import {z} from 'zod'

export type LastModifiedFilter = {start?: string | undefined, end?: string | undefined};

export type ExtractTimestampFilter = {start?: string | undefined, end?: string | undefined};

export type RecordsFilter = {record_ids: Array<string>};

export type LoadFilterOptions = {type: 'last_modified', last_modified: LastModifiedFilter} | {type: 'extract_timestamp', extract_timestamp: ExtractTimestampFilter} | {type: 'records', records: RecordsFilter};

export type InitializeLoadRequest = {filter?: LoadFilterOptions | undefined};

export type CreateApiImportStreamsIdLoadArgs = {id: string, body: InitializeLoadRequest};

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

export const errorResource = z.object({error_code: z.string(), title: z.string(), blame: z.string(), documentation_url: z.string(), trace: z.string(), message: z.string()});

export const loadResource = z.object({id: z.string(), stream_id: z.string(), submitted_at: z.string(), started_at: z.string().optional(), ended_at: z.string().optional(), records_processed: z.number().int().optional(), records_transformed: z.number().int().optional(), records_valid: z.number().int().optional(), records_loaded: z.number().int().optional(), records_errored: z.number().int().optional(), error: errorResource.optional(), record_ids: z.array(z.string()).optional(), actor_id: z.string(), actor_type: z.string()});

export const initializeLoadResponse = z.object({load: loadResource});

export const createApiImportStreamsIdLoadResponse = z.object({status: z.literal("success"), data: initializeLoadResponse, message: z.string()});

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
};

/**
 * Initialize load
 * 
 * POST /import/streams/{id}/load
 */
export const createApiImportStreamsIdLoad = async (args: CreateApiImportStreamsIdLoadArgs, options?: CreateApiImportStreamsIdLoadOptions) => {
const {baseUrl = "https://api.prequel.co", 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("X-API-KEY", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/import/streams/${encodeURIComponent(String(args.id))}/load${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(createApiImportStreamsIdLoadResponse, await res.json())
};