import {z} from 'zod'

export type GetApiApiV1DecisionsArgs = {'X-Tenant-ID': string, limit?: number | undefined, since?: string | undefined, decision?: ('allowed' | 'blocked' | 'redacted' | 'needs_approval' | 'error') | undefined, policy_id?: string | undefined, tool_signature?: string | undefined};

export type GetApiApiV1DecisionsOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const decisionListItem = z.object({decision_id: z.string().optional(), timestamp: z.string().optional(), decision: z.enum(["allowed", "blocked", "redacted", "needs_approval", "error"]).optional(), policy_id: z.string().optional(), tool_signature: z.string().optional(), context: z.record(z.string(), z.string()).optional(), transfer_basis: z.string().optional(), data_residency: z.string().optional()});

export const decisionListResponse = z.object({decisions: z.array(decisionListItem).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 recent governance decisions
 * 
 * GET /api/v1/decisions
 */
export const getApiApiV1Decisions = async (args: GetApiApiV1DecisionsArgs, options?: GetApiApiV1DecisionsOptions) => {
const {baseUrl = "https://orchestrator.getaxonflow.com", fetch: fetchFn = fetch} = options ?? {}

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

if (args['X-Tenant-ID'] != null) headers.set("X-Tenant-ID", String(args['X-Tenant-ID']))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.since != null) query.append("since", String(args.since))
if (args.decision != null) query.append("decision", String(args.decision))
if (args.policy_id != null) query.append("policy_id", String(args.policy_id))
if (args.tool_signature != null) query.append("tool_signature", String(args.tool_signature))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/decisions${query.size > 0 ? `?${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(decisionListResponse, await res.json())
};