import {z} from 'zod'

export type PatchApiNewsletterSettingsArgs = {body: {postalAddress?: (string | null) | undefined, design?: ({accentColor?: (string | null) | undefined, font?: ('sans' | 'serif' | 'mono') | undefined, align?: ('left' | 'center') | undefined}) | undefined, cleanup?: ({enabled?: boolean | undefined, afterSends?: number | undefined, quietDays?: number | undefined, subject?: (string | null) | undefined, body?: (string | null) | undefined, from?: (string | null) | undefined}) | undefined, testRecipients?: Array<string> | undefined}};

export type PatchApiNewsletterSettingsOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const patchApiNewsletterSettingsResponse = z.object({postalAddress: z.string(), design: z.object({accentColor: z.string(), font: z.string(), align: z.string()}), cleanup: z.object({enabled: z.boolean(), afterSends: z.number().int(), quietDays: z.number().int(), subject: z.string(), body: z.string(), from: z.unknown()}), testRecipients: z.array(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
};

/**
 * Change newsletter settings
 * 
 * PATCH /newsletter-settings
 */
export const patchApiNewsletterSettings = async (args: PatchApiNewsletterSettingsArgs, options?: PatchApiNewsletterSettingsOptions) => {
const {baseUrl = "https://sendhq.cc/api/v1", 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 (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

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

const res = await fetchFn(url, {method: "PATCH", 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(patchApiNewsletterSettingsResponse, await res.json())
};