Initial commit: Brachnha Insight project setup
- Next.js 14+ with App Router and TypeScript - Tailwind CSS and ShadCN UI styling - Zustand state management - Dexie.js for IndexedDB (local-first data) - Auth.js v5 for authentication - BMAD framework integration Co-Authored-By: Claude <noreply@anthropic.com>
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src/lib/llm/intent-detector.ts
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src/lib/llm/intent-detector.ts
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/**
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* Intent Detector
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*
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* Classifies user messages as "venting" or "insight" based on keyword patterns.
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* Uses a combination of keyword-based heuristics for fast classification.
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*
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* Venting Indicators:
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* - Negative emotion words (frustrated, stuck, hate, broke)
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* - Problem-focused language (doesn't work, failing, error)
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* - Uncertainty or confusion (don't understand, why does)
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* - Time spent struggling (hours, days, all day)
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*
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* Insight Indicators:
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* - Positive realization words (get, understand, clicked, realized)
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* - Solution-focused language (figured out, solved, fixed)
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* - Teaching/explaining intent (so the trick is, here's what)
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* - Completion or success (finally, working, done)
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*/
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export type Intent = 'venting' | 'insight';
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// Venting keyword patterns (more specific to avoid false positives)
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const VENTING_KEYWORDS = [
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'frustrated',
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'stuck',
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'hate',
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'broke',
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'broken',
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"don't understand",
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'doesnt understand',
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'confused',
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'failing',
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'error',
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"won't work",
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'wont work',
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'cant figure',
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"can't figure",
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'struggling',
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'difficult',
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'hard',
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'annoying',
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// Question words (only when at start or with ?)
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'why',
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'how do',
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'help',
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];
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// Insight keyword patterns (more specific to avoid false positives)
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const INSIGHT_KEYWORDS = [
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'finally get', // More specific than just "get"
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'get it', // Also add "get it" pattern
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'get it now', // "I get it now"
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'understand',
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'clicked',
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'realized',
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'figured it out', // Common phrase: "I figured it out"
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'figured out', // Alternative: "I figured out the bug"
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'solved',
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'fixed',
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'fixed it', // "I fixed it"
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'now working', // More specific than just "working"
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"it's working", // "It's working now"
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'its working',
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'done',
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'finally',
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'solution',
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'found the solution', // "I found the solution"
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'trick is',
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'trick was', // "The trick was to..."
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"here's what",
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'heres what',
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'learned',
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'key is',
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'answer',
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'accomplished',
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'makes sense', // "This makes sense"
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'makes sense now',
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];
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/**
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* Classifies the intent of a user message as "venting" or "insight".
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* @param input - The user's message text
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* @returns The classified intent ('venting' | 'insight')
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*/
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export function classifyIntent(input: string): Intent {
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if (!input || input.trim().length === 0) {
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return 'venting'; // Default to venting for empty input
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}
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const normalizedInput = input.toLowerCase().trim();
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// Count insight indicators (positive patterns) FIRST
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let insightScore = 0;
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for (const keyword of INSIGHT_KEYWORDS) {
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if (normalizedInput.includes(keyword)) {
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insightScore += 1;
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}
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}
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// Count venting indicators (negative patterns)
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let ventingScore = 0;
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for (const keyword of VENTING_KEYWORDS) {
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if (normalizedInput.includes(keyword)) {
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ventingScore += 1;
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}
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}
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// Strong insight patterns (solution language, teaching) take ULTIMATE precedence
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// This check happens AFTER scoring but BEFORE time-struggling check
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const strongInsightPatterns = [
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'figured it out', // Common phrase: "I figured it out"
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'figured out', // Alternative: "I figured out the bug"
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'solution is',
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'trick is',
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'key is',
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"here's what",
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'heres what',
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];
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const hasStrongInsightPattern = strongInsightPatterns.some(pattern =>
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normalizedInput.includes(pattern)
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);
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// Strong insight patterns override everything else
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// "figured out but it took forever" - still insight because they accomplished it
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if (hasStrongInsightPattern) {
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return 'insight';
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}
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// Questions are typically venting (seeking help)
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const isQuestion = normalizedInput.includes('?') ||
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normalizedInput.startsWith('why ') ||
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normalizedInput.startsWith('how ') ||
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normalizedInput.startsWith('what ') ||
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normalizedInput.startsWith('when ') ||
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normalizedInput.startsWith('where ');
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if (isQuestion && insightScore === 0) {
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return 'venting';
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}
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// Special case: time spent struggling is venting UNLESS there's strong insight pattern
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const timeStrugglingPatterns = [
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'all day',
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'for hours',
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' hours ',
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'days',
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'forever',
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];
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const hasTimeStrugglingPattern = timeStrugglingPatterns.some(pattern =>
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normalizedInput.includes(pattern)
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);
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if (hasTimeStrugglingPattern && !hasStrongInsightPattern) {
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return 'venting';
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}
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// Decision logic: insight if insight score is strictly higher than venting score
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// Default to venting for tie or when scores are equal (safer assumption)
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// Also default to venting when there are no clear indicators (both scores are 0)
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if (insightScore > ventingScore && insightScore > 0) {
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return 'insight';
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}
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return 'venting';
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}
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