package org.baeldung.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.oauth2.common.util.OAuth2Utils;
import org.springframework.security.oauth2.provider.AuthorizationRequest;
import org.springframework.security.oauth2.provider.ClientDetails;
import org.springframework.security.oauth2.provider.ClientDetailsService;
import org.springframework.security.oauth2.provider.approval.Approval;
import org.springframework.security.oauth2.provider.approval.ApprovalStore;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.SessionAttributes;
import org.springframework.web.servlet.ModelAndView;

import java.security.Principal;
import java.util.LinkedHashMap;
import java.util.Map;

/**
 * Description : TODO(此处为 自定义的 oauth2 验证确认页面和出错页面)
 * User: h819
 * Date: 2015/12/9
 * Time: 16:58
 * To change this template use File | Settings | File Templates.
 */
@Controller
@SessionAttributes("authorizationRequest")
public class AccessConfirmationController {

    @Autowired
    private ClientDetailsService clientDetailsService;

    @Autowired
    private ApprovalStore approvalStore;

    @RequestMapping("/oauth/confirm_access")
    public ModelAndView getAccessConfirmation(Map<String, Object> model, Principal principal) throws Exception {
        AuthorizationRequest clientAuth = (AuthorizationRequest) model.remove("authorizationRequest");
        ClientDetails client = clientDetailsService.loadClientByClientId(clientAuth.getClientId());
        model.put("auth_request", clientAuth);
        model.put("client", client);
        Map<String, String> scopes = new LinkedHashMap<String, String>();
        for (String scope : clientAuth.getScope()) {
            scopes.put(OAuth2Utils.SCOPE_PREFIX + scope, "false");
        }
        for (Approval approval : approvalStore.getApprovals(principal.getName(), client.getClientId())) {
            if (clientAuth.getScope().contains(approval.getScope())) {
                scopes.put(OAuth2Utils.SCOPE_PREFIX + approval.getScope(),
                        approval.getStatus() == Approval.ApprovalStatus.APPROVED ? "true" : "false");
            }
        }
        model.put("scopes", scopes);
        return new ModelAndView("access_confirmation", model); // 订阅 appproval 页面
    }

    @RequestMapping("/oauth/error")
    public String handleError(Map<String, Object> model) throws Exception {
        model.put("message", "访问出错了！");
        return "oauth_error";     // 定义出错页面
    }

    /*public void setClientDetailsService(ClientDetailsService clientDetailsService) {
        this.clientDetailsService = clientDetailsService;
    }

    public void setApprovalStore(ApprovalStore approvalStore) {
        this.approvalStore = approvalStore;
    }*/
}