self.template,
+            site_themes=self.vhost_root.site_themes,
             page_url=self.getURL(),
             media_path=f"/{C.MEDIA_DIR}",
             cache_path=session_data.cache_dir,
diff -r 1ec41ac1e7cf -r 92ff09cdd6dd libervia/server/server.py
--- a/libervia/server/server.py	Sun May 03 18:25:11 2020 +0200
+++ b/libervia/server/server.py	Sun May 03 19:28:14 2020 +0200
@@ -50,6 +50,7 @@
 from sat.tools.common import regex
 from sat.tools.common import template
 from sat.tools.common import uri as common_uri
+from sat.tools.common.utils import recursive_update
 import libervia
 from libervia.server import websockets
 from libervia.server.pages import LiberviaPage
@@ -184,10 +185,36 @@
         self.host_name = host_name
         self.site_name = site_name
         self.site_path = Path(site_path)
+        self.site_themes = set()
         self.named_pages = {}
         self.browser_modules = {}
         # template dynamic data used in all pages
         self.dyn_data_common = {"scripts": []}
+        for theme, data in host.renderer.getThemesData(site_name).items():
+            # we check themes for browser metadata, and merge them here if found
+            self.site_themes.add(theme)
+            browser_meta = data.get('browser_meta')
+            if browser_meta is not None:
+                log.debug(f"merging browser metadata from theme {theme}: {browser_meta}")
+                recursive_update(self.browser_modules, browser_meta)
+            browser_path = data.get('browser_path')
+            if browser_path is not None:
+                self.browser_modules.setdefault('themes_browser_paths', set()).add(
+                    browser_path)
+                try:
+                    next(browser_path.glob("*.py"))
+                except StopIteration:
+                    pass
+                else:
+                    log.debug(f"found brython script(s) for theme {theme}")
+                    self.browser_modules.setdefault('brython', []).append(
+                        {
+                            "path": browser_path,
+                            "url_hash": None,
+                            "url_prefix": f"__t_{theme}"
+                        }
+                    )
+
         self.uri_callbacks = {}
         self.pages_redirects = {}
         self.cached_urls = {}