import {z} from 'zod'

export type GetApiV1AnalyticsPoliciesViolationRateArgs = {enforcement_point?: (string | null) | undefined, channel?: (string | null) | undefined, strictness?: (string | null) | undefined, start_date: string, end_date: string};

export type GetApiV1AnalyticsPoliciesViolationRateOptions = {baseUrl: string, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const violationRateRow = z.object({policy_id: z.string(), policy_name: z.string(), strictness: z.string(), evaluations: z.number().int(), violations: z.number().int(), violation_rate_pct: z.number(), enforced: z.number().int(), would_be: z.number().int(), errors: z.number().int(), avg_latency_ms: z.number().nullable().optional()});

export const getApiV1AnalyticsPoliciesViolationRateResponse = z.array(violationRateRow);

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
};

/**
 * Per-policy violation rate + action counts within a window
 * 
 * GET /v1/analytics/policies/violation-rate
 */
export const getApiV1AnalyticsPoliciesViolationRate = async (args: GetApiV1AnalyticsPoliciesViolationRateArgs, options: GetApiV1AnalyticsPoliciesViolationRateOptions) => {
const {baseUrl, fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (args.enforcement_point != null) query.append("enforcement_point", String(args.enforcement_point))
if (args.channel != null) query.append("channel", String(args.channel))
if (args.strictness != null) query.append("strictness", String(args.strictness))
if (args.start_date != null) query.append("start_date", String(args.start_date))
if (args.end_date != null) query.append("end_date", String(args.end_date))
if (APIKeyHeader !== undefined) headers.set("x-api-key", APIKeyHeader)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/analytics/policies/violation-rate${query.size > 0 ? `?${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(getApiV1AnalyticsPoliciesViolationRateResponse, await res.json())
};