flights: full CONFIG.flights parameterization (altitude, count, speed, holds, destination weights, contrail chance/alt/life/width) + curved random-destination routing

build.py

@@ -0,0 +1,102 @@
+#!/usr/bin/env python3
+"""
+Build a single self-contained HTML file from the source files.
+
+Usage:
+    python3 build.py [output.html]
+
+If output is not given, defaults to 'background-standalone.html'.
+
+What gets inlined:
+  - config.js, i18n.js                       (plain <script> swap)
+  - vendor/suncalc.js, vendor/clouds3d.js    (plain <script> swap)
+  - vendor/stars.json                        (window.__starsData)
+  - every theme CSS referenced by window.THEMES
+                                             (window.__inlineThemeCss,
+                                              so theme switching works
+                                              without any files)
+
+The result needs NO sibling files. Note that runtime DATA is still
+fetched when the page loads: basemap/elevation tiles (via the nginx
+CORS proxies of the Docker image), Overpass road + place data and the
+Open-Meteo weather API. Serve the standalone file from the same nginx
+(or a warm IndexedDB cache = fully offline) for the full experience;
+opened via file:// it still runs sky, clouds and the whole UI, just
+without the textured ground.
+"""
+
+import json
+import os
+import re
+import sys
+
+ROOT = os.path.dirname(os.path.abspath(__file__))
+
+
+def read(path):
+    with open(os.path.join(ROOT, path), 'r', encoding='utf-8') as f:
+        return f.read()
+
+
+def guard(s):
+    # a literal </script> inside an inline block would end it early
+    return s.replace('</', '<\\/')
+
+
+def inline_script(html, tag, body):
+    old = '<script src="%s"></script>' % tag
+    new = '<script>\n%s\n</script>' % body
+    if old not in html:
+        raise SystemExit('build.py: expected tag not found: ' + tag)
+    return html.replace(old, new, 1)
+
+
+def parse_themes(config_src):
+    m = re.search(r'window\.THEMES\s*=\s*\{(.*?)\}', config_src, re.S)
+    if not m:
+        raise SystemExit('build.py: window.THEMES not found in config.js')
+    return dict(re.findall(r"'([^']+)'\s*:\s*'([^']+\.css)'", m.group(1)))
+
+
+def main():
+    out = sys.argv[1] if len(sys.argv) > 1 else 'background-standalone.html'
+    html = read('background.html')
+
+    config_src = read('config.js')
+    themes = parse_themes(config_src)
+
+    # embedded data preamble (before clouds3d's own scripts run)
+    stars = json.loads(read('vendor/stars.json'))
+    theme_css = {name: read(fname) for name, fname in themes.items()}
+    embed = (
+        '<script>\n'
+        'window.__starsData = %s;\n'
+        'window.__inlineThemeCss = %s;\n'
+        '</script>\n'
+        % (json.dumps(stars, separators=(',', ':')),
+           json.dumps(theme_css))
+    )
+    anchor = '<script src="vendor/suncalc.js"></script>'
+    html = html.replace(anchor, embed + anchor, 1)
+
+    html = inline_script(html, 'config.js', read('config.js'))
+    html = inline_script(html, 'i18n.js', read('i18n.js'))
+    html = inline_script(html, 'vendor/suncalc.js', read('vendor/suncalc.js'))
+    html = inline_script(html, 'vendor/plane3d.js', read('vendor/plane3d.js'))
+    html = inline_script(html, 'vendor/clouds3d.js', read('vendor/clouds3d.js'))
+
+    # the default <link id="theme-css" href="ash.css"> stays but is
+    # disabled by the inline-theme loader; keep a guarded fallback anyway
+    html = html.replace('<link id="theme-css"', '<!-- standalone: themes embedded -->\n    <link id="theme-css"', 1)
+
+    with open(os.path.join(ROOT, out), 'w', encoding='utf-8') as f:
+        f.write(html)
+
+    print('Wrote %s (%d bytes)' % (out, len(html)))
+    print('Inlined: config.js, i18n.js, suncalc.js, clouds3d.js,')
+    print('         stars.json (%d entries), themes: %s'
+          % (len(stars), ', '.join(themes)))
+
+
+if __name__ == '__main__':
+    main()