Move set default domain for alias to an external function (#2158)

* Move set default alias to a separate method to reuse it

* Add tests

* Find domains by domain not by id

* Revert models and setting changes

* Remove non required function

app/alias_suffix.py

@@ -64,8 +64,12 @@ def verify_prefix_suffix(
     # SimpleLogin domain case:
     # 1) alias_suffix must start with "." and
     # 2) alias_domain_prefix must come from the word list
+    available_sl_domains = [
+        sl_domain.domain
+        for sl_domain in user.get_sl_domains(alias_options=alias_options)
+    ]
     if (
-        alias_domain in user.available_sl_domains(alias_options=alias_options)
+        alias_domain in available_sl_domains
         and alias_domain not in user_custom_domains
         # when DISABLE_ALIAS_SUFFIX is true, alias_domain_prefix is empty
         and not config.DISABLE_ALIAS_SUFFIX
@@ -80,9 +84,7 @@ def verify_prefix_suffix(
                 LOG.e("wrong alias suffix %s, user %s", alias_suffix, user)
                 return False
 
-            if alias_domain not in user.available_sl_domains(
-                alias_options=alias_options
-            ):
+            if alias_domain not in available_sl_domains:
                 LOG.e("wrong alias suffix %s, user %s", alias_suffix, user)
                 return False
 

app/dashboard/views/setting.py

@@ -14,7 +14,7 @@ from flask_wtf import FlaskForm
 from flask_wtf.file import FileField
 from wtforms import StringField, validators
 
-from app import s3
+from app import s3, user_settings
 from app.config import (
     FIRST_ALIAS_DOMAIN,
     ALIAS_RANDOM_SUFFIX_LENGTH,
@@ -31,12 +31,10 @@ from app.models import (
     PlanEnum,
     File,
     EmailChange,
-    CustomDomain,
     AliasGeneratorEnum,
     AliasSuffixEnum,
     ManualSubscription,
     SenderFormatEnum,
-    SLDomain,
     CoinbaseSubscription,
     AppleSubscription,
     PartnerUser,
@@ -166,38 +164,11 @@ def setting():
             return redirect(url_for("dashboard.setting"))
         elif request.form.get("form-name") == "change-random-alias-default-domain":
             default_domain = request.form.get("random-alias-default-domain")
-
-            if default_domain:
-                sl_domain: SLDomain = SLDomain.get_by(domain=default_domain)
-                if sl_domain:
-                    if sl_domain.premium_only and not current_user.is_premium():
-                        flash("You cannot use this domain", "error")
-                        return redirect(url_for("dashboard.setting"))
-
-                    current_user.default_alias_public_domain_id = sl_domain.id
-                    current_user.default_alias_custom_domain_id = None
-                else:
-                    custom_domain = CustomDomain.get_by(domain=default_domain)
-                    if custom_domain:
-                        # sanity check
-                        if (
-                            custom_domain.user_id != current_user.id
-                            or not custom_domain.verified
-                        ):
-                            LOG.w(
-                                "%s cannot use domain %s", current_user, custom_domain
-                            )
-                            flash(f"Domain {default_domain} can't be used", "error")
-                            return redirect(request.url)
-                        else:
-                            current_user.default_alias_custom_domain_id = (
-                                custom_domain.id
-                            )
-                            current_user.default_alias_public_domain_id = None
-
-            else:
-                current_user.default_alias_custom_domain_id = None
-                current_user.default_alias_public_domain_id = None
+            try:
+                user_settings.set_default_alias_id(current_user, default_domain)
+            except user_settings.CannotSetAlias as e:
+                flash(e.msg, "error")
+                return redirect(url_for("dashboard.setting"))
 
             Session.commit()
             flash("Your preference has been updated", "success")

app/models.py

@@ -985,8 +985,8 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
         - the domain
         """
         res = []
-        for domain in self.available_sl_domains(alias_options=alias_options):
-            res.append((True, domain))
+        for domain in self.get_sl_domains(alias_options=alias_options):
+            res.append((True, domain.domain))
 
         for custom_domain in self.verified_custom_domains():
             res.append((False, custom_domain.domain))
@@ -1128,7 +1128,10 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
         - Verified custom domains
 
