Fix user lifetime donation stat

includes/admin/payments/actions.php

@@ -148,18 +148,21 @@ function give_update_payment_details( $data ) {
 		$previous_customer->remove_payment( $payment_id, false );
 		$customer->attach_payment( $payment_id, false );
 
-		// If purchase was completed and not ever refunded, adjust stats of customers
-		if ( 'revoked' == $status || 'publish' == $status ) {
-
-			$previous_customer->decrease_purchase_count();
-			$previous_customer->decrease_value( $curr_total );
+        // Reduce previous user donation count and amoount.
+        $previous_customer->decrease_purchase_count();
+        $previous_customer->decrease_value( $curr_total );
 
+		// If purchase was completed and not ever refunded, adjust stats of new customers.
+		if ( 'revoked' == $status || 'publish' == $status ) {
 			$customer->increase_purchase_count();
 			$customer->increase_value( $new_total );
 		}
 
 		$payment->customer_id = $customer->id;
-	}
+	} else{
+		// Update user donation stat.
+		$customer->update_donation_value( $curr_total, $new_total );
+    }
 
 	// Set new meta values
 	$payment->user_id    = $customer->user_id;

includes/class-give-customer.php

@@ -511,6 +511,46 @@ public function decrease_value( $value = 0.00 ) {
 		return $this->purchase_value;
 	}
 
+	/**
+	 * Decrease/Increase a customer's lifetime value
+     *
+     * This function will update donation stat on basis of current amount and new amount donation difference.
+     * Difference value can positive or negative. Negative value will decrease user donation stat while positive value increase donation stat.
+     *
+     *
+     * @access public
+	 * @since  1.0
+	 *
+	 * @param  float $curr_amount Current Donation amount
+	 * @param  float $new_amount  New ( changed ) Donation amount
+	 *
+	 * @return mixed              If successful, the new donation stat value, otherwise false
+	 */
+	public function update_donation_value( $curr_amount, $new_amount ) {
+        /**
+         * Payment total difference value can be:
+         *  zero   (in case amount not change)
+         *  or -ve (in case amount decrease)
+         *  or +ve (in case amount increase)
+         */
+        $payment_total_diff = $new_amount - $curr_amount;
+
+        // We do not need to update donation stat if donation did not change.
+        if( ! $payment_total_diff ) {
+            return false;
+        }
+
+
+        if( $payment_total_diff > 0 ) {
+            $this->increase_value( $payment_total_diff );
+        }else{
+            // Pass payment total difference as +ve value to decrease amount from user lifetime stat.
+            $this->decrease_value( -$payment_total_diff );
+        }
+
+        return $this->purchase_value;
+	}
+
 	/**
 	 * Get the parsed notes for a customer as an array
 	 *