import type { CollectionBeforeChangeHook, CollectionConfig } from "payload";
import { isAdmin, publishedOrAdmin } from "@/access";
import { slugField } from "@/fields/slug";
import { seoFields } from "@/fields/seo";
import { generateMeetingPassword } from "@/lib/meeting/password";

export const EVENT_CATEGORIES = [
  { label: "Prozessbegleitung", value: "prozessbegleitung" },
  { label: "Doula", value: "doula" },
  { label: "Erdenkinder", value: "erdenkinder" },
  { label: "Mädchenkreis", value: "maedchenkreis" },
  { label: "Singen im Kreis", value: "singen-im-kreis" },
  { label: "Singen für Schwangere", value: "singen-fuer-schwangere" },
  { label: "Singen für Mamas mit Baby", value: "singen-fuer-mamas-mit-baby" },
  { label: "Sonstiges", value: "sonstiges" },
] as const;

// Auto-generates the meeting password for new online events, and
// regenerates it whenever the admin ticks "Neues Passwort generieren".
// Never derived from the event id/slug — always a fresh random value.
const setMeetingPassword: CollectionBeforeChangeHook = ({ data }) => {
  if (!data?.isOnline) return data;
  if (!data.meetingPassword || data.regeneratePassword) {
    data.meetingPassword = generateMeetingPassword();
  }
  data.regeneratePassword = false;
  return data;
};

export const Events: CollectionConfig = {
  slug: "events",
  labels: {
    singular: "Termin",
    plural: "Termine",
  },
  admin: {
    useAsTitle: "title",
    defaultColumns: ["title", "date", "category", "_status"],
    group: "Inhalte",
    description: "Termine und Veranstaltungen — erscheinen automatisch unter /termine.",
  },
  versions: {
    drafts: {
      autosave: { interval: 1500 },
    },
  },
  access: {
    read: publishedOrAdmin,
    create: isAdmin,
    update: isAdmin,
    delete: isAdmin,
  },
  hooks: {
    beforeChange: [setMeetingPassword],
  },
  fields: [
    {
      name: "title",
      type: "text",
      label: "Titel",
      required: true,
    },
    slugField(),
    {
      name: "description",
      type: "richText",
      label: "Beschreibung",
    },
    {
      type: "row",
      fields: [
        {
          name: "date",
          type: "date",
          label: "Datum",
          required: true,
          admin: {
            date: { pickerAppearance: "dayOnly", displayFormat: "dd.MM.yyyy" },
            width: "34%",
          },
        },
        {
          name: "startTime",
          type: "date",
          label: "Startzeit",
          admin: {
            date: { pickerAppearance: "timeOnly", displayFormat: "HH:mm" },
            width: "33%",
          },
        },
        {
          name: "endTime",
          type: "date",
          label: "Endzeit",
          admin: {
            date: { pickerAppearance: "timeOnly", displayFormat: "HH:mm" },
            width: "33%",
          },
        },
      ],
    },
    {
      name: "location",
      type: "text",
      label: "Ort",
    },
    {
      name: "category",
      type: "select",
      label: "Kategorie",
      required: true,
      defaultValue: "sonstiges",
      options: [...EVENT_CATEGORIES],
    },
    {
      name: "image",
      type: "upload",
      relationTo: "media",
      label: "Bild",
    },
    {
      type: "row",
      fields: [
        {
          name: "maxParticipants",
          type: "number",
          label: "Maximale Teilnehmerzahl",
          min: 1,
          admin: { width: "50%" },
        },
        {
          name: "registrationRequired",
          type: "checkbox",
          label: "Anmeldung erforderlich",
          defaultValue: false,
          admin: { width: "50%" },
        },
      ],
    },
    {
      name: "registrationInfo",
      type: "text",
      label: "Anmeldelink bzw. Kontaktmöglichkeit",
      admin: {
        description: "z. B. eine E-Mail-Adresse, ein Link oder ein Hinweistext.",
      },
    },
    {
      type: "collapsible",
      label: "Online-Termin (Video-Call)",
      fields: [
        {
          name: "isOnline",
          type: "checkbox",
          label: "Online-Termin",
          defaultValue: false,
          admin: {
            description: "Aktiviert Meeting-Passwort, Beitrittsseite und Erinnerungs-E-Mails.",
          },
        },
        {
          name: "meetingPassword",
          type: "text",
          label: "Meeting-Passwort",
          admin: {
            readOnly: true,
            condition: (data) => Boolean(data?.isOnline),
            description: "Wird automatisch erzeugt. Ist nicht Teil des Meeting-Links.",
          },
        },
        {
          name: "regeneratePassword",
          type: "checkbox",
          label: "Neues Passwort generieren (beim Speichern)",
          defaultValue: false,
          admin: {
            condition: (data) => Boolean(data?.isOnline),
          },
        },
        {
          type: "row",
          admin: { condition: (data) => Boolean(data?.isOnline) },
          fields: [
            {
              name: "reminder60Enabled",
              type: "checkbox",
              label: "Erinnerung 60 Minuten vorher",
              defaultValue: true,
              admin: { width: "34%" },
            },
            {
              name: "reminder30Enabled",
              type: "checkbox",
              label: "Erinnerung 30 Minuten vorher",
              defaultValue: true,
              admin: { width: "33%" },
            },
            {
              name: "hostReminderEnabled",
              type: "checkbox",
              label: "Auch Host per E-Mail erinnern",
              defaultValue: true,
              admin: { width: "33%" },
            },
          ],
        },
        {
          type: "row",
          admin: { condition: (data) => Boolean(data?.isOnline) },
          fields: [
            {
              name: "hostReminder60Sent",
              type: "checkbox",
              label: "Host-Reminder 60 Min. gesendet",
              defaultValue: false,
              admin: { readOnly: true, width: "50%" },
            },
            {
              name: "hostReminder30Sent",
              type: "checkbox",
              label: "Host-Reminder 30 Min. gesendet",
              defaultValue: false,
              admin: { readOnly: true, width: "50%" },
            },
          ],
        },
      ],
    },
    {
      name: "isPrivateBooking",
      type: "checkbox",
      label: "Aus privater Buchungsanfrage erzeugt",
      defaultValue: false,
      admin: {
        position: "sidebar",
        readOnly: true,
        description: "Wird automatisch gesetzt, wenn dieser Termin aus einer bestätigten Einzelbuchung entstanden ist. Solche Termine bleiben unveröffentlicht.",
      },
    },
    {
      name: "bookingRequest",
      type: "relationship",
      relationTo: "booking-requests",
      label: "Zugehörige Buchungsanfrage",
      admin: { position: "sidebar", readOnly: true },
    },
    seoFields(),
  ],
};