import {z} from 'zod'

export type RumRecoveryCountAttributes = {from: number, query: string, to: number};

export type RumRecoveryCountRequestData = {attributes: RumRecoveryCountAttributes, id?: string | undefined, type?: string | undefined};

export type RumRecoveryCountRequest = {data: RumRecoveryCountRequestData};

export type CreateApiApiV2RumRecoverCountArgs = {body: RumRecoveryCountRequest};

export type CreateApiApiV2RumRecoverCountOptions = {baseUrl?: string | undefined, apiKeyAuth?: string | undefined, appKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const rumRecoveryCountResponseAttributes = z.object({estimated_count: z.number().int().gte(0), max_recoverable_sessions: z.number().int().gte(1).lte(2147483647)});

export const rumRecoveryCountResponseDataType = z.literal("rum_recovery_count");

export const rumRecoveryCountResponseData = z.object({attributes: rumRecoveryCountResponseAttributes, id: z.string(), type: rumRecoveryCountResponseDataType});

export const rumRecoveryCountResponse = z.object({data: rumRecoveryCountResponseData});

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
};

/**
 * Estimate recoverable sessions
 * 
 * POST /api/v2/rum/recover/count
 */
export const createApiApiV2RumRecoverCount = async (args: CreateApiApiV2RumRecoverCountArgs, options?: CreateApiApiV2RumRecoverCountOptions) => {
const {baseUrl = "https://api.datadoghq.com", fetch: fetchFn = fetch, apiKeyAuth, appKeyAuth} = options ?? {}

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

if (apiKeyAuth !== undefined) headers.set("DD-API-KEY", apiKeyAuth)
if (appKeyAuth !== undefined) headers.set("DD-APPLICATION-KEY", appKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/rum/recover/count${query.size > 0 ? `?${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(rumRecoveryCountResponse, await res.json())
};