import { getCurrentVisit } from '@/entities/city-visit';
import { getProviderProfile } from '@/entities/provider-profile';
import { listDestinations } from '@/entities/destination';
import { listGalleryItems } from '@/entities/gallery-item';
import { listHeroStripItems } from '@/entities/hero-strip';
import { listLoreSections } from '@/entities/lore-section';
import { listPaymentMethods } from '@/entities/payment-method';
import { assembleProviderRates } from '@/entities/rate-card';
import { listRosterContent } from '@/entities/roster-content';
import { listShopListings } from '@/entities/shop-listing';
import { assembleSiteContent } from '@/entities/site-text';
import { listSpecialtyCategories_withItems } from '@/entities/specialty';
import { listTourStops } from '@/entities/tour-stop';
import { listVerifiedProfiles } from '@/entities/verified-profile';
import type { Sql } from '@/shared/db';
import { logger } from '@/shared/logger';

import type { ProviderData, ProviderTourStop } from './types';

interface CacheEntry {
  readonly data: ProviderData;
  readonly expires: number;
}

const providerConfigCache = new Map<string, CacheEntry>();

export function resetProviderConfigCache(): void {
  providerConfigCache.clear();
}

export interface AssembleProviderConfigInput {
  readonly db: Sql;
  readonly dataApiUrl: string;
  readonly dataApiToken?: string | undefined;
  readonly providerSlug: string;
  readonly today: string;
}

async function fetchFromDataApi(
  dataApiUrl: string,
  providerSlug: string,
  dataApiToken?: string | undefined,
): Promise<ProviderData | null> {
  const cacheKey = providerSlug;
  const now = Date.now();
  const cached = providerConfigCache.get(cacheKey);
  if (cached && now < cached.expires) return cached.data;

  const url = `${dataApiUrl}/api/data`;
  const headers: Record<string, string> = {};
  if (dataApiToken) {
    headers['Authorization'] = `Bearer ${dataApiToken}`;
  }

  try {
    const res = await fetch(url, {
      method: 'GET',
      headers,
      signal: AbortSignal.timeout(5_000),
    });

    if (!res.ok) {
      logger.warn('data-api provider-config fetch failed', { status: res.status, providerSlug });
      return null;
    }

    const data = (await res.json()) as ProviderData;
    providerConfigCache.set(cacheKey, { data, expires: now + 60_000 });
    return data;
  } catch (err) {
    logger.warn('data-api provider-config fetch error', { error: String(err), providerSlug });
    return null;
  }
}

function buildDegradedShape(providerSlug: string): ProviderData {
  return {
    identity: {
      name: providerSlug,
      pronouns: '',
      gender: '',
      location: '',
      secondaryLocations: [],
      languages: [],
      tagline: '',
    },
    physical: {
      age: '',
      height: '',
      bodyType: '',
      ethnicity: '',
      hairColor: '',
      hairLength: '',
      eyeColor: '',
      cupSize: '',
      additional: {},
    },
    rates: [],
    addOns: { entries: [] },
    travelFees: { entries: [] },
    touringPackages: { entries: [] },
    onlineServices: { entries: [] },
    tour: [],
    currentLocation: null,
    gallery: [],
    contact: {
      phone: '',
      communicationNote: '',
      responseTime: '',
      paymentMethods: [],
    },
    policies: [],
    about: {
      bio: '',
      personality: [],
      availableFor: [],
      availableTo: [],
    },
  };
}

export async function assembleProviderConfig(
  input: AssembleProviderConfigInput,
): Promise<ProviderData> {
  const base = await fetchFromDataApi(input.dataApiUrl, input.providerSlug, input.dataApiToken);
  const shape = base ?? buildDegradedShape(input.providerSlug);

  const nativeProfile = await getProviderProfile(input.db, input.providerSlug);
  const identityOverride = nativeProfile ? nativeProfile.identity : shape.identity;
  const physicalOverride = nativeProfile ? nativeProfile.physical : shape.physical;

