import {z} from 'zod'

export type SimulationUserContext = {id?: number | undefined, email?: string | undefined, role?: string | undefined, region?: string | undefined, permissions?: Array<string> | undefined, tenant_id?: string | undefined, org_id?: string | undefined};

export type SimulationClientContext = {id?: string | undefined, name?: string | undefined, org_id?: string | undefined, tenant_id?: string | undefined};

export type SimulatePoliciesRequest = {query: string, request_type?: string | undefined, user?: SimulationUserContext | undefined, client?: SimulationClientContext | undefined, context?: {[key: string]: unknown} | undefined};

export type CreateApiApiV1PoliciesSimulateArgs = {'X-Tenant-ID': string, body: SimulatePoliciesRequest};

export type CreateApiApiV1PoliciesSimulateOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const simulationDailyUsage = z.object({used: z.number().int().optional(), limit: z.number().int().optional()});

export const simulatePoliciesResponse = z.object({allowed: z.boolean().optional(), applied_policies: z.array(z.string()).optional(), risk_score: z.number().optional(), required_actions: z.array(z.string()).optional(), processing_time_ms: z.number().int().optional(), total_policies: z.number().int().optional(), dry_run: z.boolean().optional(), simulated_at: z.string().optional(), tier: z.string().optional(), daily_usage: simulationDailyUsage.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
};

/**
 * Simulate policies (dry run)
 * 
 * POST /api/v1/policies/simulate
 */
export const createApiApiV1PoliciesSimulate = async (args: CreateApiApiV1PoliciesSimulateArgs, options?: CreateApiApiV1PoliciesSimulateOptions) => {
const {baseUrl = "https://agent.getaxonflow.com", fetch: fetchFn = fetch} = options ?? {}

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

if (args['X-Tenant-ID'] != null) headers.set("X-Tenant-ID", String(args['X-Tenant-ID']))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/policies/simulate${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(simulatePoliciesResponse, await res.json())
};