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import Store from './Store.ts'import type { Database, Collection } from "https://deno.land/x/mongo@v0.29.4/mod.ts";import type { SessionData } from '../Session.ts'
interface MongoSession {  id: string,  data: SessionData   }
export default class MongoStore implements Store {  db: Database  sessions: Collection<MongoSession>
  constructor(db : Database, collectionName = 'sessions') {    this.db = db    this.sessions = db.collection(collectionName)  }
  async sessionExists(sessionId : string) {    const session = await this.sessions.findOne({ id: sessionId })
    return session ? true : false  }
  async getSessionById(sessionId : string) {    const session = await this.sessions.findOne({ id: sessionId })
    return session ? session.data : null  }
  async createSession(sessionId : string, initialData : SessionData) {    await this.sessions.replaceOne(      { id: sessionId },      {        id: sessionId,        data: initialData      },      { upsert: true }    )  }
  async deleteSession(sessionId : string) {    await this.sessions.deleteOne({ id: sessionId })  }
  async persistSessionData(sessionId : string, sessionData : SessionData) {    await this.sessions.replaceOne(      { id: sessionId },      {        id: sessionId,        data: sessionData      },      { upsert: true }    )  }}