added Contact api and data model

python/api/__init__.py

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+"""FastAPI applications."""

python/api/contact_api.py

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+"""FastAPI interface for Contact database."""
+
+from collections.abc import AsyncIterator, Iterator
+from contextlib import asynccontextmanager
+from pathlib import Path
+from typing import Annotated
+
+from fastapi import Depends, FastAPI, HTTPException
+from fastapi.responses import FileResponse
+from fastapi.staticfiles import StaticFiles
+from pydantic import BaseModel
+from sqlalchemy import select
+from sqlalchemy.engine import Engine
+from sqlalchemy.orm import Session, selectinload
+
+from python.orm.base import get_postgres_engine
+from python.orm.contact import Contact, ContactRelationship, Need, RelationshipType
+
+FRONTEND_DIR = Path(__file__).parent.parent.parent / "frontend" / "dist"
+
+
+class NeedBase(BaseModel):
+    """Base schema for Need."""
+
+    name: str
+    description: str | None = None
+
+
+class NeedCreate(NeedBase):
+    """Schema for creating a Need."""
+
+
+class NeedResponse(NeedBase):
+    """Schema for Need response."""
+
+    id: int
+
+    model_config = {"from_attributes": True}
+
+
+class ContactRelationshipCreate(BaseModel):
+    """Schema for creating a contact relationship."""
+
+    related_contact_id: int
+    relationship_type: RelationshipType
+    closeness_weight: int | None = None
+
+
+class ContactRelationshipUpdate(BaseModel):
+    """Schema for updating a contact relationship."""
+
+    relationship_type: RelationshipType | None = None
+    closeness_weight: int | None = None
+
+
+class ContactRelationshipResponse(BaseModel):
+    """Schema for contact relationship response."""
+
+    contact_id: int
+    related_contact_id: int
+    relationship_type: str
+    closeness_weight: int
+
+    model_config = {"from_attributes": True}
+
+
+class RelationshipTypeInfo(BaseModel):
+    """Information about a relationship type."""
+
+    value: str
+    display_name: str
+    default_weight: int
+
+
+class GraphNode(BaseModel):
+    """Node in the relationship graph."""
+
+    id: int
+    name: str
+    current_job: str | None = None
+
+
+class GraphEdge(BaseModel):
+    """Edge in the relationship graph."""
+
+    source: int
+    target: int
+    relationship_type: str
+    closeness_weight: int
+
+
+class GraphData(BaseModel):
+    """Complete graph data for visualization."""
+
+    nodes: list[GraphNode]
+    edges: list[GraphEdge]
+
+
+class ContactBase(BaseModel):
+    """Base schema for Contact."""
+
+    name: str
+    age: int | None = None
+    bio: str | None = None
+    current_job: str | None = None
+    gender: str | None = None
+    goals: str | None = None
+    legal_name: str | None = None
+    profile_pic: str | None = None
+    safe_conversation_starters: str | None = None
+    self_sufficiency_score: int | None = None
+    social_structure_style: str | None = None
+    ssn: str | None = None
+    suffix: str | None = None
+    timezone: str | None = None
+    topics_to_avoid: str | None = None
+
+
+class ContactCreate(ContactBase):
+    """Schema for creating a Contact."""
+
+    need_ids: list[int] = []
+
+
+class ContactUpdate(BaseModel):
+    """Schema for updating a Contact."""
+
+    name: str | None = None
+    age: int | None = None
+    bio: str | None = None
+    current_job: str | None = None
+    gender: str | None = None
+    goals: str | None = None
+    legal_name: str | None = None
+    profile_pic: str | None = None
+    safe_conversation_starters: str | None = None
+    self_sufficiency_score: int | None = None
+    social_structure_style: str | None = None
+    ssn: str | None = None
+    suffix: str | None = None
+    timezone: str | None = None
+    topics_to_avoid: str | None = None
+    need_ids: list[int] | None = None
+
+
+class ContactResponse(ContactBase):
+    """Schema for Contact response with relationships."""
