TREK/shared/src/reservation/reservation.schema.ts

import { z } from 'zod';

/**
 * Reservation + accommodation API contract — single source of truth for the
 * /api/trips/:tripId/reservations and /api/trips/:tripId/accommodations endpoints.
 *
 * Trip-scoped. Reservations use the 'reservation_edit' permission; accommodations
 * use 'day_edit' (they live in the day/accommodation service). The legacy routes
 * (server/src/routes/reservations.ts + the accommodations sub-router in
 * routes/days.ts) carry several side effects — auto-creating/updating/deleting a
 * linked budget item, accommodation broadcasts and booking notifications — which
 * the Nest service reproduces 1:1. Reservation bodies are wide and provider-ish,
 * so the create/update payloads stay mostly open with `title` pinned.
 */

const open = z.record(z.string(), z.unknown());

/**
 * A reservation endpoint (flight/train leg terminal) — row of the
 * reservation_endpoints table (server/src/services/reservationService.ts).
 */
export const reservationEndpointSchema = z.object({
  id: z.number().optional(),
  reservation_id: z.number().optional(),
  role: z.enum(['from', 'to', 'stop']),
  sequence: z.number(),
  name: z.string(),
  code: z.string().nullable(),
  lat: z.number(),
  lng: z.number(),
  timezone: z.string().nullable(),
  local_time: z.string().nullable(),
  local_date: z.string().nullable(),
});
export type ReservationEndpoint = z.infer<typeof reservationEndpointSchema>;

/**
 * A traveler assigned to a reservation — a trip member or a named guest (both are
 * `users` rows; a guest carries is_guest=1). Mirrors the budget member read shape
 * without the cost-split fields; joined + avatar-resolved in reservationService.
 */
export const reservationTravelerSchema = z.object({
  user_id: z.number(),
  username: z.string(),
  avatar_url: z.string().nullable().optional(),
  avatar: z.string().nullable().optional(),
  is_guest: z.number().nullable().optional(),
});
export type ReservationTraveler = z.infer<typeof reservationTravelerSchema>;

/**
 * Endpoints as accepted on a WRITE (create/update body `endpoints` array). This
 * pins the STRUCTURE (role must be a known value, name/code are strings) so a
 * plugin can't crash the service with a stray type, but stays permissive on the
 * rest to match the service exactly: it silently drops rows whose lat/lng are
 * missing and defaults sequence from the array index. So lat/lng/sequence are
 * nullable+optional here — a coord-less endpoint validates and is then dropped
 * downstream, byte-for-byte the pre-existing REST/importer behaviour (no breaking
 * change), while `role: 'banana'` or a non-string name is still rejected up front.
 */
export const reservationEndpointsInputSchema = z.array(
  z.object({
    role: z.enum(['from', 'to', 'stop']),
    name: z.string().min(1),
    lat: z.number().nullable().optional(),
    lng: z.number().nullable().optional(),
    sequence: z.number().nullable().optional(),
    code: z.string().nullable().optional(),
    timezone: z.string().nullable().optional(),
    local_time: z.string().nullable().optional(),
    local_date: z.string().nullable().optional(),
  }),
);
export type ReservationEndpointsInput = z.infer<typeof reservationEndpointsInputSchema>;

/**
 * ONE SEGMENT of a multi-leg transport booking, as stored in
 * `reservations.metadata.legs` (#1914).
 *
 * The model: the ordered `reservation_endpoints` rows are the geometry (which
 * airports/stations, in which order), while the per-segment detail (each leg's
 * own day + local time and its airline/train identity) lives in the legs. That
 * split is why a stopover needs legs at all: its endpoint carries only the
 * ONWARD departure time, so the arrival at the stop exists nowhere else.
 *
 * The shape mirrors 1:1 what the planner form (client TransportModal) and the
 * importers (AirTrail, KItinerary) already write, including the `null`-for-unset
 * convention on the day/time fields. One schema covers both kinds of booking:
 * flights fill airline/flight_number, trains train_number/platform.
 *
 * `day_positions` is deliberately NOT part of the input: the day planner owns it
 * per leg, so a writer preserves it rather than sets it.
 */
export const transportLegInputSchema = z.object({
  /** Flights: IATA code of the departure airport. Trains: departure station label. */
  from: z.string().min(1).nullable().optional(),
  /** Flights: IATA code of the arrival airport. Trains: arrival station label. */
  to: z.string().min(1).nullable().optional(),
  airline: z.string().max(100).nullable().optional(),
  flight_number: z.string().max(20).nullable().optional(),
  train_number: z.string().max(20).nullable().optional(),
  platform: z.string().max(20).nullable().optional(),
  seat: z.string().max(20).nullable().optional(),
  /**
   * This segment's OWN booking reference (#1943). Airlines and railways often
   * issue one per flight instead of one per booking, so the reservation-level
   * `confirmation_number` cannot cover the chain. Unset means the booking's own
   * reference is the one that counts for this segment; the column stays the
   * reference for the booking as a whole and is never derived from a leg.
   */
  confirmation_number: z.string().max(100).nullable().optional(),
  dep_day_id: z.number().int().positive().nullable().optional(),
  /** Local departure time of this segment, 'HH:mm'. */
  dep_time: z.string().max(10).nullable().optional(),
  arr_day_id: z.number().int().positive().nullable().optional(),
  /** Local arrival time of this segment, 'HH:mm'. */
  arr_time: z.string().max(10).nullable().optional(),
});
export type TransportLegInput = z.infer<typeof transportLegInputSchema>;

