app.py

from flask import Flask, render_template, session, redirect, url_for, request
import time
import os
import logging
from werkzeug.middleware.proxy_fix import ProxyFix

# ----------------------------------------------------
# 1. Logging Setup (Your code is perfect)
# ----------------------------------------------------
logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s - %(levelname)s - %(message)s'
)

# ----------------------------------------------------
# 2. Flask App Initialization (WITH THE FIXES)
# ----------------------------------------------------
app = Flask(__name__)

# A. SECRET_KEY setup (Your logic is fine, just made the error message more explicit)
app.secret_key = os.environ.get('SECRET_KEY')
if not app.secret_key:
    logging.error("FATAL: SECRET_KEY environment variable is not set. Sessions will fail.")
    app.secret_key = 'fallback-key-for-dev-only-not-secure'
    logging.warning("⚠️ Using insecure fallback secret key. Set SECRET_KEY in production.")

# B. ProxyFix (Enhanced for robustness on Hugging Face)
app.wsgi_app = ProxyFix(app.wsgi_app, x_for=2, x_proto=1, x_host=1, x_prefix=1)

# C. Secure cookie must be true
app.config['SESSION_COOKIE_SECURE'] = True

# D. *** THE CRITICAL ONE-SHOT FIX ***
#    Changed from 'Lax' to 'None' to allow the session to work inside the Hugging Face iframe.
app.config['SESSION_COOKIE_SAMESITE'] = 'None'

logging.info("✅ Flask App Initialized with FINAL Production Settings for iframe environments.")


