@jss-rule-engine/edge
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JavaScript
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function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
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};
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function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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import { NextResponse, userAgent } from 'next/server';
import { GraphQLSCPersonalizeService } from './ScPersonalizeService';
import { MiddlewareBase } from './middleware';
import { getScPersonalizedRewrite } from '../../lib/personalizationUtils';
/**
* Middleware / handler to support Sitecore Personalize
*/
var ScPersonalizeMiddleware = /** @class */ (function (_super) {
__extends(ScPersonalizeMiddleware, _super);
/**
* @param {ScPersonalizeMiddlewareConfig} [config] Personalize middleware config
*/
function ScPersonalizeMiddleware(config) {
var _this = _super.call(this, config) || this;
_this.config = config;
_this.handler = function (req, res) { return __awaiter(_this, void 0, void 0, function () {
var pathname, language, hostname, queryString, startTimestamp, response, site, personalizeInfo, ua, params, variantId, basePath, rewritePath, rewriteUrl;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
pathname = req.nextUrl.pathname;
language = this.getLanguage(req);
hostname = this.getHostHeader(req) || this.defaultHostname;
queryString = req.nextUrl.search;
startTimestamp = Date.now();
console.log('scPersonalizeHandler', hostname, startTimestamp, queryString);
response = res || NextResponse.next();
if (this.config.disabled && this.config.disabled(req, response)) {
console.log('skipped (personalize middleware is disabled)');
return [2 /*return*/, response];
}
if (response.redirected || // Don't attempt to personalize a redirect
this.isPreview(req) || // No need to personalize for preview (layout data is already prepared for preview)
this.excludeRoute(pathname)) {
console.log('skipped (%s)', response.redirected ? 'redirected' : this.isPreview(req) ? 'preview' : 'route excluded');
return [2 /*return*/, response];
}
site = this.getSite(req, res);
console.log('getPersonalizeInfo', pathname, language, site.name);
// Get personalization info from Experience Edge
this._personalizeService.setPersonalizeContext({ url: req.url, hostname: req.headers.get('hostname') });
return [4 /*yield*/, this._personalizeService.getPersonalizeInfo(pathname, language, site.name)];
case 1:
personalizeInfo = _a.sent();
if (!personalizeInfo) {
// Likely an invalid route / language
console.log('skipped (personalize info not found)');
return [2 /*return*/, response];
}
ua = userAgent(req).ua;
params = this.getExperienceParams(req);
console.log('params', ua, params);
variantId = personalizeInfo.activeVariantid;
if (!variantId) {
console.log('skipped (no variant identified)');
return [2 /*return*/, response];
}
basePath = (res === null || res === void 0 ? void 0 : res.headers.get('x-sc-rewrite')) || pathname;
rewritePath = getScPersonalizedRewrite(basePath, variantId);
console.log('Rewritten path - ', rewritePath);
rewriteUrl = req.nextUrl.clone();
rewriteUrl.pathname = rewritePath;
response = NextResponse.rewrite(rewriteUrl);
// Disable preflight caching to force revalidation on client-side navigation (personalization may be influenced)
// See https://github.com/vercel/next.js/issues/32727
response.headers.set('x-middleware-cache', 'no-cache');
// Share rewrite path with following executed middlewares
response.headers.set('x-sc-rewrite', rewritePath);
// Share site name with the following executed middlewares
response.cookies.set(this.SITE_SYMBOL, site.name);
return [2 /*return*/, response];
}
});
}); };
_this._personalizeService = new GraphQLSCPersonalizeService(__assign(__assign({}, config.edgeConfig), { fetch: fetch }));
return _this;
}
/**
* Gets the Next.js middleware handler with error handling
* @returns middleware handler
*/
ScPersonalizeMiddleware.prototype.getHandler = function () {
var _this = this;
return function (req, res) { return __awaiter(_this, void 0, void 0, function () {
var error_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 2, , 3]);
return [4 /*yield*/, this.handler(req, res)];
case 1: return [2 /*return*/, _a.sent()];
case 2:
error_1 = _a.sent();
console.log('Personalize middleware failed:');
console.log(error_1);
return [2 /*return*/, res || NextResponse.next()];
case 3: return [2 /*return*/];
}
});
}); };
};
ScPersonalizeMiddleware.prototype.getExperienceParams = function (req) {
return {
// It's expected that the header name "referer" is actually a misspelling of the word "referrer"
// req.referrer is used during fetching to determine the value of the Referer header of the request being made,
// used as a fallback
referrer: req.headers.get('referer') || req.referrer,
utm: {
campaign: req.nextUrl.searchParams.get('utm_campaign'),
content: req.nextUrl.searchParams.get('utm_content'),
medium: req.nextUrl.searchParams.get('utm_medium'),
source: req.nextUrl.searchParams.get('utm_source'),
},
};
};
ScPersonalizeMiddleware.prototype.excludeRoute = function (pathname) {
// ignore files
return pathname.includes('.') || _super.prototype.excludeRoute.call(this, pathname);
};
return ScPersonalizeMiddleware;
}(MiddlewareBase));
export { ScPersonalizeMiddleware };