+
+    id: int
+    needs: list[NeedResponse] = []
+    related_to: list[ContactRelationshipResponse] = []
+    related_from: list[ContactRelationshipResponse] = []
+
+    model_config = {"from_attributes": True}
+
+
+class ContactListResponse(ContactBase):
+    """Schema for Contact list response."""
+
+    id: int
+
+    model_config = {"from_attributes": True}
+
+
+class DatabaseSession:
+    """Database session manager."""
+
+    def __init__(self) -> None:
+        """Initialize with no engine."""
+        self._engine: Engine | None = None
+
+    @property
+    def engine(self) -> Engine:
+        """Get or create the database engine."""
+        if self._engine is None:
+            self._engine = get_postgres_engine()
+        return self._engine
+
+    def get_session(self) -> Iterator[Session]:
+        """Yield a database session."""
+        with Session(self.engine) as session:
+            yield session
+
+    def dispose(self) -> None:
+        """Dispose of the engine."""
+        if self._engine is not None:
+            self._engine.dispose()
+            self._engine = None
+
+
+db_manager = DatabaseSession()
+
+
+def get_db() -> Iterator[Session]:
+    """Get database session dependency."""
+    yield from db_manager.get_session()
+
+
+DbSession = Annotated[Session, Depends(get_db)]
+
+
+@asynccontextmanager
+async def lifespan(_: FastAPI) -> AsyncIterator[None]:
+    """Manage application lifespan."""
+    yield
+    db_manager.dispose()
+
+
+app = FastAPI(title="Contact Database API", lifespan=lifespan)
+
+
+# API routes
+@app.post("/api/needs", response_model=NeedResponse)
+def create_need(need: NeedCreate, db: DbSession) -> Need:
+    """Create a new need."""
+    db_need = Need(name=need.name, description=need.description)
+    db.add(db_need)
+    db.commit()
+    db.refresh(db_need)
+    return db_need
+
+
+@app.get("/api/needs", response_model=list[NeedResponse])
+def list_needs(db: DbSession) -> list[Need]:
+    """List all needs."""
+    return list(db.scalars(select(Need)).all())
+
+
+@app.get("/api/needs/{need_id}", response_model=NeedResponse)
+def get_need(need_id: int, db: DbSession) -> Need:
+    """Get a need by ID."""
+    need = db.get(Need, need_id)
+    if not need:
+        raise HTTPException(status_code=404, detail="Need not found")
+    return need
+
+
+@app.delete("/api/needs/{need_id}")
+def delete_need(need_id: int, db: DbSession) -> dict[str, bool]:
+    """Delete a need by ID."""
+    need = db.get(Need, need_id)
+    if not need:
+        raise HTTPException(status_code=404, detail="Need not found")
+    db.delete(need)
+    db.commit()
+    return {"deleted": True}
+
+
+@app.post("/api/contacts", response_model=ContactResponse)
+def create_contact(contact: ContactCreate, db: DbSession) -> Contact:
+    """Create a new contact."""
+    need_ids = contact.need_ids
+    contact_data = contact.model_dump(exclude={"need_ids"})
+    db_contact = Contact(**contact_data)
+
+    if need_ids:
+        needs = list(db.scalars(select(Need).where(Need.id.in_(need_ids))).all())
+        db_contact.needs = needs
+
+    db.add(db_contact)
+    db.commit()
+    db.refresh(db_contact)
+    return db_contact
+
+
+@app.get("/api/contacts", response_model=list[ContactListResponse])
+def list_contacts(
+    db: DbSession,
+    skip: int = 0,
+    limit: int = 100,
+) -> list[Contact]:
+    """List all contacts with pagination."""
+    return list(db.scalars(select(Contact).offset(skip).limit(limit)).all())
+
+
+@app.get("/api/contacts/{contact_id}", response_model=ContactResponse)
+def get_contact(contact_id: int, db: DbSession) -> Contact:
+    """Get a contact by ID with all relationships."""
