import {z} from 'zod'

export type OnConsumerGroupName = {contains: string, type: 'OnConsumerGroupName'};

export type GroupType = 'Unknown' | 'Classic' | 'Consumer' | 'Share';

export type OnGroupType = {oneOf?: Array<GroupType> | undefined, type: 'OnGroupType'};

export type OnLabels = {key: string, values?: Array<string> | undefined, type: 'OnLabels'};

export type ConsumerGroupState = 'Unknown' | 'PreparingRebalance' | 'CompletingRebalance' | 'Stable' | 'Dead' | 'Empty' | 'Assigning' | 'Reconciling';

export type OnState = {oneOf?: Array<ConsumerGroupState> | undefined, type: 'OnState'};

export type ConsumerGroupFilter = OnConsumerGroupName | OnGroupType | OnLabels | OnState;

export type ConsumerGroupSort = 'ByName' | 'ByState' | 'ByOverallLag' | 'ByMaxLagTimeInSeconds' | 'ByMembers' | 'ByGroupType' | 'ByTopicCount';

export type ConsumerGroupRequest = {page: number, itemsPerPage: number, filter?: Array<ConsumerGroupFilter> | undefined, sort: ConsumerGroupSort, descSort?: boolean | undefined};

export type CreateApiPublicV1ClustersClusterNameConsumergroupsArgs = {clusterName: string, body: ConsumerGroupRequest};

export type CreateApiPublicV1ClustersClusterNameConsumergroupsOptions = {baseUrl: string, httpAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const consumerGroupState = z.enum(["Unknown", "PreparingRebalance", "CompletingRebalance", "Stable", "Dead", "Empty", "Assigning", "Reconciling"]);

export const mapLabelKeyString = z.record(z.string(), z.string());

export const groupType = z.enum(["Unknown", "Classic", "Consumer", "Share"]);

export const indexedConsumerGroup = z.object({name: z.string(), state: consumerGroupState, members: z.number().int(), overallLag: z.number().int().optional(), topics: z.array(z.string()).optional(), maxLagTimeInSeconds: z.number().int().optional(), labels: mapLabelKeyString, groupType: groupType, type: z.literal("IndexedConsumerGroup")});

export const notIndexedConsumerGroup = z.object({name: z.string(), type: z.literal("NotIndexedConsumerGroup")});

export const consumerGroupResponse = z.discriminatedUnion("type", [indexedConsumerGroup, notIndexedConsumerGroup]);

export const pageConsumerGroupResponse = z.object({data: z.array(consumerGroupResponse).optional(), page: z.number().int(), totalPages: z.number().int(), perPage: z.number().int(), totalElements: z.number().int()});

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
};

/**
 * List consumer group
 * 
 * POST /public/v1/clusters/{clusterName}/consumergroups
 */
export const createApiPublicV1ClustersClusterNameConsumergroups = async (args: CreateApiPublicV1ClustersClusterNameConsumergroupsArgs, options: CreateApiPublicV1ClustersClusterNameConsumergroupsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, httpAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/public/v1/clusters/${encodeURIComponent(String(args.clusterName))}/consumergroups${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(pageConsumerGroupResponse, await res.json())
};