On registration, automatically set content languages from `accept-language` header (#4550)

* On registration, automatically set content languages from accept header

* no need to set site language or default language for new user anymore

* fix test

* fix langs

* avoid duplicate writing of new user languages

api_tests/src/user.spec.ts

@@ -139,3 +139,23 @@ test("Create user with Arabic name", async () => {
   let alphaPerson = (await resolvePerson(alpha, apShortname)).person;
   expect(alphaPerson).toBeDefined();
 });
+
+test("Create user with accept-language", async () => {
+  let lemmy_http = new LemmyHttp(alphaUrl, {
+    // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Language#syntax
+    headers: { "Accept-Language": "fr-CH, en;q=0.8, de;q=0.7, *;q=0.5" },
+  });
+  let user = await registerUser(lemmy_http, alphaUrl);
+
+  let site = await getSite(user);
+  expect(site.my_user).toBeDefined();
+  expect(site.my_user?.local_user_view.local_user.interface_language).toBe(
+    "fr",
+  );
+  let langs = site.all_languages
+    .filter(a => site.my_user?.discussion_languages.includes(a.id))
+    .map(l => l.code);
+  // should have languages from accept header, as well as "undetermined"
+  // which is automatically enabled by backend
+  expect(langs).toStrictEqual(["und", "de", "en", "fr"]);
+});

crates/api/src/local_user/generate_totp_secret.rs

@@ -6,10 +6,7 @@ use lemmy_api_common::{
   person::GenerateTotpSecretResponse,
   sensitive::Sensitive,
 };
-use lemmy_db_schema::{
-  source::local_user::{LocalUser, LocalUserUpdateForm},
-  traits::Crud,
-};
+use lemmy_db_schema::source::local_user::{LocalUser, LocalUserUpdateForm};
 use lemmy_db_views::structs::{LocalUserView, SiteView};
 use lemmy_utils::error::{LemmyError, LemmyErrorType};
 

crates/api/src/local_user/update_totp.rs

@@ -4,10 +4,7 @@ use lemmy_api_common::{
   context::LemmyContext,
   person::{UpdateTotp, UpdateTotpResponse},
 };
-use lemmy_db_schema::{
-  source::local_user::{LocalUser, LocalUserUpdateForm},
-  traits::Crud,
-};
+use lemmy_db_schema::source::local_user::{LocalUser, LocalUserUpdateForm};
 use lemmy_db_views::structs::LocalUserView;
 use lemmy_utils::error::LemmyError;
 

crates/api_common/src/claims.rs

@@ -124,7 +124,9 @@ mod tests {
       .password_encrypted("123456".to_string())
       .build();
 
-    let inserted_local_user = LocalUser::create(pool, &local_user_form).await.unwrap();
+    let inserted_local_user = LocalUser::create(pool, &local_user_form, vec![])
+      .await
+      .unwrap();
 
     let req = TestRequest::default().to_http_request();
     let jwt = Claims::generate(inserted_local_user.id, req, &context)

crates/api_crud/src/user/create.rs

@@ -20,6 +20,7 @@ use lemmy_db_schema::{
   aggregates::structs::PersonAggregates,
   source::{
     captcha_answer::{CaptchaAnswer, CheckCaptchaAnswer},
+    language::Language,
     local_user::{LocalUser, LocalUserInsertForm},
     local_user_vote_display_mode::LocalUserVoteDisplayMode,
     person::{Person, PersonInsertForm},
@@ -36,6 +37,7 @@ use lemmy_utils::{
     validation::is_valid_actor_name,
   },
 };
+use std::collections::HashSet;
 
 #[tracing::instrument(skip(context))]
 pub async fn register(
@@ -128,12 +130,15 @@ pub async fn register(
   let accepted_application = Some(!require_registration_application);
 
   // Get the user's preferred language using the Accept-Language header
-  let language_tag = req.headers().get("Accept-Language").and_then(|hdr| {
-    accept_language::parse(hdr.to_str().unwrap_or_default())
-      .first()
-      // Remove the optional region code
-      .map(|lang_str| lang_str.split('-').next().unwrap_or_default().to_string())
-  });
+  let language_tags: Vec<String> = req
+    .headers()
+    .get("Accept-Language")
+    .map(|hdr| accept_language::parse(hdr.to_str().unwrap_or_default()))
+    .iter()
+    .flatten()
+    // Remove the optional region code
+    .map(|lang_str| lang_str.split('-').next().unwrap_or_default().to_string())
+    .collect();
 
