import {z} from 'zod'

export type Currency = string;

export type Money = {amount?: number | undefined, currency?: Currency | undefined};

export type CountryCode = unknown;

export type CardholderVerificationType = 'WALLET' | 'PIN' | 'BIO' | 'THREE_DS';

export type CardEntryMode = 'MANUAL_ENTRY' | 'MAGNETIC_STRIPE_READ' | 'CHIP_READ' | 'CONTACTLESS' | 'ELECTRONIC_COMMERCE';

export type TransactionType = 'RETAIL' | 'CASH' | 'ATM' | 'CREDIT' | 'UNIQUE' | 'P2P_CREDIT' | 'P2P_DEBIT' | 'BALANCE_INQUIRY' | 'CASH_DISBURSEMENT';

export type CardScheme = 'VISA' | 'MC';

export type MessageCategory = 'REQUEST' | 'ADJUSTMENT' | 'SCHEME_ADVICE' | 'REVERSAL_ADVICE';

export type TestEvaluationV1Request = {cardId: unknown, merchantCategoryCode: string, settlementAmount: Money, merchantCountryCode?: CountryCode | undefined, merchantId?: string | undefined, acquirerId?: string | undefined, subMerchantId?: string | undefined, cardholderVerifications?: Array<CardholderVerificationType> | undefined, cardEntryMode?: CardEntryMode | undefined, cardholderPresent?: boolean | undefined, transactionType: TransactionType, cardScheme?: CardScheme | undefined, messageCategory?: MessageCategory | undefined, transactionTimestamp?: string | undefined, transactionId?: unknown | undefined, terminalCategoryCode?: string | undefined};

export type CreateApiV1EvaluateTestArgs = {auditUser: string, body: TestEvaluationV1Request};

export type CreateApiV1EvaluateTestOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const spendControlDecision = z.enum(["DECLINE", "APPROVE_PARTIAL", "APPROVE"]);

export const currency = z.string();

export const money = z.object({amount: z.number().optional(), currency: currency.optional()});

export const id = z.string();

export const ruleSetOperatorType = z.enum(["ANY", "ALL"]);

export const entityType = z.enum(["CARD", "CARD_HIERARCHY_GROUP"]);

export const externalEntityReference = z.object({id: z.string(), type: entityType});

export const ruleType = z.enum(["DECLINE", "ALLOWED_MCC", "BLOCKED_MCC", "ALLOWED_MERCHANT_ID", "BLOCKED_MERCHANT_ID", "AMOUNT", "ALLOWED_MERCHANT_COUNTRY", "BLOCKED_MERCHANT_COUNTRY", "ALLOWED_CARD_ENTRY_MODES", "BLOCKED_CARD_ENTRY_MODES", "ALLOWED_CVM", "BLOCKED_CVM", "CARDHOLDER_PRESENT", "EXTERNAL_BALANCE_CHECK", "CUMULATIVE_AMOUNT_INDIVIDUAL_LIMITS", "CUMULATIVE_COUNT_INDIVIDUAL_LIMITS", "ENFUCE_INTERNAL_PSD2_PIN_COUNT_RULE", "ENFUCE_INTERNAL_PSD2_PIN_AMOUNT_RULE"]);

export const filterOperatorType = z.enum(["ANY", "ALL"]);

export const filterType = z.enum(["MCC", "AMOUNT", "MERCHANT_COUNTRY", "CARDHOLDER_VERIFICATION", "CARD_ENTRY_MODE", "CARDHOLDER_PRESENT", "ACQUIRER_ID", "TRANSACTION_TYPE"]);

export const filterResponseBody = z.object({id: id.optional(), type: filterType.optional(), reversed: z.boolean().optional()});

export const ruleResponseBody = z.object({id: id.optional(), ruleType: ruleType.optional(), name: z.string(), filterOperatorType: filterOperatorType, filters: z.array(filterResponseBody).optional()});

export const spendControlRuleEvaluation = z.object({ruleId: id.optional(), decision: spendControlDecision.optional(), partialApprovalAmount: money.optional(), settings: ruleResponseBody.optional()});

export const spendControlRuleSetEvaluationDetails = z.object({ruleSetId: id.optional(), operator: ruleSetOperatorType.optional(), decision: spendControlDecision.optional(), entityReferences: z.array(externalEntityReference).optional(), partialApprovalAmount: money.optional(), ruleEvaluations: z.array(spendControlRuleEvaluation).optional()});

export const testEvaluationV1Response = z.object({decision: spendControlDecision.optional(), partialApprovalAmount: money.optional(), responseCode: z.string().optional(), details: z.array(spendControlRuleSetEvaluationDetails).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
};

/**
 * Test Spend Control Rules Evaluation
 * 
 * POST /v1/evaluate/test
 */
export const createApiV1EvaluateTest = async (args: CreateApiV1EvaluateTestArgs, options: CreateApiV1EvaluateTestOptions) => {
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.auditUser != null) query.append("auditUser", String(args.auditUser))

const url = `${baseUrl.replace(/\/+$/, '')}/v1/evaluate/test${query.size > 0 ? `?${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(testEvaluationV1Response, await res.json())
};