/**
 * rVnb Automerge document schemas.
 *
 * Community RV & camper rentals — trust-based vehicle sharing.
 * Granularity: one Automerge document per space (vehicles + rentals + endorsements).
 * DocId format: {space}:vnb:vehicles
 */

import type { DocSchema } from '../../shared/local-first/document';

// ── Economy model ──

export type EconomyModel = 'gift' | 'suggested' | 'fixed' | 'sliding_scale' | 'exchange';

// ── Vehicle types ──

export type VehicleType =
	| 'motorhome'
	| 'camper_van'
	| 'travel_trailer'
	| 'truck_camper'
	| 'skoolie'
	| 'other';

// ── Fuel types ──

export type FuelType = 'gas' | 'diesel' | 'electric' | 'hybrid' | 'propane' | 'other';

// ── Mileage policy ──

export type MileagePolicy = 'unlimited' | 'per_mile' | 'included_miles';

// ── Rental request status ──

export type RentalStatus =
	| 'pending'
	| 'accepted'
	| 'declined'
	| 'cancelled'
	| 'completed'
	| 'endorsed';

// ── Endorsement visibility ──

export type EndorsementVisibility = 'public' | 'private' | 'community';

// ── Core types ──

export interface TripWindow {
	id: string;
	vehicleId: string;
	startDate: number;        // epoch ms (start of day)
	endDate: number;          // epoch ms (end of day)
	status: 'available' | 'blocked' | 'tentative';
	pickupLocationName: string | null;
	pickupLat: number | null;
	pickupLng: number | null;
	dropoffLocationName: string | null;
	dropoffLat: number | null;
	dropoffLng: number | null;
	notes: string | null;
	createdAt: number;
}

export interface Vehicle {
	id: string;
	ownerDid: string;         // DID of the vehicle owner
	ownerName: string;
	title: string;
	description: string;
	type: VehicleType;
	economy: EconomyModel;

	// Vehicle specs
	year: number | null;
	make: string | null;
	model: string | null;
	lengthFeet: number | null;
	sleeps: number;
	fuelType: FuelType | null;

	// Amenities (boolean flags)
	hasGenerator: boolean;
	hasSolar: boolean;
	hasAC: boolean;
	hasHeating: boolean;
	hasShower: boolean;
	hasToilet: boolean;
	hasKitchen: boolean;
	petFriendly: boolean;
	towRequired: boolean;

	// Mileage policy
	mileagePolicy: MileagePolicy;
	includedMiles: number | null;
	perMileRate: number | null;

	// Pricing (relevant for non-gift economies)
	suggestedAmount: number | null;    // suggested/fixed price per night
	currency: string | null;
	slidingMin: number | null;
	slidingMax: number | null;
	exchangeDescription: string | null;

	// Pickup / Dropoff
	pickupLocationName: string;
	pickupLocationLat: number | null;
	pickupLocationLng: number | null;
	dropoffSameAsPickup: boolean;
	dropoffLocationName: string | null;
	dropoffLocationLat: number | null;
	dropoffLocationLng: number | null;

	// Photos
	photos: string[];
	coverPhoto: string | null;

	// Trust & auto-accept
	trustThreshold: number | null;
	instantAccept: boolean;

	// Metadata
	isActive: boolean;
	createdAt: number;
	updatedAt: number;
}

export interface RentalMessage {
	id: string;
	senderDid: string;
	senderName: string;
	body: string;
	sentAt: number;
}

export interface RentalRequest {
	id: string;
	vehicleId: string;
	renterDid: string;
	renterName: string;
	ownerDid: string;

	// Dates
	pickupDate: number;       // epoch ms
	dropoffDate: number;      // epoch ms
	estimatedMiles: number | null;

	// Requested locations
	requestedPickupLocation: string | null;
	requestedPickupLat: number | null;
	requestedPickupLng: number | null;
	requestedDropoffLocation: string | null;
	requestedDropoffLat: number | null;
	requestedDropoffLng: number | null;

	// Status flow: pending -> accepted/declined -> completed -> endorsed
	status: RentalStatus;

