import {z} from 'zod'

export type GetApiDownloadsIdArgs = {id: string};

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

export const downloadFileItem = z.object({fileId: z.string(), fileName: z.string(), fullPath: z.string(), downloaded: z.number(), size: z.number().optional()});

export const downloadItemStatus = z.union([z.object({type: z.literal("enqueued")}), z.object({type: z.literal("resolving")}), z.object({type: z.literal("active")}), z.object({type: z.literal("paused")}), z.object({type: z.literal("completed")}), z.object({type: z.literal("failed"), code: z.string(), message: z.string()})]);

export const downloadAssetItemIdentity = z.object({type: z.literal("asset"), id: z.string(), formatId: z.string().optional(), outputPath: z.string().optional()});

export const downloadAssetFileSetItemIdentitySchema = z.object({type: z.literal("fileSet"), id: z.string(), assetId: z.string()});

export const downloadAssetVersionItemIdentity = z.object({type: z.literal("assetVersion"), versionId: z.string(), assetId: z.string(), formatId: z.string().optional()});

export const downloadAssetFileItemIdentity = z.object({type: z.literal("assetFile"), assetId: z.string(), id: z.string(), outputPath: z.string().optional()});

export const downloadItemIdentity = z.union([downloadAssetItemIdentity, downloadAssetFileSetItemIdentitySchema, downloadAssetVersionItemIdentity, downloadAssetFileItemIdentity]);

export const downloadItem = z.object({id: z.string(), requestItemId: z.string(), files: z.array(downloadFileItem), status: downloadItemStatus, objectIdentity: downloadItemIdentity});

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
};

/**
 * Get a download by id
 * 
 * GET /downloads/{id}
 */
export const getApiDownloadsId = async (args: GetApiDownloadsIdArgs, options?: GetApiDownloadsIdOptions) => {
const {baseUrl = "http://localhost:6286", fetch: fetchFn = fetch} = options ?? {}

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

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