  const nativeTourStops = await listTourStops(input.db, {
    providerSlug: input.providerSlug,
    publicOnly: true,
  });

  const today = input.today;
  const tour: ProviderTourStop[] = nativeTourStops.map((s) => {
    // null endDate = open-ended (ongoing): never "completed", active once started.
    const timeStatus: 'upcoming' | 'active' | 'completed' =
      today < s.startDate ? 'upcoming' : s.endDate != null && today > s.endDate ? 'completed' : 'active';
    return {
      city: s.city,
      state: s.state,
      startDate: s.startDate,
      endDate: s.endDate,
      status: timeStatus,
      bookingStatus: s.status,
      lat: s.lat,
      lng: s.lng,
      ...(s.destinationSlug && { destinationSlug: s.destinationSlug }),
      ...(s.pricingTiers && {
        pricingTiers: {
          ...(s.pricingTiers.incall !== undefined && { incall: s.pricingTiers.incall }),
          ...(s.pricingTiers.outcall !== undefined && { outcall: s.pricingTiers.outcall }),
          ...(s.pricingTiers.overnight !== undefined && { overnight: s.pricingTiers.overnight }),
        },
      }),
      ...(s.notes !== '' && { notes: s.notes }),
    };
  });

  const cityVisit = await getCurrentVisit(input.db, input.providerSlug);
  const currentLocation = cityVisit
    ? {
        city: cityVisit.city,
        state: cityVisit.state,
        country: cityVisit.country,
        incallAvailable: cityVisit.incallAvailable,
      }
    : null;

  const nativePaymentMethods = await listPaymentMethods(input.db, {
    providerSlug: input.providerSlug,
    visibility: 'public',
  });

  const paymentMethodsOverride: import('../../../../provider-website/shared/src/types').PaymentMethod[] | null =
    nativePaymentMethods.length > 0
      ? nativePaymentMethods.map((pm) => {
          const isUrlKind = pm.kind === 'gift_card' || pm.kind === 'wishlist';
          const base: import('../../../../provider-website/shared/src/types').PaymentMethod = {
            method: pm.label,
          };
          if (isUrlKind) {
            return { ...base, url: pm.value };
          }
          return { ...base, handle: pm.value };
        })
      : null;

  const nativeRates = await assembleProviderRates(input.db, input.providerSlug);

  // Per-city rate selection. When the data-api base shape exposes city-tagged
  // bundles, serve the one for the active city — Quinn's real whereabouts
  // (currentLocation from city_visits) when touring, else her home incallCity,
  // else the null "default" card. The chosen bundle collapses into the flat
  // rate fields the frontend already renders, so switching is invisible to it.
  const activeRateCity = currentLocation?.city ?? identityOverride.incallCity ?? null;
  const cityBundles = shape.rateCardsByCity;
  const selectedCityBundle =
    cityBundles && cityBundles.length > 0
      ? (cityBundles.find((b) => b.city === activeRateCity) ??
         cityBundles.find((b) => b.city === identityOverride.incallCity) ??
         cityBundles.find((b) => b.city === null) ??
         cityBundles[0])
      : undefined;

  const ratesOverride = nativeRates ?? (selectedCityBundle
    ? {
        rates: selectedCityBundle.rates,
        addOns: selectedCityBundle.addOns,
        travelFees: selectedCityBundle.travelFees,
        touringPackages: selectedCityBundle.touringPackages,
        onlineServices: selectedCityBundle.onlineServices,
      }
    : {
        rates: shape.rates,
        addOns: shape.addOns,
        travelFees: shape.travelFees,
        touringPackages: shape.touringPackages,
        onlineServices: shape.onlineServices,
      });

  const nativeSiteContent = await assembleSiteContent(input.db, input.providerSlug);
  const aboutOverride = nativeSiteContent?.about ?? shape.about;
  const etiquetteOverride = nativeSiteContent ? nativeSiteContent.etiquette : shape.etiquette;
  const policiesOverride = nativeSiteContent ? nativeSiteContent.policies : shape.policies;
  const siteTextOverride = nativeSiteContent ? nativeSiteContent.siteText : shape.siteText;

