import {z} from 'zod'

export type CreateApiApiV1PlansPlanIdStepsStepIdApproveArgs = {planId: string, stepId: string, body: {approved_by?: string | undefined, comment?: string | undefined}};

export type CreateApiApiV1PlansPlanIdStepsStepIdApproveOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const policyMatch = z.object({policy_id: z.string().optional(), policy_name: z.string().optional(), action: z.enum(["allow", "block", "require_approval", "redact"]).optional(), reason: z.string().optional()});

export const retryContext = z.object({gate_count: z.number().int().gte(1), completion_count: z.number().int().gte(0), prior_completion_status: z.enum(["none", "completed", "gated_not_completed"]), prior_output_available: z.boolean(), prior_output: z.record(z.string(), z.unknown()).nullable(), prior_completion_at: z.string().nullable(), first_attempt_at: z.string(), last_attempt_at: z.string(), last_decision: z.enum(["allow", "block", "require_approval"]), idempotency_key: z.string()});

export const approvalResponse = z.object({workflow_id: z.string().optional(), plan_id: z.string().optional(), step_id: z.string().optional(), status: z.enum(["pending", "approved", "rejected", "expired"]).optional(), decision: z.enum(["allow", "block", "require_approval"]).optional(), reason: z.string().optional(), approval_status: z.enum(["pending", "approved", "rejected", "expired"]).optional(), approval_id: z.string().optional(), approved_by: z.string().optional(), approved_at: z.string().optional(), rejected_by: z.string().optional(), rejected_at: z.string().optional(), policies_matched: z.array(policyMatch).optional(), retry_context: retryContext.optional(), message: z.string().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
};

/**
 * Approve a MAP plan step (HITL parity with WCP)
 * 
 * POST /api/v1/plans/{planId}/steps/{stepId}/approve
 */
export const createApiApiV1PlansPlanIdStepsStepIdApprove = async (args: CreateApiApiV1PlansPlanIdStepsStepIdApproveArgs, options?: CreateApiApiV1PlansPlanIdStepsStepIdApproveOptions) => {
const {baseUrl = "https://orchestrator.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")

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/plans/${encodeURIComponent(String(args.planId))}/steps/${encodeURIComponent(String(args.stepId))}/approve${query.size > 0 ? `?${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(approvalResponse, await res.json())
};