+    contact = db.scalar(
+        select(Contact)
+        .where(Contact.id == contact_id)
+        .options(
+            selectinload(Contact.needs),
+            selectinload(Contact.related_to),
+            selectinload(Contact.related_from),
+        )
+    )
+    if not contact:
+        raise HTTPException(status_code=404, detail="Contact not found")
+    return contact
+
+
+@app.patch("/api/contacts/{contact_id}", response_model=ContactResponse)
+def update_contact(
+    contact_id: int,
+    contact: ContactUpdate,
+    db: DbSession,
+) -> Contact:
+    """Update a contact by ID."""
+    db_contact = db.get(Contact, contact_id)
+    if not db_contact:
+        raise HTTPException(status_code=404, detail="Contact not found")
+
+    update_data = contact.model_dump(exclude_unset=True)
+    need_ids = update_data.pop("need_ids", None)
+
+    for key, value in update_data.items():
+        setattr(db_contact, key, value)
+
+    if need_ids is not None:
+        needs = list(db.scalars(select(Need).where(Need.id.in_(need_ids))).all())
+        db_contact.needs = needs
+
+    db.commit()
+    db.refresh(db_contact)
+    return db_contact
+
+
+@app.delete("/api/contacts/{contact_id}")
+def delete_contact(contact_id: int, db: DbSession) -> dict[str, bool]:
+    """Delete a contact by ID."""
+    contact = db.get(Contact, contact_id)
+    if not contact:
+        raise HTTPException(status_code=404, detail="Contact not found")
+    db.delete(contact)
+    db.commit()
+    return {"deleted": True}
+
+
+@app.post("/api/contacts/{contact_id}/needs/{need_id}")
+def add_need_to_contact(
+    contact_id: int,
+    need_id: int,
+    db: DbSession,
+) -> dict[str, bool]:
+    """Add a need to a contact."""
+    contact = db.get(Contact, contact_id)
+    if not contact:
+        raise HTTPException(status_code=404, detail="Contact not found")
+
+    need = db.get(Need, need_id)
+    if not need:
+        raise HTTPException(status_code=404, detail="Need not found")
+
+    if need not in contact.needs:
+        contact.needs.append(need)
+        db.commit()
+
+    return {"added": True}
+
+
+@app.delete("/api/contacts/{contact_id}/needs/{need_id}")
+def remove_need_from_contact(
+    contact_id: int,
+    need_id: int,
+    db: DbSession,
+) -> dict[str, bool]:
+    """Remove a need from a contact."""
+    contact = db.get(Contact, contact_id)
+    if not contact:
+        raise HTTPException(status_code=404, detail="Contact not found")
+
+    need = db.get(Need, need_id)
+    if not need:
+        raise HTTPException(status_code=404, detail="Need not found")
+
+    if need in contact.needs:
+        contact.needs.remove(need)
+        db.commit()
+
+    return {"removed": True}
+
+
+@app.post(
+    "/api/contacts/{contact_id}/relationships",
+    response_model=ContactRelationshipResponse,
+)
+def add_contact_relationship(
+    contact_id: int,
+    relationship: ContactRelationshipCreate,
+    db: DbSession,
+) -> ContactRelationship:
+    """Add a relationship between two contacts."""
+    contact = db.get(Contact, contact_id)
+    if not contact:
+        raise HTTPException(status_code=404, detail="Contact not found")
+
+    related_contact = db.get(Contact, relationship.related_contact_id)
+    if not related_contact:
+        raise HTTPException(status_code=404, detail="Related contact not found")
+
+    if contact_id == relationship.related_contact_id:
+        raise HTTPException(status_code=400, detail="Cannot relate contact to itself")
+
+    # Use provided weight or default from relationship type
+    weight = relationship.closeness_weight
+    if weight is None:
+        weight = relationship.relationship_type.default_weight
+
+    db_relationship = ContactRelationship(
+        contact_id=contact_id,
+        related_contact_id=relationship.related_contact_id,
+        relationship_type=relationship.relationship_type.value,
+        closeness_weight=weight,
+    )
+    db.add(db_relationship)
+    db.commit()
+    db.refresh(db_relationship)
+    return db_relationship
+
+
+@app.get(
+    "/api/contacts/{contact_id}/relationships",
+    response_model=list[ContactRelationshipResponse],
+)
+def get_contact_relationships(
+    contact_id: int,
+    db: DbSession,
+) -> list[ContactRelationship]:
+    """Get all relationships for a contact."""
