import { CollectionConfig } from "payload";
import { requirePermission } from "@/utils/access-control/hasPermission";
import { validateHexColor } from "@/lib/map/style";
import { validatePolygon } from "@/lib/map/points";

/**
 * GM-drawn terrain zones. Land blueprints cannot be placed inside water
 * polygons; water blueprints require one. Default terrain (no zones on the
 * map) accepts everything.
 */
export const MapZones: CollectionConfig = {
  slug: "map-zones",
  admin: {
    group: "World",
    useAsTitle: "name",
  },
  access: {
    read: ({ req }) => !!req.user,
    create: requirePermission("maps:create"),
    update: requirePermission("maps:update"),
    delete: requirePermission("maps:delete"),
  },
  fields: [
    {
      name: "name",
      type: "text",
      admin: {
        description: 'Zone label (e.g. "Altis bay", "Flood plain").',
      },
    },
    {
      name: "description",
      type: "textarea",
      admin: {
        description: "Shown in the zone's tooltip and popup on the map.",
      },
    },
    {
      name: "map",
      type: "relationship",
      relationTo: "maps",
      required: true,
    },
    {
      name: "type",
      type: "select",
      required: true,
      options: [
        { label: "Water", value: "water" },
        { label: "Land", value: "land" },
        { label: "Territory", value: "territory" },
        { label: "Country Border", value: "border" },
      ],
      admin: {
        description:
          "Water zones block land-blueprint placement. Land zones are informational; default terrain is buildable land. Territory and Country Border are political boundaries (informational).",
      },
    },
    {
      name: "fillColor",
      type: "text",
      validate: validateHexColor,
      admin: {
        description: "Polygon fill as hex (e.g. #38bdf8). Empty = default color for the type.",
      },
    },
    {
      name: "strokeColor",
      type: "text",
      validate: validateHexColor,
      admin: {
        description: "Outline color as hex. Empty = default color for the type.",
      },
    },
    {
      name: "fillOpacity",
      type: "number",
      min: 0,
      max: 1,
      admin: {
        description:
          "Fill opacity 0-1. Empty = default (0.25 water, 0.08 land, 0.1 territory, 0.06 border).",
      },
    },
    {
      name: "strokeWeight",
      type: "number",
      min: 0,
      max: 10,
      defaultValue: 1,
      admin: {
        description: "Outline thickness in pixels. 0 hides the outline.",
      },
    },
    {
      name: "resources",
      type: "relationship",
      relationTo: "resources",
      hasMany: true,
      admin: {
        description:
          "Resources contained in this zone (e.g. an oil field). A zone with resources satisfies blueprint resourcesInRange requirements for any site inside it.",
      },
    },
    {
      name: "labelVisible",
      type: "checkbox",
      defaultValue: true,
      label: "Show Name Label",
      admin: {
        description: "Renders the zone's name at the polygon's center.",
      },
    },
    {
      name: "points",
      type: "json",
      required: true,
      validate: validatePolygon,
      admin: {
        description:
          "Polygon ring as an array of [x, y] meter tuples (need not repeat the first point).",
      },
    },
  ],
};