/*global window, document*/
import React from 'react';
import ReactDOM from 'react-dom'
import PureRenderMixin from 'react-addons-pure-render-mixin';
import _ from 'lodash';
import Reflux from 'reflux';
import StoreMixin from 'reflux-immutable/StoreMixin';

import Button from 'bd-stampy/components/Button';
import CourseActions from 'trc-client-core/src/course/CourseActions';
import CourseActivityHistory from 'trc-client-core/src/course/CourseActivityHistory';
import CourseStore from 'trc-client-core/src/course/CourseStore';
import Icon from 'trc-client-core/src/components/Icon';
import Loader from 'trc-client-core/src/components/Loader';
import ManagerSelectForm from 'trc-client-core/src/course/ManagerSelectForm';
import ModalView from 'trc-client-core/src/components/ModalView';
import PathwayStore from 'trc-client-core/src/course/PathwayStore';
import RegistrationActions from 'trc-client-core/src/course/RegistrationActions';
import RegistrationSingle from 'trc-client-core/src/course/RegistrationSingle';
import RegistrationStore from 'trc-client-core/src/course/RegistrationStore';
import SodataStore from 'trc-client-core/src/sodata/SodataStore';
import UserStore from 'trc-client-core/src/user/UserStore';
import Video from 'trc-client-core/src/components/Video';

var CourseActivityModal = React.createClass({
    displayName: 'CourseActivityModal',
    mixins: [
        Reflux.listenTo(SodataStore, 'onStoreChange'),
        Reflux.listenTo(CourseStore, 'onStoreChange'),
        Reflux.listenTo(RegistrationStore, 'onStoreChange'),
        PureRenderMixin,
        StoreMixin
    ],
    propTypes: {
        courseCode: React.PropTypes.string.isRequired,
        participantId: React.PropTypes.string.isRequired,
        actionable: React.PropTypes.bool
    },
    getDefaultProps() {
        return {
            actionable: true
        };
    },
    getStoreState() {
        return {
            course: CourseStore.get('course'),
            soData: SodataStore.get('soData'),
            fetchingParticipation: CourseStore.get('fetchingParticipation'),
            fetchingCourse: CourseStore.get('fetchingCourse'),
            participation: CourseStore.get('participation')
        };
    },
    getInitialState () {
        return {
            selectSoItem: null,
            soId: null,
            managers: null,
            videoButtonDisabled: true
        };
    },
    componentDidMount() {
        var query = {
            courseCode: this.props.courseCode,
            participantId: this.props.participantId
        };

        CourseActions.fetchCourse(query.courseCode);
        CourseActions.fetchParticipation(query);
    },
    onRequestChange(e, details) {
        this.setState(details);
    },
    onRequestEvaluation() {
        ReactDOM.findDOMNode(this.refs.form).submit();
    },
    onRequestSubmit() {

        if(UserStore.is('ROLE_MANAGER')) {
            RegistrationActions.sendRegistrationData([{
                participantId: this.props.participantId,
                soId: this.state.soId,
                courseCode: this.props.courseCode,
                operation: 'ENROLL',
                regId: null,
                operator: UserStore.get('username'),
                message: null
            }]);
        } else {
            RegistrationActions.requestTraining(this.state.manager, this.state.soId);
        }

        this.onClose();

    },

    //
    // Product Pathway modal specifics
    // TODO: remove to a more generic completion endpoint
    //
    startThenCompleteCourse() {
        PathwayStore
            .startComplete({
                participantId: this.props.participantId,
                courseCode: this.props.courseCode
            })
            .then(this.fauxCompletion);
    },
    fauxCompletion() {
        switch (this.getCourseType()){
            case 'DOCUMENT':
                var documentURL = this.state.course.getIn(['documentTag','documents',0,'url'])
                window.location = `upload/view?objectKey=${documentURL}`;
                break;
            case 'VIDEO':
                window.location.reload();
                break;
        }
    },
    onClose() {
        if(this.props.onClose) {
            return this.props.onClose();
        }

