import {z} from 'zod'

export type EmptyString = string;

export type AddressHashNullable = string | null;

export type FloatString = string;

export type NullString = string;

export type IntegerString = string;

export type GetApiChainIdApiV2TokensArgs = {type?: (EmptyString | string) | undefined, q?: (string | null) | undefined, limit?: (number | null) | undefined, sort?: ('fiat_value' | 'holders_count' | 'circulating_market_cap') | undefined, order?: ('asc' | 'desc') | undefined, items_count?: number | undefined, contract_address_hash?: AddressHashNullable | undefined, fiat_value?: (FloatString | EmptyString | NullString) | undefined, holders_count?: (IntegerString | EmptyString | NullString) | undefined, is_name_null?: boolean | undefined, market_cap?: (FloatString | EmptyString | NullString) | undefined, name?: string | undefined, chain_id: string};

export type GetApiChainIdApiV2TokensOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const addressHash = z.string();

export const floatStringNullable = z.string().nullable();

export const integerStringNullable = z.string().nullable();

export const uRLNullable = z.string().nullable();

export const tokenType = z.enum(["ERC-20", "ERC-721", "ERC-1155", "ERC-404", "ERC-7984"]);

export const token = z.object({address_hash: addressHash, bridge_type: z.enum(["omni", "amb"]).nullable().optional(), circulating_market_cap: floatStringNullable, circulating_supply: floatStringNullable, decimals: integerStringNullable, exchange_rate: floatStringNullable, foreign_address: z.string().nullable().optional(), holders_count: integerStringNullable, icon_url: uRLNullable, name: z.string().nullable(), origin_chain_id: integerStringNullable.optional(), reputation: z.enum(["ok", "scam"]).nullable(), symbol: z.string().nullable(), total_supply: integerStringNullable, type: tokenType.nullable(), volume_24h: floatStringNullable});

export const getApiChainIdApiV2TokensResponse = z.object({items: z.array(token), next_page_params: z.record(z.string(), z.unknown()).nullable()});

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
};

/**
 * List tokens with optional filtering by name, symbol, or type
 * 
 * GET /{chain_id}/api/v2/tokens/
 * 
 * Also accepts auth: apiKeyAuth
 */
export const getApiChainIdApiV2Tokens = async (args: GetApiChainIdApiV2TokensArgs, options?: GetApiChainIdApiV2TokensOptions) => {
const {baseUrl = "https://api.blockscout.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.type != null) query.append("type", String(args.type))
if (args.q != null) query.append("q", String(args.q))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.sort != null) query.append("sort", String(args.sort))
if (args.order != null) query.append("order", String(args.order))
if (args.items_count != null) query.append("items_count", String(args.items_count))
if (args.contract_address_hash != null) query.append("contract_address_hash", String(args.contract_address_hash))
if (args.fiat_value != null) query.append("fiat_value", String(args.fiat_value))
if (args.holders_count != null) query.append("holders_count", String(args.holders_count))
if (args.is_name_null != null) query.append("is_name_null", String(args.is_name_null))
if (args.market_cap != null) query.append("market_cap", String(args.market_cap))
if (args.name != null) query.append("name", String(args.name))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/${encodeURIComponent(String(args.chain_id))}/api/v2/tokens/${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(getApiChainIdApiV2TokensResponse, await res.json())
};