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"""Group endpoints — /v1/groups/*"""
from fastapi import APIRouter, Depends, HTTPException, Request
from pydantic import BaseModel
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession
from meshbay_hub.api.deps import get_current_user
from meshbay_hub.db.engine import get_db
from meshbay_hub.db.models import (
FederatedGroup, GEKBundle, Group, GroupMember,
IPLog, SwarmSource, User,
)
router = APIRouter(prefix="/v1/groups", tags=["groups"])
@router.get("")
async def list_public_groups(
db: AsyncSession = Depends(get_db),
limit: int = 50,
offset: int = 0,
include_federated: bool = True,
):
"""List public groups — local and optionally federated. No auth required."""
result = await db.execute(
select(Group)
.where(Group.visibility == "public", Group.status == "active")
.order_by(Group.created_at.desc())
.limit(limit).offset(offset)
)
local = result.scalars().all()
groups = [
{
"id": g.id, "name": g.name, "join_policy": g.join_policy,
"created_at": g.created_at.isoformat(), "source": "local",
}
for g in local
]
if include_federated:
fed_result = await db.execute(
select(FederatedGroup)
.order_by(FederatedGroup.updated_at.desc())
.limit(limit)
)
for fg in fed_result.scalars().all():
groups.append({
"id": fg.id, "name": fg.name, "join_policy": fg.join_policy,
"updated_at": fg.updated_at.isoformat(), "source": fg.source_hub,
})
return {"groups": groups, "total": len(groups)}
# ── Swarm (content replication) ───────────────────────────────────────────────
class SwarmRegisterRequest(BaseModel):
content_hash: str # blake3 hex
endpoint: str # "ip:port"
@router.post("/v1/swarm/register", status_code=201)
async def swarm_register(
body: SwarmRegisterRequest,
current_user: User = Depends(get_current_user),
db: AsyncSession = Depends(get_db),
):
"""Node registers itself as a source for a content hash (public swarm)."""
from datetime import datetime, timezone
node_result = await db.execute(
select(User).where(User.id == current_user.id))
# Use current_user.id as node_id for simplicity
existing = await db.get(SwarmSource, (body.content_hash, current_user.id))
now = datetime.now(timezone.utc)
if existing:
existing.endpoint = body.endpoint
existing.last_seen = now
else:
db.add(SwarmSource(
content_hash=body.content_hash,
node_id=current_user.id,
endpoint=body.endpoint,
))
await db.commit()
return {"status": "registered", "hash": body.content_hash}
@router.get("/v1/swarm/{content_hash}")
async def swarm_sources(
content_hash: str,
db: AsyncSession = Depends(get_db),
):
"""Return list of nodes that can serve a content hash."""
from datetime import datetime, timezone, timedelta
cutoff = datetime.now(timezone.utc) - timedelta(minutes=30)
result = await db.execute(
select(SwarmSource)
.where(
SwarmSource.content_hash == content_hash,
SwarmSource.last_seen > cutoff,
)
)
sources = result.scalars().all()
return {
"hash": content_hash,
"sources": [{"node_id": s.node_id, "endpoint": s.endpoint} for s in sources],
}
class GroupCreateRequest(BaseModel):
name: str
visibility: str = "private" # public|private
join_policy: str = "invite" # open|request|invite
class GEKBundleRequest(BaseModel):
pk_eph_b64: str
nonce_b64: str
wrapped_b64: str
@router.post("", status_code=201)
async def create_group(
body: GroupCreateRequest,
request: Request,
current_user: User = Depends(get_current_user),
db: AsyncSession = Depends(get_db),
):
group = Group(
name=body.name,
admin_id=current_user.id,
visibility=body.visibility,
join_policy=body.join_policy,
)
db.add(group)
await db.flush() # get group.id
db.add(GroupMember(group_id=group.id, user_id=current_user.id))
db.add(IPLog(user_id=current_user.id, event="group_create",
ip_address=_ip(request), detail=body.name))
await db.commit()
await db.refresh(group)
return {"group_id": group.id, "name": group.name}
@router.post("/{group_id}/members/{username}/gek", status_code=201)
async def store_gek_bundle(
group_id: str,
username: str,
body: GEKBundleRequest,
current_user: User = Depends(get_current_user),
db: AsyncSession = Depends(get_db),
):
group = await db.get(Group, group_id)
if not group:
raise HTTPException(status_code=404, detail="Group not found")
if group.admin_id != current_user.id:
raise HTTPException(status_code=403, detail="Only admin can add members")
result = await db.execute(select(User).where(User.username == username))
target = result.scalar_one_or_none()
if not target:
raise HTTPException(status_code=404, detail="User not found")
# Upsert GEK bundle
existing = await db.get(GEKBundle, (group_id, target.id))
if existing:
existing.pk_eph_b64 = body.pk_eph_b64
existing.nonce_b64 = body.nonce_b64
existing.wrapped_b64 = body.wrapped_b64
else:
db.add(GEKBundle(
group_id=group_id,
user_id=target.id,
pk_eph_b64=body.pk_eph_b64,
nonce_b64=body.nonce_b64,
wrapped_b64=body.wrapped_b64,
))
# Add member if not already in group
mem = await db.get(GroupMember, (group_id, target.id))
if not mem:
db.add(GroupMember(group_id=group_id, user_id=target.id))
await db.commit()
return {"status": "stored", "group_id": group_id, "username": username}
@router.get("/{group_id}/gek")
async def get_my_gek_bundle(
group_id: str,
current_user: User = Depends(get_current_user),
db: AsyncSession = Depends(get_db),
):
group = await db.get(Group, group_id)
if not group:
raise HTTPException(status_code=404, detail="Group not found")
bundle = await db.get(GEKBundle, (group_id, current_user.id))
if not bundle:
raise HTTPException(status_code=404, detail="No GEK bundle for this user in this group")
return {
"group_id": group_id,
"pk_eph_b64": bundle.pk_eph_b64,
"nonce_b64": bundle.nonce_b64,
"wrapped_b64": bundle.wrapped_b64,
}
def _ip(request: Request) -> str:
fwd = request.headers.get("X-Forwarded-For")
return fwd.split(",")[0].strip() if fwd else (
request.client.host if request.client else "unknown")
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