// Static location intelligence data per city — mock values based on Swiss market context

export interface CityIntelligence {
  vacancyRatePct: number          // Leerstandsquote %
  rentTrend12m: number            // Mietpreisveränderung % (letztes Jahr)
  purchasingPowerIndex: number    // Kaufkraft-Index (CH = 100)
  dominantIndustryClusters: string[]
  plannedInfrastructure: { project: string; timeline: string; impact: string }[]
  medianRentOffice: number        // CHF/m²/Monat (Bürofläche) — getMarketRent rechnet auf Jahr um
  medianRentLogistics: number     // CHF/m²/Monat
  medianRentRetail: number        // CHF/m²/Monat
  avgDaysOnMarket: number         // Durchschnittliche Tage bis Vermietung
  demandStrength: 'LOW' | 'MEDIUM' | 'HIGH' | 'VERY_HIGH'
  taxIndexCanton: number          // Steuerindex 100 = CH-Mittel
  taxCalculatorUrl?: string       // Kantonaler Steuerrechner
}

export const CITY_INTELLIGENCE: Record<string, CityIntelligence> = {
  'Zürich': {
    vacancyRatePct: 2.8,
    rentTrend12m: +4.2,
    purchasingPowerIndex: 128,
    dominantIndustryClusters: ['Finanz & Banking', 'Tech & Startups', 'Medien & Kreativ', 'Pharma & Life Science'],
    plannedInfrastructure: [
      { project: 'Tram Hardbrücke-Verlängerung', timeline: '2027', impact: 'Bessere ÖV-Anbindung Industriequartier' },
      { project: 'Rosengarten-Tunnel', timeline: '2030', impact: 'Entlastung Kreis 5/6, weniger Durchgangsverkehr' },
    ],
    medianRentOffice: 42,
    medianRentLogistics: 14,
    medianRentRetail: 180,
    avgDaysOnMarket: 38,
    demandStrength: 'VERY_HIGH',
    taxIndexCanton: 100,
    taxCalculatorUrl: 'https://www.zh.ch/de/steuern-finanzen/steuerrechner.html',
  },
  'Basel': {
    vacancyRatePct: 4.1,
    rentTrend12m: +1.8,
    purchasingPowerIndex: 112,
    dominantIndustryClusters: ['Pharma & Chemie', 'Logistik & Handel', 'Medizintechnik', 'Finanzdienstleistungen'],
    plannedInfrastructure: [
      { project: 'Basel SBB Südeingang Neubau', timeline: '2026', impact: 'Aufwertung Bahnhofumgebung' },
      { project: 'Regio-S-Bahn Ausbau', timeline: '2028', impact: 'Bessere Grenzpendler-Anbindung' },
    ],
    medianRentOffice: 32,
    medianRentLogistics: 11,
    medianRentRetail: 120,
    avgDaysOnMarket: 52,
    demandStrength: 'HIGH',
    taxIndexCanton: 98,
    taxCalculatorUrl: 'https://www.steuern.bs.ch/steuerrechner',
  },
  'Bern': {
    vacancyRatePct: 3.5,
    rentTrend12m: +2.1,
    purchasingPowerIndex: 108,
    dominantIndustryClusters: ['Bundesverwaltung & NPO', 'Gesundheit', 'Bildung & Forschung', 'Versicherungen'],
    plannedInfrastructure: [
      { project: 'Bernmobil Netzausbau West', timeline: '2026', impact: 'Erschliessung Entwicklungsgebiet Ausserholligen' },
    ],
    medianRentOffice: 28,
    medianRentLogistics: 10,
    medianRentRetail: 95,
    avgDaysOnMarket: 61,
    demandStrength: 'MEDIUM',
    taxIndexCanton: 112,
    taxCalculatorUrl: 'https://www.taxme.ch',
  },
  'Zug': {
    vacancyRatePct: 1.9,
    rentTrend12m: +5.1,
    purchasingPowerIndex: 148,
    dominantIndustryClusters: ['Rohstoffhandel', 'Crypto & Blockchain', 'Holding & Finanzen', 'Tech-Unternehmen'],
    plannedInfrastructure: [
      { project: 'Metrobahn Zug-Luzern', timeline: '2029', impact: 'Direktverbindung Luzern in 18 Min.' },
    ],
    medianRentOffice: 38,
    medianRentLogistics: 13,
    medianRentRetail: 140,
    avgDaysOnMarket: 24,
    demandStrength: 'VERY_HIGH',
    taxIndexCanton: 60,
    taxCalculatorUrl: 'https://www.zg.ch/behoerden/finanzdirektion/steuerverwaltung/steuerrechner',
  },
  'Winterthur': {
    vacancyRatePct: 5.8,
    rentTrend12m: +0.9,
    purchasingPowerIndex: 98,
    dominantIndustryClusters: ['Industrie & Maschinenbau', 'Logistik', 'Gesundheit & Soziales'],
    plannedInfrastructure: [
      { project: 'Stadtraum HB Winterthur', timeline: '2027', impact: 'Aufwertung Bahnhofsumgebung, mehr Frequenz' },
    ],
    medianRentOffice: 22,
    medianRentLogistics: 9,
    medianRentRetail: 75,
    avgDaysOnMarket: 74,
    demandStrength: 'MEDIUM',
    taxIndexCanton: 119,
    taxCalculatorUrl: 'https://www.zh.ch/de/steuern-finanzen/steuerrechner.html',
  },
  'Geneva': {
    vacancyRatePct: 2.2,
    rentTrend12m: +3.6,
    purchasingPowerIndex: 135,
    dominantIndustryClusters: ['Internationale Organisationen', 'Luxusgüter', 'Banking & Private Equity', 'Uhrenindustrie'],
    plannedInfrastructure: [
      { project: 'CEVA Linie Verlängerung', timeline: '2026', impact: 'Bessere Verbindung Lancy-Pont-Rouge' },
    ],
    medianRentOffice: 55,
    medianRentLogistics: 18,
    medianRentRetail: 220,
    avgDaysOnMarket: 31,
    demandStrength: 'HIGH',
    taxIndexCanton: 125,
    taxCalculatorUrl: 'https://www.ge.ch/calculer-impots',
  },
  'St.Gallen': {
    vacancyRatePct: 6.2,
    rentTrend12m: -0.5,
    purchasingPowerIndex: 95,
    dominantIndustryClusters: ['Textil & Mode', 'KMU', 'Logistik', 'Gesundheit'],
    plannedInfrastructure: [],
    medianRentOffice: 19,
    medianRentLogistics: 8,
    medianRentRetail: 65,
    avgDaysOnMarket: 88,
    demandStrength: 'LOW',
    taxIndexCanton: 107,
    taxCalculatorUrl: 'https://www.steuern.sg.ch/home/steuerrechner.html',
  },
}

