import {z} from 'zod'

export type GetApiV1AnalyticsModelRouterDashboardArgs = {granularity?: string | undefined, agent_id?: (string | null) | undefined, provider?: (string | null) | undefined, operation?: (string | null) | undefined, start_date: string, end_date: string};

export type GetApiV1AnalyticsModelRouterDashboardOptions = {baseUrl: string, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const costByOrgDailyRow = z.object({time_bucket: z.string(), total_cost_usd: z.number(), input_cost_usd: z.number(), output_cost_usd: z.number(), cache_cost_usd: z.number(), invocations: z.number().int()});

export const costByModelRow = z.object({served_model: z.string(), provider: z.string().nullable().optional(), total_cost_usd: z.number(), input_cost_usd: z.number(), output_cost_usd: z.number(), cache_cost_usd: z.number(), invocations: z.number().int(), p95_ms: z.number(), avg_ms: z.number()});

export const latencyRow = z.object({served_model: z.string(), provider: z.string().nullable().optional(), invocations: z.number().int(), p50_ms: z.number(), p95_ms: z.number(), p99_ms: z.number(), avg_ms: z.number(), max_ms: z.number()});

export const errorRateRow = z.object({organization_id: z.string(), terminal_failures: z.number().int(), terminal_total: z.number().int(), error_rate: z.number()});

export const cacheSavingsRow = z.object({served_model: z.string(), provider: z.string().nullable().optional(), cache_read_tokens: z.number().int(), cache_write_tokens: z.number().int(), cache_cost_usd: z.number(), cache_savings_usd: z.number(), input_cost_usd: z.number(), total_cost_usd: z.number(), invocations: z.number().int(), cache_hit_rate: z.number()});

export const fallbackRateRow = z.object({time_bucket: z.string(), total_calls: z.number().int(), fallback_calls: z.number().int(), fallback_rate: z.number()});

export const modelRouterDashboardEnvelope = z.object({cost_timeseries: z.array(costByOrgDailyRow), cost_by_model: z.array(costByModelRow), latency: z.array(latencyRow), error_rate: z.array(errorRateRow), cache_savings: z.array(cacheSavingsRow), fallback_rate: z.array(fallbackRateRow)});

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 LLM analytics dashboard (fan-out of 6 pipes)
 * 
 * GET /v1/analytics/model-router/dashboard
 */
export const getApiV1AnalyticsModelRouterDashboard = async (args: GetApiV1AnalyticsModelRouterDashboardArgs, options: GetApiV1AnalyticsModelRouterDashboardOptions) => {
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.agent_id != null) query.append("agent_id", String(args.agent_id))
if (args.provider != null) query.append("provider", String(args.provider))
if (args.operation != null) query.append("operation", String(args.operation))
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/model-router/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(modelRouterDashboardEnvelope, await res.json())
};