from chain_service.database.database import Database


class RunningChainRepository:

    def __init__(self, database: Database):
        self.collection = database.get_collection("running_chains")

    async def add(self, chain_id: str):
        query = payload = {"chainId": chain_id}
        await self.collection.replace_one(query, payload, upsert=True)

    async def exists(self, chain_id: str) -> bool:
        query = {"chainId": chain_id}
        return bool(await self.collection.find_one(query))

    async def delete(self, chain_id: str):
        query = {"chainId": chain_id}
        await self.collection.delete_one(query)