import {z} from 'zod'

export type GetApiProjectProjectIdDocumentDocumentPathArgs = {project_id: string, document_path: string};

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

export const fieldValue: z.ZodType<FieldValue> = z.union([z.object({filename: z.string(), binarydata: z.string(), mimeType: z.string()}), z.object({fields: z.record(z.string(), z.array(z.lazy(() => fieldValue)))}), z.object({fields: z.record(z.string(), z.array(z.lazy(() => fieldValue))), fieldGroupType: z.string()})]);

export const documentField = z.object({name: z.string(), value: z.array(fieldValue)});

export const system = z.object({createdBy: z.string().optional(), createdAt: z.string().optional(), updatedBy: z.string().optional(), updatedAt: z.string().optional()});

export const document = z.object({contentType: z.string(), fields: z.array(documentField), name: z.string(), displayName: z.string(), locale: z.string().optional(), path: z.string(), system: system.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
};

/**
 * Get a document in a specific project
 * 
 * GET /project/{project_id}/document/{document_path}
 */
export const getApiProjectProjectIdDocumentDocumentPath = async (args: GetApiProjectProjectIdDocumentDocumentPathArgs, options?: GetApiProjectProjectIdDocumentDocumentPathOptions) => {
const {baseUrl = "https://developers.bloomreach.io/delivery/site/v2/documents", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/project/${encodeURIComponent(String(args.project_id))}/document/${encodeURIComponent(String(args.document_path))}${query.size > 0 ? `?${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(document, await res.json())
};