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import CryptoJS from 'https://cdn.skypack.dev/crypto-js@4.1.1'import Store from './Store.ts'import type { Context } from '../../deps.ts'import { SessionData } from '../Session.ts'
export default class CookieStore implements Store{  data: SessionData | null    encryptionKey: string | null  context : Context | null
  constructor(encryptionKey : string | null = null) {    this.data = null    this.encryptionKey = encryptionKey    this.context = null  }
  async insertSessionMiddlewareContext(ctx : Context) {    this.context = ctx
    const sessionDataString : string | undefined = await this.context.cookies.get('session_data')
    if (await this.sessionExists()) {      if (this.encryptionKey) {        const rawString = sessionDataString        let bytes = CryptoJS.AES.decrypt(rawString, this.encryptionKey)        let decryptedCookie : string = ''
        try {          decryptedCookie = bytes.toString(CryptoJS.enc.Utf8)        } catch (e) {          this.data = null        }                if (decryptedCookie) {          try {            this.data = JSON.parse(decryptedCookie)          } catch (e) {            this.data = null          }        }      } else {        try {          this.data = typeof sessionDataString == 'string' ? JSON.parse(sessionDataString) as SessionData : null        } catch (e) {          this.data = null        }      }    }  }
  async sessionExists() {    return await this.context?.cookies.get('session_data') ? true : false  }
  async getSessionById() {    return await this.context?.cookies.get('session_data') ? this.data : null  }
  createSession(id : string, initialData : SessionData) {    this.data = initialData  }
  async deleteSession(ctx : Context) {    await this.context?.cookies.delete('session_data')  }
  persistSessionData(id : string, sessionData : SessionData) {    this.data = sessionData  }
  async afterMiddlewareHook() {    if (this.encryptionKey) {      let cipherText = CryptoJS.AES.encrypt(JSON.stringify(this.data), this.encryptionKey).toString()      await this.context?.cookies.set('session_data', cipherText)    } else {      await this.context?.cookies.set('session_data', JSON.stringify(this.data))    }  }}