/**
 * The legs of one booking. A leg list only makes sense with at least one
 * stopover: a direct booking keeps the flat metadata it always had, and every
 * reader (client flightLegs/dayMerge, calendar ICS, the AirTrail dedupe) treats
 * `legs.length > 1` as the multi-segment marker.
 */
export const transportLegsInputSchema = z.array(transportLegInputSchema);
export type TransportLegsInput = z.infer<typeof transportLegsInputSchema>;

/**
 * Reservation entity as returned by the reservation list endpoint
 * (server/src/services/reservationService.ts -> listReservations). Columns of
 * the `reservations` table plus the joined day_number / place_name / linked
 * accommodation fields and the computed `day_positions` + `endpoints`.
 * `accommodation_id` is stored as TEXT in the DB.
 */
export const reservationSchema = z.object({
  id: z.number(),
  trip_id: z.number(),
  day_id: z.number().nullable().optional(),
  end_day_id: z.number().nullable().optional(),
  place_id: z.number().nullable().optional(),
  assignment_id: z.number().nullable().optional(),
  title: z.string(),
  reservation_time: z.string().nullable().optional(),
  reservation_end_time: z.string().nullable().optional(),
  location: z.string().nullable().optional(),
  confirmation_number: z.string().nullable().optional(),
  notes: z.string().nullable().optional(),
  url: z.string().nullable().optional(),
  status: z.string(),
  type: z.string(),
  accommodation_id: z.union([z.number(), z.string()]).nullable().optional(),
  metadata: z.string().nullable().optional(),
  needs_review: z.number().optional(),
  day_plan_position: z.number().nullable().optional(),
  created_at: z.string().optional(),
  // AirTrail (or future provider) linkage — drives the "synced" badge (#214).
  external_source: z.string().nullable().optional(),
  external_id: z.string().nullable().optional(),
  external_owner_user_id: z.number().nullable().optional(),
  external_synced_at: z.string().nullable().optional(),
  sync_enabled: z.number().nullable().optional(),
  // joined / computed in listReservations
  day_number: z.number().nullable().optional(),
  place_name: z.string().nullable().optional(),
  accommodation_place_id: z.number().nullable().optional(),
  accommodation_name: z.string().nullable().optional(),
  accommodation_start_day_id: z.number().nullable().optional(),
  accommodation_end_day_id: z.number().nullable().optional(),
  day_positions: z.record(z.string(), z.number()).nullable().optional(),
  endpoints: z.array(reservationEndpointSchema).optional(),
  // Trip members / named guests this booking is for (#1517). Joined in listReservations.
  travelers: z.array(reservationTravelerSchema).optional(),
});
export type Reservation = z.infer<typeof reservationSchema>;

/**
 * Accommodation entity as returned by listAccommodations / getAccommodationWithPlace
 * (server/src/services/dayService.ts). Columns of the day_accommodations table
 * plus the joined place fields and (on list) the linked reservation_title.
 */
export const accommodationSchema = z.object({
  id: z.number(),
  trip_id: z.number(),
  place_id: z.number().nullable().optional(),
  start_day_id: z.number(),
  end_day_id: z.number(),
  check_in: z.string().nullable().optional(),
  check_in_end: z.string().nullable().optional(),
  check_out: z.string().nullable().optional(),
  confirmation: z.string().nullable().optional(),
  notes: z.string().nullable().optional(),
  created_at: z.string().optional(),
  // joined in listAccommodations / getAccommodationWithPlace
  place_name: z.string().nullable().optional(),
  place_address: z.string().nullable().optional(),
  place_image: z.string().nullable().optional(),
  place_lat: z.number().nullable().optional(),
  place_lng: z.number().nullable().optional(),
  reservation_title: z.string().nullable().optional(),
});
export type Accommodation = z.infer<typeof accommodationSchema>;

/** Reservation create: title is required; the many optional fields stay open. */
export const reservationCreateRequestSchema = open.and(z.object({ title: z.string().min(1) }));
export type ReservationCreateRequest = z.infer<typeof reservationCreateRequestSchema>;

export const reservationUpdateRequestSchema = open;
export type ReservationUpdateRequest = z.infer<typeof reservationUpdateRequestSchema>;

