Update AICategorizer provides rule-based task categorization using keyword matching

Author: Github-Saurabh0

src/main/java/AICategorizer.java

@@ -0,0 +1,164 @@
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * AICategorizer provides rule-based task categorization using keyword matching
+ * This simulates AI categorization without requiring external APIs
+ */
+public class AICategorizer {
+    
+    // Work-related keywords
+    private static final List<String> WORK_KEYWORDS = Arrays.asList(
+        "office", "project", "client", "meeting", "presentation", "report", "deadline",
+        "email", "call", "conference", "proposal", "budget", "team", "manager",
+        "work", "job", "business", "professional", "corporate", "company",
+        "task", "assignment", "review", "analysis", "development", "coding",
+        "programming", "software", "application", "system", "database", "server",
+        "sprint", "jira", "standup", "merge", "deploy", "deployment", "release",
+        "pull request", "code review", "pr", "git", "repository", "ticket",
+        "stakeholder", "spec", "requirement", "roadmap", "scrum", "agile",
+        "invoice", "timesheet", "payroll", "hr", "hrms", "onboarding", "recruitment",
+        "zoom", "meet", "teams", "slack", "okr", "kpi"
+    );
+    
+    // Personal-related keywords
+    private static final List<String> PERSONAL_KEYWORDS = Arrays.asList(
+        "birthday", "family", "shopping", "grocery", "home", "house", "personal",
+        "friend", "vacation", "holiday", "doctor", "appointment", "health",
+        "exercise", "gym", "hobby", "book", "movie", "restaurant", "dinner",
+        "lunch", "breakfast", "party", "celebration", "gift", "anniversary",
+        "wedding", "travel", "trip", "visit", "clean", "organize", "repair",
+        "maintenance", "garden", "pet", "car", "insurance", "bank", "finance",
+        "rent", "electricity", "water bill", "gas bill", "emi", "loan", "bill",
+        "milk", "vegetables", "fruits", "medicines", "tuition", "school",
+        "college", "exam", "fees", "passport", "aadhaar", "pan", "license",
+        "parents", "kids", "spouse", "relatives", "festival", "diwali", "holi"
+    );
+    
+    // Urgent-related keywords
+    private static final List<String> URGENT_KEYWORDS = Arrays.asList(
+        "urgent", "asap", "immediately", "now", "today", "emergency", "critical",
+        "important", "priority", "rush", "quick", "fast", "soon", "deadline",
+        "overdue", "late", "must", "need", "required", "essential", "crucial",
+        "vital", "pressing", "time-sensitive", "hurry", "instant", "immediate",
+        "blocker", "p0", "p1", "hotfix", "sev1", "sev2", "outage", "downtime",
+        "escalation", "last date", "last day", "final", "final call"
+    );
+    
+    /**
+     * Categorizes a task based on its title using keyword matching
+     * Priority: Urgent > Work > Personal > General
+     * 
+     * @param taskTitle The title of the task to categorize
+     * @return The category ("Urgent", "Work", "Personal", or "General")
+     */
+    public static String categorizeTask(String taskTitle) {
+        if (taskTitle == null || taskTitle.trim().isEmpty()) {
+            return "General";
+        }
+        
+        String lowerTitle = taskTitle.toLowerCase();
+        
+        // Check for urgent keywords first (highest priority)
+        for (String keyword : URGENT_KEYWORDS) {
+            if (lowerTitle.contains(keyword)) {
+                return "Urgent";
+            }
+        }
+        
+        // Check for work keywords
+        for (String keyword : WORK_KEYWORDS) {
+            if (lowerTitle.contains(keyword)) {
+                return "Work";
+            }
+        }
+        
+        // Check for personal keywords
+        for (String keyword : PERSONAL_KEYWORDS) {
+            if (lowerTitle.contains(keyword)) {
+                return "Personal";
+            }
+        }
+        
+        // Default category if no keywords match
+        return "General";
+    }
+    
+    /**
+     * Gets a confidence score for the categorization (0.0 to 1.0)
+     * Higher score means more confident in the categorization
+     * 
+     * @param taskTitle The title of the task
+     * @param category The assigned category
+     * @return Confidence score between 0.0 and 1.0
+     */
+    public static double getConfidenceScore(String taskTitle, String category) {
+        if (taskTitle == null || taskTitle.trim().isEmpty()) {
+            return 0.1;
+        }
+        
+        String lowerTitle = taskTitle.toLowerCase();
+        int matchCount = 0;
+        List<String> relevantKeywords;
+        
+        switch (category.toLowerCase()) {
+            case "urgent":
+                relevantKeywords = URGENT_KEYWORDS;
+                break;
+            case "work":
+                relevantKeywords = WORK_KEYWORDS;
+                break;
+            case "personal":
+                relevantKeywords = PERSONAL_KEYWORDS;
+                break;
+            default:
+                return 0.3; // Low confidence for general category
+        }
+        
+        // Count matching keywords
+        for (String keyword : relevantKeywords) {
+            if (lowerTitle.contains(keyword)) {
+                matchCount++;
+            }
+        }
+        
+        // Calculate confidence based on matches
+        if (matchCount == 0) {
+            return 0.3;
+        } else if (matchCount == 1) {
+            return 0.7;
+        } else if (matchCount == 2) {
+            return 0.85;
+        } else {
+            return 0.95;
+        }
+    }
+    
+    /**
+     * Provides suggestions for improving task categorization
+     * 
+     * @param taskTitle The title of the task
+     * @return Suggestion string
+     */
+    public static String getSuggestion(String taskTitle) {
+        String category = categorizeTask(taskTitle);
+        double confidence = getConfidenceScore(taskTitle, category);
+        
+        if (confidence < 0.5) {
+            return "💡 Tip: Add keywords like 'urgent', 'work', or 'personal' to improve auto-categorization!";
+        } else if (confidence < 0.8) {
+            return "👍 Good categorization! Consider adding more specific keywords for better accuracy.";
+        } else {
+            return "🎯 Excellent! Task categorized with high confidence.";
+        }
+    }
+    
+    /**
+     * Gets all available categories
+     * 
+     * @return Array of category names
+     */
+    public static String[] getAvailableCategories() {
+        return new String[]{"Work", "Personal", "Urgent", "General"};
+    }
+}