  const nativeDestinations = await listDestinations(input.db, {
    providerSlug: input.providerSlug,
    visibility: 'public',
  });

  const destinationsOverride = nativeDestinations.length > 0
    ? nativeDestinations.map((d) => {
        const mapped: import('../../../../provider-website/shared/src/types').Destination = {
          slug: d.slug,
          city: d.city,
          country: d.country,
          ...(d.region !== null ? { region: d.region } : {}),
          fmtyTier: d.fmtyTier,
          metaTitle: d.metaTitle,
          metaDescription: d.metaDescription,
          headline: d.headline,
          intro: d.intro,
          ...(d.linkedTourStop ? { linkedTourStop: d.linkedTourStop } : {}),
          ...(d.experiences.length > 0 ? { experiences: [...d.experiences] } : {}),
          ...(d.note !== null ? { note: d.note } : {}),
          ...(d.illustrationImage !== null ? { illustrationImage: d.illustrationImage } : {}),
          ...(d.illustrationSide !== null
            ? { illustrationSide: d.illustrationSide as 'left' | 'right' }
            : {}),
          ...(d.illustrationHeight !== null ? { illustrationHeight: d.illustrationHeight } : {}),
          ...(d.illustrationOpacity !== null ? { illustrationOpacity: d.illustrationOpacity } : {}),
          ...(d.lat !== null ? { lat: d.lat } : {}),
          ...(d.lng !== null ? { lng: d.lng } : {}),
        };
        return mapped;
      })
    : shape.destinations;

  const nativeSpecialtiesRaw = await listSpecialtyCategories_withItems(input.db, input.providerSlug);
  const specialtiesOverride = nativeSpecialtiesRaw ? [...nativeSpecialtiesRaw] : shape.specialties;

  const nativeShopListings = await listShopListings(input.db, {
    providerSlug: input.providerSlug,
    availableOnly: false,
  });

  const shopOverride = nativeShopListings.length > 0
    ? nativeShopListings.map((s) => {
        const mapped: import('../../../../provider-website/shared/src/types').ShopListing = {
          id: s.id,
          slug: s.slug,
          title: s.title,
          description: s.description,
          price: s.price,
          currency: s.currency,
          condition: s.condition,
          category: s.category,
          ...(s.size !== null ? { size: s.size } : {}),
          status: s.status,
          photos: s.photos as import('../../../../provider-website/shared/src/types').ShopListingPhoto[],
        };
        return mapped;
      })
    : shape.shop;

  const nativeRosterContent = await listRosterContent(input.db, { providerSlug: input.providerSlug });
  const rosterContentOverride = nativeRosterContent.length > 0
    ? nativeRosterContent.map((r) => {
        const mapped: import('../../../../provider-website/shared/src/types').RosterTrackContent = {
          slug: r.trackSlug,
          name: r.name,
          metaTitle: r.metaTitle,
          metaDescription: r.metaDescription,
          heroLine: r.heroLine,
          description: [...r.description],
          whatToExpect: [...r.whatToExpect],
          interestsConfig: r.interestsConfig.map((i) => ({ value: i.value, label: i.label })),
        };
        return mapped;
      })
    : shape.rosterContent;

  const nativeLoreSections = await listLoreSections(input.db, { providerSlug: input.providerSlug });
  const cultOfLilithOverride = nativeLoreSections.length > 0
    ? nativeLoreSections.map((l) => {
        const mapped: import('../../../../provider-website/shared/src/types').CultOfLilithSection = {
          sectionKey: l.sectionKey,
          title: l.title,
          body: l.body,
        };
        return mapped;
      })
    : shape.cultOfLilith;

