add script to generate the gallery

jupyterbook/content/make_gallery.py

@@ -0,0 +1,61 @@
+import nbformat
+import glob
+import os
+
+from nbconvert.exporters import markdown
+
+SITE_DIR = "."
+IMAGE_DIR = os.path.join(SITE_DIR, "images")
+
+
+def extract_notebook_info(nb_path):
+    title = "No title"
+    image = "images/placeholder.png"
+    exporter = markdown.MarkdownExporter()
+    output, resources = exporter.from_filename(nb_path)
+    for line in output.splitlines():
+        line = line.strip()
+        if line.startswith("#"):
+            title = line.strip("#").strip()
+            break
+
+    images = sorted(resources["outputs"])
+    if images:
+        img_file = images[-1]
+        thumb_name = os.path.join(
+            IMAGE_DIR,
+            os.path.splitext(os.path.basename(nb_path))[0]
+            + os.path.splitext(img_file)[-1],
+        )
+
+        with open(os.path.join(thumb_name), "wb") as thumb:
+            thumb.write(resources["outputs"][img_file])
+
+        image = os.path.relpath(thumb_name, SITE_DIR)
+    link = f"./{nb_path.replace('.ipynb', '.html')}"
+    return title, image, link
+
+
+def make_gallery_entry(nb_path):
+    title, image, link = extract_notebook_info(nb_path)
+    nb = nbformat.read(nb_path, as_version=4)
+    return f"""\
+    :::{{grid-item-card}} {title}
+    :margin: 3 0 0 0
+    :link: {link}
+    :link-type: url
+    :text-align: center
+    :shadow: md
+
+    {{bdg-primary}}`{nb_path.split("/")[1].replace("_", " ").title().strip("Notebooks").strip()}`
+    {{bdg-secondary}}`ERDDAP`
+    {{bdg-info}}`{nb["metadata"]["language_info"]["name"]}`
+    ^^^
+
+    <img src="{image}"/>
+    :::
+    """
+
+
+for nb_path in sorted(glob.glob("code_gallery/**/*.ipynb")):
+    print(make_gallery_entry(nb_path))