var GroupConstants = require('../constants/GroupConstants');

var ErrorActions = require('./ErrorActions');

var models = require('../models');
var Group = models.Group;
var Error = models.Error;

function createGroup(group) {
	return {
		type: GroupConstants.CREATE_GROUP,
		group: group
	}
}

function groupCreated(group) {
	return {
		type: GroupConstants.GROUP_CREATED,
		group: group
	}
}

function fetchGroups() {
	return {
		type: GroupConstants.FETCH_GROUPS
	}
}

function groupsFetched(groups) {
	return {
		type: GroupConstants.GROUPS_FETCHED,
		groups: groups
	}
}

function updateGroup(group) {
	return {
		type: GroupConstants.UPDATE_GROUP,
		group: group
	}
}

function groupUpdated(group) {
	return {
		type: GroupConstants.GROUP_UPDATED,
		group: group
	}
}

function fetchAll() {
	return function (dispatch) {
		dispatch(fetchGroups());

		$.ajax({
			type: "GET",
			dataType: "json",
			url: "group/",
			success: function(data, status, jqXHR) {
				var e = new Error();
				e.fromJSON(data);
				if (e.isError()) {
					dispatch(ErrorActions.serverError(e));
				} else {
					dispatch(groupsFetched(data.groups.map(function(json) {
						var g = new Group();
						g.fromJSON(json);
						return g;
					})));
				}
			},
			error: function(jqXHR, status, error) {
				dispatch(ErrorActions.ajaxError(error));
			}
		});
	};
}

function create(group) {
	return function(dispatch) {
		dispatch(createGroup(group));
		$.ajax({
			type: "POST",
			dataType: "json",
			url: "group/",
			data: {group: group.toJSON()},
			success: function(data, status, jqXHR) {
				var e = new Error();
				e.fromJSON(data);
				if (e.isError()) {
					dispatch(ErrorActions.serverError(e));
				} else {
					var u = new Group();
					u.fromJSON(data);
					dispatch(groupCreated(u));
				}
			},
			error: function(jqXHR, status, error) {
				dispatch(ErrorActions.ajaxError(error));
			}
		});
	};
}

function update(group) {
	return function (dispatch) {
		dispatch(updateGroup());

		$.ajax({
			type: "PUT",
			dataType: "json",
			url: "group/"+group.GroupId+"/",
			data: {group: group.toJSON()},
			success: function(data, status, jqXHR) {
				var e = new Error();
				e.fromJSON(data);
				if (e.isError()) {
					dispatch(ErrorActions.serverError(e));
				} else {
					var g = new Group();
					g.fromJSON(data);
					dispatch(groupUpdated(u));
				}
			},
			error: function(jqXHR, status, error) {
				dispatch(ErrorActions.ajaxError(error));
			}
		});
	};
}

module.exports = {
	fetchAll: fetchAll,
	create: create,
	update: update
};