package com.video.script.admin.config;

import com.video.script.admin.common.LoginUser;
import com.video.script.admin.common.UserContext;
import com.video.script.admin.service.TokenService;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

@Component
public class AuthInterceptor implements HandlerInterceptor {

    private final TokenService tokenService;

    public AuthInterceptor(TokenService tokenService) {
        this.tokenService = tokenService;
    }

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String uri = request.getRequestURI();
        if (uri.startsWith("/api/auth/login")) {
            return true;
        }
        String token = request.getHeader("Authorization");
        if (token == null || token.trim().isEmpty()) {
            response.setStatus(401);
            response.setContentType("application/json;charset=UTF-8");
            response.getWriter().write("{\"code\":401,\"message\":\"Unauthorized\",\"data\":null}");
            return false;
        }
        LoginUser loginUser = tokenService.parse(token.replace("Bearer ", ""));
        if (loginUser == null) {
            response.setStatus(401);
            response.setContentType("application/json;charset=UTF-8");
            response.getWriter().write("{\"code\":401,\"message\":\"Token invalid\",\"data\":null}");
            return false;
        }
        UserContext.set(loginUser);
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
        UserContext.clear();
    }
}