	// Messages embedded in the CRDT
	messages: RentalMessage[];

	// Contribution (for non-gift economies)
	offeredAmount: number | null;
	offeredCurrency: string | null;
	offeredExchange: string | null;

	// Timestamps
	requestedAt: number;
	respondedAt: number | null;
	completedAt: number | null;
	cancelledAt: number | null;
}

export interface Endorsement {
	id: string;
	rentalId: string;
	vehicleId: string;

	// Who wrote it and about whom
	authorDid: string;
	authorName: string;
	subjectDid: string;
	subjectName: string;
	direction: 'renter_to_owner' | 'owner_to_renter';

	// Content
	body: string;
	rating: number | null;    // 1-5, optional
	tags: string[];
	visibility: EndorsementVisibility;

	// Trust integration
	trustWeight: number;      // 0-1

	createdAt: number;
}

export interface SpaceConfig {
	defaultEconomy: EconomyModel;
	defaultTrustThreshold: number;
	endorsementTagCatalog: string[];
	requireEndorsement: boolean;
	maxRentalDays: number;
}

// ── Top-level document ──

export interface VnbDoc {
	meta: {
		module: string;
		collection: string;
		version: number;
		spaceSlug: string;
		createdAt: number;
	};
	config: SpaceConfig;
	vehicles: Record<string, Vehicle>;
	availability: Record<string, TripWindow>;
	rentals: Record<string, RentalRequest>;
	endorsements: Record<string, Endorsement>;
}

// ── Schema registration ──

export const DEFAULT_ENDORSEMENT_TAGS = [
	'reliable', 'clean', 'suspiciously_clean', 'great_mileage',
	'cozy', 'didnt_break_down', 'smells_like_adventure', 'felt_like_home',
	'better_than_a_hotel', 'surprisingly_spacious', 'good_communication',
	'smooth_handoff',
];

const DEFAULT_CONFIG: SpaceConfig = {
	defaultEconomy: 'suggested',
	defaultTrustThreshold: 30,
	endorsementTagCatalog: DEFAULT_ENDORSEMENT_TAGS,
	requireEndorsement: false,
	maxRentalDays: 30,
};

export const vnbSchema: DocSchema<VnbDoc> = {
	module: 'vnb',
	collection: 'vehicles',
	version: 1,
	init: (): VnbDoc => ({
		meta: {
			module: 'vnb',
			collection: 'vehicles',
			version: 1,
			spaceSlug: '',
			createdAt: Date.now(),
		},
		config: { ...DEFAULT_CONFIG },
		vehicles: {},
		availability: {},
		rentals: {},
		endorsements: {},
	}),
};

// ── Helpers ──

export function vnbDocId(space: string) {
	return `${space}:vnb:vehicles` as const;
}

/** Economy model display labels */
export const ECONOMY_LABELS: Record<EconomyModel, string> = {
	gift: 'Gift Economy',
	suggested: 'Suggested Contribution',
	fixed: 'Fixed Price',
	sliding_scale: 'Sliding Scale',
	exchange: 'Skill/Service Exchange',
};

/** Vehicle type display labels */
export const VEHICLE_TYPE_LABELS: Record<VehicleType, string> = {
	motorhome: 'Motorhome',
	camper_van: 'Camper Van',
	travel_trailer: 'Travel Trailer',
	truck_camper: 'Truck Camper',
	skoolie: 'Skoolie',
	other: 'Other',
};

/** Vehicle type icons */
export const VEHICLE_TYPE_ICONS: Record<VehicleType, string> = {
	motorhome: '\u{1F690}',       // minibus
	camper_van: '\u{1F68C}',      // bus
	travel_trailer: '\u{1F3D5}',  // camping
	truck_camper: '\u{1F6FB}',    // pickup truck
	skoolie: '\u{1F68E}',         // trolleybus
	other: '\u{1F3E0}',           // house
};

/** Mileage policy display labels */
export const MILEAGE_LABELS: Record<MileagePolicy, string> = {
	unlimited: 'Unlimited Miles',
	per_mile: 'Per Mile',
	included_miles: 'Included Miles',
};