  const nativeVerifiedProfiles = await listVerifiedProfiles(input.db, { providerSlug: input.providerSlug });
  const verifiedProfilesOverride = nativeVerifiedProfiles.length > 0
    ? nativeVerifiedProfiles.map((v) => {
        const mapped: import('../../../../provider-website/shared/src/types').VerifiedProfile = {
          platform: v.platform,
          href: v.href,
          imgSrc: v.imgSrc,
          imgAlt: v.imgAlt,
          description: v.description,
        };
        return mapped;
      })
    : shape.verifiedProfiles;

  const nativeGalleryItems = await listGalleryItems(input.db, { providerSlug: input.providerSlug });
  const galleryOverride = nativeGalleryItems.length > 0
    ? nativeGalleryItems.map((g) => {
        const mapped: import('../../../../provider-website/shared/src/types').GalleryItem = {
          src: g.src,
          alt: g.alt,
          reactionKey: g.src,
          ...(g.category !== null ? { category: g.category } : {}),
          ...(g.featured ? { featured: true } : {}),
          ...(g.webpSrc !== null ? { webpSrc: g.webpSrc } : {}),
          ...(g.intrinsicWidth !== null ? { intrinsicWidth: g.intrinsicWidth } : {}),
          ...(g.intrinsicHeight !== null ? { intrinsicHeight: g.intrinsicHeight } : {}),
          ...(g.tags.length > 0 ? { tags: [...g.tags] } : {}),
        };
        return mapped;
      })
    : shape.gallery;

  const nativeHeroStripItems = await listHeroStripItems(input.db, { providerSlug: input.providerSlug });
  const heroStripOverride: import('../../../../provider-website/shared/src/types').HeroStripItem[] | undefined =
    nativeHeroStripItems.length > 0
      ? nativeHeroStripItems.map((h) => {
          if (h.type === 'tour_stop') {
            return {
              id: h.id,
              type: 'tour_stop' as const,
              sortOrder: h.sortOrder,
              city: h.city,
              state: h.state,
              startDate: h.startDate,
              endDate: h.endDate,
              bookingStatus: h.bookingStatus,
              ...(h.availabilityNote !== undefined ? { availabilityNote: h.availabilityNote } : {}),
            };
          }
          return {
            id: h.id,
            type: 'cta' as const,
            sortOrder: h.sortOrder,
            label: h.label,
            ...(h.subtitle !== undefined ? { subtitle: h.subtitle } : {}),
            href: h.href,
          };
        })
      : shape.heroStrip;

  const contactOverride: import('../../../../provider-website/shared/src/types').ContactInfo = paymentMethodsOverride !== null
    ? { ...shape.contact, paymentMethods: paymentMethodsOverride }
    : shape.contact;

  return {
    ...shape,
    contact: contactOverride,
    identity: identityOverride,
    physical: physicalOverride,
    tour,
    currentLocation,
    gallery: galleryOverride ?? shape.gallery,
    rates: ratesOverride.rates,
    addOns: ratesOverride.addOns,
    travelFees: ratesOverride.travelFees,
    touringPackages: ratesOverride.touringPackages,
    onlineServices: ratesOverride.onlineServices,
    about: aboutOverride,
    ...(etiquetteOverride !== undefined ? { etiquette: etiquetteOverride } : {}),
    policies: policiesOverride,
    ...(siteTextOverride !== undefined ? { siteText: siteTextOverride } : {}),
    ...(destinationsOverride !== undefined ? { destinations: destinationsOverride } : {}),
    ...(specialtiesOverride !== undefined ? { specialties: specialtiesOverride } : {}),
    ...(shopOverride !== undefined ? { shop: shopOverride } : {}),
    ...(rosterContentOverride !== undefined ? { rosterContent: rosterContentOverride } : {}),
    ...(cultOfLilithOverride !== undefined ? { cultOfLilith: cultOfLilithOverride } : {}),
    ...(verifiedProfilesOverride !== undefined ? { verifiedProfiles: verifiedProfilesOverride } : {}),
    ...(heroStripOverride !== undefined ? { heroStrip: heroStripOverride } : {}),
  };
}