import {z} from 'zod'

export type FieldOptions = '0' | '1' | '2' | '5';

export type DirectionOptions = '0' | '1' | '2';

export type GetApiMmmPoolsArgs = {collectionSymbol?: string | undefined, pools?: Array<string> | undefined, owner?: string | undefined, offset?: number | undefined, limit?: number | undefined, field?: FieldOptions | undefined, direction?: DirectionOptions | undefined};

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

export const iAttributeV2 = z.object({trait_type: z.string(), value: z.unknown()});

export const mMMCurveKindString = z.enum(["linear", "exp", "xyk"]);

export const mMMPoolTypeString = z.enum(["buy_sided", "sell_sided", "two_sided", "invalid"]);

export const iSharedEscrowInfo = z.object({sharedEscrowAddress: z.string(), sharedEscrowCount: z.number(), sharedEscrowBuysidePaymentAmount: z.number()});

export const iMmmPoolV2Response = z.object({results: z.array(z.object({collectionName: z.string(), attributes: z.array(z.array(iAttributeV2)).optional(), expiry: z.number(), collectionSymbol: z.string(), spotPrice: z.number(), curveType: mMMCurveKindString, curveDelta: z.number(), reinvestFulfillBuy: z.boolean(), reinvestFulfillSell: z.boolean(), lpFeeBp: z.number(), buysideCreatorRoyaltyBp: z.number(), poolOwner: z.string(), sellsideAssetAmount: z.number(), buysidePaymentAmount: z.number(), buyOrdersAmount: z.number(), poolType: mMMPoolTypeString, uuid: z.string(), poolKey: z.string(), cosigner: z.string(), blockedAt: z.string().optional(), mints: z.array(z.string()).optional(), collectionSellerFeeBasisPoints: z.number(), lpFeeEarned: z.number(), buyPriceTaker: z.number().optional(), isMIP1: z.boolean().optional(), isOCP: z.boolean().optional(), sharedEscrowInfo: iSharedEscrowInfo.optional(), updatedAt: z.string()}))});

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 AMM pools corresponding to an owner or collection symbol. At least one of required collectionSymbol or owner is required!
 * 
 * GET /mmm/pools
 */
export const getApiMmmPools = async (args: GetApiMmmPoolsArgs, options?: GetApiMmmPoolsOptions) => {
const {baseUrl = "https://api-mainnet.magiceden.dev/v2", fetch: fetchFn = fetch} = options ?? {}

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

if (args.collectionSymbol != null) query.append("collectionSymbol", String(args.collectionSymbol))
for (const item of args.pools ?? []) query.append("pools", String(item))
if (args.owner != null) query.append("owner", String(args.owner))
if (args.offset != null) query.append("offset", String(args.offset))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.field != null) query.append("field", String(args.field))
if (args.direction != null) query.append("direction", String(args.direction))

const url = `${baseUrl.replace(/\/+$/, '')}/mmm/pools${query.size > 0 ? `?${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(iMmmPoolV2Response, await res.json())
};