/**
 * iHeartJane Platform Normalizer
 *
 * Normalizes raw Jane/Algolia product responses to canonical format.
 *
 * Jane uses Algolia for product search. Key differences from Dutchie:
 * - Product ID is numeric (not MongoDB ObjectId)
 * - Prices are per-weight (price_gram, price_eighth_ounce, etc.)
 * - Category = strain type (hybrid, indica, sativa)
 * - Kind = product type (vape, flower, edible, etc.)
 */

import { BaseNormalizer } from './base';
import {
  NormalizedProduct,
  NormalizedPricing,
  NormalizedAvailability,
  NormalizedBrand,
  NormalizedCategory,
} from '../types';

export class JaneNormalizer extends BaseNormalizer {
  readonly platform = 'jane';
  readonly supportedVersions = [1];

  // ============================================================
  // EXTRACTION
  // ============================================================

  extractProducts(rawJson: any): any[] {
    // Algolia response format: { hits: [...] }
    if (rawJson?.hits && Array.isArray(rawJson.hits)) {
      return rawJson.hits;
    }

    // Direct array of products
    if (Array.isArray(rawJson)) {
      return rawJson;
    }

    // Products array wrapper
    if (rawJson?.products && Array.isArray(rawJson.products)) {
      return rawJson.products;
    }

    // Try data.hits (nested response)
    if (rawJson?.data?.hits && Array.isArray(rawJson.data.hits)) {
      return rawJson.data.hits;
    }

    console.warn('[JaneNormalizer] Could not extract products from payload');
    return [];
  }

  validatePayload(rawJson: any): { valid: boolean; errors: string[] } {
    const errors: string[] = [];

    if (!rawJson) {
      errors.push('Payload is null or undefined');
      return { valid: false, errors };
    }

    const products = this.extractProducts(rawJson);
    if (products.length === 0) {
      errors.push('No products found in payload');
    }

    // Check for Algolia errors
    if (rawJson?.message) {
      errors.push(`Algolia error: ${rawJson.message}`);
    }

    return { valid: errors.length === 0, errors };
  }

  // ============================================================
  // NORMALIZATION
  // ============================================================

  protected normalizeProduct(rawProduct: any, dispensaryId: number): NormalizedProduct | null {
    const externalId = rawProduct.product_id || rawProduct.objectID;
    if (!externalId) {
      console.warn('[JaneNormalizer] Product missing ID, skipping');
      return null;
    }

    const name = rawProduct.name;
    if (!name) {
      console.warn(`[JaneNormalizer] Product ${externalId} missing name, skipping`);
      return null;
    }

    return {
      externalProductId: String(externalId),
      dispensaryId,
      platform: 'jane',
      platformDispensaryId: '', // Will be set by handler

      // Core fields
      name,
      brandName: rawProduct.brand || null,
      brandId: rawProduct.product_brand_id ? String(rawProduct.product_brand_id) : null,
      category: rawProduct.kind || null, // Jane's "kind" = product type (vape, flower, etc.)
      subcategory: rawProduct.kind_subtype || rawProduct.root_subtype || null,
      type: rawProduct.kind || null,
      strainType: rawProduct.category || null, // Jane's "category" = strain (hybrid, indica, sativa)

      // Potency
      thcPercent: rawProduct.percent_thc ?? null,
      cbdPercent: rawProduct.percent_cbd ?? null,
      thcContent: rawProduct.percent_thc ?? null,
      cbdContent: rawProduct.percent_cbd ?? null,

      // Status - Jane products in search are always active
      status: 'Active',
      isActive: true,
      medicalOnly: rawProduct.store_types?.includes('medical') && !rawProduct.store_types?.includes('recreational'),
      recOnly: rawProduct.store_types?.includes('recreational') && !rawProduct.store_types?.includes('medical'),

      // Images
      primaryImageUrl: rawProduct.image_urls?.[0] || null,
      images: (rawProduct.image_urls || []).map((url: string, i: number) => ({
        url,
        position: i,
      })),

      // Raw reference
      rawProduct,
    };
  }

  protected normalizePricing(rawProduct: any): NormalizedPricing | null {
    const externalId = rawProduct.product_id || rawProduct.objectID;
    if (!externalId) return null;

    // Jane has multiple price fields by weight
    const prices: number[] = [];
    const specialPrices: number[] = [];

