package com.uas.kanban.controller;

import com.alibaba.fastjson.JSONObject;
import com.uas.kanban.annotation.NotEmpty;
import com.uas.kanban.base.BaseController;
import com.uas.kanban.exception.OperationException;
import com.uas.kanban.model.RememberKey;
import com.uas.kanban.model.User;
import com.uas.kanban.service.RememberKeyService;
import com.uas.kanban.service.UserService;
import com.uas.kanban.support.SessionHelper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

/**
 * 用户
 *
 * @author sunyj
 * @since 2017年9月1日 下午4:42:10
 */
@Controller
@RequestMapping("/user")
public class UserController extends BaseController<User> {

    @Autowired
    private UserService userService;

    @Autowired
    private RememberKeyService rememberKeyService;

    @Autowired
    private SessionHelper sessionHelper;

    /**
     * 登陆
     *
     * @param name     名称
     * @param password 密码
     * @param request  request
     * @param response response
     * @return 登陆信息
     * <table border=1 cellpadding=5 cellspacing=0 summary="Fields and types">
     * <tr>
     * <th>Key</th>
     * <th>Value</th>
     * </tr>
     * <tr>
     * <td>code</td>
     * <td>用户 code</td>
     * </tr>
     * <tr>
     * <td>name</td>
     * <td>用户名称</td>
     * </tr>
     * <tr>
     * <td>role</td>
     * <td>用户角色</td>
     * </tr>
     * <tr>
     * <td>key</td>
     * <td>生成的 key</td>
     * </tr>
     * </table>
     */
    @RequestMapping("/login")
    @ResponseBody
    public Map<String, Object> login(@NotEmpty("name") String name, @NotEmpty("password") String password,
                                     HttpServletRequest request, HttpServletResponse response) {
        User user = userService.login(name, password);
        if (user != null) {
            sessionHelper.saveSession(request, user);
            String userCode = user.codeNotEmpty();
            RememberKey rememberKey = rememberKeyService.generate(userCode);
            // 生成的 key 保存到 cookie 里
            Integer maxInactiveInterval = rememberKey.getMaxInactiveInterval();
            addCookie("code", userCode, maxInactiveInterval, response);
            addCookie("key", rememberKey.getKey(), maxInactiveInterval, response);

            Map<String, Object> map = new HashMap<>();
            map.put("name", name);
            map.put("role", user.getRole());
            return map;
        }
        return null;
    }

    /**
     * 添加 cookie
     *
     * @param name     cookie 名
     * @param value    cookie 值
     * @param maxAge   有效时间（秒）
     * @param response response
     */
    private void addCookie(String name, String value, Integer maxAge, HttpServletResponse response) {
        Cookie cookie = new Cookie(name, value);
        cookie.setMaxAge(maxAge);
        cookie.setPath("/");
        response.addCookie(cookie);
    }

    /**
     * 退出登陆
     *
     * @param request request
     * @return 是否成功登陆
     * @throws OperationException 并非登陆状态
     */
    @RequestMapping("/logout")
    @ResponseBody
    public boolean logout(HttpServletRequest request) throws OperationException {
        User user = sessionHelper.readSession(request);
        if (user != null) {
            sessionHelper.clearSession(request);
            rememberKeyService.clearOldKey(user.codeNotEmpty());
            return true;
        }
        throw new OperationException("并非登陆状态");
    }

    /**
     * 重置密码
     *
     * @param password    旧密码
     * @param newPassword 新密码
     * @param request     request
     * @return 是否重置成功
     */
    @RequestMapping("/resetPwd")
    @ResponseBody
    public boolean resetPwd(@NotEmpty("password") String password, @NotEmpty("newPassword") String newPassword,
                            HttpServletRequest request) {
        return userService.resetPassword(password, newPassword);
    }

    /**
     * 初始化管理员
     *
     * @param name     名称
     * @param password 密码
     * @param request  request
     * @return 账户信息
     */
    @RequestMapping("/initAdmin")
    @ResponseBody
    public User initAdmin(@NotEmpty("name") String name, @NotEmpty("password") String password, HttpServletRequest request) throws OperationException {
        User user = new User();
        user.setName(name);
        user.setPassword(password);
        user.setRole(User.Role.Admin);
        return save(JSONObject.toJSONString(user), request);
    }

    /**
     * 为指定用户分配面板
     *
     * @param userCode   用户 code
     * @param panelCodes 面板 code
     * @param request    request
     * @return 分配成功
     */
    @RequestMapping("/assignPanel")
    @ResponseBody
    public boolean assignPanel(@NotEmpty("userCode") String userCode, String[] panelCodes, HttpServletRequest request) {
        userService.assignPanel(userCode, panelCodes == null ? null : Arrays.asList(panelCodes));
        return true;
    }
}