import {z} from 'zod'

export type ResourceId = string;

export type GetApiOriginsOriginIdArgs = {Authorization: string, 'X-Elli-PAT': string, origin_id: ResourceId};

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

export const resourceId = z.string();

export const entityRef = z.object({entityId: z.string().optional(), entityType: z.literal("urn:elli:encompass:loan").optional()});

export const productOriginView = z.object({id: resourceId.optional(), partnerId: z.unknown().optional(), name: z.unknown().optional()});

export const credentials = z.record(z.string(), z.union([z.string(), z.number().int(), z.number(), z.boolean()]));

export const user = z.object({name: z.string().optional(), role: z.string().optional(), email: z.string().optional(), phone: z.string().optional()});

export const organization = z.object({name: z.string().optional(), address: z.string().optional(), city: z.string().optional(), state: z.string().optional(), postalCode: z.string().optional(), pointOfContact: user.optional()});

export const origin = z.object({id: resourceId.optional(), entityRef: entityRef.optional(), loanFormat: z.literal("application/vnd.plm-2.0.0+json").optional(), loan: z.object({}).optional(), interfaceUrl: z.unknown().optional(), product: productOriginView.optional(), credentials: credentials.optional(), environment: z.unknown().optional(), originatingParty: organization.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
};

/**
 * Retrieve an origin resource
 * 
 * GET /origins/{origin_id}
 */
export const getApiOriginsOriginId = async (args: GetApiOriginsOriginIdArgs, options?: GetApiOriginsOriginIdOptions) => {
const {baseUrl = "https://api.elliemae.com/oauth2/v1", fetch: fetchFn = fetch} = options ?? {}

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

if (args.Authorization != null) headers.set("Authorization", String(args.Authorization))
if (args['X-Elli-PAT'] != null) headers.set("X-Elli-PAT", String(args['X-Elli-PAT']))

const url = `${baseUrl.replace(/\/+$/, '')}/origins/${encodeURIComponent(String(args.origin_id))}${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(origin, await res.json())
};