Github oAuth 登陆模块附 ThinkJS 示例

github.js

var querystring = require("querystring");
var request = require("request");
function Github(config) {
	if(!config.client_id || !config.client_secret || !config.redirect_uri) {
		throw Error("client_id, client_secret, redirect_uri is required");
	}

	for(var i in config) this[i] = config[i];
	if( !config.scope ) this.scope = "user";
}
Github.prototype.getAuthorizeUrl = function() {
	var baseUrl = "https://github.com/login/oauth/authorize";
	return baseUrl + "?" + querystring.stringify({
			client_id: this.client_id,
			redirect_uri: this.redirect_uri,
			scope: this.scope,
			state: this.state || ""
		});
}
Github.prototype.getAccessToken = function(code) {
	var that = this,
		baseUrl = "https://github.com/login/oauth/access_token",
		data = {
			client_id: that.client_id,
			client_secret: that.client_secret,
			code: code,
			redirect_uri: that.redirect_uri,
		};
	if(this.state) data.state = this.state;

	return new Promise(function(resolve, reject) {
		return request.post({
			url: baseUrl,
			headers: { "Accept": "application/json" },
			form: data
		}, function(err, httpResponse, body) {
			if(err) reject(Error(err));
			var res = JSON.parse(body);
			if(res.access_token) resolve(res);
			else reject(Error(res));
		})
	})
}
Github.prototype.getUserInfo = function(token) {
	return new Promise(function(resolve, reject) {
		return request.get({
			url: "https://api.github.com/user",
			headers: {
				"User-Agent": "@lizheming",
				"Authorization": "token "+token
			}
		}, function(err, httpResponse, body) {
			if(err) reject(Error(err));
			var res;
			if(!(res = JSON.parse(body))) reject(Error(body));
			return resolve(res);
		})
	})
}
module.exports = function(config) { return new Github(config) }

LoginController.js

var github = reguire("./github.js")({
	client_id: "xxxx",
	client_secret: "oooo",
	redirect_uri: "http://xxx.com/login/callback" //和申请 KEY 时填写的 CALLBACK 地址要一样
});
module.exports = Controller({
	indexAction: function() {
		this.end('<a href="'+github.getAuthorizeUrl()+'">Login with Github</a>');
	},

	callbackAction: function() {
		var that = this;
		github.getAccessToken(this.get("code")).then(function(token) {
			return github.getUserInfo(token.access_token);
		}).then(function(user) {
			that.end("email: " + user.email + "<br>" + "login: " + user.login);
		})
	}
})