import {z} from 'zod'

export type CatalogRequest = {request_id: string, snapshot_id?: (string | null) | undefined, limit?: number | undefined, cursor?: (string | null) | undefined};

export type CreateApiPublicV1GenesCatalogArgs = {body: CatalogRequest};

export type CreateApiPublicV1GenesCatalogOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const catalogEntry = z.object({gene_id: z.string(), canonical_symbol: z.string().min(1).max(200)});

export const catalogResponse = z.object({schema_version: z.literal("1.0").optional(), request_id: z.string(), snapshot_id: z.string(), count_unit: z.literal("approved_human_hgnc_gene").optional(), total: z.number().int().gte(0), entries: z.array(catalogEntry), returned: z.number().int().gte(0).lte(1000), 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
};

/**
 * Gene Catalog
 * 
 * POST /public/v1/genes/catalog
 */
export const createApiPublicV1GenesCatalog = async (args: CreateApiPublicV1GenesCatalogArgs, options: CreateApiPublicV1GenesCatalogOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/public/v1/genes/catalog${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

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