Dynamic Sitemaps with Supabase

Create a static sitemap.xml file for my site that has no database-dependent pages. Include:

1. A sitemap.xml file at the public root directory containing:
   - All public pages with their full canonical URLs using [YOUR_DOMAIN]
   - Appropriate lastmod dates (use today's date or actual last modified)
   - changefreq values (daily for homepage, weekly for main pages, monthly for static content)
   - priority values (1.0 for homepage, 0.8 for main sections, 0.6 for subpages)

2. These pages:
   - Homepage (/)
   - [List all your static pages, e.g., /about, /pricing, /contact, /features, /blog]

3. Proper XML structure with:
   - XML declaration
   - urlset with xmlns namespace
   - Properly escaped URLs

Make sure the sitemap validates against the sitemap protocol specification.

Create a sitemap system for my site that has both static pages and some dynamic
content from Supabase, but not enough to require pagination (under 1000 items
per entity).

1. Create an edge function at /functions/v1/sitemap that:
   - Fetches all dynamic entities from Supabase in a single query per entity
   - Combines with hardcoded static page URLs
   - Returns complete sitemap XML
   - Caches the response for 1 hour
   - Uses canonical domain: [YOUR_DOMAIN]

2. Include static pages:
   - [List your static pages, e.g., /, /about, /pricing, /contact]

3. Include dynamic entities:
   - [List your dynamic routes, e.g., blog posts at /blog/[slug]]

4. For each URL include:
   - loc (full canonical URL)
   - lastmod (from database updated_at or static date)
   - changefreq (based on content type)
   - priority (based on page importance)

5. Create a static sitemap.xml in public/ using <sitemapindex> that references the edge function URL

Create a single Supabase edge function at /functions/v1/sitemap that returns
a complete sitemap with all URLs (up to 50,000). Requirements:

1. The edge function should:
   - Query all dynamic entities from Supabase
   - Combine with hardcoded static page URLs
   - Return a single <urlset> XML document with all URLs
   - Include proper lastmod dates from updated_at columns
   - Set appropriate changefreq and priority values
   - Cache the response for 1 hour
   - Return proper XML content-type header
   - Use the canonical domain: [YOUR_DOMAIN]

2. Include static pages:
   - [List your static pages, e.g., /, /about, /pricing, /contact]

3. Include these dynamic entity types:
   - [List your entities, e.g., /blog/[slug], /products/[id], /users/[username]]

4. Ensure the total URL count stays under 50,000 (the sitemap protocol limit)

5. Create a static sitemap.xml in public/ using <sitemapindex> that references the edge function URL

Create a Supabase edge function at /functions/v1/sitemap that returns a
<sitemapindex> XML document listing paginated sub-sitemap URLs. Requirements:

1. The /functions/v1/sitemap edge function should:
   - Query entity counts from Supabase to determine pagination
   - Return a <sitemapindex> listing sub-sitemap URLs like:
     /functions/v1/sitemap-posts?page=1, /functions/v1/sitemap-posts?page=2, etc.
   - Include one entry per entity type per page (1000 URLs per page)
   - Cache the response for 1 hour
   - Return proper XML content-type header

2. For each entity type, create a separate edge function (e.g., /functions/v1/sitemap-posts) that:
   - Accepts a ?page=N query parameter
   - Queries Supabase for that batch of 1000 records
   - Returns a <urlset> XML document with those URLs
   - Includes proper lastmod dates from updated_at columns
   - Sets appropriate changefreq and priority values
   - Uses the canonical domain: [YOUR_DOMAIN]

3. Include these entity types:
   - [List your entities, e.g., /blog/[slug], /products/[id], /users/[username]]

4. Create a static sitemap.xml in public/ using <sitemapindex> that references
   the /functions/v1/sitemap edge function URL