import {z} from 'zod'

export type ClientRequest = {query: string, user_token?: string | undefined, client_id: string, request_type?: ('sql' | 'llm_chat' | 'rag_search' | 'mcp-query' | 'multi-agent-plan') | undefined, skip_llm?: boolean | undefined, context?: {[key: string]: unknown} | undefined, media?: Array<{[key: string]: unknown}> | undefined};

export type CreateApiApiRequestArgs = {Authorization: string, 'X-Client-Secret'?: string | undefined, body: ClientRequest};

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

export const policyEvaluationInfo = z.object({matched_policies: z.array(z.string()).optional(), policies_evaluated: z.array(z.string()).optional(), static_checks: z.array(z.string()).optional(), processing_time: z.string().optional(), tenant_id: z.string().optional(), code_artifact: z.record(z.string(), z.unknown()).optional()});

export const clientResponse = z.object({success: z.boolean().optional(), data: z.unknown(), result: z.string().optional(), plan_id: z.string().optional(), metadata: z.record(z.string(), z.unknown()).optional(), error: z.string().optional(), code: z.enum(["ERR_TIER_LIMIT_HUMAN_PRINCIPAL", "ERR_TIER_LIMIT_SERVICE_PRINCIPAL", "ERR_TIER_LIMIT_ORG_ROOT_POLICY", "ERR_TIER_LIMIT_NODE"]).optional(), blocked: z.boolean().optional(), block_reason: z.string().optional(), policy_info: policyEvaluationInfo.optional(), budget_info: z.record(z.string(), z.unknown()).optional(), media_analysis: z.record(z.string(), z.unknown()).optional(), engine: z.literal("anchored").optional(), subject_type: z.string().optional(), policy_bundle: z.string().optional(), policy_packs: z.array(z.string()).optional(), legacy_validators: z.array(z.object({validator: z.enum(["indonesia_pii", "india_pii"]), action: z.enum(["blocked", "masked"])})).optional(), response_plane: z.object({engine: z.literal("anchored").optional(), subject_type: z.string().optional(), policy_bundle: z.string().optional(), verdict: z.enum(["allowed", "redacted", "blocked"]).optional()}).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
};

/**
 * Process client request
 * 
 * POST /api/request
 */
export const createApiApiRequest = async (args: CreateApiApiRequestArgs, options?: CreateApiApiRequestOptions) => {
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.Authorization != null) headers.set("Authorization", String(args.Authorization))
if (args['X-Client-Secret'] != null) headers.set("X-Client-Secret", String(args['X-Client-Secret']))

const url = `${baseUrl.replace(/\/+$/, '')}/api/request${query.size > 0 ? `?${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(clientResponse, await res.json())
};