Minimal, pipeline-friendly XML sitemap generator.

Build a sitemap by starting with new/1, adding entries via add/2 or add/3, and rendering to XML with generate/1.

Usage

SitemapBuilder.new("https://example.com")
|> SitemapBuilder.add(%SitemapBuilder{url: "/en", lastmod: ~D[2026-01-01]})
|> SitemapBuilder.add(posts, &%SitemapBuilder{url: "/posts/#{&1.slug}", lastmod: &1.updated_at})
|> SitemapBuilder.generate()

Each entry is a %SitemapBuilder{} struct with two required fields:

• :url — path relative to the host (e.g. "/en/about")
• :lastmod — accepts Date, DateTime, or an Ecto datetime tuple