# pay2inr Database & Loading Issues - Fix Summary

## Issues Found & Fixed

### 1. ✅ Page Loading Issue (FIXED)
**Problem:** The 2FA page and index.php were hanging/loading indefinitely
**Cause:** `file_get_contents()` on line 15 of `partner/index.php` was timing out when calling external API (smartupi.in.net)
**Solution:** Replaced with cURL that has 3-second timeout and proper error handling

**File Modified:** `partner/index.php`
- Added timeout (3 seconds)
- Added connection timeout (2 seconds)  
- Added graceful error handling
- Page now loads even if external API is down

---

### 2. ✅ Missing Database Table (FIXED)
**Problem:** `SQLSTATE[42S02]: Base table or view not found: 1146 Table 'pay2inrsql.callback_logs' doesn't exist`
**Cause:** The `callback_logs` table was never created in the database
**Solution:** Created SQL migration file

**File Created:** `database/create_callback_logs.sql`

**Run this SQL on your server:**
```sql
CREATE TABLE IF NOT EXISTS `callback_logs` (
  `id` INT(11) NOT NULL AUTO_INCREMENT,
  `order_id` VARCHAR(100) NOT NULL,
  `user_name` VARCHAR(100) DEFAULT NULL,
  `callback_url` TEXT DEFAULT NULL,
  `amount` DECIMAL(12,2) DEFAULT 0.00,
  `txn_status` VARCHAR(50) DEFAULT NULL,
  `utr_number` VARCHAR(100) DEFAULT NULL,
  `api_txn_id` VARCHAR(100) DEFAULT NULL,
  `received_from` VARCHAR(50) DEFAULT NULL,
  `sent_data` TEXT DEFAULT NULL,
  `response` TEXT DEFAULT NULL,
  `http_code` INT(11) DEFAULT 0,
  `status` VARCHAR(20) DEFAULT NULL,
  `error_message` TEXT DEFAULT NULL,
  `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`),
  KEY `idx_order_id` (`order_id`),
  KEY `idx_user_name` (`user_name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
```

---

### 3. ✅ Missing Database Columns (FIXED)
**Problem:** 
- `Warning: Undefined array key "api_txn_id"` on line 90
- `Warning: Undefined array key "callback_sent"` on line 98

**Cause:** The `create_orders` table is missing these columns
**Solution:** Created SQL migration file

**File Created:** `database/add_missing_columns.sql`

**Run this SQL on your server:**
```sql
-- Add api_txn_id column
ALTER TABLE `create_orders` 
ADD COLUMN IF NOT EXISTS `api_txn_id` VARCHAR(100) DEFAULT NULL AFTER `transactions_id`;

-- Add callback_sent column
ALTER TABLE `create_orders` 
ADD COLUMN IF NOT EXISTS `callback_sent` TINYINT(1) DEFAULT 0 AFTER `utr_number`;

-- Add index for performance
ALTER TABLE `create_orders` 
ADD INDEX IF NOT EXISTS `idx_callback_sent` (`callback_sent`);
```

**File Modified:** `partner/get_transaction_details.php`
- Added null coalescing operators (`??`) to safely handle missing keys
- Prevents warnings even if columns don't exist yet

---

## How to Apply Fixes

### Step 1: Upload Modified Files
Upload these modified files to your server:
- ✅ `partner/index.php` (already modified locally)
- ✅ `partner/get_transaction_details.php` (already modified locally)

### Step 2: Run SQL Migrations
Log into phpMyAdmin or SSH and run:

**Option A: phpMyAdmin**
1. Select database `pay2inrsql`
2. Go to SQL tab
3. Copy and paste the SQL from both files:
   - `database/create_callback_logs.sql`
   - `database/add_missing_columns.sql`
4. Click "Go"

**Option B: SSH**
```bash
cd /home/fastpay.us.cc/public_html/database
mysql -u pay2inrsql -p pay2inrsql < create_callback_logs.sql
mysql -u pay2inrsql -p pay2inrsql < add_missing_columns.sql
```

---

## Expected Results After Fix

✅ **Pages load quickly** (no more hanging on external API timeout)
✅ **No more "table not found" errors** for callback_logs
✅ **No more "undefined array key" warnings** for api_txn_id and callback_sent
✅ **Transaction details page works** properly
✅ **2FA page loads** without delay

---

## Files Created/Modified

### Created:
1. `database/create_callback_logs.sql` - Creates callback_logs table
2. `database/add_missing_columns.sql` - Adds missing columns to create_orders
3. `database/FIX_SUMMARY.md` - This file

### Modified:
1. `partner/index.php` - Fixed timeout issue with cURL
2. `partner/get_transaction_details.php` - Added null coalescing for safety

---

## Technical Details

### Why the page was loading?
The `file_get_contents()` function has no timeout by default. When the external API (smartupi.in.net) was unreachable or slow, PHP would wait indefinitely (or until default_socket_timeout, usually 60 seconds), causing the page to hang.

### Why use cURL instead?
cURL allows precise control over:
- Connection timeout (2 seconds)
- Total execution timeout (3 seconds)
- Error handling
- SSL verification options

This ensures the page loads quickly even when external services are down.
