#!/usr/bin/env python3
"""
AI Teacher Bot - Complete CLI Interface
This is the main command-line interface for the AI Teacher Bot system.
"""

import os
import sys
import json
from datetime import datetime
from dotenv import load_dotenv

# Load environment variables
load_dotenv()

from user_state import UserState
from curriculum import Curriculum, Chapter, Module
from agents.level_assess import LevelAssessmentAgent
from agents.curriculum_planner import CurriculumPlannerAgent
from agents.coordinator import CoordinatorAgent
from agents.bloom_assess import BloomsAssessmentAgent

LEVELS = ['novice', 'intermediate', 'advanced']

def print_banner():
    """Print the application banner"""
    print("=" * 60)
    print("🧠 AI TEACHER BOT - COMPLETE LEARNING SYSTEM")
    print("=" * 60)
    print("Multi-Agent Adaptive Learning Platform")
    print("Features: Level Assessment, Dynamic Curriculum, Bloom's Taxonomy")
    print("=" * 60)

def check_api_key():
    """Check if OpenAI API key is configured"""
    api_key = os.getenv("OPENAI_API_KEY")
    if not api_key or api_key == "your_openai_api_key_here":
        print("❌ OpenAI API key not configured!")
        print("Please set your OPENAI_API_KEY in the .env file")
        print("Get your API key from: https://platform.openai.com/api-keys")
        return False
    return True

# Removed progress loading for now - focusing on core flow

def get_user_input():
    """Get topic and level from user"""
    print("\n🎯 Let's start your learning journey!")
    
    # Get topic
    while True:
        topic = input("\nWhat topic would you like to study? ").strip()
        if topic:
            break
        print("Please enter a valid topic")
    
    # Get level
    print("\n📚 What's your current experience level?")
    for i, level in enumerate(LEVELS, 1):
        print(f"  {i}. {level.capitalize()}")
    
    while True:
        try:
            level_choice = int(input("Enter the number for your level: "))
            if 1 <= level_choice <= len(LEVELS):
                claimed_level = LEVELS[level_choice - 1]
                break
            else:
                print("Please enter a valid number")
        except ValueError:
            print("Please enter a valid number")
    
    return topic, claimed_level

def run_level_assessment(topic, claimed_level):
    """Run level assessment for non-novice users"""
    print(f"\n📝 Assessing your knowledge level for {topic}...")
    print("This will help us create the perfect learning path for you.")
    
    try:
        assessor = LevelAssessmentAgent()
        actual_level = assessor.process(topic, claimed_level)
        return actual_level
    except Exception as e:
        print(f"❌ Error during assessment: {e}")
        print("⚠️  Defaulting to novice level")
        return "novice"

def generate_curriculum(topic, level):
    """Generate curriculum for the topic and level"""
    print(f"\n📚 Generating personalized curriculum for {topic} at {level} level...")
    
    try:
        planner = CurriculumPlannerAgent()
        curriculum = planner.process(topic, level)
        print("✅ Curriculum generated successfully!")
        return curriculum
    except Exception as e:
        print(f"❌ Error generating curriculum: {e}")
        return None

def main():
    """Main application function - Core Learning Flow"""
    print_banner()
    
    # Check API key
    if not check_api_key():
        return
    
    # Get user input for new session
    topic, claimed_level = get_user_input()
    user = UserState(topic=topic, claimed_level=claimed_level)
    print(f"\n👤 User Profile: {user.topic} at {user.claimed_level} level")
    
    # Level assessment
    if claimed_level == 'novice':
        user.set_actual_level("novice")
        print("✅ Skipping level assessment for novice users")
    else:
        actual_level = run_level_assessment(topic, claimed_level)
        user.set_actual_level(actual_level)
        print(f"✅ Assessment complete! Your level: {actual_level}")
    
    # Generate curriculum
    curriculum = generate_curriculum(user.topic, user.actual_level)
    if curriculum is None:
        print("❌ Cannot proceed without curriculum")
        return
    
    # Display curriculum
    print("\n" + "="*60)
    print("📖 YOUR PERSONALIZED CURRICULUM")
    print("="*60)
    curriculum.print_curriculum()
    
    # Start teaching
    print(f"\n🚀 Starting your learning journey at {user.actual_level} level!")
    print("The AI teacher will guide you through each module step by step.")
    
    try:
        coordinator = CoordinatorAgent(user.actual_level, user)
        coordinator.teach_curriculum(curriculum)
        
        # Final summary
        print("\n" + "="*60)
        print("🎉 LEARNING SESSION COMPLETE!")
        print("="*60)
        print("You've completed your learning journey!")
        print("Great job on mastering the concepts! 🌟")
        
    except KeyboardInterrupt:
        print("\n\n⏸️  Learning session stopped by user")
        print("Thanks for learning with us!")
    except Exception as e:
        print(f"\n❌ Error during learning session: {e}")
        print("Please try again or check your configuration.")
    
    print("\n👋 Thank you for using AI Teacher Bot!")
    print("Keep learning and growing! 🌱")

if __name__ == "__main__":
    main()