   // Create the local user
   let local_user_form = LocalUserInsertForm::builder()
@@ -144,12 +149,23 @@ pub async fn register(
     .accepted_application(accepted_application)
     .default_listing_type(Some(local_site.default_post_listing_type))
     .post_listing_mode(Some(local_site.default_post_listing_mode))
-    .interface_language(language_tag)
+    .interface_language(language_tags.first().cloned())
     // If its the initial site setup, they are an admin
     .admin(Some(!local_site.site_setup))
     .build();
 
-  let inserted_local_user = LocalUser::create(&mut context.pool(), &local_user_form).await?;
+  let all_languages = Language::read_all(&mut context.pool()).await?;
+  // use hashset to avoid duplicates
+  let mut language_ids = HashSet::new();
+  for l in language_tags {
+    if let Some(found) = all_languages.iter().find(|all| all.code == l) {
+      language_ids.insert(found.id);
+    }
+  }
+  let language_ids = language_ids.into_iter().collect();
+
+  let inserted_local_user =
+    LocalUser::create(&mut context.pool(), &local_user_form, language_ids).await?;
 
   if local_site.site_setup && require_registration_application {
     // Create the registration application

crates/apub/src/api/user_settings_backup.rs

@@ -361,7 +361,7 @@ mod tests {
       .person_id(person.id)
       .password_encrypted("pass".to_string())
       .build();
-    let local_user = LocalUser::create(&mut context.pool(), &user_form).await?;
+    let local_user = LocalUser::create(&mut context.pool(), &user_form, vec![]).await?;
 
     Ok(LocalUserView::read(&mut context.pool(), local_user.id).await?)
   }

crates/db_schema/src/impls/actor_language.rs

@@ -523,10 +523,6 @@ mod tests {
     let pool = &mut pool.into();
 
     let (site, instance) = create_test_site(pool).await;
-    let mut test_langs = test_langs1(pool).await;
-    SiteLanguage::update(pool, test_langs.clone(), &site)
-      .await
-      .unwrap();
 
     let person_form = PersonInsertForm::builder()
       .name("my test person".to_string())
@@ -539,14 +535,13 @@ mod tests {
       .password_encrypted("my_pw".to_string())
       .build();
 
-    let local_user = LocalUser::create(pool, &local_user_form).await.unwrap();
+    let local_user = LocalUser::create(pool, &local_user_form, vec![])
+      .await
+      .unwrap();
     let local_user_langs1 = LocalUserLanguage::read(pool, local_user.id).await.unwrap();
 
-    // new user should be initialized with site languages and undetermined
-    //test_langs.push(UNDETERMINED_ID);
-    //test_langs.sort();
-    test_langs.insert(0, UNDETERMINED_ID);
-    assert_eq!(test_langs, local_user_langs1);
+    // new user should be initialized with all languages
+    assert_eq!(0, local_user_langs1.len());
 
     // update user languages
     let test_langs2 = test_langs2(pool).await;
@@ -655,7 +650,9 @@ mod tests {
       .person_id(person.id)
       .password_encrypted("my_pw".to_string())
       .build();
-    let local_user = LocalUser::create(pool, &local_user_form).await.unwrap();
+    let local_user = LocalUser::create(pool, &local_user_form, vec![])
+      .await
+      .unwrap();
     LocalUserLanguage::update(pool, test_langs2, local_user.id)
       .await
       .unwrap();

crates/db_schema/src/impls/local_user.rs

@@ -1,12 +1,11 @@
 use crate::{
-  newtypes::{DbUrl, LocalUserId, PersonId},
+  newtypes::{DbUrl, LanguageId, LocalUserId, PersonId},
   schema::{local_user, person, registration_application},
   source::{
-    actor_language::{LocalUserLanguage, SiteLanguage},
+    actor_language::LocalUserLanguage,
     local_user::{LocalUser, LocalUserInsertForm, LocalUserUpdateForm},
     local_user_vote_display_mode::{LocalUserVoteDisplayMode, LocalUserVoteDisplayModeInsertForm},
   },
-  traits::Crud,
   utils::{
     functions::{coalesce, lower},
     get_conn,
@@ -25,6 +24,52 @@ use diesel::{
 use diesel_async::RunQueryDsl;
 
