import {z} from 'zod'

export type GetApiV1AnalyticsPoliciesDashboardArgs = {granularity?: string | undefined, channel?: (string | null) | undefined, start_date: string, end_date: string};

export type GetApiV1AnalyticsPoliciesDashboardOptions = {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 actionBreakdownRow = z.object({action: z.string(), mode_bucket: z.string(), count: z.number().int()});

export const violationsTimeseriesRow = z.object({time_bucket: z.string(), evaluations: z.number().int(), violations: z.number().int(), enforced_violations: z.number().int(), shadow_violations: z.number().int()});

export const monitorRolloutRow = z.object({policy_id: z.string(), policy_name: z.string(), strictness: z.string(), evaluations: z.number().int(), would_be_violations: z.number().int(), would_be_rate_pct: z.number(), would_be_blocks: z.number().int(), would_be_redacts: z.number().int(), would_be_appends: z.number().int(), would_be_handoffs: z.number().int(), would_be_approvals: z.number().int(), errors: z.number().int(), avg_latency_ms: z.number().nullable().optional(), p95_latency_ms: z.number().nullable().optional(), response_p95_latency_ms: z.number().nullable().optional()});

export const srcAnalyticsPolicySchemasDashboardEnvelope = z.object({violation_rate: z.array(violationRateRow), action_breakdown: z.array(actionBreakdownRow), violations_timeseries: z.array(violationsTimeseriesRow), monitor_rollout: z.array(monitorRolloutRow)});

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
};

/**
 * One-shot envelope of every policy analytics pipe
 * 
 * GET /v1/analytics/policies/dashboard
 */
export const getApiV1AnalyticsPoliciesDashboard = async (args: GetApiV1AnalyticsPoliciesDashboardArgs, options: GetApiV1AnalyticsPoliciesDashboardOptions) => {
const {baseUrl, fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (args.granularity != null) query.append("granularity", String(args.granularity))
if (args.channel != null) query.append("channel", String(args.channel))
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/dashboard${query.size > 0 ? `?${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(srcAnalyticsPolicySchemasDashboardEnvelope, await res.json())
};