Add a toggle between dark and light theme

backend/src/html_templates.rs

@@ -1,6 +1,7 @@
 use askama::Template;
 
 use crate::{
+    Context,
     data::model,
     translation::{self, Sentence, Tr},
 };
@@ -20,8 +21,7 @@ impl Recipes {
 #[derive(Template)]
 #[template(path = "home.html")]
 pub struct HomeTemplate {
-    pub user: Option<model::User>,
-    pub tr: Tr,
+    pub context: Context,
 
     pub recipes: Recipes,
 }
@@ -29,8 +29,7 @@ pub struct HomeTemplate {
 #[derive(Template)]
 #[template(path = "message.html")]
 pub struct MessageTemplate<'a> {
-    pub user: Option<model::User>,
-    pub tr: Tr,
+    pub context: Context,
 
     pub message: &'a str,
     pub as_code: bool, // Display the message in <pre> markup.
@@ -39,8 +38,11 @@ pub struct MessageTemplate<'a> {
 impl<'a> MessageTemplate<'a> {
     pub fn new(message: &'a str, tr: Tr) -> MessageTemplate<'a> {
         MessageTemplate {
-            user: None,
-            tr,
+            context: Context {
+                user: None,
+                tr,
+                dark_theme: false,
+            },
             message,
             as_code: false,
         }
@@ -52,8 +54,11 @@ impl<'a> MessageTemplate<'a> {
         user: Option<model::User>,
     ) -> MessageTemplate<'a> {
         MessageTemplate {
-            user,
-            tr,
+            context: Context {
+                user,
+                tr,
+                dark_theme: false,
+            },
             message,
             as_code: false,
         }
@@ -63,8 +68,7 @@ impl<'a> MessageTemplate<'a> {
 #[derive(Template)]
 #[template(path = "sign_up_form.html")]
 pub struct SignUpFormTemplate<'a> {
-    pub user: Option<model::User>,
-    pub tr: Tr,
+    pub context: Context,
 
     pub email: String,
     pub message: &'a str,
@@ -75,8 +79,7 @@ pub struct SignUpFormTemplate<'a> {
 #[derive(Template)]
 #[template(path = "sign_in_form.html")]
 pub struct SignInFormTemplate<'a> {
-    pub user: Option<model::User>,
-    pub tr: Tr,
+    pub context: Context,
 
     pub email: &'a str,
     pub message: &'a str,
@@ -85,8 +88,7 @@ pub struct SignInFormTemplate<'a> {
 #[derive(Template)]
 #[template(path = "ask_reset_password.html")]
 pub struct AskResetPasswordTemplate<'a> {
-    pub user: Option<model::User>,
-    pub tr: Tr,
+    pub context: Context,
 
     pub email: &'a str,
     pub message: &'a str,
@@ -96,8 +98,7 @@ pub struct AskResetPasswordTemplate<'a> {
 #[derive(Template)]
 #[template(path = "reset_password.html")]
 pub struct ResetPasswordTemplate<'a> {
-    pub user: Option<model::User>,
-    pub tr: Tr,
+    pub context: Context,
 
     pub reset_token: &'a str,
     pub message: &'a str,
@@ -107,8 +108,7 @@ pub struct ResetPasswordTemplate<'a> {
 #[derive(Template)]
 #[template(path = "profile.html")]
 pub struct ProfileTemplate<'a> {
-    pub user: Option<model::User>,
-    pub tr: Tr,
+    pub context: Context,
 
     pub username: &'a str,
     pub email: &'a str,
@@ -121,8 +121,7 @@ pub struct ProfileTemplate<'a> {
 #[derive(Template)]
 #[template(path = "recipe_view.html")]
 pub struct RecipeViewTemplate {
-    pub user: Option<model::User>,
-    pub tr: Tr,
+    pub context: Context,
 
     pub recipes: Recipes,
 
@@ -132,8 +131,7 @@ pub struct RecipeViewTemplate {
 #[derive(Template)]
 #[template(path = "recipe_edit.html")]
 pub struct RecipeEditTemplate {
-    pub user: Option<model::User>,
-    pub tr: Tr,
+    pub context: Context,
 
     pub recipes: Recipes,
 
@@ -143,7 +141,7 @@ pub struct RecipeEditTemplate {
 #[derive(Template)]
 #[template(path = "recipes_list_fragment.html")]
 pub struct RecipesListFragmentTemplate {
-    pub tr: Tr,
+    pub context: Context,
 
     pub recipes: Recipes,
 }