import {z} from 'zod'

export type GetApiV2TradePositionArgs = {token0: string, token1: string, fee: number, owner: string, tickLower: number, tickUpper: number};

export type GetApiV2TradePositionOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const singlePositionResponseDataDto = z.object({fee: z.number(), token0CompositeKey: z.string().optional(), token1CompositeKey: z.string().optional(), token0Image: z.string(), token1Image: z.string(), pool: z.string(), token0Symbol: z.string(), token1Symbol: z.string(), tickLower: z.number(), tickUpper: z.number(), owner: z.string(), liquidity: z.string(), amount0: z.string(), amount1: z.string(), inRange: z.boolean(), currentTick: z.number().optional(), sqrtPrice: z.string().optional(), fees0: z.string().optional(), fees1: z.string().optional()});

export const positionResponseDto = z.object({status: z.number(), message: z.string(), error: z.boolean(), data: singlePositionResponseDataDto});

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
};

/**
 * One position incl. uncollected fees (escrow balance)
 * 
 * GET /v2/trade/position
 */
export const getApiV2TradePosition = async (args: GetApiV2TradePositionArgs, options?: GetApiV2TradePositionOptions) => {
const {baseUrl = "https://swap-backend.stage.defi.ovh.gala.com", fetch: fetchFn = fetch} = options ?? {}

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

if (args.token0 != null) query.append("token0", String(args.token0))
if (args.token1 != null) query.append("token1", String(args.token1))
if (args.fee != null) query.append("fee", String(args.fee))
if (args.owner != null) query.append("owner", String(args.owner))
if (args.tickLower != null) query.append("tickLower", String(args.tickLower))
if (args.tickUpper != null) query.append("tickUpper", String(args.tickUpper))

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