+    contact = db.get(Contact, contact_id)
+    if not contact:
+        raise HTTPException(status_code=404, detail="Contact not found")
+
+    outgoing = list(
+        db.scalars(
+            select(ContactRelationship).where(ContactRelationship.contact_id == contact_id)
+        ).all()
+    )
+    incoming = list(
+        db.scalars(
+            select(ContactRelationship).where(ContactRelationship.related_contact_id == contact_id)
+        ).all()
+    )
+    return outgoing + incoming
+
+
+@app.patch(
+    "/api/contacts/{contact_id}/relationships/{related_contact_id}",
+    response_model=ContactRelationshipResponse,
+)
+def update_contact_relationship(
+    contact_id: int,
+    related_contact_id: int,
+    update: ContactRelationshipUpdate,
+    db: DbSession,
+) -> ContactRelationship:
+    """Update a relationship between two contacts."""
+    relationship = db.scalar(
+        select(ContactRelationship).where(
+            ContactRelationship.contact_id == contact_id,
+            ContactRelationship.related_contact_id == related_contact_id,
+        )
+    )
+    if not relationship:
+        raise HTTPException(status_code=404, detail="Relationship not found")
+
+    if update.relationship_type is not None:
+        relationship.relationship_type = update.relationship_type.value
+    if update.closeness_weight is not None:
+        relationship.closeness_weight = update.closeness_weight
+
+    db.commit()
+    db.refresh(relationship)
+    return relationship
+
+
+@app.delete("/api/contacts/{contact_id}/relationships/{related_contact_id}")
+def remove_contact_relationship(
+    contact_id: int,
+    related_contact_id: int,
+    db: DbSession,
+) -> dict[str, bool]:
+    """Remove a relationship between two contacts."""
+    relationship = db.scalar(
+        select(ContactRelationship).where(
+            ContactRelationship.contact_id == contact_id,
+            ContactRelationship.related_contact_id == related_contact_id,
+        )
+    )
+    if not relationship:
+        raise HTTPException(status_code=404, detail="Relationship not found")
+
+    db.delete(relationship)
+    db.commit()
+    return {"deleted": True}
+
+
+@app.get("/api/relationship-types")
+def list_relationship_types() -> list[RelationshipTypeInfo]:
+    """List all available relationship types with their default weights."""
+    return [
+        RelationshipTypeInfo(
+            value=rt.value,
+            display_name=rt.display_name,
+            default_weight=rt.default_weight,
+        )
+        for rt in RelationshipType
+    ]
+
+
+@app.get("/api/graph")
+def get_relationship_graph(db: DbSession) -> GraphData:
+    """Get all contacts and relationships as graph data for visualization."""
+    contacts = list(db.scalars(select(Contact)).all())
+    relationships = list(db.scalars(select(ContactRelationship)).all())
+
+    nodes = [
+        GraphNode(id=c.id, name=c.name, current_job=c.current_job)
+        for c in contacts
+    ]
+
+    edges = [
+        GraphEdge(
+            source=rel.contact_id,
+            target=rel.related_contact_id,
+            relationship_type=rel.relationship_type,
+            closeness_weight=rel.closeness_weight,
+        )
+        for rel in relationships
+    ]
+
+    return GraphData(nodes=nodes, edges=edges)
+
+
+# Serve React frontend
+if FRONTEND_DIR.exists():
+    app.mount("/assets", StaticFiles(directory=FRONTEND_DIR / "assets"), name="assets")
+
+    @app.get("/{full_path:path}")
+    async def serve_spa(full_path: str) -> FileResponse:
+        """Serve React SPA for all non-API routes."""
+        file_path = FRONTEND_DIR / full_path
+        if file_path.is_file():
+            return FileResponse(file_path)
+        return FileResponse(FRONTEND_DIR / "index.html")