"use client";

import { Book, BookOpen, BookMarked, BookX, Star, StarOff, User } from "lucide-react";
import type { NormalizedSeries } from "@/lib/providers/types";
import { useState, useEffect } from "react";
import { useToast } from "@/components/ui/use-toast";
import { RefreshButton } from "@/components/library/RefreshButton";
import { AppError } from "@/utils/errors";
import { ERROR_CODES } from "@/constants/errorCodes";
import { getErrorMessage } from "@/utils/errors";
import { useTranslate } from "@/hooks/useTranslate";
import { SeriesCover } from "@/components/ui/series-cover";
import { StatusBadge } from "@/components/ui/status-badge";
import { IconButton } from "@/components/ui/icon-button";
import logger from "@/lib/logger";
import { addToFavorites, removeFromFavorites } from "@/app/actions/favorites";
import { useAnonymous } from "@/contexts/AnonymousContext";

interface SeriesHeaderProps {
  series: NormalizedSeries;
  refreshSeries: (seriesId: string) => Promise<{ success: boolean; error?: string }>;
  initialIsFavorite: boolean;
}

export const SeriesHeader = ({ series, refreshSeries, initialIsFavorite }: SeriesHeaderProps) => {
  const { toast } = useToast();
  const { isAnonymous } = useAnonymous();
  const [isFavorite, setIsFavorite] = useState(initialIsFavorite);
  const [isDescriptionExpanded, setIsDescriptionExpanded] = useState(false);
  const { t } = useTranslate();

  useEffect(() => {
    setIsFavorite(initialIsFavorite);
  }, [series.id, initialIsFavorite]);

  const handleToggleFavorite = async () => {
    try {
      const action = isFavorite ? removeFromFavorites : addToFavorites;
      const result = await action(series.id);

      if (result.success) {
        setIsFavorite(!isFavorite);
        // Dispatcher l'événement avec le seriesId pour mise à jour optimiste de la sidebar
        const event = new CustomEvent("favoritesChanged", {
          detail: {
            seriesId: series.id,
            action: isFavorite ? "remove" : "add",
            series: isFavorite ? undefined : series,
          },
        });
        window.dispatchEvent(event);
        toast({
          title: t(isFavorite ? "series.header.favorite.remove" : "series.header.favorite.add"),
          description: series.name,
        });
      } else {
        throw new AppError(
          isFavorite ? ERROR_CODES.FAVORITE.DELETE_ERROR : ERROR_CODES.FAVORITE.ADD_ERROR
        );
      }
    } catch (error) {
      logger.error({ err: error }, "Erreur lors de la modification des favoris:");
      toast({
        title: "Erreur",
        description:
          error instanceof AppError
            ? error.message
            : getErrorMessage(ERROR_CODES.FAVORITE.NETWORK_ERROR),
        variant: "destructive",
      });
    }
  };

  const getReadingStatusInfo = () => {
    const { bookCount, booksReadCount } = series;
    const booksUnreadCount = bookCount - booksReadCount;
    const booksInProgressCount = bookCount - (booksReadCount + booksUnreadCount);

    if (booksReadCount === bookCount) {
      return {
        label: t("series.header.status.read"),
        status: "success" as const,
        icon: BookMarked,
      };
    }

    if (booksInProgressCount > 0 || (booksReadCount > 0 && booksReadCount < bookCount)) {
      return {
        label: t("series.header.status.progress", {
          read: booksReadCount,
          total: bookCount,
        }),
        status: "reading" as const,
        icon: BookOpen,
      };
    }

    return {
      label: t("series.header.status.unread"),
      status: "unread" as const,
      icon: Book,
    };
  };

  const statusInfo = isAnonymous ? null : getReadingStatusInfo();
  const authorsText = series.authors?.length
    ? series.authors.map((a) => a.name).join(", ")
    : null;

  return (
    <div className="relative min-h-[300px] w-screen -ml-[calc((100vw-100%)/2)] overflow-hidden">
      {/* Image de fond */}
      <div className="absolute inset-0">
        <SeriesCover
          series={series}
          alt={t("series.header.coverAlt", { title: series.name })}
          className="blur-sm scale-105 brightness-50"
          showProgressUi={false}
        />
      </div>

      {/* Contenu */}
      <div className="relative container mx-auto px-4 py-8">
        <div className="flex flex-col md:flex-row gap-6 items-center md:items-start w-full">
          {/* Image principale */}
          <div className="relative w-[180px] aspect-[2/3] rounded-lg overflow-hidden shadow-lg bg-muted/80 backdrop-blur-md flex-shrink-0">
            <SeriesCover
              series={series}
              alt={t("series.header.coverAlt", { title: series.name })}
              showProgressUi={false}
            />
          </div>

          {/* Informations */}
          <div className="flex-1 text-white space-y-2 text-center md:text-left">
            <h1 className="text-2xl md:text-3xl font-bold">{series.name}</h1>
            {authorsText && (
              <p className="text-white/70 text-sm flex items-center gap-1 justify-center md:justify-start">
                <User className="h-3.5 w-3.5 flex-shrink-0" />
                {authorsText}
              </p>
            )}
            {series.summary && (
              <div>
                <p className={`text-white/80 text-sm md:text-base ${isDescriptionExpanded ? "max-h-[200px] overflow-y-auto" : "line-clamp-3"}`}>
                  {series.summary}
                </p>
                <button
                  onClick={() => setIsDescriptionExpanded(!isDescriptionExpanded)}
                  className="text-white/60 hover:text-white/90 text-xs mt-1 transition-colors"
                >
                  {t(isDescriptionExpanded ? "series.header.showLess" : "series.header.showMore")}
                </button>
              </div>
            )}
            <div className="flex items-center gap-4 mt-4 justify-center md:justify-start flex-wrap">
              {statusInfo && (
                <StatusBadge status={statusInfo.status} icon={statusInfo.icon}>
                  {statusInfo.label}
                </StatusBadge>
              )}
              <span className="text-sm text-white/80">
                {series.bookCount === 1
                  ? t("series.header.books", { count: series.bookCount })
                  : t("series.header.books_plural", { count: series.bookCount })}
              </span>
              {series.missingCount != null && series.missingCount > 0 && (
                <StatusBadge status="warning" icon={BookX}>
                  {t("series.header.missing", { count: series.missingCount })}
                </StatusBadge>
              )}
              <IconButton
                variant="ghost"
                size="icon"
                icon={isFavorite ? Star : StarOff}
                onClick={handleToggleFavorite}
                tooltip={t(
                  isFavorite ? "series.header.favorite.remove" : "series.header.favorite.add"
                )}
                className="text-white hover:text-white"
                iconClassName={isFavorite ? "fill-yellow-400 text-yellow-400" : ""}
              />
              <RefreshButton libraryId={series.id} refreshLibrary={refreshSeries} />
            </div>
          </div>
        </div>
      </div>

    </div>
  );
};