import {z} from 'zod'

export type AutomationDelayStep = {action: 'delay', duration?: (string | null) | undefined, until?: (string | null) | undefined};

export type AutomationSendStep = {action: 'send', template?: (string | null) | undefined, brand?: (string | null) | undefined, data?: ({[key: string]: unknown} | null) | undefined, profile?: ({[key: string]: unknown} | null) | undefined, recipient?: (string | null) | undefined};

export type AutomationSendListStep = {action: 'send-list', list: string, data?: ({[key: string]: unknown} | null) | undefined, brand?: (string | null) | undefined};

export type AutomationUpdateProfileStep = {action: 'update-profile', recipient_id?: (string | null) | undefined, merge?: ('none' | 'overwrite' | 'soft-merge' | 'replace' | null) | undefined, profile: {[key: string]: unknown}};

export type AutomationCancelStep = {action: 'cancel', cancelation_token: string};

export type AutomationWebhookParams = {url: string, method: 'GET' | 'POST' | 'PUT' | 'PATCH' | 'DELETE', headers?: ({[key: string]: string} | null) | undefined, body?: (string | null) | undefined};

export type AutomationFetchDataStep = {action: 'fetch-data', webhook: AutomationWebhookParams, merge_strategy?: ('replace' | 'overwrite' | 'soft-merge' | null) | undefined};

export type AutomationInvokeStep = {action: 'invoke', template: string};

export type AutomationStep = AutomationDelayStep | AutomationSendStep | AutomationSendListStep | AutomationUpdateProfileStep | AutomationCancelStep | AutomationFetchDataStep | AutomationInvokeStep;

export type Automation = {cancelation_token?: (string | null) | undefined, steps: Array<AutomationStep>};

export type AutomationAdHocInvokeParams = {automation: Automation, brand?: (string | null) | undefined, data?: ({[key: string]: unknown} | null) | undefined, profile?: ({[key: string]: unknown} | null) | undefined, recipient?: (string | null) | undefined, template?: (string | null) | undefined};

export type CreateApiAutomationsInvokeArgs = {'Idempotency-Key'?: string | undefined, 'x-idempotency-expiration'?: string | undefined, body: AutomationAdHocInvokeParams};

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

export const automationInvokeResponse = z.object({runId: z.string()});

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
};

/**
 * Invoke an Ad Hoc Automation
 * 
 * POST /automations/invoke
 */
export const createApiAutomationsInvoke = async (args: CreateApiAutomationsInvokeArgs, options?: CreateApiAutomationsInvokeOptions) => {
const {baseUrl = "https://api.courier.com", fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (args['Idempotency-Key'] != null) headers.set("Idempotency-Key", String(args['Idempotency-Key']))
if (args['x-idempotency-expiration'] != null) headers.set("x-idempotency-expiration", String(args['x-idempotency-expiration']))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

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