import {z} from 'zod'

export type FocalPointUpdateRequest = {data: {type: string, attributes: {x_coordinate: number, y_coordinate: number}}};

export type PatchApiDamFilesFileIdFocalPointArgs = {file_id: string, body: FocalPointUpdateRequest};

export type PatchApiDamFilesFileIdFocalPointOptions = {baseUrl: string, OAuth2?: string | undefined, fetch?: typeof fetch | undefined};

export const focalPointAttributes = z.object({x_coordinate: z.number().int().optional(), y_coordinate: z.number().int().optional(), created_at: z.string().optional(), updated_at: z.string().optional()});

export const focalPoint = z.object({id: z.string().optional(), type: z.string().optional(), attributes: focalPointAttributes.optional()});

export const focalPointResponse = z.object({data: focalPoint.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
};

/**
 * Set a DAM file's focal point
 * 
 * PATCH /dam/files/{file_id}/focal-point
 */
export const patchApiDamFilesFileIdFocalPoint = async (args: PatchApiDamFilesFileIdFocalPointArgs, options: PatchApiDamFilesFileIdFocalPointOptions) => {
const {baseUrl, fetch: fetchFn = fetch, OAuth2} = options ?? {}

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

if (OAuth2 !== undefined) headers.set('authorization', `Bearer ${OAuth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/dam/files/${encodeURIComponent(String(args.file_id))}/focal-point${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(focalPointResponse, await res.json())
};