import {z} from 'zod'

export type GetApiEventsArgs = {nextToken?: string | undefined, status?: string | undefined, account_id?: string | undefined, schema_name?: string | undefined, pageSize?: number | undefined};

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

export const attribute = z.object({name: z.string().min(1).max(50), value: z.string(), unit: z.string().min(1).max(50).optional()});

export const dimensions = z.record(z.string(), z.string().min(1).max(200));

export const event = z.object({schemaName: z.string().min(1).max(50), id: z.string().max(512).optional(), timestamp: z.string(), accountId: z.string().max(512), attributes: z.array(attribute), dimensions: dimensions});

export const ingestionStatus = z.object({status: z.enum(["INGESTION_IN_PROGRESS", "INGESTION_FAILED", "INGESTION_FAILED_SCHEMA_NOT_DEFINED", "INGESTION_FAILED_ENRICHMENT_FAILED", "INGESTION_FAILED_UNITS_INVALID", "INGESTION_COMPLETED_NO_MATCHING_METERS", "INGESTION_COMPLETED_EVENT_METERED", "INGESTION_COMPLETED_EVENT_NOT_METERED", "INGESTION_FAILED_PAST_GRACE_PERIOD", "INGESTION_FAILED_ACCOUNT_NOT_FOUND", "INGESTION_FAILED_DUPLICATE_EVENT", "INGESTION_FAILED_NO_EVENT_ID", "INGESTION_FAILED_INVALID_NAMED_LICENSE_EVENT", "INGESTION_FAILED_INSUFFICIENT_CREDITS", "REVERTED", "UNKNOWN"]), statusDescription: z.string().max(250).optional()});

export const eventSource = z.object({id: z.string().max(100), type: z.string().max(100)});

export const eventWithStatus = z.object({referenceId: z.string(), eventPayload: event, ingestionStatus: ingestionStatus, customerId: z.string().max(50).optional(), source: eventSource.optional(), createdAt: z.string()});

export const getEventsResponse = z.object({events: z.array(eventWithStatus), nextToken: z.string().max(500).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 list of usage events with multiple query options
 * 
 * GET /events
 */
export const getApiEvents = async (args: GetApiEventsArgs, options?: GetApiEventsOptions) => {
const {baseUrl = "https://api.togai.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.nextToken != null) query.append("nextToken", String(args.nextToken))
if (args.status != null) query.append("status", String(args.status))
if (args.account_id != null) query.append("account_id", String(args.account_id))
if (args.schema_name != null) query.append("schema_name", String(args.schema_name))
if (args.pageSize != null) query.append("pageSize", String(args.pageSize))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

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