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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,96 +1,94 @@ | ||
| 'use client'; | ||
|
|
||
| import { usePathname, useSearchParams } from 'next/navigation'; | ||
| import Script from 'next/script'; | ||
| import { useEffect } from 'react'; | ||
|
|
||
| declare global { | ||
| interface Window { | ||
| gtag: ( | ||
| option: string, | ||
| gaTrackingId: string, | ||
| options: Record<string, unknown>, | ||
| ) => void; | ||
| dataLayer: Record<string, unknown>[]; | ||
| dataLayer?: Record<string, any>[]; | ||
| gtag?: (...args: any[]) => void; | ||
| } | ||
| } | ||
|
|
||
| interface GoogleAnalyticsProps { | ||
| measurementId: string; | ||
| measurementId?: string; | ||
| } | ||
|
|
||
| // Validate measurement ID format | ||
| const isValidMeasurementId = (id: string): boolean => { | ||
| return /^G-[A-Z0-9]+$/.test(id); | ||
| }; | ||
|
|
||
| export function GoogleAnalytics({ measurementId }: GoogleAnalyticsProps) { | ||
| /** | ||
| * Single component to initialize Google Analytics and | ||
| * track page views on route changes using the Next.js App Router. | ||
| */ | ||
| export default function GoogleAnalytics({ | ||
| measurementId, | ||
| }: GoogleAnalyticsProps) { | ||
| const pathname = usePathname(); | ||
| const searchParams = useSearchParams(); | ||
|
|
||
| useEffect(() => { | ||
| if (!measurementId || !isValidMeasurementId(measurementId)) return; | ||
| if ( | ||
| typeof window === 'undefined' || | ||
| !measurementId || | ||
| typeof window.gtag === 'undefined' | ||
| ) { | ||
| return; | ||
| } | ||
|
|
||
| const url = pathname + searchParams.toString(); | ||
| // Construct page path with query strings (if any) | ||
| const pagePath = searchParams.toString() | ||
| ? `${pathname}?${searchParams.toString()}` | ||
| : pathname; | ||
|
|
||
| window.gtag?.('config', measurementId, { | ||
| page_path: url, | ||
| window.gtag('config', measurementId, { | ||
| page_path: pagePath, | ||
| }); | ||
| }, [pathname, searchParams, measurementId]); | ||
| }, [measurementId, pathname, searchParams]); | ||
|
|
||
| if (!measurementId || !isValidMeasurementId(measurementId)) { | ||
| console.warn('Invalid or missing Google Analytics Measurement ID'); | ||
| if (!measurementId) { | ||
| // If you don't provide a measurement ID, no GA scripts will load | ||
| return null; | ||
| } | ||
|
|
||
| return ( | ||
| <> | ||
| <script | ||
| async | ||
| {/* Load the gtag script AFTER the page is interactive */} | ||
| <Script | ||
| src={`https://www.googletagmanager.com/gtag/js?id=${measurementId}`} | ||
| strategy="afterInteractive" | ||
| /> | ||
| <script | ||
| dangerouslySetInnerHTML={{ | ||
| __html: ` | ||
| window.dataLayer = window.dataLayer || []; | ||
| function gtag(){dataLayer.push(arguments);} | ||
| gtag('js', new Date()); | ||
| gtag('config', '${measurementId}', { | ||
| page_path: window.location.pathname, | ||
| }); | ||
| `, | ||
| }} | ||
| /> | ||
| <Script id="ga-init" strategy="afterInteractive"> | ||
| {` | ||
| window.dataLayer = window.dataLayer || []; | ||
| function gtag(){ dataLayer.push(arguments); } | ||
| gtag('js', new Date()); | ||
| gtag('config', '${measurementId}', { | ||
| page_path: window.location.pathname, | ||
| }); | ||
| `} | ||
| </Script> | ||
| </> | ||
| ); | ||
| } | ||
|
|
||
| // Safe event tracking utility with input validation | ||
| export const trackEvent = ( | ||
| action: string, | ||
| category: string, | ||
| label: string, | ||
| value?: number, | ||
| ) => { | ||
| // Validate inputs | ||
| if (!action || typeof action !== 'string') return; | ||
| if (!category || typeof category !== 'string') return; | ||
| if (!label || typeof label !== 'string') return; | ||
| if (value !== undefined && typeof value !== 'number') return; | ||
|
|
||
| // Sanitize inputs | ||
| const sanitizedAction = action.slice(0, 100); | ||
| const sanitizedCategory = category.slice(0, 100); | ||
| const sanitizedLabel = label.slice(0, 100); | ||
|
|
||
| if (typeof window.gtag !== 'undefined') { | ||
| try { | ||
| window.gtag('event', sanitizedAction, { | ||
| event_category: sanitizedCategory, | ||
| event_label: sanitizedLabel, | ||
| value: value, | ||
| }); | ||
| } catch (error) { | ||
| console.error('Error tracking event:', error); | ||
| } | ||
| /** | ||
| * Example helper function to track custom GA events. | ||
| */ | ||
| export function trackEvent({ | ||
| action, | ||
| category, | ||
| label, | ||
| value, | ||
| }: { | ||
| action: string; | ||
| category: string; | ||
| label: string; | ||
| value?: number; | ||
| }) { | ||
| if (typeof window !== 'undefined' && typeof window.gtag !== 'undefined') { | ||
| window.gtag('event', action, { | ||
| event_category: category, | ||
| event_label: label, | ||
| value, | ||
| }); | ||
| } | ||
| }; | ||
| } |