add theme_color to config and use it for embed metadata

resolves #1

site/config.yaml

@@ -1,6 +1,7 @@
 base_url: "https://webdog.zyl.gay"
 title: webdog
 description: "static site builder for dogs"
+theme_color: "#ffc4fc"
 sass_styles: [index.scss]
 cdn_url: "https://i.zyl.gay/webdog/"
 code_theme: base16-ocean.dark # options: base16-ocean.dark, base16-eighties.dark, base16-mocha.dark, base16-ocean.light, InspiredGitHub, Solarized (dark), and Solarized (light)

site/pages/docs/config.md

@@ -19,6 +19,10 @@ the site's base title applied to all pages.
 
 presently unused field, set this to any string you like.
 
+## `theme_color`
+
+the default theme color to use for embed metadata.
+
 ## `build`
 
 the directory for the site to build to. defaults to `<site-path>/build` if not specified.

site/pages/docs/pages.md

@@ -59,7 +59,7 @@ prefixing a url with `cdn$` will join it with the site's cdn url as defined in t
 
 #### `theme_color`
 
-the theme color to use for the embed. optional, but the default is currently nonconfigurable.
+the theme color to use for the embed. optional, defaults to the value in your site's configuration.
 
 #### `large_image`
 

src/lib.rs

@@ -42,6 +42,8 @@ pub struct SiteConfig {
 	pub title: String,
 	/// The site's description? Not sure if this will actually be used or not
 	pub description: String,
+	/// the site's theme color for embed metadata
+	pub theme_color: String,
 	/// The site's build directory. Defaults to <site>/build if not specified.
 	pub build: Option<String>,
 	/// A list of Sass stylesheets that will be built.
@@ -68,6 +70,7 @@ impl SiteConfig {
 			base_url,
 			title,
 			description: Default::default(),
+			theme_color: "#ffc4fc".to_string(),
 			build: None,
 			sass_styles: vec!["index.scss".into()],
 			cdn_url,

src/resource.rs

@@ -71,8 +71,7 @@ pub struct EmbedMetadata {
 	pub description: Option<String>,
 	#[serde(default)]
 	pub image: Option<String>,
-	#[serde(default = "EmbedMetadata::default_theme_color")]
-	pub theme_color: String,
+	pub theme_color: Option<String>,
 	#[serde(default)]
 	pub large_image: bool,
 }
@@ -93,10 +92,11 @@ impl EmbedMetadata {
 			}
 			s = format!(r#"{s}<meta content="{image}" property="og:image">"#);
 		}
-		s = format!(
-			r#"{s}<meta content="{}" name="theme-color">"#,
-			self.theme_color
-		);
+		let theme_color = self
+			.theme_color
+			.as_ref()
+			.unwrap_or(&builder.site.config.theme_color);
+		s = format!(r#"{s}<meta content="{theme_color}" name="theme-color">"#);
 		if self.large_image {
 			s = format!(r#"{s}<meta name="twitter:card" content="summary_large_image">"#);
 		}
@@ -261,7 +261,7 @@ impl ResourceBuilder {
 					} else {
 						None
 					},
-					theme_color: EmbedMetadata::default_theme_color(),
+					theme_color: None,
 					large_image: true,
 				}),
 				..Default::default()