name

zoho-api

description

Zoho Books and Zoho Inventory API integration for TSH Clients Console. Use when: (1) Creating new API routes that call Zoho endpoints (2) Debugging API errors, token issues, or rate limits (3) Adding new Zoho data fetching functions (4) Understanding OAuth token caching with Upstash Redis (5) Working with products, orders, invoices, payments, or credit notes (6) Troubleshooting "Contact for price" or stock display issues

Zoho API Integration

Quick Reference

API	Base URL
Zoho Inventory	`https://www.zohoapis.com/inventory/v1`
Zoho Books	`https://www.zohoapis.com/books/v3`

Organization ID: 748369814

Code Files

File	Purpose
`src/lib/zoho/client.ts`	OAuth client, token caching, `zohoFetch`
`src/lib/zoho/products.ts`	Products, stock extraction
`src/lib/zoho/price-lists.ts`	Price list constants and fetching
`src/lib/zoho/customers.ts`	Customer lookup by email
`src/lib/zoho/orders.ts`	Sales orders
`src/lib/zoho/invoices.ts`	Invoices
`src/lib/zoho/payments.ts`	Payments
`src/lib/zoho/credit-notes.ts`	Credit notes

Using zohoFetch

import { zohoFetch } from '@/lib/zoho/client';

// GET request
const data = await zohoFetch('/inventory/v1/items', {
  params: {
    organization_id: process.env.ZOHO_ORGANIZATION_ID,
    page: 1,
    per_page: 100,
  },
});

// Single item with locations
const item = await zohoFetch(`/inventory/v1/items/${itemId}`, {
  params: { organization_id: process.env.ZOHO_ORGANIZATION_ID },
});

Token Caching (CRITICAL)

Memory Cache → Upstash Redis → Zoho OAuth Refresh
              (50-min TTL)    (rate limit: 10s guard)

If all prices show "Contact for price", check:

Upstash env vars in Vercel
UPSTASH_REDIS_REST_URL and UPSTASH_REDIS_REST_TOKEN
Run: curl https://www.tsh.sale/api/debug/token

Common Endpoints

Inventory API

GET /items                      # List products
GET /items/{id}                 # Single product (includes locations)
GET /categories                 # List categories
GET /pricebooks/{id}            # Pricebook with items

Books API

GET /contacts                   # List customers
GET /salesorders                # Sales orders
GET /invoices                   # Invoices
GET /customerpayments           # Payments
GET /creditnotes                # Credit notes

Caching with unstable_cache

import { unstable_cache } from 'next/cache';

const getCachedProducts = unstable_cache(
  async () => await fetchProducts(),
  ['products'],
  { revalidate: 3600, tags: ['products'] }
);

Revalidate cache:

curl "https://www.tsh.sale/api/revalidate?tag=products&secret=tsh-revalidate-2024"

Error Handling Pattern

try {
  const data = await zohoFetch('/inventory/v1/items', { ... });
} catch (error) {
  if (error.message.includes('401')) {
    // Token expired - auto-refreshes
  } else if (error.message.includes('429')) {
    // Rate limited - wait and retry
  }
}

Creating New API Route

// src/app/api/zoho/[resource]/route.ts
import { NextResponse } from 'next/server';
import { zohoFetch } from '@/lib/zoho/client';

export async function GET(request: Request) {
  const data = await zohoFetch('/inventory/v1/items', {
    params: {
      organization_id: process.env.ZOHO_ORGANIZATION_ID,
    },
  });

  return NextResponse.json(data);
}

Rate Limits

API	Limit
OAuth Refresh	~100/minute
Inventory API	100/minute
Books API	100/minute

Debug Commands

# Check token
curl "https://www.tsh.sale/api/debug/token"

# Check prices
curl "https://www.tsh.sale/api/debug/prices"

# Check stock
curl "https://www.tsh.sale/api/debug/stock"

# Revalidate cache
curl "https://www.tsh.sale/api/revalidate?tag=all&secret=tsh-revalidate-2024"