import {z} from 'zod'

export type V4AutomationData = {type?: (string | null) | undefined, platform?: ('iOS' | 'Android' | 'null' | null) | undefined, initiators: Array<{uid: string, type: 'event'}>, actions: {push?: (string | null) | undefined, screen?: (string | null) | undefined}, segments: string | null};

export type V4AutomationCreate = {name: string, caption?: string | undefined, status: 'active' | 'inactive' | 'paused', data: V4AutomationData};

export type CreateApiAutomationsArgs = {body: V4AutomationCreate};

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

export const v4AutomationData = z.object({type: z.string().nullable().optional(), platform: z.enum(["iOS", "Android", "null"]).nullable().optional(), initiators: z.array(z.object({uid: z.string(), type: z.literal("event")})), actions: z.object({push: z.string().nullable().optional(), screen: z.string().nullable().optional()}), segments: z.string().nullable()});

export const v4Automation = z.object({object: z.literal("automation"), id: z.string(), url: z.string(), name: z.string(), caption: z.string(), status: z.string(), data: v4AutomationData});

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 an automation
 * 
 * POST /automations
 */
export const createApiAutomations = async (args: CreateApiAutomationsArgs, options?: CreateApiAutomationsOptions) => {
const {baseUrl = "https://api.qonversion.io/v4", fetch: fetchFn = fetch, secretAuth} = options ?? {}

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

if (secretAuth !== undefined) headers.set('authorization', `Bearer ${secretAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/automations${query.size > 0 ? `?${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(v4Automation, await res.json())
};