import { useMutation, useQueryClient } from '@tanstack/react-query';
import { useNostr } from '@nostrify/react';
import { useNostrPublish } from '@/hooks/useNostrPublish';
import { useCurrentUser } from '@/hooks/useCurrentUser';
import { useToast } from '@/hooks/useToast';
import { useTranslation } from '@/contexts/language';
import { onlyVerified } from '@/lib/verifyEvents';
import { removeLocalMute } from '@/lib/localMutes';
import { MUTE_LIST_KIND } from '@/hooks/useMuteList';

/** Remove a pubkey from the viewer's NIP-51 kind-10000 mute list. */
export function useUnmuteUser() {
  const { nostr } = useNostr();
  const { mutateAsync: publish } = useNostrPublish();
  const { user } = useCurrentUser();
  const { toast } = useToast();
  const { t } = useTranslation();
  const queryClient = useQueryClient();

  return useMutation({
    mutationFn: async (target: string) => {
      if (!user) throw new Error(t('walletUi.trust.loginToMute'));
      const events = onlyVerified(await nostr.query(
        [{ kinds: [MUTE_LIST_KIND], authors: [user.pubkey], limit: 1 }],
        { signal: AbortSignal.timeout(8000) },
      ));
      const existing = (events[0]?.tags ?? [])
        .filter(([name]) => name === 'p')
        .map(([, value]) => value)
        .filter((value) => value && value !== target);
      await publish({
        kind: MUTE_LIST_KIND,
        content: '',
        tags: existing.map((pk) => ['p', pk]),
      });
    },
    onSuccess: (_data, target) => {
      removeLocalMute(target);
      queryClient.invalidateQueries({ queryKey: ['mute-list', user?.pubkey] });
      queryClient.invalidateQueries();
      toast({ title: t('walletUi.trust.unmuted'), description: t('walletUi.trust.unmutedDesc') });
    },
    onError: (error) => {
      toast({
        title: t('walletUi.trust.unmuteFailed'),
        description: error instanceof Error ? error.message : undefined,
        variant: 'destructive',
      });
    },
  });
}