@askdoppler/core/dist/filter.js

Doppler Core: AI SEO / AEO traffic monitoring & intent detection, logging, and reporting for framework connectors.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getSource = getSource;
const utils_js_1 = require("./utils.js");
const index_js_1 = require("./filters/index.js");
const filters = [new index_js_1.OpenAI(), new index_js_1.Perplexity(), new index_js_1.Google(), new index_js_1.Bing()];
filters.forEach(async (filter) => {
    await filter.init();
});
function getSource(req) {
    const headers = (0, utils_js_1.normalizeHeaders)(req.headers);
    const userAgent = headers['user-agent'] || '';
    const url = req.url || '';
    // Check for click detection first (utm_source)
    let utmSource = null;
    let highlightedText = null;
    // Extract highlighted text from URL fragment
    const textFragmentMatch = url.match(/#:~:text=([^&]+)/);
    if (textFragmentMatch) {
        try {
            highlightedText = decodeURIComponent(textFragmentMatch[1]);
        }
        catch (error) {
            if (process.env?.DOPPLER_DEBUG) {
                console.warn('[@askdoppler/core:filter] - Failed to decode highlighted text:', error);
            }
        }
    }
    if (url.includes('?') || url.includes('&')) {
        try {
            const urlParams = new URLSearchParams(url.split('?')[1] || '');
            utmSource = urlParams.get('utm_source');
        }
        catch (error) {
            // If URL parsing fails, continue with other detection methods
            if (process.env?.DOPPLER_DEBUG) {
                console.warn('[@askdoppler/core:filter] - Failed to parse URL parameters:', error);
            }
        }
    }
    if (utmSource) {
        if (process.env?.DOPPLER_DEBUG) {
            console.log(`[@askdoppler/core:filter] - UTM source detected: ${utmSource}`);
        }
        for (const filter of filters) {
            for (const utm of filter.utm) {
                if (utmSource.includes(utm)) {
                    if (process.env?.DOPPLER_DEBUG) {
                        console.log(`[@askdoppler/core:filter] - UTM source ${utm} found for ${filter.name}`);
                    }
                    return {
                        source: filter.name,
                        intent: 'browse',
                        type: 'click',
                        highlightedText,
                        detected: true,
                    };
                }
            }
        }
    }
    for (const filter of filters) {
        const detected = filter.check(headers, url);
        if (process.env?.DOPPLER_DEBUG) {
            console.log(`[@askdoppler/core:filter] - ${filter.name} detected: ${detected}`);
        }
        if (detected) {
            if (process.env?.DOPPLER_DEBUG) {
                console.log(`[@askdoppler/core:filter] - ${filter.name} detected: ${detected}`);
            }
            return {
                source: filter.name,
                intent: filter.getIntent(userAgent),
                type: 'crawl',
                highlightedText: null,
                detected: true,
            };
        }
    }
    // Not detected
    if (process.env?.DOPPLER_DEBUG) {
        console.log(`[@askdoppler/core:filter] - No filter detected`);
    }
    return { source: null, intent: null, type: null, highlightedText: null, detected: false };
}