import {z} from 'zod'

export type GetApiWhatsappFlowsArgs = {status?: ('draft' | 'published') | undefined, business_account_id?: string | undefined, phone_number_id?: string | undefined, name_contains?: string | undefined, created_after?: string | undefined, created_before?: string | undefined, per_page?: number | undefined, page?: number | undefined};

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

export const whatsappFlow = z.object({id: z.string(), meta_flow_id: z.string(), name: z.string(), status: z.enum(["draft", "published"]), json_version: z.string().nullable().optional(), data_api_version: z.string().nullable().optional(), business_account_id: z.string().nullable().optional(), preview_url: z.string().nullable().optional(), published_at: z.string().nullable().optional(), last_synced_at: z.string().nullable().optional(), created_at: z.string(), updated_at: z.string(), data_endpoint_function_id: z.string().nullable().optional(), phone_number_id: z.string().nullable().optional(), data_endpoint_url: z.string().nullable().optional(), has_data_endpoint: z.boolean().optional(), flows_encryption_configured: z.boolean().optional()});

export const paginationMeta = z.object({page: z.number().int().gte(1), per_page: z.number().int().gte(1), total_pages: z.number().int().gte(0), total_count: z.number().int().gte(0)});

export const whatsappFlowListResponse = z.object({data: z.array(whatsappFlow), meta: paginationMeta});

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
};

/**
 * List flows
 * 
 * GET /whatsapp/flows
 */
export const getApiWhatsappFlows = async (args: GetApiWhatsappFlowsArgs, options?: GetApiWhatsappFlowsOptions) => {
const {baseUrl = "https://api.kapso.ai/platform/v1", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (args.status != null) query.append("status", String(args.status))
if (args.business_account_id != null) query.append("business_account_id", String(args.business_account_id))
if (args.phone_number_id != null) query.append("phone_number_id", String(args.phone_number_id))
if (args.name_contains != null) query.append("name_contains", String(args.name_contains))
if (args.created_after != null) query.append("created_after", String(args.created_after))
if (args.created_before != null) query.append("created_before", String(args.created_before))
if (args.per_page != null) query.append("per_page", String(args.per_page))
if (args.page != null) query.append("page", String(args.page))
if (ApiKeyAuth !== undefined) headers.set("X-API-Key", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/whatsapp/flows${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(whatsappFlowListResponse, await res.json())
};