import {z} from 'zod'

export type EncodedSerializedTransaction = string;

export type SolanaFeeEstimateRequestParams = {fee_token: string, transaction: EncodedSerializedTransaction};

export type AssetSpec = {type: 'native'} | {code: string, issuer: string, type: 'credit4'} | {code: string, issuer: string, type: 'credit12'};

export type AuthSpec = {type: 'none'} | {type: 'source_account'} | {signers: Array<string>, type: 'addresses'} | {entries: Array<string>, type: 'xdr'};

export type ContractSource = {address: string, from: 'address'} | {contract: string, from: 'contract'};

export type WasmSource = {hex: string} | {base64: string};

export type OperationSpec = {amount: string, asset: AssetSpec, destination: string, type: 'payment'} | {args: Array<unknown>, auth?: (AuthSpec | null) | undefined, contract_address: string, function_name: string, type: 'invoke_contract'} | {auth?: (AuthSpec | null) | undefined, constructor_args?: (Array<unknown> | null) | undefined, salt?: (string | null) | undefined, source: ContractSource, type: 'create_contract', wasm_hash: string} | {auth?: (AuthSpec | null) | undefined, type: 'upload_wasm', wasm: WasmSource};

export type StellarFeeEstimateRequestParams = {fee_token: string, operations?: (Array<OperationSpec> | null) | undefined, source_account?: (string | null) | undefined, transaction_xdr?: (string | null) | undefined};

export type SponsoredTransactionQuoteRequest = SolanaFeeEstimateRequestParams | StellarFeeEstimateRequestParams;

export type CreateApiApiV1RelayersRelayerIdTransactionsSponsoredQuoteArgs = {relayer_id: string, body: SponsoredTransactionQuoteRequest};

export type CreateApiApiV1RelayersRelayerIdTransactionsSponsoredQuoteOptions = {baseUrl: string, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const solanaFeeEstimateResult = z.object({conversion_rate: z.string(), estimated_fee: z.string()});

export const stellarFeeEstimateResult = z.object({conversion_rate: z.string(), fee_in_token: z.string(), fee_in_token_ui: z.string(), max_fee_in_token: z.string().nullable().optional(), max_fee_in_token_ui: z.string().nullable().optional()});

export const logLevel = z.enum(["log", "info", "error", "warn", "debug", "result"]);

export const logEntry = z.object({level: logLevel, message: z.string()});

export const pluginMetadata = z.object({logs: z.array(logEntry).nullable().optional(), traces: z.array(z.unknown()).nullable().optional()});

export const paginationMeta = z.object({current_page: z.number().int().gte(0), per_page: z.number().int().gte(0), total_items: z.number().int().gte(0)});

export const apiResponseSponsoredTransactionQuoteResponse = z.object({data: z.union([solanaFeeEstimateResult, stellarFeeEstimateResult]).optional(), error: z.string().optional(), metadata: pluginMetadata.optional(), pagination: paginationMeta.optional(), success: z.boolean()});

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
};

/**
 * Estimates fees for a sponsored (gasless) transaction.
 * 
 * POST /api/v1/relayers/{relayer_id}/transactions/sponsored/quote
 */
export const createApiApiV1RelayersRelayerIdTransactionsSponsoredQuote = async (args: CreateApiApiV1RelayersRelayerIdTransactionsSponsoredQuoteArgs, options: CreateApiApiV1RelayersRelayerIdTransactionsSponsoredQuoteOptions) => {
const {baseUrl, fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/relayers/${encodeURIComponent(String(args.relayer_id))}/transactions/sponsored/quote${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(apiResponseSponsoredTransactionQuoteResponse, await res.json())
};