import { useState } from 'react'
import { nostrService } from '@/lib/nostr'
import { articlePublisher } from '@/lib/articlePublisher'
import type { Article } from '@/types/nostr'

interface AuthorPresentationDraft {
  presentation: string
  contentDescription: string
  mainnetAddress: string
  pictureUrl?: string
}

export function useAuthorPresentation(pubkey: string | null) {
  const [loading, setLoading] = useState(false)
  const [error, setError] = useState<string | null>(null)
  const [success, setSuccess] = useState(false)

  const publishPresentation = async (draft: AuthorPresentationDraft): Promise<void> => {
    if (!pubkey) {
      setError('Clé publique non disponible')
      return
    }

    setLoading(true)
    setError(null)

    try {
      const privateKey = nostrService.getPrivateKey()
      if (!privateKey) {
        setError('Clé privée requise pour publier. Veuillez vous connecter avec un portefeuille Nostr qui fournit des capacités de signature.')
        setLoading(false)
        return
      }

      // Create presentation article
      const title = `Présentation de ${nostrService.getPublicKey()?.substring(0, 16)}...`
      const preview = draft.presentation.substring(0, 200)
      const fullContent = `${draft.presentation}\n\n---\n\nDescription du contenu :\n${draft.contentDescription}`

      const result = await articlePublisher.publishPresentationArticle(
        {
          title,
          preview,
          content: fullContent,
          presentation: draft.presentation,
          contentDescription: draft.contentDescription,
          mainnetAddress: draft.mainnetAddress,
        },
        pubkey,
        privateKey
      )

      if (result.success) {
        setSuccess(true)
      } else {
        setError(result.error ?? 'Erreur lors de la publication')
      }
    } catch (e) {
      const errorMessage = e instanceof Error ? e.message : 'Erreur inconnue'
      console.error('Error publishing presentation:', e)
      setError(errorMessage)
    } finally {
      setLoading(false)
    }
  }

  const checkPresentationExists = async (): Promise<Article | null> => {
    if (!pubkey) {
      return null
    }

    try {
      return await articlePublisher.getAuthorPresentation(pubkey)
    } catch (e) {
      console.error('Error checking presentation:', e)
      return null
    }
  }

  return {
    loading,
    error,
    success,
    publishPresentation,
    checkPresentationExists,
  }
}