import {z} from 'zod'

export type GetApiApiLookupArgs = {peppol_id: string};

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

export const queryMetadata = z.object({identifierScheme: z.string(), identifierValue: z.string(), smlDomain: z.string(), timestamp: z.string(), version: z.string()});

export const dnsRecord = z.object({ip: z.string()});

export const dnsInfo = z.object({status: z.string(), smpHostname: z.string().nullable().optional(), smlHostname: z.string(), dnsRecords: z.array(dnsRecord), error: z.string().nullable().optional(), lookupMethod: z.string().nullable().optional()});

export const supportedDocumentType = z.object({scheme: z.string(), value: z.string()});

export const processIdentifier = z.object({scheme: z.string(), value: z.string()});

export const certificate = z.object({status: z.string(), details: z.record(z.string(), z.unknown()).nullable().optional(), error: z.string().nullable().optional()});

export const processEndpoint = z.object({transportProfile: z.string(), address: z.string(), serviceActivationDate: z.string().nullable().optional(), serviceExpirationDate: z.string().nullable().optional(), serviceDescription: z.string().nullable().optional(), technicalContactUrl: z.string().nullable().optional(), technicalInformationUrl: z.string().nullable().optional(), certificate: certificate.nullable().optional()});

export const process = z.object({processId: processIdentifier, endpoints: z.array(processEndpoint)});

export const endpoint = z.object({status: z.string(), url: z.string(), documentTypes: z.array(supportedDocumentType), processes: z.array(process).nullable().optional(), error: z.string().nullable().optional()});

export const serviceMetadata = z.object({status: z.string(), queryTimeMs: z.number(), endpoints: z.array(endpoint), error: z.string().nullable().optional()});

export const businessEntity = z.object({name: z.string().nullable().optional(), countryCode: z.string().nullable().optional(), registrationDate: z.string().nullable().optional(), additionalInformation: z.array(z.string()).nullable().optional()});

export const appSchemasPeppolIdBusinessCard = z.object({status: z.string(), entities: z.array(businessEntity), queryTimeMs: z.number(), error: z.string().nullable().optional()});

export const peppolIdLookupResponse = z.object({queryMetadata: queryMetadata, status: z.string(), errors: z.array(z.string()), dnsInfo: dnsInfo, serviceMetadata: serviceMetadata, businessCard: appSchemasPeppolIdBusinessCard, certificates: z.array(certificate), executionTimeMs: z.number()});

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
};

/**
 * Lookup Peppol ID
 * 
 * GET /api/lookup
 */
export const getApiApiLookup = async (args: GetApiApiLookupArgs, options?: GetApiApiLookupOptions) => {
const {baseUrl = "https://api.e-invoice.be", fetch: fetchFn = fetch} = options ?? {}

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

if (args.peppol_id != null) query.append("peppol_id", String(args.peppol_id))

const url = `${baseUrl.replace(/\/+$/, '')}/api/lookup${query.size > 0 ? `?${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(peppolIdLookupResponse, await res.json())
};