import { CollectionConfig } from "payload";
import { requirePermission, hasPermission } from "@/utils/access-control/hasPermission";

export const LockerStorages: CollectionConfig = {
  slug: "locker-storages",
  admin: {
    group: "Locker",
    useAsTitle: "name",
    defaultColumns: ["name", "ownerUser", "itemCount"],
  },
  access: {
    read: async ({ req }) => {
      if (!req.user) return false;
      if (await hasPermission(req.payload, req.user, "locker-storages:read")) return true;
      return { ownerUser: { equals: req.user.id } };
    },
    create: ({ req }) => {
      if (!req.user) return false;
      return hasPermission(req.payload, req.user, "locker-storages:create");
    },
    update: async ({ req }) => {
      if (!req.user) return false;
      if (await hasPermission(req.payload, req.user, "locker-storages:update")) return true;
      return { ownerUser: { equals: req.user.id } };
    },
    delete: async ({ req }) => {
      return await hasPermission(req.payload, req.user, "locker-storages:delete");
    },
  },
  fields: [
    {
      name: "name",
      type: "text",
      required: true,
      defaultValue: "Personal Locker",
      admin: {
        description: "Display name for this locker.",
      },
    },
    {
      name: "ownerUser",
      type: "relationship",
      relationTo: "users",
      required: true,
      admin: {
        description: "The operator who owns this locker.",
      },
    },
    {
      name: "items",
      type: "array",
      admin: {
        description:
          "Items stored in the locker grid. Position and rotation are managed from the member locker UI.",
      },
      fields: [
        {
          name: "asset",
          type: "relationship",
          relationTo: "assets",
          required: true,
        },
        {
          name: "quantity",
          type: "number",
          required: true,
          min: 1,
          defaultValue: 1,
        },
        {
          name: "gridX",
          type: "number",
          required: true,
          min: 0,
          defaultValue: 0,
          admin: {
            description: "Column position in the locker grid (0-indexed).",
          },
        },
        {
          name: "gridY",
          type: "number",
          required: true,
          min: 0,
          defaultValue: 0,
          admin: {
            description: "Row position in the locker grid (0-indexed).",
          },
        },
        {
          name: "rotated",
          type: "checkbox",
          defaultValue: false,
          admin: {
            description: "Whether this item is rotated 90 degrees (swaps width and height).",
          },
        },
        {
          name: "equipment",
          type: "group",
          label: "Equipment Customization",
          admin: {
            description:
              "Per-instance customization for this item: installed attachments, applied skin, and a custom name. Managed from the member locker UI.",
          },
          fields: [
            {
              name: "attachments",
              type: "array",
              label: "Installed Attachments",
              admin: {
                description:
                  "Attachments installed on this item (e.g. optics, muzzles, bipods on a weapon). Installing consumes the attachment from the locker grid.",
              },
              fields: [
                {
                  name: "asset",
                  type: "relationship",
                  relationTo: "assets",
                  required: true,
                },
              ],
            },
            {
              name: "skin",
              type: "relationship",
              relationTo: "assets",
              admin: {
                description:
                  "Skin applied to this item. Applying consumes the skin from the locker grid.",
              },
              filterOptions: {
                assetType: {
                  equals: "skin",
                },
              },
            },
            {
              name: "customName",
              type: "text",
              admin: {
                description: 'Optional custom name for this item (e.g. "Frank\'s Karma").',
              },
            },
          ],
        },
      ],
    },
    {
      name: "itemCount",
      type: "number",
      admin: {
        readOnly: true,
        description: "Total number of distinct entries currently in this locker.",
      },
      hooks: {
        beforeChange: [
          ({ data }) => {
            const items = (data as { items?: unknown[] } | undefined)?.items;
            return Array.isArray(items) ? items.length : 0;
          },
        ],
      },
    },
  ],
};