import {z} from 'zod'

export type GetApiCountriesV5PropertyValueArgs = {property: string, value: string, q?: string | undefined, limit?: number | undefined, offset?: number | undefined, response_fields?: string | undefined, response_fields_omit?: string | undefined, pretty?: boolean | undefined};

export type GetApiCountriesV5PropertyValueOptions = {baseUrl?: string | undefined, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const leader = z.object({assets: z.array(z.object({})).optional(), attributes: z.object({administers_executive: z.boolean().nullable().optional(), de_facto_executive: z.boolean().nullable().optional(), head_of_government: z.boolean().nullable().optional(), head_of_state: z.boolean().nullable().optional(), is_representative: z.boolean().nullable().optional(), pending_office: z.boolean().nullable().optional(), provisional: z.boolean().nullable().optional()}).optional(), links: z.object({wikipedia: z.string().nullable().optional()}).optional(), name: z.string().nullable().optional(), title: z.string().nullable().optional()});

export const leadersNotice = z.object({message: z.string(), sample: z.string()});

export const country = z.object({uuid: z.string().optional(), names: z.object({common: z.string().optional(), official: z.string().optional(), alternates: z.array(z.string()).optional(), native: z.record(z.string(), z.object({common: z.string().optional(), official: z.string().optional()})).optional(), translations: z.record(z.string(), z.object({common: z.string().optional(), official: z.string().optional()})).optional()}).optional(), codes: z.object({alpha_2: z.string().optional(), alpha_3: z.string().optional(), ccn3: z.string().optional(), fips: z.string().optional(), gec: z.string().optional(), fifa: z.string().optional(), cioc: z.string().optional()}).optional(), capitals: z.array(z.object({name: z.string().optional(), coordinates: z.object({lat: z.number().optional(), lng: z.number().optional()}).optional(), attributes: z.object({primary: z.boolean().optional(), constitutional: z.boolean().optional(), administrative: z.boolean().optional(), executive: z.boolean().optional(), legislative: z.boolean().optional(), judicial: z.boolean().optional()}).optional()})).optional(), continents: z.array(z.string()).optional(), region: z.string().optional(), subregion: z.string().optional(), landlocked: z.boolean().optional(), coordinates: z.object({lat: z.number().optional(), lng: z.number().optional()}).optional(), area: z.object({kilometers: z.number().optional(), miles: z.number().optional()}).optional(), borders: z.array(z.string()).optional(), timezones: z.array(z.string()).optional(), government_type: z.string().optional(), leaders: z.array(z.union([leader, leadersNotice])).optional(), flag: z.object({emoji: z.string().optional(), unicode: z.string().optional(), html_entity: z.string().optional(), description: z.string().optional(), url_png: z.string().optional(), url_svg: z.string().optional(), colors: z.object({dominant: z.string().optional(), prominent: z.string().optional(), palette: z.array(z.object({hex: z.string().optional(), proportion: z.number().optional()})).optional(), swatches: z.object({vibrant: z.string().nullable().optional(), muted: z.string().nullable().optional(), dark_vibrant: z.string().nullable().optional(), dark_muted: z.string().nullable().optional(), light_vibrant: z.string().nullable().optional(), light_muted: z.string().nullable().optional()}).optional()}).optional()}).optional(), currencies: z.array(z.object({code: z.string().optional(), name: z.string().optional(), symbol: z.string().optional()})).optional(), population: z.number().int().optional(), economy: z.object({gini_coefficient: z.record(z.string(), z.number()).optional()}).optional(), demonyms: z.record(z.string(), z.object({m: z.string().optional(), f: z.string().optional()})).optional(), languages: z.array(z.object({iso639_1: z.string().optional(), iso639_2t: z.string().optional(), iso639_2b: z.string().optional(), iso639_3: z.string().optional(), bcp47: z.string().optional(), name: z.string().optional(), native_name: z.string().optional()})).optional(), calling_codes: z.array(z.string()).optional(), tlds: z.array(z.string()).optional(), cars: z.object({driving_side: z.enum(["left", "right"]).optional(), signs: z.array(z.string()).optional()}).optional(), postal_code: z.object({format: z.string().optional(), regex: z.string().optional()}).optional(), number_format: z.object({decimal_separator: z.string().optional(), thousands_separator: z.string().optional()}).optional(), units: z.object({measurement_system: z.enum(["metric", "imperial"]).optional(), temperature_scale: z.enum(["Celsius", "Fahrenheit"]).optional()}).optional(), memberships: z.object({un: z.boolean().optional(), african_union: z.boolean().optional(), arab_league: z.boolean().optional(), asean: z.boolean().optional(), brics: z.boolean().optional(), commonwealth: z.boolean().optional(), eu: z.boolean().optional(), eurozone: z.boolean().optional(), g7: z.boolean().optional(), g20: z.boolean().optional(), nato: z.boolean().optional(), oecd: z.boolean().optional(), opec: z.boolean().optional(), schengen: z.boolean().optional()}).optional(), classification: z.object({sovereign: z.boolean().optional(), disputed: z.boolean().optional(), iso_status: z.enum(["official", "user_assigned", "unassigned"]).optional(), un_member: z.boolean().optional(), un_observer: z.boolean().optional(), dependency: z.boolean().optional(), dependency_type: z.string().optional()}).optional(), parent: z.object({alpha_2: z.string().optional(), alpha_3: z.string().optional()}).optional(), date: z.object({start_of_week: z.enum(["monday", "sunday", "saturday"]).optional(), academic_year_start: z.object({month: z.number().int().optional(), day: z.number().int().optional()}).optional(), fiscal_year_start: z.object({government: z.object({month: z.number().int().optional(), day: z.number().int().optional()}).optional(), corporate: z.object({month: z.number().int().optional(), day: z.number().int().optional(), basis: z.string().optional()}).optional(), personal: z.object({month: z.number().int().optional(), day: z.number().int().optional()}).optional()}).optional()}).optional(), links: z.object({wikipedia: z.string().optional(), official: z.string().optional(), google_maps: z.string().optional(), open_street_maps: z.string().optional()}).optional(), assets: z.array(z.object({})).optional()});

export const listMeta = z.object({total: z.number().int(), count: z.number().int(), limit: z.number().int(), offset: z.number().int(), more: z.boolean(), request_id: z.string(), duration: z.number().int()});

export const countryListResponse = z.object({data: z.object({objects: z.array(country), meta: listMeta.optional()})});

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
};

/**
 * Filter by property value
 * 
 * GET /countries/v5/{property}/{value}
 * 
 * Also accepts auth: KeyQuery
 */
export const getApiCountriesV5PropertyValue = async (args: GetApiCountriesV5PropertyValueArgs, options?: GetApiCountriesV5PropertyValueOptions) => {
const {baseUrl = "https://api.restcountries.com", fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (args.q != null) query.append("q", String(args.q))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.offset != null) query.append("offset", String(args.offset))
if (args.response_fields != null) query.append("response_fields", String(args.response_fields))
if (args.response_fields_omit != null) query.append("response_fields_omit", String(args.response_fields_omit))
if (args.pretty != null) query.append("pretty", String(args.pretty))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/countries/v5/${encodeURIComponent(String(args.property))}/${encodeURIComponent(String(args.value))}${query.size > 0 ? `?${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(countryListResponse, await res.json())
};