feat: modules dependencies

models/module.py

@@ -12,8 +12,16 @@ if TYPE_CHECKING:
 project_module = Table(
     'project_module',
     BaseModel.metadata,
-    Column('project_id', ForeignKey('projects.id')),
-    Column('module_id', ForeignKey('modules.id')),
+    Column('project_id', ForeignKey('projects.id'), primary_key=True),
+    Column('module_id', ForeignKey('modules.id'), primary_key=True),
+)
+
+
+module_dependencies = Table(
+    'module_dependencies',
+    BaseModel.metadata,
+    Column('module_id', ForeignKey('modules.id'), primary_key=True),
+    Column('depends_on_id', ForeignKey('modules.id'), primary_key=True),
 )
 
 
@@ -26,6 +34,24 @@ class Module(BaseModel):
     icon_name: Mapped[Optional[str]] = mapped_column(unique=True, nullable=False)
     is_deleted: Mapped[bool] = mapped_column(default=False)
 
+    depends_on: Mapped[list['Module']] = relationship(
+        'Module',
+        secondary=module_dependencies,
+        primaryjoin='Module.id == module_dependencies.c.module_id',
+        secondaryjoin='Module.id == module_dependencies.c.depends_on_id',
+        back_populates='depended_on_by',
+        lazy='immediate',
+    )
+
+    depended_on_by: Mapped[list['Module']] = relationship(
+        'Module',
+        secondary='module_dependencies',
+        primaryjoin='Module.id == module_dependencies.c.depends_on_id',
+        secondaryjoin='Module.id == module_dependencies.c.module_id',
+        back_populates='depends_on',
+        lazy='noload',
+    )
+
     projects: Mapped[list['Project']] = relationship(
         'Project',
         uselist=True,