import {z} from 'zod'

export type GetApiV1AnalyticsMocksDashboardArgs = {granularity?: string | undefined, mock_id?: (string | null) | undefined, top_scenarios_limit?: number | undefined, start_date: string, end_date: string};

export type GetApiV1AnalyticsMocksDashboardOptions = {baseUrl: string, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const mockSummaryRow = z.object({requests: z.number().int(), matched_requests: z.number().int(), errors: z.number().int(), match_rate: z.number(), error_rate: z.number(), avg_latency_ms: z.number().nullable().optional(), p95_latency_ms: z.number().nullable().optional()});

export const mockRequestsTimeseriesRow = z.object({time_bucket: z.string(), requests: z.number().int(), matched_requests: z.number().int(), errors: z.number().int()});

export const mockLatencyTimeseriesRow = z.object({time_bucket: z.string(), requests: z.number().int(), avg_latency_ms: z.number().nullable().optional(), p50_latency_ms: z.number().nullable().optional(), p95_latency_ms: z.number().nullable().optional(), p99_latency_ms: z.number().nullable().optional()});

export const mockMatchRateTimeseriesRow = z.object({time_bucket: z.string(), requests: z.number().int(), matched_requests: z.number().int(), match_rate: z.number()});

export const mockTopScenarioRow = z.object({scenario_id: z.string(), scenario_name: z.string(), requests: z.number().int(), avg_latency_ms: z.number().nullable().optional(), p95_latency_ms: z.number().nullable().optional()});

export const mockDashboardEnvelope = z.object({summary: z.array(mockSummaryRow), requests: z.array(mockRequestsTimeseriesRow), latency: z.array(mockLatencyTimeseriesRow), match_rate: z.array(mockMatchRateTimeseriesRow), top_scenarios: z.array(mockTopScenarioRow)});

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 mock analytics pipe
 * 
 * GET /v1/analytics/mocks/dashboard
 */
export const getApiV1AnalyticsMocksDashboard = async (args: GetApiV1AnalyticsMocksDashboardArgs, options: GetApiV1AnalyticsMocksDashboardOptions) => {
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.mock_id != null) query.append("mock_id", String(args.mock_id))
if (args.top_scenarios_limit != null) query.append("top_scenarios_limit", String(args.top_scenarios_limit))
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/mocks/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(mockDashboardEnvelope, await res.json())
};