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

export const MarketNegotiations: CollectionConfig = {
  slug: "market-negotiations",
  admin: {
    group: "Market",
    useAsTitle: "id",
    defaultColumns: [
      "id",
      "listing",
      "buyer",
      "amount",
      "patience",
      "proposedBy",
      "status",
      "updatedAt",
    ],
    pagination: { defaultLimit: 50 },
  },
  access: {
    read: async ({ req }) => {
      const user = req.user as User | null;
      if (!user) return false;
      if (await hasPermission(req.payload, user, "market-negotiations:read")) return true;
      return {
        or: [{ buyer: { equals: user.id } }, { "listing.seller": { equals: user.id } }],
      } as Where;
    },
    create: ({ req }) => !!req.user,
    update: async ({ req }) => {
      const user = req.user as User | null;
      if (!user) return false;
      if (await hasPermission(req.payload, user, "market-negotiations:update")) return true;
      return {
        or: [{ buyer: { equals: user.id } }, { "listing.seller": { equals: user.id } }],
      } as Where;
    },
    delete: requirePermission("market-negotiations:delete"),
  },
  fields: [
    {
      name: "listing",
      type: "relationship",
      relationTo: "market-listings",
      required: true,
      index: true,
      admin: {
        description: "The market listing this negotiation thread belongs to.",
      },
    },
    {
      name: "buyer",
      type: "relationship",
      relationTo: "users",
      required: true,
      index: true,
      admin: {
        description: "The player interested in buying the listing.",
      },
    },
    {
      name: "status",
      type: "select",
      required: true,
      defaultValue: "open",
      options: [
        { label: "Open", value: "open" },
        { label: "Accepted", value: "accepted" },
        { label: "Rejected", value: "rejected" },
        { label: "Closed (patience exhausted)", value: "closed" },
        { label: "Cancelled", value: "cancelled" },
        { label: "Expired", value: "expired" },
      ],
      index: true,
    },
    {
      name: "patience",
      type: "number",
      defaultValue: 0,
      min: 0,
      max: 100,
      admin: {
        description:
          "NPC vendor patience (0–100). Rises each bargaining round and sharply for lowball offers; at 100 the negotiation closes and the buyer can only buy at the asking price.",
      },
    },
    {
      name: "quantity",
      type: "number",
      min: 1,
      defaultValue: 1,
      admin: {
        description: "How many units the buyer wants from the listing.",
      },
    },
    {
      name: "amount",
      type: "number",
      required: true,
      min: 0,
      admin: {
        description:
          "The per-unit price currently on the table. Proposed by the buyer or the seller depending on the proposal.",
      },
    },
    {
      name: "proposedBy",
      type: "select",
      required: true,
      defaultValue: "buyer",
      options: [
        { label: "Buyer", value: "buyer" },
        { label: "Seller", value: "seller" },
      ],
    },
    {
      name: "acceptedPrice",
      type: "number",
      admin: {
        description: "The per-unit price agreed when the negotiation is accepted.",
      },
    },
    {
      name: "history",
      type: "array",
      fields: [
        {
          name: "amount",
          type: "number",
          required: true,
        },
        {
          name: "from",
          type: "select",
          required: true,
          options: [
            { label: "Buyer", value: "buyer" },
            { label: "Seller", value: "seller" },
          ],
        },
        {
          name: "note",
          type: "text",
        },
        {
          name: "at",
          type: "date",
          required: true,
          defaultValue: () => new Date().toISOString(),
        },
      ],
    },
  ],
  timestamps: true,
};