feat: rebuild work queue api with fastapi and postgres

app/routers/projects.py

@@ -0,0 +1,63 @@
+from uuid import uuid4
+
+from fastapi import APIRouter, HTTPException
+
+from app.db import fetch_project_or_404, get_conn, utcnow
+from app.models import Project, ProjectCreate, ProjectUpdate
+
+router = APIRouter(prefix="/projects", tags=["projects"])
+
+
+@router.post("", response_model=Project, status_code=201)
+def create_project(payload: ProjectCreate) -> Project:
+    if not payload.name.strip():
+        raise HTTPException(status_code=400, detail="name is required")
+    now = utcnow()
+    record = {
+        "id": str(uuid4()),
+        "name": payload.name.strip(),
+        "external_ref": payload.external_ref,
+        "created_at": now,
+        "updated_at": now,
+    }
+    with get_conn() as conn:
+        conn.execute(
+            "INSERT INTO projects (id, name, external_ref, created_at, updated_at) VALUES (%s, %s, %s, %s, %s)",
+            (record["id"], record["name"], record["external_ref"], record["created_at"], record["updated_at"]),
+        )
+        conn.commit()
+    return Project.model_validate(record)
+
+
+@router.get("", response_model=list[Project])
+def list_projects() -> list[Project]:
+    with get_conn() as conn:
+        rows = conn.execute(
+            "SELECT id, name, external_ref, created_at, updated_at FROM projects ORDER BY created_at ASC"
+        ).fetchall()
+    return [Project.model_validate(row) for row in rows]
+
+
+@router.get("/{project_id}", response_model=Project)
+def get_project(project_id: str) -> Project:
+    with get_conn() as conn:
+        return Project.model_validate(fetch_project_or_404(conn, project_id))
+
+
+@router.patch("/{project_id}", response_model=Project)
+def update_project(project_id: str, payload: ProjectUpdate) -> Project:
+    with get_conn() as conn:
+        current = fetch_project_or_404(conn, project_id)
+        if payload.name is not None:
+            if not payload.name.strip():
+                raise HTTPException(status_code=400, detail="name cannot be empty")
+            current["name"] = payload.name.strip()
+        if payload.external_ref is not None:
+            current["external_ref"] = payload.external_ref
+        current["updated_at"] = utcnow()
+        conn.execute(
+            "UPDATE projects SET name = %s, external_ref = %s, updated_at = %s WHERE id = %s",
+            (current["name"], current["external_ref"], current["updated_at"], project_id),
+        )
+        conn.commit()
+        return Project.model_validate(current)