import {z} from 'zod'

export type GetApiV2NftsCollectionsArgs = {limit?: number | undefined, offset?: number | undefined};

export type GetApiV2NftsCollectionsOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const nftApprovedBy = z.array(z.enum(["getgems", "tonkeeper"]));

export const nftCollectionMetadataStatus = z.object({is_broken: z.boolean().optional(), last_refresh_success: z.number().int().nullable().optional(), last_refresh_try: z.number().int().nullable().optional(), url: z.string().optional()});

export const accountAddress = z.object({address: z.string(), icon: z.string().optional(), is_scam: z.boolean(), is_wallet: z.boolean(), name: z.string().optional()});

export const imagePreview = z.object({resolution: z.string(), url: z.string()});

export const trustType = z.enum(["whitelist", "graylist", "blacklist", "none"]);

export const nftCollection = z.object({address: z.string(), approved_by: nftApprovedBy, metadata: z.record(z.string(), z.unknown()).optional(), metadata_status: nftCollectionMetadataStatus.optional(), next_item_index: z.number().int(), owner: accountAddress.optional(), previews: z.array(imagePreview).optional(), raw_collection_content: z.string(), trust: trustType});

export const nftCollections = z.object({nft_collections: z.array(nftCollection)});

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 NFT collections
 * 
 * GET /v2/nfts/collections
 */
export const getApiV2NftsCollections = async (args: GetApiV2NftsCollectionsArgs, options?: GetApiV2NftsCollectionsOptions) => {
const {baseUrl = "https://tonapi.io", fetch: fetchFn = fetch} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.offset != null) query.append("offset", String(args.offset))

const url = `${baseUrl.replace(/\/+$/, '')}/v2/nfts/collections${query.size > 0 ? `?${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(nftCollections, await res.json())
};