import {z} from 'zod'

export type Attribute = {name: string, value: string, unit?: string | undefined};

export type Dimensions = {[key: string]: string};

export type Event = {schemaName: string, id?: string | undefined, timestamp: string, accountId: string, attributes: Array<Attribute>, dimensions: Dimensions};

export type EventCorrectionRequest = {event?: Event | undefined};

export type CreateApiEventsCorrectionArgs = {action: 'UNDO' | 'REDO' | 'REDO_EVENT', require_confirmation?: boolean | undefined, body: EventCorrectionRequest};

export type CreateApiEventsCorrectionOptions = {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 eventCorrectionInfo = z.object({referenceId: z.string(), eventPayload: event, ingestionStatus: ingestionStatus, customerId: z.string().max(50).optional(), source: eventSource.optional(), createdAt: z.string(), status: z.enum(["REVERTED", "REVERTED_AND_REINGESTED", "FAILED"]), reason: z.string()});

export const eventsCorrectionResponse = z.object({data: z.array(eventCorrectionInfo)});

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
};

/**
 * Correct an ingested event
 * 
 * POST /events/correction
 */
export const createApiEventsCorrection = async (args: CreateApiEventsCorrectionArgs, options?: CreateApiEventsCorrectionOptions) => {
const {baseUrl = "https://api.togai.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.action != null) query.append("action", String(args.action))
if (args.require_confirmation != null) query.append("require_confirmation", String(args.require_confirmation))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

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