import {z} from 'zod'

export type WorkflowEdgeInput = {condition?: string | undefined, id: string, label?: string | undefined, source: string, sourceHandle?: string | undefined, target: string};

export type PositionInput = {x?: number | undefined, y?: number | undefined};

export type WorkflowNodeInput = {data?: {[key: string]: Record<string, never>} | undefined, id: string, name?: string | undefined, position: PositionInput, type: 'trigger' | 'executor' | 'conditional' | 'action'};

export type CreateWorkflowInput = {description?: string | undefined, edges?: Array<WorkflowEdgeInput> | undefined, metadata?: {[key: string]: Record<string, never>} | undefined, name: string, nodes?: Array<WorkflowNodeInput> | undefined};

export type CreateApiV1WorkflowsArgs = {body: CreateWorkflowInput};

export type CreateApiV1WorkflowsOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const workflowCreateOutput = z.object({createdAt: z.string().optional(), status: z.string().optional(), version: z.string().optional(), workflowId: 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
};

/**
 * Create a Workflow
 * 
 * POST /v1/workflows
 */
export const createApiV1Workflows = async (args: CreateApiV1WorkflowsArgs, options?: CreateApiV1WorkflowsOptions) => {
const {baseUrl = "https://identity.sandbox.lerian.net", 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 = `${baseUrl.replace(/\/+$/, '')}/v1/workflows${query.size > 0 ? `?${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(workflowCreateOutput, await res.json())
};