import {z} from 'zod'

export type WorkflowStep = {name: string, type: 'mcp_query' | 'llm' | 'api_call' | 'transform', connector?: string | undefined, query?: string | undefined, prompt?: string | undefined, dependencies?: Array<string> | undefined};

export type Workflow = {metadata: {name: string, description?: string | undefined}, spec: {steps: Array<WorkflowStep>}};

export type UserContext = {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 WorkflowExecuteRequest = {workflow: Workflow, input?: {[key: string]: unknown} | undefined, user?: UserContext | undefined};

export type CreateApiApiV1WorkflowsExecuteArgs = {body: WorkflowExecuteRequest};

export type CreateApiApiV1WorkflowsExecuteOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const userContext = z.object({id: z.number().int().optional(), email: z.string().optional(), role: z.string().optional(), region: z.string().optional(), permissions: z.array(z.string()).optional(), tenant_id: z.string().optional(), org_id: z.string().optional()});

export const workflowExecution = z.object({id: z.string().optional(), workflow_name: z.string().optional(), status: z.enum(["pending", "running", "completed", "failed"]).optional(), input: z.record(z.string(), z.unknown()).optional(), start_time: z.string().optional(), end_time: z.string().optional(), user_context: userContext.optional(), error: z.string().optional(), steps: z.array(z.object({name: z.string().optional(), status: z.enum(["pending", "running", "completed", "failed", "skipped"]).optional(), input: z.record(z.string(), z.unknown()).optional(), output: z.record(z.string(), z.unknown()).optional(), start_time: z.string().optional(), end_time: z.string().optional(), error: z.string().optional(), process_time: z.string().optional()})).optional(), output: z.record(z.string(), z.unknown()).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
};

/**
 * Execute a workflow
 * 
 * POST /api/v1/workflows/execute
 */
export const createApiApiV1WorkflowsExecute = async (args: CreateApiApiV1WorkflowsExecuteArgs, options?: CreateApiApiV1WorkflowsExecuteOptions) => {
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/workflows/execute${query.size > 0 ? `?${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(workflowExecution, await res.json())
};