         """
-        domains = self.available_sl_domains(alias_options=alias_options)
+        domains = [
+            sl_domain.domain
+            for sl_domain in self.get_sl_domains(alias_options=alias_options)
+        ]
 
         for custom_domain in self.verified_custom_domains():
             domains.append(custom_domain.domain)
@@ -2483,7 +2486,7 @@ class CustomDomain(Base, ModelMixin):
         return sorted(self._auto_create_rules, key=lambda rule: rule.order)
 
     def __repr__(self):
-        return f"<Custom Domain {self.domain}>"
+        return f"<Custom Domain {self.id} {self.domain}>"
 
 
 class AutoCreateRule(Base, ModelMixin):
@@ -3114,7 +3117,7 @@ class SLDomain(Base, ModelMixin):
     )
 
     def __repr__(self):
-        return f"<SLDomain {self.domain} {'Premium' if self.premium_only else 'Free'}"
+        return f"<SLDomain {self.id} {self.domain} {'Premium' if self.premium_only else 'Free'}>"
 
 
 class Monitoring(Base, ModelMixin):

app/user_settings.py

@@ -0,0 +1,47 @@
+from typing import Optional
+
+from app.db import Session
+from app.log import LOG
+from app.models import User, SLDomain, CustomDomain
+
+
+class CannotSetAlias(Exception):
+    def __init__(self, msg: str):
+        self.msg = msg
+
+
+def set_default_alias_id(user: User, domain_name: Optional[str]):
+    if domain_name is None:
+        LOG.i(f"User {user} has set no domain as default domain")
+        user.default_alias_public_domain_id = None
+        user.default_alias_custom_domain_id = None
+        Session.flush()
+        return
+    sl_domain: SLDomain = SLDomain.get_by(domain=domain_name)
+    if sl_domain:
+        if sl_domain.hidden:
+            LOG.i(f"User {user} has tried to set up a hidden domain as default domain")
+            raise CannotSetAlias("Domain does not exist")
+        if sl_domain.premium_only and not user.is_premium():
+            LOG.i(f"User {user} has tried to set up a premium domain as default domain")
+            raise CannotSetAlias("You cannot use this domain")
+        LOG.i(f"User {user} has set public {sl_domain} as default domain")
+        user.default_alias_public_domain_id = sl_domain.id
+        user.default_alias_custom_domain_id = None
+        Session.flush()
+        return
+    custom_domain = CustomDomain.get_by(domain=domain_name)
+    if not custom_domain:
+        LOG.i(
+            f"User {user} has tried to set up an non existing domain as default domain"
+        )
+        raise CannotSetAlias("Domain does not exist or it hasn't been verified")
+    if custom_domain.user_id != user.id or not custom_domain.verified:
+        LOG.i(
+            f"User {user} has tried to set domain {custom_domain} as default domain that does not belong to the user or that is not verified"
+        )
+        raise CannotSetAlias("Domain does not exist or it hasn't been verified")
+    LOG.i(f"User {user} has set custom {custom_domain} as default domain")
+    user.default_alias_public_domain_id = None
+    user.default_alias_custom_domain_id = custom_domain.id
+    Session.flush()

tests/api/test_setting.py

@@ -44,6 +44,9 @@ def test_update_settings_alias_generator(flask_client):
 
 def test_update_settings_random_alias_default_domain(flask_client):
     user = login(flask_client)
+    custom_domain = CustomDomain.create(
+        domain=random_domain(), verified=True, user_id=user.id, flush=True
+    )
     assert user.default_random_alias_domain() == "sl.local"
 
     r = flask_client.patch(
@@ -57,6 +60,12 @@ def test_update_settings_random_alias_default_domain(flask_client):
     assert r.status_code == 200
     assert user.default_random_alias_domain() == "d1.test"
 
