import {z} from 'zod'

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

export const transformCheckpointHistory = z.object({id: z.number().int(), status: z.string(), is_savepoint: z.boolean(), trigger_timestamp: z.number().int(), latest_ack_timestamp: z.number().int(), state_size: z.number().int(), end_to_end_duration: z.number().int(), alignment_buffered: z.number().int(), num_subtasks: z.number().int(), num_acknowledged_subtasks: z.number().int()}).and(z.record(z.string(), z.unknown()));

export const transformOperatorState = z.object({operator_id: z.string(), operator_name: z.string(), state_size: z.number().int(), checkpointed_size: z.number().int(), end_to_end_duration: z.number().int(), parallelism: z.number().int()}).and(z.record(z.string(), z.unknown()));

export const transformCheckpointsInfo = z.object({job_id: z.string(), counts: z.record(z.string(), z.unknown()), summary: z.record(z.string(), z.unknown()), latest: transformCheckpointHistory.nullable().optional(), history: z.array(transformCheckpointHistory).optional(), operator_breakdown: z.array(transformOperatorState).optional()}).and(z.record(z.string(), z.unknown()));

export const transformMetric = z.object({tasks: z.number().int().nullable().optional(), latency: z.number().int().nullable().optional(), status: z.string().nullable().optional(), duration: z.number().int().nullable().optional(), start_time: z.union([z.number().int(), z.string(), z.string()]).nullable().optional(), end_time: z.union([z.string(), z.string()]).nullable().optional(), checkpoints: transformCheckpointsInfo.nullable().optional()}).and(z.record(z.string(), z.unknown()));

export const transformsLibraryEnum = z.enum(["fan_out", "sql_join", "enrich", "enrich_async", "map_filter", "toast_handling", "un_nesting", "rollup", "topic_router"]);

export const transformDetailsEntity = z.object({metrics: transformMetric, config: z.array(z.record(z.string(), z.unknown())), id: z.string(), name: z.string(), transform_type: z.union([transformsLibraryEnum, z.string()]).nullable().optional(), sql_query: z.string().nullable().optional(), topic: z.string().nullable().optional(), topic_id: z.string().nullable().optional(), topics: z.array(z.string()).nullable().optional(), topic_ids: z.array(z.string()).nullable().optional()}).and(z.record(z.string(), z.unknown()));

export const transformDetailsRes = z.object({page: z.number().int().optional(), page_size: z.number().int().optional(), total: z.number().int().nullable().optional(), has_next: z.boolean().nullable().optional(), result: z.array(transformDetailsEntity)}).and(z.record(z.string(), z.unknown()));

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 Transform Details
 * 
 * GET /transforms/details
 */
export const getApiTransformsDetails = async (options?: GetApiTransformsDetailsOptions) => {
const {baseUrl = "https://api.streamkap.com", fetch: fetchFn = fetch, FronteggHTTPAuthentication} = options ?? {}

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

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

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