# ----------------------------------------------------
# 3. Game Content (Your code is perfect)
# ----------------------------------------------------
videos = [
    "static/videos/Animated_Drought_Relief_Video_Creation.mp4",
    "static/videos/Animated_Rainwater_Harvesting_Video.mp4",
    "static/videos/Animated_Water_Filtration_Process_Video.mp4",
    "static/videos/Water_Filtration_Animation_Ready.mp4",
    "static/videos/Animated_Rainwater_Usage_Video.mp4",
    "static/videos/Water_Hero_Video_Generation_Complete.mp4"
]
video_descriptions = [
    "🌍 Water Crisis Alert", "🏠 Collection Master", "💧 Purification Expert",
    "🗃️ Storage Specialist", "♻️ Usage Strategist", "🌱 Environmental Champion"
]
task_scenarios = [
    {"question": "🌍 After watching the video, what is the FIRST step to address water scarcity at your home?",
     "choices": [
         {"action": "🌧️ Start collecting rainwater immediately", "description": "Begin harvesting nature's free water supply", "consequence": "✅ SMART START! You're taking the first step toward water independence! +100 XP", "xp_reward": 100, "icon": "🏆"},
         {"action": "🚿 Take longer showers to enjoy water while it lasts", "description": "Use more water before it runs out", "consequence": "❌ WRONG APPROACH! This worsens the problem. Conservation is key! -20 Health", "xp_reward": 0, "icon": "💸"},
         {"action": "⏳ Wait for government to solve the problem", "description": "Rely on authorities to fix water issues", "consequence": "❌ MISSED OPPORTUNITY! Individual action is crucial. Start now! -20 Health", "xp_reward": 0, "icon": "⏰"}
     ]},
    {"question": "🌧️ It's raining heavily! Your house has a metal roof. What's your FIRST action as a Water Conservation Hero?",
     "choices": [
         {"action": "🏠 Install gutters and downspouts on your roof", "description": "Channel rainwater efficiently into collection system", "consequence": "✅ SMART MOVE! You capture 80% of the rainfall. +100 XP", "xp_reward": 100, "icon": "🏆"},
         {"action": "🛣️ Let the water flow down the streets", "description": "Allow natural drainage", "consequence": "❌ MISSED OPPORTUNITY! Thousands of liters wasted. -20 Health", "xp_reward": 0, "icon": "💸"},
         {"action": "🛍️ Place plastic bags under the roof edge", "description": "Use bags to catch water", "consequence": "❌ INEFFICIENT! Bags tear easily. -20 Health", "xp_reward": 0, "icon": "🗑️"}
     ]},
    {"question": "💧 Your collection tank is filling up with rainwater, but you notice leaves and debris. What's your next step?",
     "choices": [
         {"action": "🔍 Install a first-flush diverter and filtration system", "description": "Remove initial dirty water", "consequence": "✅ EXCELLENT CHOICE! Clean water ready. +100 XP", "xp_reward": 100, "icon": "🧪"},
         {"action": "⚠️ Use dirty water directly", "description": "Proceed with unfiltered water", "consequence": "❌ HEALTH HAZARD! Contamination risk. -20 Health", "xp_reward": 0, "icon": "☠️"},
         {"action": "🧪 Add household bleach", "description": "Chemical treatment", "consequence": "❌ WRONG CHEMICAL! Unsafe for water. -20 Health", "xp_reward": 0, "icon": "⚗️"}
     ]},
    {"question": "🏺 You have 500 liters of clean rainwater. Where should you store it?",
     "choices": [
         {"action": "🏺 Underground concrete tank with cover", "description": "Safe long-term storage", "consequence": "✅ MASTER STRATEGY! Stored safely. +100 XP", "xp_reward": 100, "icon": "🏛️"},
         {"action": "🪣 Store in open buckets", "description": "Easy access containers", "consequence": "❌ BREEDING GROUND! Mosquito risk. -20 Health", "xp_reward": 0, "icon": "🦟"},
         {"action": "🌍 Dig a pit and let water sit", "description": "Natural storage", "consequence": "❌ CONTAMINATION RISK! Polluted. -20 Health", "xp_reward": 0, "icon": "🳳️"}
     ]},
    {"question": "♻️ Dry season! You have 200L left. Neighbor needs help. What do you do?",
     "choices": [
         {"action": "🌿 Use for drip irrigation and toilet flushing", "description": "Strategic usage", "consequence": "✅ WATER WISDOM! Saved 300L. +100 XP", "xp_reward": 100, "icon": "🌱"},
         {"action": "⏰ Save all water", "description": "Conservative approach", "consequence": "❌ MISSED IMPACT! Water can spoil. -20 Health", "xp_reward": 0, "icon": "⏰"},
         {"action": "🚽 Mix with sewage", "description": "Combine with waste", "consequence": "❌ TERRIBLE WASTE! Never mix. -20 Health", "xp_reward": 0, "icon": "🤮"}
     ]},
    {"question": "🌱 How will you inspire your community?",
     "choices": [
         {"action": "👥 Organize workshops", "description": "Teach others", "consequence": "✅ COMMUNITY HERO! Inspired 50 families. +100 XP", "xp_reward": 100, "icon": "🌟"},
         {"action": "🤐 Keep it to yourself", "description": "Exclusive access", "consequence": "❌ SELFISH! Collective action needed. -20 Health", "xp_reward": 0, "icon": "🚫"},
         {"action": "📱 Post online occasionally", "description": "Minimal effort", "consequence": "❌ MINIMAL IMPACT! Real change needs more. -20 Health", "xp_reward": 0, "icon": "📱"}
     ]}
]
achievements_list = [
    {"name": "🌟 First Steps", "desc": "Started your water journey", "condition": "start"},
    {"name": "💧 Drop Collector", "desc": "Learned about collection", "condition": "video_1"},
    {"name": "🔬 Purification Pro", "desc": "Mastered filtration", "condition": "video_2"},
    {"name": "🏺 Storage Sage", "desc": "Understood storage methods", "condition": "video_3"},
    {"name": "♻️ Usage Expert", "desc": "Optimized water usage", "condition": "video_4"},
    {"name": "🎯 Perfect Score", "desc": "100% accuracy achieved", "condition": "perfect"},
    {"name": "🔥 On Fire", "desc": "3 correct answers in a row", "condition": "streak_3"},
    {"name": "🌍 Water Hero", "desc": "Completed the full quest", "condition": "complete"}
]

# ----------------------------------------------------
# 4. Game Logic (Your code is perfect)
# ----------------------------------------------------
def calculate_level():
    return min(10, 1 + session.get('xp_points', 0) // 100)

def add_xp(amount: int):
    if 'xp_points' not in session:
        resume_or_initialize()
    old_level = session.get('player_level', 1)
    session['xp_points'] = session.get('xp_points', 0) + amount
    session['player_level'] = calculate_level()
    if session['player_level'] > old_level:
        session['message'] = f"🎉 LEVEL UP! You reached Level {session['player_level']}!"

