import {z} from 'zod'

export type InterestsEnum = 'ALL' | 'ANIMALS' | 'ARCHITECTURE' | 'ART' | 'BEAUTY' | 'DIY_AND_CRAFTS' | 'EDUCATION' | 'EVENT_PLANNING' | 'FASHION' | 'FOOD_AND_DRINKS' | 'GARDENING' | 'HEALTH' | 'HOME_DECOR' | 'PARENTING' | 'TRAVEL' | 'WEDDING';

export type ProductCategoryRegion = 'US' | 'GB+IE' | 'CA';

export type GetApiTrendsTopicsFeaturedArgs = {interest?: InterestsEnum | undefined, region: ProductCategoryRegion};

export type GetApiTrendsTopicsFeaturedOptions = {baseUrl?: string | undefined, pinterestOauth2?: string | undefined, fetch?: typeof fetch | undefined};

export const interestsEnum = z.enum(["ALL", "ANIMALS", "ARCHITECTURE", "ART", "BEAUTY", "DIY_AND_CRAFTS", "EDUCATION", "EVENT_PLANNING", "FASHION", "FOOD_AND_DRINKS", "GARDENING", "HEALTH", "HOME_DECOR", "PARENTING", "TRAVEL", "WEDDING"]);

export const productCategoryRegion = z.enum(["US", "GB+IE", "CA"]);

export const trendingPin = z.object({color: z.string(), height: z.number().int(), id: z.string(), src: z.string(), vertical_offset: z.number().optional(), width: z.number().int()});

export const trendingTopic = z.object({description: z.string(), id: z.string(), percent_growth_mom: z.number().int().optional(), pins: z.array(trendingPin), related_interests: z.array(z.string()), related_searches: z.array(z.string()), time_series: z.record(z.string(), z.number()), title: z.string()});

export const featuredTrend = z.object({interest: interestsEnum, market: productCategoryRegion.optional(), trends: z.array(trendingTopic).optional()});

export const getApiTrendsTopicsFeaturedResponse = z.array(featuredTrend);

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Get featured topics
 * 
 * GET /trends/topics/featured
 * 
 * Also accepts auth: client_credentials
 */
export const getApiTrendsTopicsFeatured = async (args: GetApiTrendsTopicsFeaturedArgs, options?: GetApiTrendsTopicsFeaturedOptions) => {
const {baseUrl = "https://api.pinterest.com/v5", fetch: fetchFn = fetch, pinterestOauth2} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (args.interest != null) query.append("interest", String(args.interest))
if (args.region != null) query.append("region", String(args.region))
if (pinterestOauth2 !== undefined) headers.set('authorization', `Bearer ${pinterestOauth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/trends/topics/featured${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(getApiTrendsTopicsFeaturedResponse, await res.json())
};