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import React from 'react'
import { Component } from 'react';
import authService from './AuthorizeService';
import { AuthenticationResultStatus } from './AuthorizeService';
import { LoginActions, QueryParameterNames, ApplicationPaths } from './ApiAuthorizationConstants';
// The main responsibility of this component is to handle the user's login process.
// This is the starting point for the login process. Any component that needs to authenticate
// a user can simply perform a redirect to this component with a returnUrl query parameter and
// let the component perform the login and return back to the return url.
export class Login extends Component {
constructor(props) {
super(props);
this.state = {
message: undefined
};
}
componentDidMount() {
const action = this.props.action;
switch (action) {
case LoginActions.Login:
this.login(this.getReturnUrl());
break;
case LoginActions.LoginCallback:
this.processLoginCallback();
break;
case LoginActions.LoginFailed:
const params = new URLSearchParams(window.location.search);
const error = params.get(QueryParameterNames.Message);
this.setState({ message: error });
break;
case LoginActions.Profile:
this.redirectToProfile();
break;
case LoginActions.Register:
this.redirectToRegister();
break;
default:
throw new Error(`Invalid action '${action}'`);
}
}
render() {
const action = this.props.action;
const { message } = this.state;
if (!!message) {
return <div>{message}</div>
} else {
switch (action) {
case LoginActions.Login:
return (<div>Processing login</div>);
case LoginActions.LoginCallback:
return (<div>Processing login callback</div>);
case LoginActions.Profile:
case LoginActions.Register:
return (<div></div>);
default:
throw new Error(`Invalid action '${action}'`);
}
}
}
async login(returnUrl) {
const state = { returnUrl };
const result = await authService.signIn(state);
switch (result.status) {
case AuthenticationResultStatus.Redirect:
break;
case AuthenticationResultStatus.Success:
await this.navigateToReturnUrl(returnUrl);
break;
case AuthenticationResultStatus.Fail:
this.setState({ message: result.message });
break;
default:
throw new Error(`Invalid status result ${result.status}.`);
}
}
async processLoginCallback() {
const url = window.location.href;
const result = await authService.completeSignIn(url);
switch (result.status) {
case AuthenticationResultStatus.Redirect:
// There should not be any redirects as the only time completeSignIn finishes
// is when we are doing a redirect sign in flow.
throw new Error('Should not redirect.');
case AuthenticationResultStatus.Success:
await this.navigateToReturnUrl(this.getReturnUrl(result.state));
break;
case AuthenticationResultStatus.Fail:
this.setState({ message: result.message });
break;
default:
throw new Error(`Invalid authentication result status '${result.status}'.`);
}
}
getReturnUrl(state) {
const params = new URLSearchParams(window.location.search);
const fromQuery = params.get(QueryParameterNames.ReturnUrl);
if (fromQuery && !fromQuery.startsWith(`${window.location.origin}/`)) {
// This is an extra check to prevent open redirects.
throw new Error("Invalid return url. The return url needs to have the same origin as the current page.")
}
return (state && state.returnUrl) || fromQuery || `${window.location.origin}/`;
}
redirectToRegister() {
this.redirectToApiAuthorizationPath(`${ApplicationPaths.IdentityRegisterPath}?${QueryParameterNames.ReturnUrl}=${encodeURI(ApplicationPaths.Login)}`);
}
redirectToProfile() {
this.redirectToApiAuthorizationPath(ApplicationPaths.IdentityManagePath);
}
redirectToApiAuthorizationPath(apiAuthorizationPath) {
const redirectUrl = `${window.location.origin}/${apiAuthorizationPath}`;
// It's important that we do a replace here so that when the user hits the back arrow on the
// browser they get sent back to where it was on the app instead of to an endpoint on this
// component.
window.location.replace(redirectUrl);
}
navigateToReturnUrl(returnUrl) {
// It's important that we do a replace here so that we remove the callback uri with the
// fragment containing the tokens from the browser history.
window.location.replace(returnUrl);
}
}
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