import {z} from 'zod'

export type GetApiPagesIdArgs = {id: string, 'expand[]'?: (Array<'head_code' | 'footer_code' | 'custom_css' | 'markup'>) | undefined};

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

export const pageAttributes = z.object({id: z.number().int().optional(), public_id: z.string().optional(), workspace_id: z.number().int().optional(), name: z.string().optional(), description: z.string().nullable().optional(), theme_id: z.number().int().nullable().optional(), created_at: z.string().optional(), seo_title: z.string().nullable().optional(), seo_description: z.string().nullable().optional(), seo_index: z.boolean().optional(), block_ai_crawler: z.boolean().optional(), block_ai_search: z.boolean().optional(), block_ai_assistant: z.boolean().optional(), updated_at: z.string().optional(), type: z.enum(["landing_page", "site_page", "funnel_page", "theme_page", "null"]).nullable().optional(), custom_html_page: z.boolean().optional(), current_path: z.string().nullable().optional(), url: z.string().nullable().optional(), show_page_step: z.object({id: z.number().int().optional(), public_id: z.string().optional(), name: z.string().optional(), current_path: z.string().nullable().optional(), sort_order: z.number().int().optional(), products: z.array(z.object({id: z.number().int().optional(), public_id: z.string().optional(), name: z.string().optional(), bump: z.boolean().optional(), bump_preheadline: z.string().nullable().optional()})).optional()}).nullable().optional(), funnel: z.object({id: z.number().int().optional(), public_id: z.string().optional(), name: z.string().optional()}).nullable().optional(), sdk: z.object({token: z.string().optional(), external_url: z.string().optional()}).nullable().optional(), head_code: z.string().nullable().optional(), footer_code: z.string().nullable().optional(), custom_css: z.string().nullable().optional(), markup: 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
};

/**
 * Fetch Page
 * 
 * GET /pages/{id}
 * 
 * Also accepts auth: OAuth2
 */
export const getApiPagesId = async (args: GetApiPagesIdArgs, options?: GetApiPagesIdOptions) => {
const {baseUrl = "https://myworkspace.myclickfunnels.com/api/v2", fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

for (const item of args['expand[]'] ?? []) query.append("expand[]", String(item))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/pages/${encodeURIComponent(String(args.id))}${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(pageAttributes, await res.json())
};