 impl LocalUser {
+  pub async fn create(
+    pool: &mut DbPool<'_>,
+    form: &LocalUserInsertForm,
+    languages: Vec<LanguageId>,
+  ) -> Result<LocalUser, Error> {
+    let conn = &mut get_conn(pool).await?;
+    let mut form_with_encrypted_password = form.clone();
+    let password_hash =
+      hash(&form.password_encrypted, DEFAULT_COST).expect("Couldn't hash password");
+    form_with_encrypted_password.password_encrypted = password_hash;
+
+    let local_user_ = insert_into(local_user::table)
+      .values(form_with_encrypted_password)
+      .get_result::<Self>(conn)
+      .await?;
+
+    LocalUserLanguage::update(pool, languages, local_user_.id).await?;
+
+    // Create their vote_display_modes
+    let vote_display_mode_form = LocalUserVoteDisplayModeInsertForm::builder()
+      .local_user_id(local_user_.id)
+      .build();
+    LocalUserVoteDisplayMode::create(pool, &vote_display_mode_form).await?;
+
+    Ok(local_user_)
+  }
+
+  pub async fn update(
+    pool: &mut DbPool<'_>,
+    local_user_id: LocalUserId,
+    form: &LocalUserUpdateForm,
+  ) -> Result<LocalUser, Error> {
+    let conn = &mut get_conn(pool).await?;
+    diesel::update(local_user::table.find(local_user_id))
+      .set(form)
+      .get_result::<Self>(conn)
+      .await
+  }
+
+  pub async fn delete(pool: &mut DbPool<'_>, id: LocalUserId) -> Result<usize, Error> {
+    let conn = &mut *get_conn(pool).await?;
+    diesel::delete(local_user::table.find(id))
+      .execute(conn)
+      .await
+  }
+
   pub async fn update_password(
     pool: &mut DbPool<'_>,
     local_user_id: LocalUserId,
@@ -183,52 +228,3 @@ pub struct UserBackupLists {
   pub blocked_users: Vec<DbUrl>,
   pub blocked_instances: Vec<String>,
 }
-
-#[async_trait]
-impl Crud for LocalUser {
-  type InsertForm = LocalUserInsertForm;
-  type UpdateForm = LocalUserUpdateForm;
-  type IdType = LocalUserId;
-
-  async fn create(pool: &mut DbPool<'_>, form: &Self::InsertForm) -> Result<Self, Error> {
-    let conn = &mut get_conn(pool).await?;
-    let mut form_with_encrypted_password = form.clone();
-    let password_hash =
-      hash(&form.password_encrypted, DEFAULT_COST).expect("Couldn't hash password");
-    form_with_encrypted_password.password_encrypted = password_hash;
-
-    let local_user_ = insert_into(local_user::table)
-      .values(form_with_encrypted_password)
-      .get_result::<Self>(conn)
-      .await?;
-
-    let site_languages = SiteLanguage::read_local_raw(pool).await;
-    if let Ok(langs) = site_languages {
-      // if site exists, init user with site languages
-      LocalUserLanguage::update(pool, langs, local_user_.id).await?;
-    } else {
-      // otherwise, init with all languages (this only happens during tests and
-      // for first admin user, which is created before site)
-      LocalUserLanguage::update(pool, vec![], local_user_.id).await?;
-    }
-
-    // Create their vote_display_modes
-    let vote_display_mode_form = LocalUserVoteDisplayModeInsertForm::builder()
-      .local_user_id(local_user_.id)
-      .build();
-    LocalUserVoteDisplayMode::create(pool, &vote_display_mode_form).await?;
-
-    Ok(local_user_)
-  }
-  async fn update(
-    pool: &mut DbPool<'_>,
-    local_user_id: LocalUserId,
-    form: &Self::UpdateForm,
-  ) -> Result<Self, Error> {
-    let conn = &mut get_conn(pool).await?;
-    diesel::update(local_user::table.find(local_user_id))
-      .set(form)
-      .get_result::<Self>(conn)
-      .await
-  }
-}

crates/db_schema/src/impls/password_reset_request.rs

@@ -121,7 +121,9 @@ mod tests {
       .password_encrypted("pass".to_string())
       .build();
 
-    let inserted_local_user = LocalUser::create(pool, &new_local_user).await.unwrap();
+    let inserted_local_user = LocalUser::create(pool, &new_local_user, vec![])
+      .await
+      .unwrap();
 
     let token = "nope";
 

crates/db_views/src/comment_report_view.rs

@@ -308,7 +308,9 @@ mod tests {
       .person_id(inserted_timmy.id)
       .password_encrypted("123".to_string())
       .build();
-    let timmy_local_user = LocalUser::create(pool, &new_local_user).await.unwrap();
+    let timmy_local_user = LocalUser::create(pool, &new_local_user, vec![])
+      .await
+      .unwrap();
     let timmy_view = LocalUserView {
       local_user: timmy_local_user,
       local_user_vote_display_mode: LocalUserVoteDisplayMode::default(),

crates/db_views/src/comment_view.rs

@@ -503,7 +503,7 @@ mod tests {
       .admin(Some(true))
       .password_encrypted(String::new())
       .build();
-    let inserted_timmy_local_user = LocalUser::create(pool, &timmy_local_user_form)
+    let inserted_timmy_local_user = LocalUser::create(pool, &timmy_local_user_form, vec![])
       .await
       .unwrap();
 

