seo

boker/routes/public.py

@@ -1,8 +1,11 @@
 #!/usr/bin/env python3
 from __future__ import annotations
 
-from flask import Blueprint, flash, redirect, render_template, request, url_for
-from flask import current_app
+from datetime import date
+from xml.sax.saxutils import escape as xml_escape
+
+from flask import Blueprint, Response, current_app, flash, redirect, render_template, request, url_for
+from sqlalchemy.exc import SQLAlchemyError
 
 from boker.charts import cumulative_profit_series, player_session_series, session_breakdown_series
 from boker.config import ELIGIBLE_MIN_SESSIONS
@@ -18,11 +21,74 @@ from boker.utils import session_label, session_sort_key
 public_bp = Blueprint("public", __name__)
 
 
+def _absolute_url(path: str) -> str:
+    base_url = current_app.config.get("APP_BASE_URL", "https://myboker.org").rstrip("/")
+    return f"{base_url}{path}"
+
+
+def _sitemap_url(path: str, priority: str, changefreq: str = "weekly") -> str:
+    return (
+        "  <url>\n"
+        f"    <loc>{xml_escape(_absolute_url(path))}</loc>\n"
+        f"    <lastmod>{date.today().isoformat()}</lastmod>\n"
+        f"    <changefreq>{changefreq}</changefreq>\n"
+        f"    <priority>{priority}</priority>\n"
+        "  </url>"
+    )
+
+
 @public_bp.get("/")
 def home():
     return render_template("landing.html")
 
 
+@public_bp.get("/robots.txt")
+def robots_txt():
+    body = "\n".join(
+        [
+            "User-agent: *",
+            "Allow: /",
+            "Disallow: /internal/",
+            "Disallow: /account/",
+            "Sitemap: " + _absolute_url(url_for("public.sitemap_xml")),
+            "",
+        ]
+    )
+    return Response(body, mimetype="text/plain")
+
+
+@public_bp.get("/sitemap.xml")
+def sitemap_xml():
+    urls = [
+        _sitemap_url(url_for("public.home"), "1.0", "weekly"),
+        _sitemap_url(url_for("public.explore"), "0.8", "daily"),
+        _sitemap_url(url_for("public.help"), "0.7", "monthly"),
+        _sitemap_url(url_for("public.privacy"), "0.3", "yearly"),
+        _sitemap_url(url_for("public.terms"), "0.3", "yearly"),
+    ]
+
+    from boker.db import database_extensions_available
+
+    if database_extensions_available():
+        try:
+            from boker.league_repositories import list_public_leagues
+
+            for league in list_public_leagues():
+                urls.append(_sitemap_url(url_for("leagues.dashboard", league_ref=league.url_ref), "0.6", "weekly"))
+                urls.append(_sitemap_url(url_for("leagues.leaderboard", league_ref=league.url_ref), "0.5", "weekly"))
+                urls.append(_sitemap_url(url_for("leagues.sessions", league_ref=league.url_ref), "0.5", "weekly"))
+        except SQLAlchemyError:
+            current_app.logger.warning("Sitemap public league query failed", exc_info=True)
+
+    body = (
+        '<?xml version="1.0" encoding="UTF-8"?>\n'
+        '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">\n'
+        + "\n".join(urls)
+        + "\n</urlset>\n"
+    )
+    return Response(body, mimetype="application/xml")
+
+
 @public_bp.get("/help")
 def help():
     return render_template("support.html")