var React = require('react');

var MatrixClientPeg = require("../../MatrixClientPeg");
var Matrix = require("matrix-js-sdk");

var ComponentBroker = require("../../ComponentBroker");

var ServerConfig = ComponentBroker.get("molecules/ServerConfig");

module.exports = {
    getInitialState: function() {
        return {
            step: 'choose_hs',
            busy: false,
            currentStep: 0,
            totalSteps: 1
        };
    },

    setStep: function(step) {
        this.setState({ step: step, errorText: '', busy: false });
    },

    onHSChosen: function(ev) {
        ev.preventDefault();
        MatrixClientPeg.replaceUsingUrl(this.refs.serverConfig.getHsUrl());
        this.setState({hs_url: this.refs.serverConfig.getHsUrl()});
        this.setStep("fetch_stages");
        var cli = MatrixClientPeg.get();
        this.setState({busy: true});
        var that = this;
        cli.loginFlows().then(function(result) {
            that.setState({
                flows: result.flows,
                currentStep: 1,
                totalSteps: result.flows.length+1
            });
            that.setStep('stage_'+result.flows[0].type);
        }, function(error) {
            that.setStep("choose_hs");
            that.setState({errorText: 'Unable to contact the given Home Server'});
        });
    },

    onUserPassEntered: function(ev) {
        ev.preventDefault();
        this.setState({busy: true});
        var that = this;
        MatrixClientPeg.get().login('m.login.password', {
            'user': that.refs.user.getDOMNode().value,
            'password': that.refs.pass.getDOMNode().value
        }).then(function(data) {
            // XXX: we assume this means we're logged in, but there could be a next stage
            MatrixClientPeg.replace(Matrix.createClient({
                baseUrl: that.state.hs_url,
                userId: data.user_id,
                accessToken: data.access_token
            }));
            var localStorage = window.localStorage;
            if (localStorage) {
                localStorage.setItem("mx_hs_url", that.state.hs_url);
                localStorage.setItem("mx_user_id", data.user_id);
                localStorage.setItem("mx_access_token", data.access_token);
            } else {
                console.warn("No local storage available: can't persist session!");
            }
            if (that.props.onLoggedIn) {
                that.props.onLoggedIn();
            }
            /*dis.dispatch({
                'action': 'logged_in'
            });*/
        }, function(error) {
            that.setStep("stage_m.login.password");
            that.setState({errorText: 'Login failed.'});
        });
    },

    componentForStep: function(step) {
        switch (step) {
            case 'choose_hs':
                return (
                    <div>
                        <form onSubmit={this.onHSChosen}>
                        <ServerConfig ref="serverConfig" />
                        <input type="submit" value="Continue" />
                        </form>
                    </div>
                );
            // XXX: clearly these should be separate organisms
            case 'stage_m.login.password':
                return (
                    <div>
                        <form onSubmit={this.onUserPassEntered}>
                        <input ref="user" type="text" placeholder="username" /><br />
                        <input ref="pass" type="password" placeholder="password" /><br />
                        <input type="submit" value="Log in" />
                        </form>
                    </div>
                );
        }
    },
};