import {z} from 'zod'

export type Latitude = number;

export type Longitude = number;

export type GetApiV1PoiArgs = {lat?: Latitude | undefined, lng?: Longitude | undefined, query?: string | undefined, radius?: number | undefined, category?: string | undefined, subCategory?: string | undefined, groupCategory?: string | undefined, entityType?: (Array<'venue' | 'complex' | 'chain'>) | undefined, limit?: number | undefined, skip?: number | undefined, includeFlaggedEntities?: boolean | undefined};

export type GetApiV1PoiOptions = {baseUrl?: string | undefined, apiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const requestId = z.string();

export const searchResponse = z.object({requestId: requestId});

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
};

/**
 * Search for Placer Entities
 * 
 * GET /v1/poi
 */
export const getApiV1Poi = async (args: GetApiV1PoiArgs, options?: GetApiV1PoiOptions) => {
const {baseUrl = "https://papi.placer.ai", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (args.lat != null) query.append("lat", String(args.lat))
if (args.lng != null) query.append("lng", String(args.lng))
if (args.query != null) query.append("query", String(args.query))
if (args.radius != null) query.append("radius", String(args.radius))
if (args.category != null) query.append("category", String(args.category))
if (args.subCategory != null) query.append("subCategory", String(args.subCategory))
if (args.groupCategory != null) query.append("groupCategory", String(args.groupCategory))
if (args.entityType != null) query.append("entityType", args.entityType.join(','))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.skip != null) query.append("skip", String(args.skip))
if (args.includeFlaggedEntities != null) query.append("includeFlaggedEntities", String(args.includeFlaggedEntities))
if (apiKey !== undefined) headers.set("x-api-key", apiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/poi${query.size > 0 ? `?${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(searchResponse, await res.json())
};