    // Collect all regular prices
    if (rawProduct.price_gram) prices.push(rawProduct.price_gram);
    if (rawProduct.price_each) prices.push(rawProduct.price_each);
    if (rawProduct.price_half_gram) prices.push(rawProduct.price_half_gram);
    if (rawProduct.price_eighth_ounce) prices.push(rawProduct.price_eighth_ounce);
    if (rawProduct.price_quarter_ounce) prices.push(rawProduct.price_quarter_ounce);
    if (rawProduct.price_half_ounce) prices.push(rawProduct.price_half_ounce);
    if (rawProduct.price_ounce) prices.push(rawProduct.price_ounce);
    if (rawProduct.price_two_gram) prices.push(rawProduct.price_two_gram);

    // Collect special/discounted prices
    if (rawProduct.special_price_gram) specialPrices.push(rawProduct.special_price_gram);
    if (rawProduct.special_price_each) specialPrices.push(rawProduct.special_price_each);
    if (rawProduct.discounted_price_gram) specialPrices.push(rawProduct.discounted_price_gram);
    if (rawProduct.discounted_price_each) specialPrices.push(rawProduct.discounted_price_each);

    // Also check bucket_price and sort_price
    if (rawProduct.bucket_price && !prices.includes(rawProduct.bucket_price)) {
      prices.push(rawProduct.bucket_price);
    }

    // Determine if on special
    const isOnSpecial = specialPrices.length > 0 || rawProduct.has_brand_discount === true;

    // Calculate discount percent
    let discountPercent: number | null = null;
    if (isOnSpecial && prices.length > 0 && specialPrices.length > 0) {
      const regularMin = Math.min(...prices);
      const specialMin = Math.min(...specialPrices);
      if (regularMin > 0 && specialMin < regularMin) {
        discountPercent = Math.round(((regularMin - specialMin) / regularMin) * 100);
      }
    }

    // Get special name from brand_special_prices
    let specialName: string | null = null;
    if (rawProduct.brand_special_prices) {
      const firstSpecial = Object.values(rawProduct.brand_special_prices)[0] as any;
      if (firstSpecial?.title) {
        specialName = firstSpecial.title;
      }
    }

    return {
      externalProductId: String(externalId),

      // Use minimum price for display
      priceRec: this.toCents(this.getMin(prices)),
      priceRecMin: this.toCents(this.getMin(prices)),
      priceRecMax: this.toCents(this.getMax(prices)),
      priceRecSpecial: this.toCents(this.getMin(specialPrices)),

      // Jane doesn't distinguish med pricing in Algolia response
      priceMed: null,
      priceMedMin: null,
      priceMedMax: null,
      priceMedSpecial: null,

      isOnSpecial,
      specialName,
      discountPercent,
    };
  }

  protected normalizeAvailability(rawProduct: any): NormalizedAvailability | null {
    const externalId = rawProduct.product_id || rawProduct.objectID;
    if (!externalId) return null;

    // Jane products in Algolia are in-stock (OOS products aren't returned)
    const availableForPickup = rawProduct.available_for_pickup ?? true;
    const availableForDelivery = rawProduct.available_for_delivery ?? false;
    const inStock = availableForPickup || availableForDelivery;

    // Jane doesn't expose quantity in Algolia
    const quantity = rawProduct.max_cart_quantity || null;

    return {
      externalProductId: String(externalId),
      inStock,
      stockStatus: inStock ? 'in_stock' : 'out_of_stock',
      quantity,
      quantityAvailable: quantity,
      isBelowThreshold: false, // Jane doesn't expose this
      optionsBelowThreshold: false,
    };
  }

  protected extractBrand(rawProduct: any): NormalizedBrand | null {
    const brandName = rawProduct.brand;
    if (!brandName) return null;

    return {
      externalBrandId: rawProduct.product_brand_id ? String(rawProduct.product_brand_id) : null,
      name: brandName,
      slug: this.slugify(brandName),
      logoUrl: rawProduct.brand_logo_url || null,
    };
  }

  protected extractCategory(rawProduct: any): NormalizedCategory | null {
    // Use "kind" as the primary category (vape, flower, edible, etc.)
    const categoryName = rawProduct.kind;
    if (!categoryName) return null;

    return {
      name: categoryName,
      slug: this.slugify(categoryName),
      parentCategory: null,
    };
  }
}