import {z} from 'zod'

export type CreateApiArgs = {body: {jsonrpc: '2.0', id: string, method: 'simulateTransaction', params: Array<string | {encoding?: ('base58' | 'base64') | undefined, skipPreflight?: boolean | undefined, preflightCommitment?: ('confirmed' | 'finalized' | 'processed') | undefined, sigVerify?: boolean | undefined, replaceRecentBlockhash?: boolean | undefined, minContextSlot?: number | undefined, innerInstructions?: boolean | undefined, accounts?: ({addresses?: Array<string> | undefined, encoding?: ('base64' | 'base58' | 'base64+zstd' | 'jsonParsed') | undefined}) | undefined}>}};

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

export const createApiResponse = z.object({jsonrpc: z.literal("2.0").optional(), id: z.string().optional(), result: z.object({context: z.object({apiVersion: z.string().optional(), slot: z.number().int().optional()}).optional(), value: z.object({accounts: z.array(z.object({})).nullable().optional(), err: z.object({}).nullable().optional(), innerInstructions: z.array(z.unknown()).nullable().optional(), loadedAccountsDataSize: z.number().int().nullable().optional(), logs: z.array(z.string()).nullable().optional(), replacementBlockhash: z.object({blockhash: z.string().optional(), lastValidBlockHeight: z.number().int().optional()}).nullable().optional(), returnData: z.object({programId: z.string().optional(), data: z.array(z.string()).optional()}).nullable().optional(), unitsConsumed: z.number().int().nullable().optional()}).optional()}).optional()});

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
};

/**
 * simulateTransaction
 * 
 * POST /
 */
export const createApi = async (args: CreateApiArgs, options?: CreateApiOptions) => {
const {baseUrl = "https://data.solanatracker.io", fetch: fetchFn = fetch, ApiKeyQuery} = options ?? {}

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

if (ApiKeyQuery !== undefined) query.set("api_key", ApiKeyQuery)

const url = `${baseUrl.replace(/\/+$/, '')}/${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(createApiResponse, await res.json())
};