import {z} from 'zod'

export type GetApiApiCircuitBreakerPoliciesOptions = {baseUrl?: string | undefined, ManagementBearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const getApiApiCircuitBreakerPoliciesResponse = z.object({policies: z.array(z.object({name: z.string(), enabled: z.boolean().optional(), primary_provider: z.string(), primary_model: z.string(), primary_key_ids: z.array(z.string()).optional(), fallback_provider: z.string(), fallback_model: z.string(), condition: z.object({operator: z.enum(["OR", "AND"]).optional(), signals: z.array(z.object({source: z.literal("response_header"), header_name: z.string(), header_value: z.string().optional(), header_contains: z.string().optional()}))}), default_cooldown: z.union([z.string(), z.number().int()]).optional(), cooldown_header: z.string().optional()})).optional(), count: z.number().int().optional()});

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
};

/**
 * List circuit breaker policies
 * 
 * GET /api/circuit-breaker/policies
 */
export const getApiApiCircuitBreakerPolicies = async (options?: GetApiApiCircuitBreakerPoliciesOptions) => {
const {baseUrl = "http://localhost:8080", fetch: fetchFn = fetch, ManagementBearerAuth} = options ?? {}

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

if (ManagementBearerAuth !== undefined) headers.set('authorization', `Bearer ${ManagementBearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/circuit-breaker/policies${query.size > 0 ? `?${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(getApiApiCircuitBreakerPoliciesResponse, await res.json())
};