import type { FleetResourceConfig } from "./resources";

/**
 * A plate is two or three letters, a hyphen, then two to six digits — ET-9875,
 * AA-8642. Mirrors VEHICLE_PLATE_REGEX on the API so the form and the server
 * agree on what a plate looks like.
 */
const PLATE_PATTERN = {
  regex: /^[A-Z]{2,3}-\d{2,6}$/,
  message: "Use letters and numbers like ET-9875 or AA-8642",
};

/**
 * Legacy static list. Truck configurations now live in `freight.truck_types`
 * and are edited in the back office (Rule Engine → Truck Types), so the form
 * loads them through `dynamicOptions: "truckTypes"` instead.
 *
 * Kept only for the driver "authorized vehicle types" multiselect, which stores
 * free-text categories rather than truck-type ids.
 *
 * @deprecated prefer the managed truck types
 */
const VEHICLE_TYPE_OPTIONS = [
  { label: "Truck", value: "TRUCK" },
  { label: "Van", value: "VAN" },
  { label: "Car", value: "CAR" },
  { label: "Bus", value: "BUS" },
  { label: "Trailer", value: "TRAILER" },
  { label: "Tanker", value: "TANKER" },
  { label: "Flatbed", value: "FLATBED" },
];

const OWNERSHIP_OPTIONS = [
  { label: "Owned", value: "OWNED" },
  { label: "Outsourced", value: "OUTSOURCED" },
];

const FUEL_TYPE_OPTIONS = [
  { label: "Petrol", value: "PETROL" },
  { label: "Diesel", value: "DIESEL" },
  { label: "Electric", value: "ELECTRIC" },
  { label: "Hybrid", value: "HYBRID" },
];

const VEHICLE_STATUS_OPTIONS = [
  { label: "Active", value: "ACTIVE" },
  { label: "Maintenance", value: "MAINTENANCE" },
  { label: "Retired", value: "RETIRED" },
  { label: "Out of service", value: "OUT_OF_SERVICE" },
];

const VEHICLE_AVAILABILITY_OPTIONS = [
  { label: "Free", value: "FREE" },
  { label: "Busy", value: "BUSY" },
];

export const vehiclesConfig: FleetResourceConfig = {
  slug: "vehicles",
  label: "Vehicles",
  subtitle: "Manage vehicle master data for fleet operations",
  basePath: "/dashboard/vehicles",
  detailPath: "/dashboard/vehicles/:id",
  addLabel: "Add Vehicle",
  entityLabel: "Vehicle",
  searchPlaceholder: "Search vehicles…",
  supportsSearch: true,
  removeAction: "delete",
  cardTitleKey: "plateNumber",
  cardCodeKey: "plateNumber",
  cardSubtitleKey: "status",
  listFilters: [
    {
      key: "status",
      label: "Status",
      allLabel: "All statuses",
      options: VEHICLE_STATUS_OPTIONS,
    },
    {
      key: "availability",
      label: "Availability",
      allLabel: "All availability",
      options: VEHICLE_AVAILABILITY_OPTIONS,
    },
  ],
  searchKeys: ["plateNumber", "registrationNumber", "manufacturer", "model", "vehicleType", "vin", "status"],
  columns: [
    { id: "code", header: "Code", accessorKey: "code", size: 90 },
    { id: "plateNumber", header: "Plate Number", accessorKey: "plateNumber", size: 120 },
    { id: "trailerPlateNo", header: "Trailer Plate No", accessorKey: "trailerPlateNo", size: 130 },
    { id: "manufacturer", header: "Manufacturer", accessorKey: "manufacturer", size: 120 },
    { id: "model", header: "Model", accessorKey: "model", size: 100 },
    { id: "truckTypeId", header: "Truck Type", accessorKey: "truckTypeId", format: "entityLabel", size: 130 },
    { id: "capacity", header: "Capacity (tons)", accessorKey: "capacity", format: "number", size: 100 },
    { id: "ownership", header: "Ownership", accessorKey: "ownership", size: 100 },
    { id: "status", header: "Status", accessorKey: "status", format: "statusBadge", size: 100 },
    { id: "availability", header: "Availability", accessorKey: "availability", format: "statusBadge", size: 100 },
  ],
  // Registration captures what the vehicle IS. Location, distances and haulage
  // pricing are per-trip operational data and live on the vehicle's Operations
  // tab instead (VehicleDetailPage) — they are not part of registering a truck.
  formFields: [
    { name: "code", label: "Code", type: "text" },
    { name: "plateNumber", label: "Power Plate No", type: "text", required: true, pattern: PLATE_PATTERN },
    // The truck type decides whether a trailer exists at all: a rigid truck
    // (Casoni) has none, so the field disappears and submits null. Mirrored
    // server-side in VehiclesService — hiding a field is not enforcement.
    {
      name: "trailerPlateNo",
      label: "Trailer Plate No",
      type: "text",
      pattern: PLATE_PATTERN,
      showIf: (values) => values._hasTrailer !== false,
    },
    {
      name: "truckTypeId",
      label: "Truck Type",
      type: "select",
      required: true,
      dynamicOptions: "truckTypes",
      description: "Managed in Rule Engine → Truck Types",
      // Capacity is a property of the type, not of each individual truck.
      // `_hasTrailer` is form-local scratch (stripped before submit) that drives
      // the trailer plate's visibility.
      onOptionSelected: (option) => ({
        _hasTrailer: option?.meta?.hasTrailer ?? true,
        ...(option?.meta?.capacityTons != null
          ? { capacity: option.meta.capacityTons }
          : {}),
      }),
    },
    { name: "vin", label: "VIN", type: "text", description: "Vehicle Identification Number" },
    { name: "ownership", label: "Ownership", type: "radio", options: OWNERSHIP_OPTIONS },
    { name: "manufacturer", label: "Manufacturer", type: "text", required: true },
    { name: "model", label: "Model", type: "text", required: true },
    { name: "year", label: "Year", type: "number", required: true },
    { name: "fuelType", label: "Fuel Type", type: "select", required: true, options: FUEL_TYPE_OPTIONS },
    {
      name: "capacity",
      label: "Capacity (tons)",
      type: "number",
      required: true,
      description: "Pre-filled from the truck type — override only for a one-off",
    },
    { name: "pricePerKm", label: "Price per KM (ETB)", type: "number", description: "Haulage rate charged per kilometre" },
    { name: "status", label: "Status", type: "select", required: true, options: VEHICLE_STATUS_OPTIONS },
    { name: "availability", label: "Availability", type: "select", required: true, options: VEHICLE_AVAILABILITY_OPTIONS },
    { name: "description", label: "Description", type: "textarea" },
  ],
  emptyValues: {
    code: "03-ET",
    plateNumber: "",
    trailerPlateNo: "",
    truckTypeId: "",
    vin: "",
    ownership: "OWNED",
    manufacturer: "",
    model: "",
    year: new Date().getFullYear(),
    fuelType: "DIESEL",
    capacity: 0,
    pricePerKm: 0,
    status: "ACTIVE",
    availability: "FREE",
    description: "",
  },
};

export { VEHICLE_TYPE_OPTIONS, FUEL_TYPE_OPTIONS, VEHICLE_STATUS_OPTIONS, VEHICLE_AVAILABILITY_OPTIONS };