import {z} from 'zod'

export type CreateApiCreateDocumentArgs = {body: {automationId: string, docId?: string | undefined, data?: {[key: string]: unknown} | undefined, documentName?: string | undefined, async?: boolean | undefined, webhookParams?: {[key: string]: unknown} | undefined, existingPdfs?: Array<string> | undefined, docTemplateLink?: string | undefined, wordTemplateLink?: string | undefined, wordTemplateBase64?: string | undefined, pdfTemplateLink?: string | undefined, pdfTemplateBase64?: string | undefined, recipients?: (Array<{signer?: number | undefined, email: string, name?: string | undefined}>) | undefined}};

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

export const documentCreationResponse = z.object({message: z.string().optional(), pdfUrl: z.string().optional(), documentName: z.string().optional(), googleDocUrl: z.string().optional(), savePdfGoogleDriveUrl: z.string().optional(), savePdfGoogleDriveFileId: z.string().optional(), signingSessionId: z.string().optional(), signingStatus: z.enum(["created", "queued", "awaiting_approval"]).optional(), approval: z.object({status: z.literal("pending").optional(), rule: z.enum(["all", "any"]).optional(), condition: z.object({}).nullable().optional(), approvers: z.array(z.object({name: z.string().optional(), email: z.string().optional()})).optional()}).optional(), signingLinks: z.array(z.object({signerIndex: z.number().int().optional(), email: z.string().optional(), name: z.string().optional(), signingUrl: z.string().optional(), status: z.string().optional()})).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
};

/**
 * Create a document
 * 
 * POST /createDocument
 */
export const createApiCreateDocument = async (args: CreateApiCreateDocumentArgs, options?: CreateApiCreateDocumentOptions) => {
const {baseUrl = "https://api.docsautomator.co", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

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

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