/** Assign trip members/guests to a reservation (mirrors budget's PUT :id/members). */
export const reservationTravelersRequestSchema = z.object({
  user_ids: z.array(z.number()),
});
export type ReservationTravelersRequest = z.infer<typeof reservationTravelersRequestSchema>;

export const reservationPositionsRequestSchema = z.object({
  // day_plan_position is optional on the wire: the legacy route never
  // validated position items, and an absent value binds NULL (clears the
  // stored position) — pinned by the server integration suite (RESV-006).
  positions: z.array(z.object({ id: z.number(), day_plan_position: z.number().optional() })),
  day_id: z.union([z.number(), z.string()]).nullable().optional(),
});
export type ReservationPositionsRequest = z.infer<typeof reservationPositionsRequestSchema>;

export const accommodationCreateRequestSchema = z.object({
  place_id: z.union([z.number(), z.string()]),
  start_day_id: z.union([z.number(), z.string()]),
  end_day_id: z.union([z.number(), z.string()]),
  check_in: z.string().nullable().optional(),
  check_in_end: z.string().nullable().optional(),
  check_out: z.string().nullable().optional(),
  confirmation: z.string().nullable().optional(),
  notes: z.string().nullable().optional(),
});
export type AccommodationCreateRequest = z.infer<typeof accommodationCreateRequestSchema>;

/**
 * REST body variant of the create contract: the three refs are required by the
 * endpoint but optional on the wire — their absence answers with the bespoke
 * controller 400 ('place_id, start_day_id, and end_day_id are required'),
 * which the validation pipe must not pre-empt. The plugin RPC host keeps the
 * strict schema above (missing refs are BAD_PARAMS there).
 */
export const accommodationCreateBodySchema = accommodationCreateRequestSchema.partial({
  place_id: true,
  start_day_id: true,
  end_day_id: true,
});
export type AccommodationCreateBody = z.infer<typeof accommodationCreateBodySchema>;

export const accommodationUpdateRequestSchema = open;
export type AccommodationUpdateRequest = z.infer<typeof accommodationUpdateRequestSchema>;

// ---------------------------------------------------------------------------
// Booking import (KItinerary)
// ---------------------------------------------------------------------------

const bookingImportEndpointSchema = z.object({
  role: z.enum(['from', 'to', 'stop']),
  sequence: z.number(),
  name: z.string(),
  code: z.string().nullable(),
  // Nullable: the mapper emits named endpoints without coords; confirm() geocodes
  // them, and only the coord'd ones are persisted.
  lat: z.number().nullable(),
  lng: z.number().nullable(),
  timezone: z.string().nullable(),
  local_time: z.string().nullable(),
  local_date: z.string().nullable(),
});

const bookingImportVenueSchema = z.object({
  name: z.string(),
  lat: z.number().optional(),
  lng: z.number().optional(),
  address: z.string().optional(),
  website: z.string().optional(),
  phone: z.string().optional(),
});

const bookingImportAccommodationSchema = z.object({
  check_in: z.string().optional(),
  check_out: z.string().optional(),
  confirmation: z.string().optional(),
});

export const bookingImportPreviewItemSchema = z.object({
  type: z.string(),
  title: z.string().min(1),
  reservation_time: z.string().nullable().optional(),
  reservation_end_time: z.string().nullable().optional(),
  confirmation_number: z.string().nullable().optional(),
  location: z.string().nullable().optional(),
  metadata: z.record(z.string(), z.unknown()).optional(),
  endpoints: z.array(bookingImportEndpointSchema).optional(),
  needs_review: z.boolean().optional(),
  _venue: bookingImportVenueSchema.optional(),
  _accommodation: bookingImportAccommodationSchema.optional(),
  source: z.object({ fileName: z.string(), index: z.number() }),
});
export type BookingImportPreviewItem = z.infer<typeof bookingImportPreviewItemSchema>;

/**
 * How the preview endpoint should treat the LLM fallback:
 *  - `no-ai`             — kitinerary only (default; existing behaviour)
 *  - `fallback-on-empty` — run the LLM for files kitinerary returns nothing for
 *  - `force-ai`          — run the LLM on every submitted file (skip kitinerary)
 */
export const bookingImportModeSchema = z.enum(['no-ai', 'fallback-on-empty', 'force-ai']);
export type BookingImportMode = z.infer<typeof bookingImportModeSchema>;

/** Per-file AI report so the preview UI can offer "Try AI parsing" only where it applies. */
export const bookingImportFileReportSchema = z.object({
  fileName: z.string(),
  aiAvailable: z.boolean(),
  aiUsed: z.boolean(),
});
export type BookingImportFileReport = z.infer<typeof bookingImportFileReportSchema>;

export const bookingImportPreviewResponseSchema = z.object({
  items: z.array(bookingImportPreviewItemSchema),
  warnings: z.array(z.string()),
  // Optional so existing/no-AI responses stay byte-compatible.
  files: z.array(bookingImportFileReportSchema).optional(),
});
export type BookingImportPreviewResponse = z.infer<typeof bookingImportPreviewResponseSchema>;

export const bookingImportConfirmRequestSchema = z.object({
  items: z.array(bookingImportPreviewItemSchema).min(1),
});
export type BookingImportConfirmRequest = z.infer<typeof bookingImportConfirmRequestSchema>;

export const bookingImportConfirmResponseSchema = z.object({
  created: z.array(reservationSchema),
});
export type BookingImportConfirmResponse = z.infer<typeof bookingImportConfirmResponseSchema>;