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Install

npm install codegate-sdk
Or install from local build (e.g. for development): 
cd sdk/javascript
npm install
npm run build
npm pack
npm install ./codegate-sdk-*.tgz

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Requirements

  • Node.js >= 18 (native fetch, crypto)
  • TypeScript >= 4.5 (optional)

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Quick start

import { CodeGateClient } from 'codegate-sdk';

const client = new CodeGateClient({
  apiKey: '550e8400e29b41d4a716446655440000',
  secret: 'a1b2c3d4e5f6...',
  projectId: '550e8400e29b41d4a716446655440000',
  baseUrl: 'https://api.example.com',
});

// Get project info
const project = await client.getProject();
console.log(project.name, project.statistics.total_codes);

// Verify code
const result = await client.verifyCode({ code: 'ABC12345', verifiedBy: 'user123' });
if (result.success) console.log('Verified at:', result.verified_at);

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API overview

MethodDescription
getProject()Get project info
listCodes(options?)List codes (page, pageSize, status, search)
getCode(codeId)Get one code by ID
getCodeByCode(code)Get one code by code string
verifyCode({ code, verifiedBy? })Verify (redeem) a code
reactivateCode({ code, reactivatedBy?, reason? })Reactivate a used code
getStatistics()Project statistics
Options use camelCase (e.g. pageSize, verifiedBy); the client converts to API snake_case.

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Usage details

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Pagination and filters

// Unused only, search by keyword
const { items, total, totalPages } = await client.listCodes({
  page: 1,
  pageSize: 50,
  status: 'unused',
  search: 'PROMO2024',
});

// Iterate all unused codes
for (let p = 1; p <= totalPages; p++) {
  const { items } = await client.listCodes({ page: p, pageSize: 100, status: 'unused' });
  for (const c of items) console.log(c.code);
}

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Verify result and error_code

Aside from 4xx/5xx (which throw CodeGateApiError), verify uses success and error_code: 
const result = await client.verifyCode({ code: 'ABC12345', verifiedBy: 'user123' });
if (result.success) {
  console.log('Verified', result.verified_at);
} else {
  // e.g. CODE_ALREADY_USED, CODE_NOT_FOUND, CODE_DISABLED, CODE_EXPIRED
  console.log(result.error_code, result.message);
}

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Error handling

4xx/5xx throw CodeGateApiError with status and detail: 
import { CodeGateClient, CodeGateApiError } from 'codegate-sdk';

try {
  await client.verifyCode({ code: 'X' });
} catch (e) {
  if (e instanceof CodeGateApiError) {
    if (e.status === 401) console.log('Auth failed');
    else if (e.status === 429) console.log('Rate limited');
  }
}

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Retry and resilience

Retry a limited number of times on 5xx or network errors: 
async function withRetry<T>(fn: () => Promise<T>, max = 3): Promise<T> {
  for (let i = 0; i < max; i++) {
    try {
      return await fn();
    } catch (e: any) {
      const ok = e?.status >= 500 || e?.code === 'ECONNRESET';
      if (i === max - 1 || !ok) throw e;
      await new Promise((r) => setTimeout(r, 1000 * (i + 1)));
    }
  }
  throw new Error('Unreachable');
}

const result = await withRetry(() => client.verifyCode({ code: 'ABC12345' }));

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Custom requests and generateSignature

For your own HTTP client, use generateSignature: 
import { generateSignature } from 'codegate-sdk';

const method = 'GET';
const path = `/api/v1/projects/${projectId}/codes`;
const queryParams = { page: '1', page_size: '20', status: 'unused' };
const timestamp = Math.floor(Date.now() / 1000);
const sig = generateSignature(method, path, queryParams, undefined, timestamp, secret);
// Set X-Signature, X-API-Key, X-Timestamp in headers

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Environment variables

Use env vars for credentials in different environments: 
const client = new CodeGateClient({
  apiKey: process.env.CODEGATE_API_KEY!,
  secret: process.env.CODEGATE_SECRET!,
  projectId: process.env.CODEGATE_PROJECT_ID!,
  baseUrl: process.env.CODEGATE_BASE_URL || 'https://api.example.com',
});

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Development

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Build

cd sdk/javascript
npm install
npm run build
Output in dist/: index.js (ESM), index.cjs, index.d.ts.

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Tests

npm run test

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Examples

npx tsx examples/basic_usage.ts
npx tsx examples/error_handling.ts
Set CODEGATE_API_KEY, CODEGATE_SECRET, CODEGATE_PROJECT_ID, CODEGATE_BASE_URL (optional).