import type { CollectionConfig } from "payload";
import hasRoles from "@/utils/access-control/hasRoles";

function isStaff(user: Parameters<typeof hasRoles>[1]): boolean {
  return hasRoles(["admin", "developer"], user);
}

const STAFF_ROLES = ["admin", "developer"];

export const StoryBeatStates: CollectionConfig = {
  slug: "story-beat-states",
  admin: {
    group: "Story",
    useAsTitle: "beat",
    defaultColumns: ["user", "beat", "readAt", "reaction"],
    description: "Per-user read markers and reactions for story beats.",
    // The admin-panel `user` is a client-side user type, so check its roles
    // structurally rather than through hasRoles.
    hidden: ({ user }) =>
      user?.collection !== "users" ||
      !STAFF_ROLES.some((role) => (user.roles ?? []).includes(role)),
  },
  access: {
    // Users can read/update only their own state; staff see everything.
    read: ({ req }) => {
      if (!req.user) return false;
      if (isStaff(req.user)) return true;
      return { user: { equals: req.user.id } };
    },
    create: ({ req }) => !!req.user,
    update: ({ req }) => {
      if (!req.user) return false;
      if (isStaff(req.user)) return true;
      return { user: { equals: req.user.id } };
    },
    delete: ({ req }) => isStaff(req.user),
  },
  fields: [
    {
      name: "user",
      type: "relationship",
      relationTo: "users",
      required: true,
      index: true,
    },
    {
      name: "beat",
      type: "relationship",
      relationTo: "story-beats",
      required: true,
      index: true,
    },
    {
      name: "readAt",
      type: "date",
      admin: {
        description: "When the user first read the beat.",
      },
    },
    {
      name: "reaction",
      type: "select",
      options: [
        { label: "Like", value: "like" },
        { label: "Heart", value: "heart" },
        { label: "Salute", value: "salute" },
      ],
      admin: {
        description: "The user's current reaction to the beat, if any.",
      },
    },
  ],
};