package com.weiwojc.security;
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import com.weiwojc.utils.JwtUtils;
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import jakarta.servlet.FilterChain;
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import jakarta.servlet.ServletException;
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import jakarta.servlet.http.HttpServletRequest;
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import jakarta.servlet.http.HttpServletResponse;
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import lombok.RequiredArgsConstructor;
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import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
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import org.springframework.security.core.context.SecurityContextHolder;
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import org.springframework.security.core.userdetails.UserDetails;
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import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
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import org.springframework.stereotype.Component;
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import org.springframework.web.filter.OncePerRequestFilter;
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import java.io.IOException;
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import java.util.ArrayList;
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@Component
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@RequiredArgsConstructor
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public class JwtAuthenticationFilter extends OncePerRequestFilter {
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private final JwtUtils jwtUtils;
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@Override
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protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
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throws ServletException, IOException {
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String token = request.getHeader("token");
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if (token == null || token.isEmpty()) {
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filterChain.doFilter(request, response);
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return;
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}
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if (!jwtUtils.validateToken(token)) {
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filterChain.doFilter(request, response);
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return;
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}
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String username = jwtUtils.getUsernameFromToken(token);
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Long userId = jwtUtils.getUserIdFromToken(token);
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if (username != null && SecurityContextHolder.getContext().getAuthentication() == null) {
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UserDetails userDetails = new JwtUserDetails(userId, username);
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UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(
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userDetails, null, new ArrayList<>());
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authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
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SecurityContextHolder.getContext().setAuthentication(authentication);
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}
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filterChain.doFilter(request, response);
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}
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}
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