import {z} from 'zod'

export type CoreapiProofsRequest = {fields?: Array<string> | undefined};

export type CreateApiV2DocumentsDocumentIdVersionsVersionIdProofsArgs = {authorization: string, document_id: string, version_id: string, body: CoreapiProofsRequest};

export type CreateApiV2DocumentsDocumentIdVersionsVersionIdProofsOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const documentsProof = z.object({hash: z.string().optional(), property: z.string().optional(), salt: z.string().optional(), sorted_hashes: z.array(z.string()).optional(), value: z.string().optional()});

export const coreapiProofResponseHeader = z.object({document_id: z.string().optional(), state: z.string().optional(), version_id: z.string().optional()});

export const coreapiProofsResponse = z.object({field_proofs: z.array(documentsProof).optional(), header: coreapiProofResponseHeader.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
};

/**
 * Generates proofs for the fields from a specific document version.
 * 
 * POST /v2/documents/{document_id}/versions/{version_id}/proofs
 */
export const createApiV2DocumentsDocumentIdVersionsVersionIdProofs = async (args: CreateApiV2DocumentsDocumentIdVersionsVersionIdProofsArgs, options?: CreateApiV2DocumentsDocumentIdVersionsVersionIdProofsOptions) => {
const {baseUrl = "http://localhost:8082", fetch: fetchFn = fetch} = options ?? {}

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

if (args.authorization != null) headers.set("authorization", String(args.authorization))

const url = `${baseUrl.replace(/\/+$/, '')}/v2/documents/${encodeURIComponent(String(args.document_id))}/versions/${encodeURIComponent(String(args.version_id))}/proofs${query.size > 0 ? `?${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(coreapiProofsResponse, await res.json())
};