/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * See LICENSE.txt included in this distribution for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at LICENSE.txt.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
 */
package opengrok.auth.plugin.util;

import jakarta.servlet.AsyncContext;
import jakarta.servlet.DispatcherType;
import jakarta.servlet.RequestDispatcher;
import jakarta.servlet.ServletContext;
import jakarta.servlet.ServletInputStream;
import jakarta.servlet.ServletRequest;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.http.Cookie;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import jakarta.servlet.http.HttpUpgradeHandler;
import jakarta.servlet.http.Part;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.Principal;
import java.util.Base64;
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;

public class DummyHttpServletRequestUser implements HttpServletRequest {

    private final Map<String, String> headers = new HashMap<>();
    private final Map<String, Object> attrs = new HashMap<>();
    private final HttpSession sessions = new HttpSession() {

        private final Map<String, Object> attrs = new HashMap<>();

        @Override
        public long getCreationTime() {
            return 0;
        }

        @Override
        public String getId() {
            return "abcd";
        }

        @Override
        public long getLastAccessedTime() {
            return 0;
        }

        @Override
        public ServletContext getServletContext() {
            return (ServletContext) DummyHttpServletRequestUser.this;
        }

        @Override
        public void setMaxInactiveInterval(int i) {
        }

        @Override
        public int getMaxInactiveInterval() {
            return 3600;
        }

        @Override
        @SuppressWarnings("deprecation")
        public jakarta.servlet.http.HttpSessionContext getSessionContext() {
            throw new UnsupportedOperationException("Not supported yet.");
        }

        @Override
        public Object getAttribute(String string) {
            return attrs.get(string);
        }

        @Override
        @SuppressWarnings("deprecation")
        public Object getValue(String string) {
            throw new UnsupportedOperationException("Not supported yet.");
        }

        @Override
        public Enumeration<String> getAttributeNames() {
            throw new UnsupportedOperationException("Not supported yet.");
        }

        @Override
        @SuppressWarnings("deprecation")
        public String[] getValueNames() {
            throw new UnsupportedOperationException("Not supported yet.");
        }

        @Override
        public void setAttribute(String string, Object o) {
            attrs.put(string, o);
        }

        @Override
        @SuppressWarnings("deprecation")
        public void putValue(String string, Object o) {
        }

        @Override
        public void removeAttribute(String string) {
            attrs.remove(string);
        }

        @Override
        @SuppressWarnings("deprecation")
        public void removeValue(String string) {
        }

        @Override
        public void invalidate() {
        }

        @Override
        public boolean isNew() {
            return true;
        }
    };

    @Override
    public String getAuthType() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public Cookie[] getCookies() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public long getDateHeader(String string) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    public void setHeader(String string, String value) {
        headers.put(string, value);
    }

    @Override
    public String getHeader(String string) {
        return headers.get(string);
    }

    @Override
    public Enumeration<String> getHeaders(String string) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public Enumeration<String> getHeaderNames() {
        return Collections.enumeration(headers.keySet());
    }

    @Override
    public int getIntHeader(String string) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getMethod() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getPathInfo() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getPathTranslated() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getContextPath() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getQueryString() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getRemoteUser() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public boolean isUserInRole(String string) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public Principal getUserPrincipal() {
        String authHeader = getHeader("authorization");
        if (authHeader == null) {
            return null;
        }

        if (!authHeader.startsWith("Basic")) {
            return null;
        }

        String encodedValue = authHeader.split(" ")[1];
        Base64.Decoder decoder = Base64.getDecoder();
        String username = new String(decoder.decode(encodedValue)).split(":")[0];
        return () -> username;
    }

    @Override
    public String getRequestedSessionId() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getRequestURI() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public StringBuffer getRequestURL() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getServletPath() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public HttpSession getSession(boolean bln) {
        return sessions;
    }

    @Override
    public HttpSession getSession() {
        return sessions;
    }

    @Override
    public String changeSessionId() {
        return null;
    }

    @Override
    public boolean isRequestedSessionIdValid() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public boolean isRequestedSessionIdFromCookie() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public boolean isRequestedSessionIdFromURL() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    @Deprecated
    public boolean isRequestedSessionIdFromUrl() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public boolean authenticate(HttpServletResponse httpServletResponse) {
        return false;
    }

    @Override
    public void login(String s, String s1) {

    }

    @Override
    public void logout() {

    }

    @Override
    public Collection<Part> getParts() {
        return null;
    }

    @Override
    public Part getPart(String s) {
        return null;
    }

    @Override
    public <T extends HttpUpgradeHandler> T upgrade(Class<T> aClass) {
        return null;
    }

    @Override
    public Object getAttribute(String string) {
        return attrs.get(string);
    }

    @Override
    public Enumeration<String> getAttributeNames() {
        return Collections.enumeration(attrs.keySet());
    }

    @Override
    public String getCharacterEncoding() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public void setCharacterEncoding(String string) throws UnsupportedEncodingException {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public int getContentLength() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public long getContentLengthLong() {
        return 0;
    }

    @Override
    public String getContentType() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public ServletInputStream getInputStream() throws IOException {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getParameter(String string) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public Enumeration<String> getParameterNames() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String[] getParameterValues(String string) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public Map<String, String[]> getParameterMap() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getProtocol() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getScheme() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getServerName() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public int getServerPort() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public BufferedReader getReader() throws IOException {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getRemoteAddr() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getRemoteHost() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public void setAttribute(String name, Object o) {
        attrs.put(name, o);
    }

    @Override
    public void removeAttribute(String name) {
        attrs.remove(name);
    }

    @Override
    public Locale getLocale() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public Enumeration<Locale> getLocales() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public boolean isSecure() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public RequestDispatcher getRequestDispatcher(String string) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    @Deprecated
    public String getRealPath(String string) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public int getRemotePort() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getLocalName() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public String getLocalAddr() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public int getLocalPort() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public ServletContext getServletContext() {
        return null;
    }

    @Override
    public AsyncContext startAsync() throws IllegalStateException {
        return null;
    }

    @Override
    public AsyncContext startAsync(ServletRequest servletRequest, ServletResponse servletResponse) throws IllegalStateException {
        return null;
    }

    @Override
    public boolean isAsyncStarted() {
        return false;
    }

    @Override
    public boolean isAsyncSupported() {
        return false;
    }

    @Override
    public AsyncContext getAsyncContext() {
        return null;
    }

    @Override
    public DispatcherType getDispatcherType() {
        return null;
    }
}