feat: add new categories endpoint (#4184)

* ✨ (endpoints.py): Add new endpoint to retrieve sidebar categories for the frontend application.

* 📝 (schemas.py): add SidebarCategory and SidebarCategoriesResponse models to define sidebar categories and response structure for API endpoint.

* ✨ (constants.py): Add sidebar categories with display names, names, icons, and beta status for different components to enhance the user interface and navigation experience.

* 📝 (constants.py): Update icons names to use proper casing for consistency and clarity in the code.

src/backend/base/langflow/api/v1/endpoints.py

@@ -18,6 +18,7 @@ from langflow.api.v1.schemas import (
     InputValueRequest,
     ProcessResponse,
     RunResponse,
+    SidebarCategoriesResponse,
     SimplifiedAPIRequest,
     TaskStatusResponse,
     UpdateCustomComponentRequest,
@@ -49,6 +50,7 @@ from langflow.services.deps import (
 from langflow.services.session.service import SessionService
 from langflow.services.telemetry.schema import RunPayload
 from langflow.services.telemetry.service import TelemetryService
+from langflow.utils.constants import SIDEBAR_CATEGORIES
 from langflow.utils.version import get_version_info
 
 if TYPE_CHECKING:
@@ -640,3 +642,8 @@ def get_config():
         return settings_service.settings.model_dump()
     except Exception as exc:
         raise HTTPException(status_code=500, detail=str(exc)) from exc
+
+
+@router.get("/sidebar_categories", response_model=SidebarCategoriesResponse)
+def get_sidebar_categories():
+    return SidebarCategoriesResponse(categories=SIDEBAR_CATEGORIES)

src/backend/base/langflow/api/v1/schemas.py

@@ -355,3 +355,14 @@ class ConfigResponse(BaseModel):
     auto_saving_interval: int
     health_check_max_retries: int
     max_file_size_upload: int
+
+
+class SidebarCategory(BaseModel):
+    display_name: str
+    name: str
+    icon: str
+    beta: bool
+
+
+class SidebarCategoriesResponse(BaseModel):
+    categories: list[SidebarCategory]

src/backend/base/langflow/utils/constants.py

@@ -175,3 +175,139 @@ MESSAGE_SENDER_NAME_AI = "AI"
 MESSAGE_SENDER_NAME_USER = "User"
 
 MAX_TEXT_LENGTH = 99999
+
+
+SIDEBAR_CATEGORIES = [
+    {
+        "display_name": "Saved",
+        "name": "saved_components",
+        "icon": "GradientSave",
+        "beta": False,
+    },
+    {
+        "display_name": "Inputs",
+        "name": "inputs",
+        "icon": "Download",
+        "beta": False,
+    },
+    {
+        "display_name": "Outputs",
+        "name": "outputs",
+        "icon": "Upload",
+        "beta": False,
+    },
+    {
+        "display_name": "Prompts",
+        "name": "prompts",
+        "icon": "TerminalSquare",
+        "beta": False,
+    },
+    {
+        "display_name": "Data",
+        "name": "data",
+        "icon": "Database",
+        "beta": False,
+    },
+    {
+        "display_name": "Models",
+        "name": "models",
+        "icon": "BrainCircuit",
+        "beta": False,
+    },
+    {
+        "display_name": "Helpers",
+        "name": "helpers",
+        "icon": "Wand2",
+        "beta": False,
+    },
+    {
+        "display_name": "Vector Stores",
+        "name": "vectorstores",
+        "icon": "Layers",
+        "beta": False,
+    },
+    {
+        "display_name": "Embeddings",
+        "name": "embeddings",
+        "icon": "Binary",
+        "beta": False,
+    },
+    {
+        "display_name": "Agents",
+        "name": "agents",
+        "icon": "Bot",
+        "beta": True,
+    },
+    {
+        "display_name": "Astra Assistants",
+        "name": "astra_assistants",
+        "icon": "Sparkles",
+        "beta": True,
+    },
+    {
+        "display_name": "Chains",
+        "name": "chains",
+        "icon": "Link",
+        "beta": True,
+    },
+    {
+        "display_name": "Loaders",
+        "name": "documentloaders",
+        "icon": "Paperclip",
+        "beta": True,
+    },
+    {
+        "display_name": "Utilities",
+        "name": "langchain_utilities",
+        "icon": "PocketKnife",
+        "beta": True,
+    },
+    {
+        "display_name": "Link Extractors",
+        "name": "link_extractors",
+        "icon": "Link2",
+        "beta": True,
+    },
+    {
+        "display_name": "Memories",
+        "name": "memories",
+        "icon": "Cpu",
+        "beta": True,
+    },
+    {
+        "display_name": "Output Parsers",
+        "name": "output_parsers",
+        "icon": "Compass",
+        "beta": True,
+    },
+    {
+        "display_name": "Prototypes",
+        "name": "prototypes",
+        "icon": "FlaskConical",
+        "beta": True,
+    },
+    {
+        "display_name": "Retrievers",
+        "name": "retrievers",
+        "icon": "FileSearch",
+        "beta": True,
+    },
+    {
+        "display_name": "Text Splitters",
+        "name": "textsplitters",
+        "icon": "Scissors",
+        "beta": True,
+    },
+    {
+        "display_name": "Toolkits",
+        "name": "toolkits",
+        "icon": "Package2",
+        "beta": True,
+    },
+    {
+        "display_name": "Tools",
+        "name": "tools",
+        "icon": "Hammer",
+        "beta": True,
+    },
+]