feat: Let the user add their own system prompts (#643)

* feat: Let the user add their own system prompts

Related: #454

This PR is not ready yet. For the moment it adds the system prompts
to DB and associates it to a workspace.

It's missing to use the system prompt and actually send it to the
LLM

* Finished functionality to add wrkspace system prompt

* separated into it's own command system-prompt

* Raise WorkspaceDoesNotExistError on update system-prompt

* Added show system-prompt command

* comment changes

* unit test fixes

* added some docstrings and mentioned dashboard

migrations/versions/a692c8b52308_add_workspace_system_prompt.py

@@ -0,0 +1,26 @@
+"""add_workspace_system_prompt
+
+Revision ID: a692c8b52308
+Revises: 5c2f3eee5f90
+Create Date: 2025-01-17 16:33:58.464223
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "a692c8b52308"
+down_revision: Union[str, None] = "5c2f3eee5f90"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # Add column to workspaces table
+    op.execute("ALTER TABLE workspaces ADD COLUMN system_prompt TEXT DEFAULT NULL;")
+
+
+def downgrade() -> None:
+    op.execute("ALTER TABLE workspaces DROP COLUMN system_prompt;")

src/codegate/db/connection.py

@@ -248,16 +248,15 @@ async def record_context(self, context: Optional[PipelineContext]) -> None:
         except Exception as e:
             logger.error(f"Failed to record context: {context}.", error=str(e))
 
-    async def add_workspace(self, workspace_name: str) -> Optional[Workspace]:
+    async def add_workspace(self, workspace_name: str) -> Workspace:
         """Add a new workspace to the DB.
 
         This handles validation and insertion of a new workspace.
 
         It may raise a ValidationError if the workspace name is invalid.
         or a AlreadyExistsError if the workspace already exists.
         """
-        workspace = Workspace(id=str(uuid.uuid4()), name=workspace_name)
-
+        workspace = Workspace(id=str(uuid.uuid4()), name=workspace_name, system_prompt=None)
         sql = text(
             """
             INSERT INTO workspaces (id, name)
@@ -275,6 +274,21 @@ async def add_workspace(self, workspace_name: str) -> Optional[Workspace]:
             raise AlreadyExistsError(f"Workspace {workspace_name} already exists.")
         return added_workspace
 
+    async def update_workspace(self, workspace: Workspace) -> Workspace:
+        sql = text(
+            """
+            UPDATE workspaces SET
+            name = :name,
+            system_prompt = :system_prompt
+            WHERE id = :id
+            RETURNING *
+            """
+        )
+        updated_workspace = await self._execute_update_pydantic_model(
+            workspace, sql, should_raise=True
+        )
+        return updated_workspace
+
     async def update_session(self, session: Session) -> Optional[Session]:
         sql = text(
             """
@@ -392,11 +406,11 @@ async def get_workspaces(self) -> List[WorkspaceActive]:
         workspaces = await self._execute_select_pydantic_model(WorkspaceActive, sql)
         return workspaces
 
-    async def get_workspace_by_name(self, name: str) -> List[Workspace]:
+    async def get_workspace_by_name(self, name: str) -> Optional[Workspace]:
         sql = text(
             """
             SELECT
-                id, name
+                id, name, system_prompt
             FROM workspaces
             WHERE name = :name
             """
@@ -422,7 +436,7 @@ async def get_active_workspace(self) -> Optional[ActiveWorkspace]:
         sql = text(
             """
             SELECT
-                w.id, w.name, s.id as session_id, s.last_update
+                w.id, w.name, w.system_prompt, s.id as session_id, s.last_update
             FROM sessions s
             INNER JOIN workspaces w ON w.id = s.active_workspace_id
             """

src/codegate/db/models.py

@@ -43,6 +43,7 @@ class Setting(BaseModel):
 class Workspace(BaseModel):
     id: str
     name: str
+    system_prompt: Optional[str]
 
     @field_validator("name", mode="plain")
     @classmethod
@@ -98,5 +99,6 @@ class WorkspaceActive(BaseModel):
 class ActiveWorkspace(BaseModel):
     id: str
     name: str
+    system_prompt: Optional[str]
     session_id: str
     last_update: datetime.datetime

src/codegate/pipeline/cli/cli.py

@@ -8,7 +8,7 @@
     PipelineResult,
     PipelineStep,
 )
-from codegate.pipeline.cli.commands import Version, Workspace
+from codegate.pipeline.cli.commands import SystemPrompt, Version, Workspace
 
 HELP_TEXT = """
 ## CodeGate CLI\n
@@ -32,6 +32,7 @@ async def codegate_cli(command):
     available_commands = {
         "version": Version().exec,
         "workspace": Workspace().exec,
+        "system-prompt": SystemPrompt().exec,
     }
     out_func = available_commands.get(command[0])
     if out_func is None: