import type {
  AssetType, ResultType, AvailabilityStatus, AvailabilityType,
  FreshnessStatus, RiskLevel, SourceType, DataQualityLevel,
} from './enums'
import { AvailabilityStatus as AS } from './enums'
import type { PropertyUnit } from './unit'

// Re-export unit types so all existing imports from 'property' continue to work
export type { PropertyUnit, UnitBundle, UnitNeedMatch } from './unit'

// ── Location / Address ────────────────────────────────────────────────────────

export interface Location {
  city: string
  district?: string
  canton?: string
  region?: string
  country: string
  coordinates?: { lat: number; lng: number }
}

export interface Address {
  street: string
  houseNumber: string
  postalCode: string
  city: string
  country: string
}

// ── Source Metadata ───────────────────────────────────────────────────────────

export interface SourceMeta {
  sourceType: SourceType | string
  sourceLabel?: string
  sourceUrl?: string
  sourceUpdatedAt?: string
  externalId?: string
}

// ── Data Quality ──────────────────────────────────────────────────────────────

export interface DataQuality {
  score: number
  qualityLevel?: DataQualityLevel
  missingCriticalFields: string[]
  missingOptionalFields: string[]
  lastVerifiedAt?: string
  freshness: FreshnessStatus
  warnings: string[]
}

// ── Hard Facts ────────────────────────────────────────────────────────────────

export interface PropertyHardFacts {
  floor?: number
  fitOut?: 'SHELL' | 'BASIC' | 'FULL' | 'PREMIUM'
  parking?: number
  publicTransportScore?: number
  usageType?: string
  ceilingHeightM?: number
  loadingDocksCount?: number
  powerSupplyKva?: number
  hasServerRoom?: boolean
  isBarrierFree?: boolean
  hasAirConditioning?: boolean
  hasStorefront?: boolean
}

// ── Soft Factors ──────────────────────────────────────────────────────────────

export interface SoftFactors {
  prestigeScore?: number
  visibilityScore?: number
  footfallScore?: number
  commuterAccessScore?: number
  talentAccessScore?: number
  esgScore?: number
  flexibilityScore?: number
  expansionPotentialScore?: number
  taxEnvironmentScore?: number
  // Legacy aliases kept for mock-data backward compatibility
  prestige?: number
  accessibility?: number
  talentAccess?: number
  esgRating?: string
  passerbyFrequency?: 'LOW' | 'MEDIUM' | 'HIGH' | 'VERY_HIGH'
  parkingSpots?: number
  publicTransportMinutes?: number
  infrastructureNotes?: string
}

// ── Property ──────────────────────────────────────────────────────────────────

export interface Property {
  id: string
  organizationId?: string
  title: string

  assetType: AssetType
  resultType: ResultType

  location: Location
  address: Address

  areaSqm: number
  areaSqmMin?: number
  areaSqmMax?: number

  rentPricePerSqm: number
  rentChfSqmYear?: number
  totalRentMonthly?: number
  ancillaryCosts?: number

  availabilityDate: string
  availabilityStatus: AvailabilityStatus
  availabilityType?: AvailabilityType

  sourceType: string
  sourceLabel?: string
  sourceUrl?: string
  sourceUpdatedAt?: string
  sourceMeta?: SourceMeta

  confidenceScore: number
  dataQuality: DataQuality

  softFactors?: SoftFactors
  hardFacts?: PropertyHardFacts

  // Legacy fields — kept for backward compat
  floorLevel?: number
  expansionPotentialSqm?: number

  contractDurationMonths?: number
  riskLevel?: RiskLevel
  description?: string
  images?: string[]
  floorPlanUrl?: string
  leaseContractUrl?: string    // link to the signed lease document
  leaseContractName?: string   // display label, e.g. "Mietvertrag 2021–2026"

  propertyNumber?: string
  units?: PropertyUnit[]
  mapImageUrl?: string

  leaseTerm?: string
  leaseStartDate?: string
  leaseEndDate?: string
  breakoutOption?: boolean
  breakoutOptionDate?: string
  currentTenant?: string
  importedFrom?: string
  importedAt?: string
  lastUpdatedAt?: string

  schattenmarktRelease?: { enabled: boolean; leadTimeMonths?: number }

  status?: 'ACTIVE' | 'INACTIVE' | 'DRAFT' | 'ARCHIVED'
  lastReviewedAt?: string
  createdAt: string
  updatedAt: string
}

export type CreatePropertyInput = Omit<Property, 'id' | 'createdAt' | 'updatedAt'>
export type UpdatePropertyInput = Partial<CreatePropertyInput>

/**
 * Returns the rentable units of a property.
 * For properties without explicit units, synthesises one unit from property-level data
 * so that all matching logic can operate uniformly at unit level.
 */
export function getEffectiveUnits(p: Property): PropertyUnit[] {
  if (p.units && p.units.length > 0) return p.units
  return [{
    id: p.id,
    propertyId: p.id,
    floorLevel: p.hardFacts?.floor ?? p.floorLevel ?? 0,
    unitLabel: undefined,
    areaSqm: p.areaSqm,
    available: p.availabilityStatus === AS.AVAILABLE_NOW || p.availabilityStatus === AS.AVAILABLE_SOON,
    rentPricePerSqm: p.rentPricePerSqm,
    currentTenant: p.currentTenant,
    leaseTerm: p.leaseTerm,
    leaseEndDate: p.leaseEndDate,
    schattenmarktRelease: p.schattenmarktRelease?.enabled
      ? { enabled: true, availableFrom: p.leaseEndDate }
      : undefined,
  }]
}