import {z} from 'zod'

export type CoordinateSignaturePosition = {locator: 'COORDINATES' | 'TAG', signer: string, pageNumber: number, positionX: number, positionY: number, stickerProvider?: ('VISUAL_SIGNATURE_PROVIDER' | 'CUSTOM_VISUAL_SIGNATURE_PROVIDER') | undefined};

export type TagSignaturePosition = {locator: 'COORDINATES' | 'TAG', signer: string, offsetX?: number | undefined, offsetY?: number | undefined, stickerProvider?: ('VISUAL_SIGNATURE_PROVIDER' | 'CUSTOM_VISUAL_SIGNATURE_PROVIDER') | undefined};

export type FileAttachment = {id?: string | undefined, name: string, content: string, contentType: string, externalIdentifier?: string | undefined, signaturePositions?: (Array<CoordinateSignaturePosition | TagSignaturePosition>) | undefined};

export type CreateApiApiProcessProcessIdAttachArgs = {processId: string, body: FileAttachment};

export type CreateApiApiProcessProcessIdAttachOptions = {baseUrl?: string | undefined, SwisscomSignOAuth2?: string | undefined, fetch?: typeof fetch | undefined};

export const fileAttachResponse = z.object({fileId: z.string().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
};

/**
 * Attach documents to process
 * 
 * POST /api/process/{processId}/attach
 */
export const createApiApiProcessProcessIdAttach = async (args: CreateApiApiProcessProcessIdAttachArgs, options?: CreateApiApiProcessProcessIdAttachOptions) => {
const {baseUrl = "https://sign.swisscom.ch/system", fetch: fetchFn = fetch, SwisscomSignOAuth2} = options ?? {}

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

if (SwisscomSignOAuth2 !== undefined) headers.set('authorization', `Bearer ${SwisscomSignOAuth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/process/${encodeURIComponent(String(args.processId))}/attach${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(fileAttachResponse, await res.json())
};