import {z} from 'zod'

export type GetApiComponentsV1BadgeExternalIdOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const emblemBadgeResponse = z.object({id: z.string().optional(), name: z.string().optional(), publisherBadgeId: z.string().optional(), type: z.literal("emblem").optional(), badgeImageUrl: z.string().optional()});

export const ribbonBadgeResponse = z.object({id: z.string().optional(), name: z.string().optional(), publisherBadgeId: z.string().optional(), type: z.literal("ribbon").optional(), badgeImageUrl: z.string().optional(), text: z.string().optional(), backgroundColor: z.object({colorOne: z.string().optional(), colorTwo: z.string().optional(), gradientDirection: z.enum(["to top", "to bottom", "to left", "to right", "to top left", "to top right", "to bottom left", "to bottom right"]).optional()}).optional(), textColor: z.object({colorOne: z.string().optional()}).optional()});

export const badgeReadResponse = z.discriminatedUnion("type", [emblemBadgeResponse, ribbonBadgeResponse]);

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
};

/**
 * Retrieves a specific badge.
 * 
 * GET /components/v1/badge/{externalId}
 */
export const getApiComponentsV1BadgeExternalId = async (options: GetApiComponentsV1BadgeExternalIdOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/components/v1/badge/${encodeURIComponent(String(args.externalId))}${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(badgeReadResponse, await res.json())
};