feat: Implement video play count tracking, refactor user update API, add missing CMS delete functions, and update database transaction handling.

services/lms-service/migrations/20260116000002_fix_grading_logic.sql

@@ -0,0 +1,45 @@
+-- Migration: Fix Grading Logic for Multi-tenancy
+-- Corrects fn_upsert_user_grade to properly handle organization_id in user_badges
+
+CREATE OR REPLACE FUNCTION fn_upsert_user_grade(
+    p_organization_id UUID,
+    p_user_id UUID,
+    p_course_id UUID,
+    p_lesson_id UUID,
+    p_score FLOAT4,
+    p_metadata JSONB DEFAULT NULL
+) RETURNS SETOF user_grades AS $$
+DECLARE
+    v_grade user_grades;
+    v_xp_amount INTEGER := 20; -- Default XP for completion
+    v_badge_id UUID;
+BEGIN
+    -- 1. Upsert grade
+    INSERT INTO user_grades (organization_id, user_id, course_id, lesson_id, score, metadata, attempts_count)
+    VALUES (p_organization_id, p_user_id, p_course_id, p_lesson_id, p_score, p_metadata, 1)
+    ON CONFLICT (user_id, lesson_id) DO UPDATE SET
+        score = EXCLUDED.score,
+        metadata = EXCLUDED.metadata,
+        attempts_count = user_grades.attempts_count + 1,
+        updated_at = NOW()
+    RETURNING * INTO v_grade;
+
+    -- 2. Award XP automatically
+    PERFORM fn_award_xp(p_user_id, p_organization_id, v_xp_amount, 'lesson_completion', 'lesson', p_lesson_id);
+
+    -- 3. Check for new badges
+    FOR v_badge_id IN 
+        SELECT id FROM badges 
+        WHERE organization_id = p_organization_id 
+          AND requirement_type = 'points' 
+          AND requirement_value <= (SELECT xp FROM users WHERE id = p_user_id)
+          AND id NOT IN (SELECT badge_id FROM user_badges WHERE user_id = p_user_id AND organization_id = p_organization_id)
+    LOOP
+        INSERT INTO user_badges (user_id, badge_id, organization_id) 
+        VALUES (p_user_id, v_badge_id, p_organization_id) 
+        ON CONFLICT (user_id, badge_id) DO NOTHING;
+    END LOOP;
+
+    RETURN NEXT v_grade;
+END;
+$$ LANGUAGE plpgsql;