crates/db_views/src/post_report_view.rs

@@ -330,7 +330,9 @@ mod tests {
       .person_id(inserted_timmy.id)
       .password_encrypted("123".to_string())
       .build();
-    let timmy_local_user = LocalUser::create(pool, &new_local_user).await.unwrap();
+    let timmy_local_user = LocalUser::create(pool, &new_local_user, vec![])
+      .await
+      .unwrap();
     let timmy_view = LocalUserView {
       local_user: timmy_local_user,
       local_user_vote_display_mode: LocalUserVoteDisplayMode::default(),

crates/db_views/src/post_view.rs

@@ -829,7 +829,7 @@ mod tests {
       admin: Some(true),
       ..LocalUserInsertForm::test_form(inserted_person.id)
     };
-    let inserted_local_user = LocalUser::create(pool, &local_user_form).await?;
+    let inserted_local_user = LocalUser::create(pool, &local_user_form, vec![]).await?;
 
     let new_bot = PersonInsertForm {
       bot_account: Some(true),
@@ -855,6 +855,7 @@ mod tests {
     let inserted_blocked_local_user = LocalUser::create(
       pool,
       &LocalUserInsertForm::test_form(inserted_blocked_person.id),
+      vec![],
     )
     .await?;
 

crates/db_views/src/registration_application_view.rs

@@ -176,7 +176,7 @@ mod tests {
       .admin(Some(true))
       .build();
 
-    let _inserted_timmy_local_user = LocalUser::create(pool, &timmy_local_user_form)
+    let _inserted_timmy_local_user = LocalUser::create(pool, &timmy_local_user_form, vec![])
       .await
       .unwrap();
 
@@ -193,7 +193,7 @@ mod tests {
       .password_encrypted("nada".to_string())
       .build();
 
-    let inserted_sara_local_user = LocalUser::create(pool, &sara_local_user_form)
+    let inserted_sara_local_user = LocalUser::create(pool, &sara_local_user_form, vec![])
       .await
       .unwrap();
 
@@ -224,7 +224,7 @@ mod tests {
       .password_encrypted("nada".to_string())
       .build();
 
-    let inserted_jess_local_user = LocalUser::create(pool, &jess_local_user_form)
+    let inserted_jess_local_user = LocalUser::create(pool, &jess_local_user_form, vec![])
       .await
       .unwrap();
 

crates/db_views_actor/src/community_view.rs

@@ -296,7 +296,9 @@ mod tests {
       .person_id(inserted_person.id)
       .password_encrypted(String::new())
       .build();
-    let local_user = LocalUser::create(pool, &local_user_form).await.unwrap();
+    let local_user = LocalUser::create(pool, &local_user_form, vec![])
+      .await
+      .unwrap();
 
     let new_community = CommunityInsertForm::builder()
       .name("test_community_3".to_string())

crates/db_views_actor/src/person_view.rs

@@ -204,7 +204,7 @@ mod tests {
       .person_id(alice.id)
       .password_encrypted(String::new())
       .build();
-    let alice_local_user = LocalUser::create(pool, &alice_local_user_form).await?;
+    let alice_local_user = LocalUser::create(pool, &alice_local_user_form, vec![]).await?;
 
     let bob_form = PersonInsertForm::builder()
       .name("bob".to_string())
@@ -218,7 +218,7 @@ mod tests {
       .person_id(bob.id)
       .password_encrypted(String::new())
       .build();
-    let bob_local_user = LocalUser::create(pool, &bob_local_user_form).await?;
+    let bob_local_user = LocalUser::create(pool, &bob_local_user_form, vec![]).await?;
 
     Ok(Data {
       alice,

src/code_migrations.rs

@@ -475,7 +475,7 @@ async fn initialize_local_site_2022_10_10(
       .email(setup.admin_email.clone())
       .admin(Some(true))
       .build();
-    LocalUser::create(pool, &local_user_form).await?;
+    LocalUser::create(pool, &local_user_form, vec![]).await?;
   };
 
   // Add an entry for the site table

src/session_middleware.rs

@@ -155,7 +155,9 @@ mod tests {
       .password_encrypted("123456".to_string())
       .build();
 
-    let inserted_local_user = LocalUser::create(pool, &local_user_form).await.unwrap();
+    let inserted_local_user = LocalUser::create(pool, &local_user_form, vec![])
+      .await
+      .unwrap();
 
     let req = TestRequest::default().to_http_request();
     let jwt = Claims::generate(inserted_local_user.id, req, &context)