# AI帮你面试 - 核心应用程序
from flask import Flask, render_template, request, jsonify
import os
from dotenv import load_dotenv

# 加载环境变量
load_dotenv()

# 创建Flask应用实例
app = Flask(__name__)

# 配置API密钥
API_KEY = os.getenv('AI_API_KEY', '')  # 从环境变量获取API密钥

# 定义面试流程数据
interview_process = [
    {"id": 1, "title": "自我介绍", "description": "请简要介绍您自己，包括教育背景和工作经验", "duration": "3分钟"},
    {"id": 2, "title": "技术能力评估", "description": "回答技术相关问题，展示专业知识", "duration": "15分钟"},
    {"id": 3, "title": "项目经验分享", "description": "分享您参与的重要项目和成果", "duration": "10分钟"},
    {"id": 4, "title": "问题与解答", "description": "您可以向面试官提问", "duration": "7分钟"}
]

# API密钥验证装饰器
def require_api_key(func):
    def wrapper(*args, **kwargs):
        # 从请求头获取API密钥
        api_key = request.headers.get('X-API-Key')
        
        # 调试信息（实际生产环境应移除）
        print(f"[DEBUG] Received API Key: '{api_key}'")
        print(f"[DEBUG] Received API Key Length: {len(api_key) if api_key else 0}")
        print(f"[DEBUG] Expected API Key: '{API_KEY}'")
        print(f"[DEBUG] Expected API Key Length: {len(API_KEY)}")
        print(f"[DEBUG] Match: {api_key == API_KEY}")
        
        # 检查是否有不可见字符
        if api_key:
            print(f"[DEBUG] Received API Key Hex: {[hex(ord(c)) for c in api_key]}")
        print(f"[DEBUG] Expected API Key Hex: {[hex(ord(c)) for c in API_KEY]}")
        
        # 验证API密钥
        if not api_key or api_key != API_KEY:
            return jsonify({
                'success': False,
                'error': 'Unauthorized: Invalid API Key'
            }), 401
        
        return func(*args, **kwargs)
    
    # 保留原函数的元数据
    wrapper.__name__ = func.__name__
    wrapper.__doc__ = func.__doc__
    return wrapper

@app.route('/')
def home():
    """首页路由，显示应用主界面"""
    return render_template('index.html', app_name='AI帮你面试')

@app.route('/start_interview')
def start_interview():
    """开始面试路由，显示面试流程"""
    return render_template('interview.html', process=interview_process)

@app.route('/analyze_answer', methods=['POST'])
@require_api_key  # 添加API密钥验证
def analyze_answer():
    """AI分析回答的路由"""
    data = request.get_json()
    answer = data.get('answer', '')
    question_id = data.get('question_id', 1)
    
    # 模拟AI分析过程
    analysis = {
        'question_id': question_id,
        'content_analysis': {
            'completeness': 85,
            'relevance': 90,
            'depth': 75
        },
        'sentiment_analysis': {
            'confidence': 92,
            'sentiment': 'positive'
        },
        'suggestions': [
            '可以提供更多具体的项目成果数据',
            '注意控制回答时间，保持简洁明了',
            '可以结合实例说明技术能力'
        ],
        'overall_score': 85
    }
    
    return jsonify(analysis)

@app.route('/get_results')
@require_api_key  # 添加API密钥验证
def get_results():
    """获取面试结果的路由"""
    results = {
        'overall_score': 88,
        'category_scores': {
            'professional_knowledge': 90,
            'communication_skills': 85,
            'problem_solving': 87,
            'experience_relevance': 92
        },
        'strengths': [
            '技术知识扎实',
            '项目经验丰富',
            '表达清晰流畅'
        ],
        'improvement_areas': [
            '可以更详细地描述团队协作经历',
            '需要加强行业趋势了解',
            '回答可以更加结构化'
        ],
        'final_recommendation': '推荐进入下一轮面试'
    }
    
    return jsonify(results)

if __name__ == '__main__':
    """应用程序入口点"""
    app.run(debug=True, host='0.0.0.0', port=5000)