+    r = flask_client.patch(
+        "/api/setting", json={"random_alias_default_domain": custom_domain.domain}
+    )
+    assert r.status_code == 200
+    assert user.default_random_alias_domain() == custom_domain.domain
+
 
 def test_update_settings_sender_format(flask_client):
     user = login(flask_client)

tests/user_settings/test_set_default_alias_domain.py

@@ -0,0 +1,128 @@
+import pytest
+
+from app import user_settings
+from app.db import Session
+from app.models import User, CustomDomain, SLDomain
+from tests.utils import random_token, create_new_user
+
+user_id: int = 0
+custom_domain_name: str = ""
+sl_domain_name: str = ""
+
+
+def setup_module():
+    global user_id, custom_domain_name, sl_domain_name
+    user = create_new_user()
+    user.trial_end = None
+    user_id = user.id
+    custom_domain_name = CustomDomain.create(
+        user_id=user_id,
+        catch_all=True,
+        domain=random_token() + ".com",
+        verified=True,
+        flush=True,
+    ).domain
+    sl_domain_name = SLDomain.create(
+        domain=random_token() + ".com",
+        premium_only=False,
+        flush=True,
+        order=5,
+        hidden=False,
+    ).domain
+
+
+def test_set_default_no_domain():
+    user = User.get(user_id)
+    user.default_alias_public_domain_id = SLDomain.get_by(domain=sl_domain_name).id
+    user.default_alias_private_domain_id = CustomDomain.get_by(
+        domain=custom_domain_name
+    ).id
+    Session.flush()
+    user_settings.set_default_alias_id(user, None)
+    assert user.default_alias_public_domain_id is None
+    assert user.default_alias_custom_domain_id is None
+
+
+def test_set_premium_sl_domain_with_non_premium_user():
+    user = User.get(user_id)
+    user.lifetime = False
+    domain = SLDomain.get_by(domain=sl_domain_name)
+    domain.premium_only = True
+    Session.flush()
+    with pytest.raises(user_settings.CannotSetAlias):
+        user_settings.set_default_alias_id(user, sl_domain_name)
+
+
+def test_set_hidden_sl_domain():
+    user = User.get(user_id)
+    domain = SLDomain.get_by(domain=sl_domain_name)
+    domain.hidden = True
+    domain.premium_only = False
+    Session.flush()
+    with pytest.raises(user_settings.CannotSetAlias):
+        user_settings.set_default_alias_id(user, sl_domain_name)
+
+
+def test_set_sl_domain():
+    user = User.get(user_id)
+    user.lifetime = False
+    domain = SLDomain.get_by(domain=sl_domain_name)
+    domain.hidden = False
+    domain.premium_only = False
+    Session.flush()
+    user_settings.set_default_alias_id(user, sl_domain_name)
+    assert user.default_alias_public_domain_id == domain.id
+    assert user.default_alias_custom_domain_id is None
+
+
+def test_set_sl_premium_domain():
+    user = User.get(user_id)
+    user.lifetime = True
+    domain = SLDomain.get_by(domain=sl_domain_name)
+    domain.hidden = False
+    domain.premium_only = True
+    Session.flush()
+    user_settings.set_default_alias_id(user, sl_domain_name)
+    assert user.default_alias_public_domain_id == domain.id
+    assert user.default_alias_custom_domain_id is None
+
+
+def test_set_other_user_custom_domain():
+    user = User.get(user_id)
+    user.lifetime = True
+    other_user_domain_name = CustomDomain.create(
+        user_id=create_new_user().id,
+        catch_all=True,
+        domain=random_token() + ".com",
+        verified=True,
+    ).domain
+    Session.flush()
+    with pytest.raises(user_settings.CannotSetAlias):
+        user_settings.set_default_alias_id(user, other_user_domain_name)
+
+
+def test_set_unverified_custom_domain():
+    user = User.get(user_id)
+    user.lifetime = True
+    domain = CustomDomain.get_by(domain=custom_domain_name)
+    domain.verified = False
+    Session.flush()
+    with pytest.raises(user_settings.CannotSetAlias):
+        user_settings.set_default_alias_id(user, custom_domain_name)
+
+
+def test_set_custom_domain():
+    user = User.get(user_id)
+    user.lifetime = True
+    domain = CustomDomain.get_by(domain=custom_domain_name)
+    domain.verified = True
+    Session.flush()
+    user_settings.set_default_alias_id(user, custom_domain_name)
+    assert user.default_alias_public_domain_id is None
+    assert user.default_alias_custom_domain_id == domain.id
+
+
+def test_set_invalid_custom_domain():
+    user = User.get(user_id)
+    with pytest.raises(user_settings.CannotSetAlias):
+        user_settings.set_default_alias_id(user, "invalid_nop" + random_token())