import {z} from 'zod'

export type GetApiApiContentTemplatesTemplateIdOptions = {baseUrl?: string | undefined, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const emailTemplatesObject = z.object({html_body: z.string(), plaintext_body: z.string(), subject: z.string()});

export const smsTemplatesObject = z.object({alert: z.string()});

export const openChannelTemplatesObject = z.object({alert: z.string(), media_attachment: z.string().optional(), summary: z.string().optional(), title: z.string().optional()});

export const appAndWebTemplatesObject = z.object({alert: z.string(), icon: z.string().optional(), summary: z.string().optional(), title: z.string().optional()});

export const messageCenterTemplatesObject = z.object({html_body: z.string(), title: z.string().optional()});

export const feedReferences = z.object({defaults: z.record(z.string(), z.record(z.string(), z.union([z.string(), z.number()]))).optional(), feeds: z.array(z.object({name: z.string(), on_error: z.enum(["continue", "cancel"]).optional(), params: z.record(z.string(), z.union([z.string(), z.number()])).optional()}))});

export const snippetReferences = z.object({snippets: z.array(z.object({name: z.string()}))});

export const contentTemplateObject = z.object({content: z.union([emailTemplatesObject, smsTemplatesObject, openChannelTemplatesObject, appAndWebTemplatesObject, messageCenterTemplatesObject]), created_at: z.string().optional(), description: z.string().optional(), external_id: z.string().optional(), feed_references: feedReferences.optional(), id: z.string().optional(), modified_at: z.string().optional(), name: z.string(), snippet_references: snippetReferences.optional(), type: z.enum(["email", "sms", "open", "app", "web", "message_center"])});

export const getApiApiContentTemplatesTemplateIdResponse = z.object({content_template: contentTemplateObject.optional(), ok: z.boolean()});

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
};

/**
 * Look up a content template
 * 
 * GET /api/content/templates/{template_id}
 * 
 * Also accepts auth: oauth2Token
 */
export const getApiApiContentTemplatesTemplateId = async (options?: GetApiApiContentTemplatesTemplateIdOptions) => {
const {baseUrl = "https://go.urbanairship.com", fetch: fetchFn = fetch, basicAuth} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/vnd.urbanairship+json; version=3")

if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/content/templates/${encodeURIComponent(String(args.template_id))}${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(getApiApiContentTemplatesTemplateIdResponse, await res.json())
};