import type { GroupRideSummary } from '../components/group-rides/types';

export interface GroupRidePayloadContext {
  rideId: string;
  uid: string;
  leadHandle: string;
  leadDisplayName: string;
  now: Date;
}

export type WebGroupRideInput = GroupRideSummary & {
  visibility?: string;
  clubId?: string;
  clubName?: string;
};

/**
 * Builds the Firestore `group_rides/{id}` document for a ride created from the web hub.
 *
 * The web create form captures a free-text rally point only (there is no map picker or
 * geocoder), so the meeting point stores `displayName`/`address` text and deliberately omits
 * `latitude`/`longitude`. We never fabricate coordinates: a missing coordinate means
 * "location not pinned yet", which `mapFirestoreRideToSummary` already handles (it derives
 * `meetingPointCoords` only when both lat and lon are present).
 *
 * Pure and dependency-free so it can be unit-tested without Firebase.
 */
export function buildWebGroupRidePayload(
  newRide: WebGroupRideInput,
  ctx: GroupRidePayloadContext
): Record<string, unknown> {
  const { rideId, uid, leadHandle, leadDisplayName, now } = ctx;

  let scheduledStartAt = new Date(now.getTime() + 3600000).toISOString();
  let departureAt = new Date(now.getTime() + 3600000 + 1800000).toISOString();

  if (newRide.scheduledDate) {
    const parsed = new Date(`${newRide.scheduledDate} ${newRide.scheduledTime}`);
    if (!isNaN(parsed.getTime()) && parsed.getTime() > now.getTime() - 86400000) {
      scheduledStartAt = parsed.toISOString();
      departureAt = new Date(parsed.getTime() + 30 * 60000).toISOString();
    }
  }

  const payload: Record<string, unknown> = {
    id: rideId,
    organizerUid: uid,
    organizerHandle: leadHandle,
    organizerDisplayName: leadDisplayName,
    title: newRide.title.trim(),
    description: newRide.description?.trim() || '',
    visibility: newRide.visibility || 'public',
    joinPolicy: newRide.joinPolicy || 'requestToJoin',
    status: 'scheduled',
    scheduledStartAt,
    departureAt,
    participantLimit: Number(newRide.participantLimit) || 12,
    participantCount: 1,
    accessUids: [uid],
    meetingPoint: {
      displayName: newRide.meetingPoint || newRide.region || 'Designated Rally Point',
      address: newRide.region || '',
      locationType: 'meetup',
      notes: '',
    },
    stops: [],
    createdAt: now.toISOString(),
    updatedAt: now.toISOString(),
    paceClassification: newRide.paceClassification || 'Brisk Pace',
    discipline: newRide.discipline || 'Sport / Canyon',
    formationProfile: newRide.formationProfile || 'Staggered Dual Column [B]',
    routeTitle: newRide.routeSnippet || '',
  };

  if (newRide.clubId) {
    payload.clubId = newRide.clubId;
    if (newRide.clubName) payload.clubName = newRide.clubName;
  }

  return payload;
}