import {z} from 'zod'

export type GetApiApiV2ExperimentsExperimentIdAnalysisPlanArgs = {experiment_id: string};

export type GetApiApiV2ExperimentsExperimentIdAnalysisPlanOptions = {baseUrl?: string | undefined, apiKeyAuth?: string | undefined, appKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const experimentsAnalysisPlanV2MutationResponseDataAttributesBayesianPrior = z.object({degrees_of_freedom: z.number().nullable().optional(), standard_deviation: z.number().optional()});

export const experimentsAnalysisPlanV2DTODataAttributesConfidenceIntervalMethod = z.enum(["Sequential", "FixedSample", "Bayesian", "SequentialFixedHybrid"]);

export const experimentsAnalysisPlanV2MutationResponseDataAttributes = z.object({bayesian_prior: experimentsAnalysisPlanV2MutationResponseDataAttributesBayesianPrior.optional(), confidence_interval_method: experimentsAnalysisPlanV2DTODataAttributesConfidenceIntervalMethod.optional(), confidence_level: z.number().optional(), cuped_lookback_period_days: z.number().int().optional(), experiment_auto_end_days: z.number().int().optional(), experiment_min_duration: z.number().int().optional(), experiment_min_sample_size: z.number().int().optional(), has_custom_analysis_settings: z.boolean().optional(), is_cuped_enabled: z.boolean().optional(), is_multiple_testing_correction_enabled: z.boolean().optional(), preferential_bonferroni_primary_metric_weight: z.number().optional(), target_duration_days: z.number().int().nullable().optional()});

export const experimentsAnalysisPlanWriteV2RequestDataType = z.literal("analysis-plans");

export const experimentsAnalysisPlanV2DTOData = z.object({attributes: experimentsAnalysisPlanV2MutationResponseDataAttributes.optional(), id: z.string(), type: experimentsAnalysisPlanWriteV2RequestDataType});

export const experimentsAnalysisPlanV2DTO = z.object({data: experimentsAnalysisPlanV2DTOData});

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 experiment analysis plan
 * 
 * GET /api/v2/experiments/{experiment_id}/analysis-plan
 * 
 * Also accepts auth: AuthZ
 */
export const getApiApiV2ExperimentsExperimentIdAnalysisPlan = async (args: GetApiApiV2ExperimentsExperimentIdAnalysisPlanArgs, options?: GetApiApiV2ExperimentsExperimentIdAnalysisPlanOptions) => {
const {baseUrl = "https://api.datadoghq.com", fetch: fetchFn = fetch, apiKeyAuth, appKeyAuth} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
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/experiments/${encodeURIComponent(String(args.experiment_id))}/analysis-plan${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(experimentsAnalysisPlanV2DTO, await res.json())
};