import {z} from 'zod'

export type PreviousOutpointLookupMode = 'no' | 'light' | 'full';

export type AcceptanceMode = 'accepted' | 'rejected';

export type TxSearchAcceptingBlueScores = {gte: number, lt: number};

export type TxSearch = {transactionIds?: Array<string> | undefined, acceptingBlueScores?: TxSearchAcceptingBlueScores | undefined};

export type CreateApiTransactionsSearchArgs = {fields?: string | undefined, resolve_previous_outpoints?: PreviousOutpointLookupMode | undefined, acceptance?: AcceptanceMode | undefined, body: TxSearch};

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

export const txOutput = z.object({transaction_id: z.string(), index: z.number().int(), amount: z.number().int(), script_public_key: z.string().optional(), script_public_key_address: z.string().optional(), script_public_key_type: z.string().optional(), covenant_authorizing_input: z.number().int().optional(), covenant_id: z.string().optional()});

export const txInput = z.object({transaction_id: z.string(), index: z.number().int(), previous_outpoint_hash: z.string(), previous_outpoint_index: z.string(), previous_outpoint_resolved: txOutput.optional(), previous_outpoint_address: z.string().optional(), previous_outpoint_amount: z.number().int().optional(), signature_script: z.string().optional(), sig_op_count: z.string().optional(), compute_budget: z.number().int().optional(), covenant_id: z.string().optional()});

export const txModel = z.object({subnetwork_id: z.string().optional(), transaction_id: z.string().optional(), hash: z.string().optional(), mass: z.string().optional(), payload: z.string().optional(), block_hash: z.array(z.string()).optional(), block_time: z.number().int().optional(), version: z.number().int().optional(), is_accepted: z.boolean().optional(), accepting_block_hash: z.string().optional(), accepting_block_blue_score: z.number().int().optional(), accepting_block_time: z.number().int().optional(), inputs: z.array(txInput).optional(), outputs: z.array(txOutput).optional()});

export const createApiTransactionsSearchResponse = z.array(txModel);

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
};

/**
 * Search For Transactions
 * 
 * POST /transactions/search
 */
export const createApiTransactionsSearch = async (args: CreateApiTransactionsSearchArgs, options: CreateApiTransactionsSearchOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.fields != null) query.append("fields", String(args.fields))
if (args.resolve_previous_outpoints != null) query.append("resolve_previous_outpoints", String(args.resolve_previous_outpoints))
if (args.acceptance != null) query.append("acceptance", String(args.acceptance))

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