        //
        // TODO: SOOPER HACK. Remove along with backbone
        ReactDOM.unmountComponentAtNode(document.getElementById('Modal_content'));
    },
    onVideoFinish(){
        this.setState({videoButtonDisabled: false});
    },
    getCourseType() {
        // Documents and Videos are not poropertly
        // supported through course.type
        //
        var type = this.state.course.get('type');

        if (this.state.course.get('documentTag')) {
            type = 'DOCUMENT';
        }

        if (this.state.course.get('videoTag')) {
            type = 'VIDEO';
        }

        return type;
    },
    render() {
        var {course, participation} = this.state;

        if(!course || !participation) {
            return <ModalView title="Loading..." loading={false}>
                <Loader></Loader>
            </ModalView>
        }
        
        var title = (
            <span>{participation.get('firstName')} {participation.get('lastName')}&apos;s Training Activity</span>
        );

        return (
            <ModalView title={title} loading={this.state.fetchingCourse || this.state.fetchingParticipation}>
                <div className="margin-bottom2">
                    <h3 className="hug-top">
                        <Icon modifier="inline" hexCode={course.get('courseIcon')}></Icon>
                        {course.get('workshopName')}
                    </h3>
                    <CourseActivityHistory {...this.state} courseType={this.getCourseType()}/>
                </div>
                {this.renderModalBody()}
                <div className="ButtonBar right margin-top">
                    {this.renderCourseDetailsButton()}
                    <a className="Button Button-grey" onClick={this.onClose} data-js="close">Close</a>
                    {this.renderMainActionButton()}
                </div>
            </ModalView>
        );
    },
    renderModalBody() {
        return this[`render_${this.getCourseType()}`]();
    },
    render_E_LEARNING() {
        return this.renderCourseStatusText(this.props.process, {
            action: 'Go To Module'
        });
    },
    render_LOCAL_QUIZ() {
        return this.renderCourseStatusText(this.props.process, {
            action: 'Go To Exam'
        });
    },
    render_EVALUATION() {
        var courseCode = this.state.course.get('courseCode');
        var managerForm = <ManagerSelectForm name="managers" />;
        var copy = <p>In order to become certified a Manager must complete a Service Advisor Performance Evaluation and deem you to be Competent. Please select a Manager from below to be notified of your desire to be evaluated.</p>;

        if (courseCode === 'BT_EVAL' || courseCode === 'PT_EVAL') {
            copy = <p>In order to become certified you need a TMCA Staff Member or a Dealer Manager to complete your evaluation and deem you to be competent. Please click request to notify a TMCA Staff Member to complete your evaluation.</p>;
            managerForm = null;
        }

        return <div>
            {copy}
            <form ref="form" action="/careerPathway/managers" method="post">
                <input type="hidden" name="courseCode" value={courseCode} />
                <input type="hidden" name="careerPlanId" value={this.props.pathwayId} />
                {managerForm}
            </form>
        </div>;
    },
    render_FACE_TO_FACE() {
        var message;

        switch(this.state.course.get('stream')) {
            case 'PRO':
                message = 'You have not yet successfully completed the courses from the previous stage, however, to continue to complete this course or module, click the Course Details button below.';
                break;
            case 'TECH':
                message = `Unfortunately, ${this.state.participation.get('firstName')} is not yet eligible to be enrolled into this course as they have not completed the pre-requisites.`;
                break;
        }

        if(!this.state.participation.get('eligible')) {
            return <div className="InfoBox">{message}</div>;
        }

        var currentEnrollment = this.state.participation.get('history').find(item => item.get('process') === 'ENROLL');
        return (
            <div>
                <RegistrationSingle {...this.props} onChange={this.onRequestChange} currentEnrollment={currentEnrollment}/>
            </div>
        );

