import sqlite3
import os

db_files = [
    r'./qple_quiz.db',
    r'./qple_quiz_corrupted.db.bak',
    r'./qple_quiz_0621.db'
]

for db in db_files:
    if not os.path.exists(db):
        print(f"File not found: {db}")
        continue
    print(f"\nDB: {db} (Size: {os.path.getsize(db)} bytes)")
    try:
        conn = sqlite3.connect(db)
        cursor = conn.cursor()
        
        # list tables
        cursor.execute("SELECT name FROM sqlite_master WHERE type='table';")
        tables = [row[0] for row in cursor.fetchall()]
        print("  Tables:", tables)
        
        for t in ['QuizQuestions', 'QuizExplain', 'Bookmark', 'DescriptiveGrading']:
            if t in tables:
                cursor.execute(f"SELECT COUNT(*) FROM {t};")
                cnt = cursor.fetchone()[0]
                print(f"    {t}: {cnt} rows")
                
                # if QuizQuestions, list source counts
                if t == 'QuizQuestions':
                    cursor.execute("PRAGMA table_info(QuizQuestions);")
                    cols = [c[1] for c in cursor.fetchall()]
                    print(f"      Columns: {cols}")
                    
                    cursor.execute("SELECT source, COUNT(*), MIN(id), MAX(id) FROM QuizQuestions GROUP BY source;")
                    src_cnt = cursor.fetchall()
                    print(f"      QuizQuestions breakdown: {src_cnt}")
                elif t == 'QuizExplain':
                    # check if source column exists
                    cursor.execute("PRAGMA table_info(QuizExplain);")
                    cols = [c[1] for c in cursor.fetchall()]
                    print(f"      Columns: {cols}")
                    
                    if 'source' in cols:
                        cursor.execute("SELECT source, COUNT(*), MIN(id), MAX(id) FROM QuizExplain GROUP BY source;")
                        print(f"      QuizExplain breakdown: {cursor.fetchall()}")
                    else:
                        cursor.execute("SELECT COUNT(*), MIN(id), MAX(id) FROM QuizExplain;")
                        print(f"      QuizExplain (no source): {cursor.fetchall()}")
                elif t == 'Bookmark':
                    cursor.execute("PRAGMA table_info(Bookmark);")
                    cols = [c[1] for c in cursor.fetchall()]
                    print(f"      Columns: {cols}")
                    
                    if 'source' in cols:
                        cursor.execute("SELECT source, COUNT(*), MIN(question_id), MAX(question_id) FROM Bookmark GROUP BY source;")
                        print(f"      Bookmark breakdown: {cursor.fetchall()}")
                    else:
                        cursor.execute("SELECT COUNT(*), MIN(question_id), MAX(question_id) FROM Bookmark;")
                        print(f"      Bookmark (no source): {cursor.fetchall()}")
                elif t == 'DescriptiveGrading':
                    cursor.execute("PRAGMA table_info(DescriptiveGrading);")
                    cols = [c[1] for c in cursor.fetchall()]
                    print(f"      Columns: {cols}")
                    
                    if 'source' in cols:
                        cursor.execute("SELECT source, COUNT(*) FROM DescriptiveGrading GROUP BY source;")
                        print(f"      DescriptiveGrading breakdown: {cursor.fetchall()}")
                    else:
                        cursor.execute("SELECT COUNT(*) FROM DescriptiveGrading;")
                        print(f"      DescriptiveGrading (no source): {cursor.fetchall()}")
        conn.close()
    except Exception as e:
        print(f"  Error inspecting: {e}")