import { useEffect, useState } from "react";
import { t } from "@lingui/core/macro";
import { API_URL } from "../../config/api.ts";
import { useAuth } from "../../hooks/auth/useAuth.ts";
import type { PlaylistMembership } from "../../../shared/playlist.ts";
import type { Wire } from "../../../shared/api.ts";
import { deserializePlaylistMembership } from "../../utils/shared/deserialize.ts";
import { Modal } from "../shared/Modal.tsx";
import { PlaylistMembershipPanel } from "./PlaylistMembershipPanel.tsx";

interface AddToPlaylistModalProps {
  dumpId: string;
  onClose: () => void;
}

export function AddToPlaylistModal(
  { dumpId, onClose }: AddToPlaylistModalProps,
) {
  const { authFetch } = useAuth();
  const [memberships, setMemberships] = useState<PlaylistMembership[]>([]);
  const [loading, setLoading] = useState(true);

  useEffect(() => {
    authFetch(`${API_URL}/api/playlists/by-dump/${dumpId}/memberships`)
      .then((r) => r.json())
      .then((body) => {
        if (body.success) {
          setMemberships(
            (body.data as Wire<PlaylistMembership>[]).map(
              deserializePlaylistMembership,
            ),
          );
        }
      })
      .catch(() => {})
      .finally(() => setLoading(false));
  }, [dumpId, authFetch]);

  const toggleMembership = async (membership: PlaylistMembership) => {
    const { playlist, hasDump } = membership;
    // The box only changes once the server agrees; a refusal or a dropped
    // connection leaves it showing the truth.
    try {
      const res = await authFetch(
        `${API_URL}/api/playlists/${playlist.id}/dumps/${dumpId}`,
        { method: hasDump ? "DELETE" : "POST" },
      );
      if (!res.ok) return;
    } catch {
      return;
    }
    setMemberships((prev) =>
      prev.map((m) =>
        m.playlist.id === playlist.id ? { ...m, hasDump: !hasDump } : m
      )
    );
  };

  return (
    <Modal title={t`Add to playlist`} onClose={onClose}>
      <PlaylistMembershipPanel
        dumpId={dumpId}
        memberships={memberships}
        loading={loading}
        onToggle={toggleMembership}
        onPlaylistCreated={(membership) =>
          setMemberships((prev) => [membership, ...prev])}
      />
    </Modal>
  );
}