import {z} from 'zod'

export type ApiCursorOpts = {failOnWarning?: boolean | undefined, fullCount?: boolean | undefined, intermediateCommitCount?: number | undefined, intermediateCommitSize?: number | undefined, maxTransactionSize?: number | undefined, maxWarningCount?: number | undefined, profile?: number | undefined, skipInaccessibleCollections?: boolean | undefined, stream?: boolean | undefined, 'optimizer.rules'?: Array<string> | undefined};

export type ApiCursor = {batchSize?: number | undefined, bindVars?: {[key: string]: unknown} | undefined, count?: boolean | undefined, options?: ApiCursorOpts | undefined, query: string, ttl?: number | undefined};

export type CreateApiFabricFabricApiCursorArgs = {fabric: unknown, body: ApiCursor};

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

export const apiCursorRc201 = z.object({code: z.number().int().optional(), error: z.boolean(), count: z.number().int().optional(), extra: z.object({}).optional(), hasMore: z.boolean().optional(), id: z.string().optional(), cached: z.boolean().optional(), result: z.array(z.unknown()).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 cursor from C8QL query
 * 
 * POST /_fabric/{fabric}/_api/cursor
 * 
 * Also accepts auth: BearerAuth
 */
export const createApiFabricFabricApiCursor = async (args: CreateApiFabricFabricApiCursorArgs, options: CreateApiFabricFabricApiCursorOptions) => {
const {baseUrl, fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (ApiKeyAuth !== undefined) headers.set("Authorization", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/_fabric/${encodeURIComponent(String(args.fabric))}/_api/cursor${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(apiCursorRc201, await res.json())
};