    },
    render_DOCUMENT() {},
    render_ACHIEVEMENT() {},
    render_CERTIFICATION() {},
    render_VIDEO() {
        var view;
        var {participation} = this.state;

        if(participation.get('status')) {
            view = `${participation.get('firstName')} completed this video. Please feel free to watch again to refresh your product knowledge.`;
        } else {
            view = 'Please watch the above video content. Once finished you will be able to Complete and return to your Product Plan.';
        }

        return (
            <div>
                <Video id={this.state.course.get('videoTag').get('videos').get(0).get('url')} onVideoFinish={this.onVideoFinish}/>
                <div className="margin-top">{view}</div>
            </div>
        );
    },
    renderCourseStatusText(process, termOverride) {
        var copy;
        var {participation} = this.state;
        var participationHistory = participation.get('history');
        var firstName = participation.get('firstName');
        var terms = _.defaults(termOverride, {
            action: 'Go To Course'
        });

        if(participationHistory.get('0')){
            process = participationHistory.getIn(['0','process']);
        }
        switch(process) {
            case 'ATTENDED':
            case 'COMPLETED':
                copy = <p>{firstName} completed this course. If you wish to do a refresh, please {terms.action}.</p>;
                break;

            case 'CREDIT':
                copy = <p>{firstName} was credited for this course. If you wish to do a refresh, please {terms.action}.</p>;
                break;

            case 'IN_PROGRESS':
                copy = <p>The TRC recognises that {firstName} has launched this module previously. <br/>If the module was completed on the LMS, completion may take up to 36 hours to be displayed. To reattempt the module, please click {terms.action}.</p>;
                break;

            case 'FAILED':
                copy = <p>Our records indicate {firstName} failed this course. To retry the module please {terms.action}.</p>;
                break;


            default:
                copy = <p>Our records indicate {firstName} has not yet completed this course. Please {terms.action} to complete the course.</p>;
        }

        return <div>{copy}</div>;
    },
    renderCourseDetailsButton() {
        if(this.state.course.get('viewableInList')) {
            return <a className="Button Button-clear" href={`/#/course/${this.state.course.get('courseCode')}`} onClick={this.onClose}>Course Details</a>;
        }
    },
    renderMainActionButton() {
        var {participation, course} = this.state;
        var button = null;
        var buttonProps = {
            className: 'Button',
            disabled: !participation.get('eligible')
        };

        if(!this.props.actionable) {
            return null;
        }

        switch (this.getCourseType()) {
            case 'FACE_TO_FACE':
                if(UserStore.is('ROLE_MANAGER')) {
                    button = <Button {...buttonProps} onClick={this.onRequestSubmit} disabled={!this.state.soId}>Enrol</Button>;
                } else {
                    button = <Button {...buttonProps} onClick={this.onRequestSubmit} disabled={!(this.state.soId && this.state.manager)}>Request</Button>;
                }

                break;
            case 'E_LEARNING':
                button = <a {...buttonProps} href={`/#/course/${course.get('courseCode')}/launch`} onClick={this.onClose} data-js="close">Go To Module</a>;
                break;
            case 'LOCAL_QUIZ':
                var href = `/careerPathway/${this.props.pathwayId}/assessment/quiz/${course.get('courseCode')}?participantId=${this.props.participantId}`;
                if(!this.props.pathwayId || !course.get('courseCode') || participation.get('eligible') === false) {
                    button = <Button {...buttonProps} disabled={true}>Go To Exam</Button>;
                } else {
                    button = <a {...buttonProps} href={href}>Go To Exam</a>;
                }
                break;
            case 'EVALUATION':
                button = <a {...buttonProps} onClick={this.onRequestEvaluation}>Request</a>;
                break;
            case 'DOCUMENT':
                if(this.state.course.getIn(['documentTag','documents']).size !== 0){
                    button = <a {...buttonProps} onClick={this.startThenCompleteCourse}>View</a>;
                }
                break;
            case 'VIDEO':
                button = <Button {...buttonProps} disabled={this.state.videoButtonDisabled} onClick={this.startThenCompleteCourse}>Complete</Button>;
                break;
        }

        return button;
    }
});


module.exports = CourseActivityModal;