import {z} from 'zod'

export type GetApiV1GatewayEndpointsArgs = {limit?: number | undefined, cursor?: (string | null) | undefined, slug?: (string | null) | undefined};

export type GetApiV1GatewayEndpointsOptions = {baseUrl: string, OAuth2AuthorizationCodeBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const publicGatewayEndpointProviderRead = z.object({provider_id: z.string(), priority: z.number().int(), weight: z.number(), active: z.boolean()});

export const publicGatewayEndpointRead = z.object({id: z.string(), slug: z.string(), description: z.string().nullable(), providers: z.array(publicGatewayEndpointProviderRead), created_at: z.string()});

export const publicGatewayEndpointsPage = z.object({endpoints: z.array(publicGatewayEndpointRead), next_cursor: z.string().nullable()});

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
};

/**
 * List Gateway Endpoints
 * 
 * GET /v1/gateway/endpoints/
 */
export const getApiV1GatewayEndpoints = async (args: GetApiV1GatewayEndpointsArgs, options: GetApiV1GatewayEndpointsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, OAuth2AuthorizationCodeBearer} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (args.slug != null) query.append("slug", String(args.slug))
if (OAuth2AuthorizationCodeBearer !== undefined) headers.set('authorization', `Bearer ${OAuth2AuthorizationCodeBearer}`)

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