Add user/workshop/curator follow & unfollow support (#320)

* Add follow & unfollow user functions

* Add follow & unfollow to CSteamUser object methods

* Add support for following & unfollowing curators

* Correctly parse for eresult on error

* Use eresultError() helper

classes/CSteamUser.js

@@ -166,6 +166,14 @@ CSteamUser.prototype.inviteToGroup = function(groupID, callback) {
 	this._community.inviteUserToGroup(this.steamID, groupID, callback);
 };
 
+CSteamUser.prototype.follow = function(callback) {
+	this._community.followUser(this.steamID, callback);
+};
+
+CSteamUser.prototype.unfollow = function(callback) {
+	this._community.unfollowUser(this.steamID, callback);
+};
+
 CSteamUser.prototype.getAliases = function(callback) {
 	this._community.getUserAliases(this.steamID, callback);
 };

components/groups.js

@@ -730,3 +730,69 @@ SteamCommunity.prototype.respondToAllGroupJoinRequests = function(gid, approve,
 		}
 	}, "steamcommunity");
 };
+
+/**
+ * Follows a curator page
+ * @param {string} clanid - ID of the curator
+ * @param {function} callback - Takes only an Error object/null as the first argument
+ */
+SteamCommunity.prototype.followCurator = function(clanid, callback) {
+	this.httpRequestPost({
+		"uri": "https://store.steampowered.com/curators/ajaxfollow",
+		"form": {
+			"clanid": clanid,
+			"sessionid": this.getSessionID(),
+			"follow": 1
+		},
+		"json": true
+	}, (err, res, body) => {
+		if (!callback) {
+			return;
+		}
+
+		if (err) {
+			callback(err);
+			return;
+		}
+
+		if (body.success && body.success.success != SteamCommunity.EResult.OK) {
+			callback(Helpers.eresultError(body.success.success));
+			return;
+		}
+
+		callback(null);
+	}, "steamcommunity");
+};
+
+/**
+ * Unfollows a curator page
+ * @param {string} clanid - ID of the curator
+ * @param {function} callback - Takes only an Error object/null as the first argument
+ */
+SteamCommunity.prototype.unfollowCurator = function(clanid, callback) {
+	this.httpRequestPost({
+		"uri": "https://store.steampowered.com/curators/ajaxfollow",
+		"form": {
+			"clanid": clanid,
+			"sessionid": this.getSessionID(),
+			"follow": 0
+		},
+		"json": true
+	}, (err, res, body) => {
+		if (!callback) {
+			return;
+		}
+
+		if (err) {
+			callback(err);
+			return;
+		}
+
+		if (body.success && body.success.success != SteamCommunity.EResult.OK) {
+			callback(Helpers.eresultError(body.success.success));
+			return;
+		}
+
+		callback(null);
+	}, "steamcommunity");
+};

components/users.js

@@ -296,6 +296,66 @@ SteamCommunity.prototype.inviteUserToGroup = function(userID, groupID, callback)
 	}, "steamcommunity");
 };
 
+SteamCommunity.prototype.followUser = function(userID, callback) {
+	if(typeof userID === 'string') {
+		userID = new SteamID(userID);
+	}
+
+	this.httpRequestPost({
+		"uri": `https://steamcommunity.com/profiles/${userID.toString()}/followuser/`,
+		"form": {
+			"sessionid": this.getSessionID(),
+		},
+		"json": true
+	}, function(err, response, body) {
+		if (!callback) {
+			return;
+		}
+
+		if (err) {
+			callback(err);
+			return;
+		}
+
+		if (body.success && body.success != SteamCommunity.EResult.OK) {
+			callback(Helpers.eresultError(body.success));
+			return;
+		}
+
+		callback(null);
+	}, "steamcommunity");
+};
+
+SteamCommunity.prototype.unfollowUser = function(userID, callback) {
+	if(typeof userID === 'string') {
+		userID = new SteamID(userID);
+	}
+
+	this.httpRequestPost({
+		"uri": `https://steamcommunity.com/profiles/${userID.toString()}/unfollowuser/`,
+		"form": {
+			"sessionid": this.getSessionID(),
+		},
+		"json": true
+	}, function(err, response, body) {
+		if (!callback) {
+			return;
+		}
+
+		if (err) {
+			callback(err);
+			return;
+		}
+
+		if (body.success && body.success != SteamCommunity.EResult.OK) {
+			callback(Helpers.eresultError(body.success));
+			return;
+		}
+
+		callback(null);
+	}, "steamcommunity");
+};
+
 SteamCommunity.prototype.getUserAliases = function(userID, callback) {
 	if (typeof userID === 'string') {
 		userID = new SteamID(userID);