def unlock_achievement(condition: str):
    if 'achievements' not in session:
        resume_or_initialize()
    for a in achievements_list:
        if a["condition"] == condition and a not in session['achievements']:
            # Use append to modify the list in place
            session['achievements'].append(a)
            session.modified = True # Mark session as modified
            session['message'] = f"🏆 Achievement Unlocked: {a['name']} - {a['desc']}"
            add_xp(50)

def reset_game_state():
    session.clear() # Use clear for a full reset
    session["video_index"] = 0
    session["feedback"] = ""
    session["quiz_correct_count"] = 0
    session["quiz_attempts"] = 0
    session["player_level"] = 1
    session["xp_points"] = 0
    session["achievements"] = []
    session["streak"] = 0
    session["health"] = 100
    session["video_watched"] = False
    session["question_answered"] = False
    session["message"] = ""

def resume_or_initialize():
    if "player_level" not in session:
        logging.info("🔁 No active session found. Initializing new game state...")
        reset_game_state()

def next_video_logic():
    if session['video_index'] < len(videos) - 1:
        session['video_index'] += 1
        session['feedback'] = ""
        session['video_watched'] = False
        session['question_answered'] = False
        session['message'] = ""
        if session['video_index'] > 0:
            unlock_achievement(f"video_{session['video_index']}")
        return redirect(url_for('main_app'))
    else:
        unlock_achievement("complete")
        return redirect(url_for('summary_page'))

def select_card_logic(choice_index: int):
    current_scenario = task_scenarios[session['video_index']]
    choice = current_scenario["choices"][choice_index]
    is_correct = choice["xp_reward"] > 0
    session['quiz_attempts'] += 1
    session['question_answered'] = True
    session['feedback'] = choice["consequence"]
    session['message'] = ""
    if is_correct:
        session['quiz_correct_count'] += 1
        session['streak'] += 1
        add_xp(choice["xp_reward"])
        if session['streak'] >= 3:
            unlock_achievement("streak_3")
    else:
        session['streak'] = 0
        session['health'] = max(0, session['health'] - 20)

# ----------------------------------------------------
# 5. Flask Routes (Your code is perfect)
# ----------------------------------------------------
@app.route('/')
def welcome_page():
    logging.info("ROUTE: / [GET] - Rendering welcome page.")
    return render_template('welcome.html')

@app.route('/begin_quest', methods=['POST'])
def begin_quest():
    logging.info("ROUTE: /begin_quest [POST] - Quest beginning.")
    reset_game_state()
    unlock_achievement("start")
    logging.info(f"✅ Session after init: {dict(session)}")
    return redirect(url_for('main_app'))

@app.route('/main', methods=['GET', 'POST'])
def main_app():
    resume_or_initialize()

    if request.method == 'POST':
        logging.info("ROUTE: /main [POST] - Received POST request. Session is present.")
        if 'mark_watched' in request.form:
            logging.info("Video marked as watched.")
            session['video_watched'] = True
            session['message'] = ""
        elif 'select_choice' in request.form:
            select_card_logic(int(request.form['select_choice']))
        elif 'next_level' in request.form or 'continue_quest' in request.form:
            return next_video_logic()
        elif 'replay_video' in request.form:
            session['feedback'] = ""
            session['video_watched'] = False
            session['question_answered'] = False
            session['message'] = "🔄 Video ready for replay!"
        elif 'main_menu' in request.form:
            return redirect(url_for('welcome_page'))
        return redirect(url_for('main_app'))

    idx = session['video_index']
    context = {
        'current_video_index': idx, 'total_videos': len(videos),
        'video_src': url_for('static', filename=videos[idx].replace('static/', '', 1)),
        'video_description': video_descriptions[idx], 'current_scenario': task_scenarios[idx],
        'player_level': session['player_level'], 'xp_points': session['xp_points'],
        'health': session['health'], 'streak': session['streak'],
        'quiz_correct_count': session['quiz_correct_count'], 'quiz_attempts': session['quiz_attempts'],
        'video_watched': session['video_watched'], 'question_answered': session['question_answered'],
        'feedback': session['feedback'], 'achievements': session['achievements'],
        'message': session.pop('message', '')
    }
    return render_template('main.html', **context)

@app.route('/summary')
def summary_page():
    resume_or_initialize()
    total_quizzes = len(task_scenarios)
    score = session.get('quiz_correct_count', 0)
    if score == total_quizzes and total_quizzes > 0:
        unlock_achievement("perfect")
    context = {
        'player_level': session['player_level'], 'xp_points': session['xp_points'],
        'quiz_score': score, 'total_quizzes': total_quizzes,
        'accuracy': (score / max(1, session['quiz_attempts'])) * 100,
        'achievements': session['achievements'], 'current_date': time.strftime("%B %d, %Y"),
        'message': session.pop('message', '')
    }
    return render_template('summary.html', **context)

@app.route('/restart_quest', methods=['POST'])
def restart_quest():
    reset_game_state()
    return redirect(url_for('welcome_page'))

# ----------------------------------------------------
# 6. Run App (Your code is perfect)
# ----------------------------------------------------
if __name__ == '__main__':
    app.run(debug=True, port=5000)