import type { CachedMetadata } from "."
import { FeedCache, type CacheStore } from "@snort/shared"

export class UserProfileCache extends FeedCache<CachedMetadata> {
  constructor(store?: CacheStore<CachedMetadata>) {
    super("UserCache", store)
  }

  key(of: CachedMetadata): string {
    return of.pubkey
  }

  override async preload(follows?: Array<string>): Promise<void> {
    await super.preload()
    // load follows profiles
    if (follows) {
      await this.buffer(follows)
    }
  }

  async search(q: string): Promise<Array<CachedMetadata>> {
    const lowerQ = q.toLowerCase()
    return [...this.cache.values()]
      .filter(user => {
        const profile = user as CachedMetadata
        return (
          profile.name?.toLowerCase().includes(lowerQ) ||
          profile.display_name?.toLowerCase().includes(lowerQ) ||
          profile.nip05?.toLowerCase().includes(lowerQ)
        )
      })
      .slice(0, 5)
  }

  takeSnapshot(): CachedMetadata[] {
    return [...this.cache.values()]
  }
}