Minimal changes to add hidden book

This change introduces the minimal amount of changes to accomplish the
following:

- Old "book" is now Quick Start
- New book has a initial version (v0.11.0) with one page
- A link which defaults to being hidden has been added to the list of
  links on /learn

content/learn/book/_index.md

@@ -1,8 +1,4 @@
 +++
-title = "Book"
-sort_by = "weight"
-template = "docs-section.html"
-page_template = "docs-section.html"
-redirect_to = "learn/book/introduction"
+redirect_to = "learn/book/v0.11.0/getting-started/why-bevy"
 insert_anchor_links = "right"
 +++

content/learn/book/v0.11.0/_index.md

@@ -0,0 +1,10 @@
++++
+title = "Bevy Book v0.11.0"
+sort_by = "weight"
+template = "docs-section.html"
+page_template = "docs-section.html"
+redirect_to = "learn/book/v0.11.0/getting-started/why-bevy"
+insert_anchor_links = "right"
+[extra]
+header_message = "v0.11.0"
++++

content/learn/book/v0.11.0/getting-started/_index.md

@@ -0,0 +1,11 @@
++++
+title = "Getting Started"
+weight = 1
+sort_by = "weight"
+template = "docs-section.html"
+page_template = "docs-section.html"
+redirect_to = "learn/book/v0.11.0/getting-started/why-bevy"
+insert_anchor_links = "right"
+[extra]
+header_message = "Getting Started"
++++

content/learn/book/v0.11.0/getting-started/why-bevy/_index.md

@@ -0,0 +1,12 @@
++++
+title = "Why Bevy?"
+weight = 1
+sort_by = "weight"
+template = "docs-section.html"
+page_template = "docs-section.html"
+insert_anchor_links = "right"
+[extra]
+header_message = "Why Bevy?"
++++
+
+TODO: Missing everything

content/learn/links.toml

@@ -1,10 +1,18 @@
 [[links]]
-title = "The Bevy Book"
-url = "/learn/book/introduction"
+title = "Quick Start"
+url = "/learn/quick-start/introduction"
 image = "/assets/book.svg"
-image_alt = "Bevy book"
+image_alt = "Bevy Book Icon"
 description = "Learn how to use Bevy using this step-by-step guide. If you are new to Bevy, you should probably start here."
 
+[[links]]
+title = "Bevy Book"
+url = "/learn/book/v0.11.0/getting-started/why-bevy"
+image = "/assets/book.svg"
+image_alt = "Bevy Book Icon"
+hidden = true # TODO remove this line once book is ready to be published
+description = "TODO to fill"
+
 [[links]]
 title = "Migration Guides"
 url = "/learn/migration-guides/introduction"

content/learn/quick-start/_index.md

@@ -0,0 +1,9 @@
++++
+title = "Book"
+sort_by = "weight"
+template = "docs-section.html"
+page_template = "docs-section.html"
+redirect_to = "learn/quick-start/introduction"
+aliases = ["learn/book/introduction"]
+insert_anchor_links = "right"
++++

templates/layouts/base.html

@@ -60,6 +60,8 @@
                                 {{section.extra.header_message}}
                             {% elif page and page.extra.header_message %}
                                 {{page.extra.header_message}}
+                            {% elif section and section.path is starting_with("/learn/quick-start/") %}
+                                Quick Start
                             {% elif section and section.path is starting_with("/learn/book/") %}
                                 The Book
                             {% elif section and section.path is starting_with("/learn/migration-guides/") %}

templates/learn.html

@@ -4,6 +4,7 @@
 {% set learn_links = load_data(path="content/learn/links.toml") %}
 <div class="padded-content item-grid item-grid--two-cols">
     {% for link in learn_links.links %}
+        {% if not link.hidden %}
         <a class="link-card" href="{{ link.url }}">
             <div class="link-card__img-wrapper">
                 <img class="link-card__img" src="{{ link.image }}" alt="{{ link.image_alt }}" />
@@ -16,6 +17,7 @@ <h2 class="link-card__title">{{ link.title }}</h2>
                 <p class="link-card__description">{{ link.description }}</p>
             </div>
         </a>
+        {% endif %}
     {% endfor %}
 </div>
 {% endblock content %}