import {z} from 'zod'

export type GetApiVersionsVersionIdDeployEventsArgs = {version_id: string};

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

export const deployStreamConnectedEvent = z.object({type: z.literal("connected").optional(), version_id: z.string()});

export const deployStreamQueuedEvent = z.object({message: z.string().nullable().optional(), timestamp: z.string(), type: z.literal("queued").optional(), version_id: z.string()});

export const deployStreamHelmStartedEvent = z.object({message: z.string().nullable().optional(), timestamp: z.string(), type: z.literal("helm_started").optional(), version_id: z.string()});

export const deployStreamHelmWaitingEvent = z.object({message: z.string().nullable().optional(), timestamp: z.string(), type: z.literal("helm_waiting").optional(), version_id: z.string()});

export const deployStreamReadyEvent = z.object({message: z.string().nullable().optional(), timestamp: z.string(), type: z.literal("ready").optional(), version_id: z.string()});

export const deployStreamFailedEvent = z.object({failure_reason: z.string().nullable().optional(), message: z.string().nullable().optional(), timestamp: z.string(), type: z.literal("failed").optional(), version_id: z.string()});

export const deployStreamRollingBackEvent = z.object({message: z.string().nullable().optional(), timestamp: z.string(), type: z.literal("rolling_back").optional(), version_id: z.string()});

export const deployStreamCompleteEvent = z.object({status: z.string(), type: z.literal("complete").optional()});

export const deployStreamErrorEvent = z.object({message: z.string(), type: z.literal("error").optional()});

export const deployStreamEvent = z.discriminatedUnion("type", [deployStreamConnectedEvent, deployStreamQueuedEvent, deployStreamHelmStartedEvent, deployStreamHelmWaitingEvent, deployStreamReadyEvent, deployStreamFailedEvent, deployStreamRollingBackEvent, deployStreamCompleteEvent, deployStreamErrorEvent]);

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
};

/**
 * Stream Deployment Progress
 * 
 * GET /versions/{version_id}/deploy/events
 */
export const getApiVersionsVersionIdDeployEvents = async (args: GetApiVersionsVersionIdDeployEventsArgs, options: GetApiVersionsVersionIdDeployEventsOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/versions/${encodeURIComponent(String(args.version_id))}/deploy/events${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(deployStreamEvent, await res.json())
};