/*
 * This file is part of the authRXBN single sign-on package.
 *
 * (c) Ruben Meyer <contact@rxbn.de>
 */

module.exports = {
	'command': 'user <action> <nick> [data...]',
	'description': 'add, get, update or remove an user',
	'actionDependencies': ['vorpal'],
	'action': (actionDependencies) => {
		let vorpal = actionDependencies.vorpal;
		return (args, cb) => {
			if(typeof args.action !== 'undefined') {
				let action = args.action.toLowerCase();
				let profile = {
					user: args.nick,
					pass: null,
					mail: null,
					group: 0
				};

				// add a new user
				if(action === 'add') {
					if(Array.isArray(args.data) && args.data.length >= 1) {
						// set data
						profile.pass = global['modules'].auth.generateHash(args.data[0]);
						if(args.data.length >= 2) profile.mail = args.data[1];
						if(args.data.length >= 3) profile.group = args.data[2];

						// haystack verifying
						let haystack = profile.user;
						if(typeof profile.mail !== 'undefined' && profile.mail !== null) haystack = [profile.user, profile.mail];

						// query user by haystack
						global['modules'].database.getUser(haystack, (err, rep) => {
							if(err) {
								global['logs'].error("ERR: While finding user");
								global['logs'].error(err);
							}
							else {
								// no users exist, add user
								if (!rep) {
									global['modules'].database.addUser(profile.user, (profile.mail || ''), profile.pass, profile.group, (errAdd, repAdd) => {
										if(errAdd) {
											global['logs'].error("ERR: While adding user");
											global['logs'].error(errAdd);
										}
										else vorpal.log("Reply: "+repAdd);
									});
								// user already exists
								} else {
									vorpal.log("User exists: ");

									rep.forEach((el, i) => {
										el["passhash"] = undefined; // not needed
										rep[i] = el;
									});
									vorpal.log(rep);
								}
							}
						});
					// missing data
					} else {
						global['logs'].log("No data is present or is missing. Please see:");
						global['logs'].log("$ user help add");
						cb();
					}
				// query users
			} else if(action === 'get' || action === 'ls') {
					// wildcard catch-all
					if(profile.user === '*') {
						global['modules'].database.getUsers((err, rep) => {
							if(rep) {
								rep.forEach((el, i) => {
									el["passhash"] = undefined; // not needed
									rep[i] = el;
								});
								global['logs'].log(rep);
							}
							if(err) {
								global['logs'].error('$ user get *');
								global['logs'].error(err);
							}
						});
					} else {
						// query users by first input <nickname>
						global['modules'].database.getUser(profile.user, (err, rep) => {
							// user exists
							if(rep && rep.length == 1) {
								global['logs'].log("User exists: ");

								rep.forEach((el, i) => {
									el["passhash"] = undefined; // not needed
									rep[i] = el;
								});
								global['logs'].log(rep);
							} else {
								// found more than one user
								if(rep && rep.length >= 2) {
									global['logs'].warn("multiple users found for "+profile.user+".");
									rep.forEach((el) => {
										global['logs'].warn("found user with id: "+el._id);
									});
								// user does not exist
								} else {
									global['logs'].warn("User "+profile.user+" doesn't exist.");
								}
							}

							// query error
							if(err) {
								global['logs'].error('$ user get '+profile.user);
								global['logs'].error(err);
							}
						});
					}

				// update users, just one property
				} else if(action === 'update') {
					if(args.data.length < 2) global['logs'].error("No data supplied.");
					else {
						let property = args.data[0];
						let param = args.data[1];
						global['logs'].debug("Prop: "+property+"; Param: "+param);

						// query user
						global['modules'].database.getUser(profile.user, (err, rep) => {
							// user exists
							if(rep && rep.length == 1) {
								let obj = {};
								obj[property] = param;
								global['modules'].database.updateUser(String(rep[0]._id), obj, (errUpd, repUpd) => {
									// updated user
									if(repUpd) {
										global['logs'].log("User with id "+String(rep[0]._id)+" was updated.");
									// user not updated
									} else {
										global['logs'].warn("User with id "+String(rep[0]._id)+" doesn't exist.");
									}

									// query error
									if(errUpd) {
										global['logs'].error('$ user update '+profile.user+' '+property+' '+param+' [on update]');
										global['logs'].error(errUpd);
									}
								});
							} else  {
								// found more than one user
								if(rep && rep.length >= 2) {
									global['logs'].warn("multiple users found for "+profile.user+". bad state. can't update.");
									rep.forEach((el) => {
										global['logs'].warn("found user with id: "+el._id);
									});
								// user does not exist
								} else {
									global['logs'].warn("User "+profile.user+" doesn't exist.");
								}
							}

							// query error
							if(err) {
								global['logs'].error('$ user update '+profile.user+' '+field+' '+param+' [on query]');
								global['logs'].error(err);
							}
						});
					}
				// remove users
				} else if(action === 'remove' || action === 'delete') {
					// haystack
					let haystack = profile.user;
					if(typeof profile.mail !== 'undefined' && profile.mail !== null) haystack = [profile.user, profile.mail];

					// query user
					global['modules'].database.getUser(haystack, (err, rep) => {
						if(rep) {
							vorpal.log("user exists. deleting him.");
							global['logs'].debug(rep);

							// remove user
							global['modules'].database.delUser(rep[0].email, (errDel, repDel) => {
								if(repDel) {
									vorpal.log("deleted user.");
									global['logs'].debug(repDel);
								}
								else {
									vorpal.log("ERR: while deleting user.");
									global['logs'].debug(errDel);
								}
							});
						}
					});
				} else if(action === 'help') {
					if(args.nick === 'add') {
						vorpal.log("user add <nickname> <raw password> <mail> [group]");
						vorpal.log("<nickname>: user nickname");
						vorpal.log("<raw password>: will be hashed ASAP");
						vorpal.log("<mail>: format: user@example.tld");
						vorpal.log("[group]: not needed; only Numbers; group id");

						vorpal.log("---");

						vorpal.log("returns 0 or 1 and printing errors");
					} else if(args.nick === 'get') {
						vorpal.log("user get <nickname or email>");
						vorpal.log("<nickname or email>: searching both in both; format: foobar OR user@example.tld");

						vorpal.log("---");
						vorpal.log("user get * - to get all users");
						vorpal.log("prints JSON-object of user data");
					} else if(args.nick === 'update') {
						vorpal.log("user update <nickname> <field> <parameter>");
						vorpal.log("<nickname>: user nickname");
						vorpal.log("<field>: string");
						vorpal.log("<parameter>: mixed data; will be converted to Boolean, Number or String");

						vorpal.log("---");

						vorpal.log("returns 0 or 1 and printing errors");
						vorpal.log("prints JSON-object of updated user data");
					} else if(args.nick === 'remove' || args.nick === 'delete') {
						vorpal.log("user remove|delete <nickname>");
						vorpal.log("<nickname>: user nickname or mail");

						vorpal.log("---");

						vorpal.log("returns 0 or 1 and printing errors");
					}
				}

				cb();
			} else  {
				vorpal.exec('user --help');
				cb();
			}
		}
	}
};