export function getCityIntelligence(city: string): CityIntelligence | null {
  // Try exact match first, then partial
  if (CITY_INTELLIGENCE[city]) return CITY_INTELLIGENCE[city]
  const key = Object.keys(CITY_INTELLIGENCE).find(k => city.toLowerCase().includes(k.toLowerCase()))
  return key ? CITY_INTELLIGENCE[key] : null
}

/** Median-Marktmiete in CHF/m²/**Jahr** (Daten sind monatlich gespeichert → ×12), passend zu property.rentPricePerSqm. */
export function getMarketRent(city: string, assetType: string): number | null {
  const intel = getCityIntelligence(city)
  if (!intel) return null
  const monthly =
    assetType === 'LOGISTICS' || assetType === 'LIGHT_INDUSTRIAL' ? intel.medianRentLogistics
    : assetType === 'RETAIL' ? intel.medianRentRetail
    : intel.medianRentOffice
  return monthly * 12
}

// ── City coordinates (WGS84) ─────────────────────────────────────────────────

const CITY_COORDS: Record<string, { lat: number; lng: number }> = {
  'Zürich':       { lat: 47.3769, lng: 8.5417 },
  'Zürich-West':  { lat: 47.3862, lng: 8.5195 },
  'Zürich-Nord':  { lat: 47.4108, lng: 8.5450 },
  'Basel':        { lat: 47.5596, lng: 7.5886 },
  'Bern':         { lat: 46.9480, lng: 7.4474 },
  'Luzern':       { lat: 47.0502, lng: 8.3093 },
  'Genf':         { lat: 46.2044, lng: 6.1432 },
  'Lausanne':     { lat: 46.5197, lng: 6.6323 },
  'Zug':          { lat: 47.1661, lng: 8.5158 },
  'Winterthur':   { lat: 47.5004, lng: 8.7256 },
  'St. Gallen':   { lat: 47.4245, lng: 9.3767 },
  'Lugano':       { lat: 46.0037, lng: 8.9511 },
  'Baar':         { lat: 47.1965, lng: 8.5286 },
  'Muttenz':      { lat: 47.5218, lng: 7.6468 },
  'Pratteln':     { lat: 47.5163, lng: 7.6926 },
  'Reinach BL':   { lat: 47.4948, lng: 7.5946 },
  'Allschwil':    { lat: 47.5529, lng: 7.5368 },
  'Binningen':    { lat: 47.5363, lng: 7.5687 },
}

export function lookupCityCoords(location: string): { lat: number; lng: number } | null {
  if (CITY_COORDS[location]) return CITY_COORDS[location]
  // Prefix fallback: "Zürich Kreis 5" → "Zürich"
  const base = location.split(' ')[0]
  const key = Object.keys(CITY_COORDS).find(k => k.startsWith(base) || base === k)
  return key ? CITY_COORDS[key] : null
}