var React = require('react');
var createReactClass = require('create-react-class');
var Col = require('react-bootstrap/lib/Col');
var Glyphicon = require('react-bootstrap/lib/Glyphicon');
var Button = require('react-bootstrap/lib/Button');
var ButtonGroup = require('react-bootstrap/lib/ButtonGroup');
var Modal = require('react-bootstrap/lib/Modal');
var PropTypes = require('prop-types');

var RightPanelActions = require('../actions/RightPanelActions');
var RightPanelStore = require('../stores/RightPanelStore');
var MenuStore = require('../stores/MenuStore');
var JarrTime = require('./time.react');

var PanelMixin = {
    propTypes: {obj: PropTypes.object.isRequired},
    getInitialState: function() {
        return {edit_mode: false, obj: this.props.obj, showModal: false};
    },
    getHeader: function() {
        var icon = null;
        if(this.props.obj.icon_url){
            icon = (<img width="16px" src={this.props.obj.icon_url} />);
        }
        var btn_grp = null;
        if(this.isEditable() || this.isRemovable()) {
            var edit_button = null;
            if(this.isEditable()) {
                edit_button = (<Button onClick={this.onClickEdit}>
                                <Glyphicon glyph="pencil" />
                               </Button>);
            }
            var rem_button = null;
            if(this.isRemovable()) {
                rem_button = (<Button onClick={this.onClickRemove}>
                                <Glyphicon glyph="remove-sign" />
                              </Button>);
            }
            btn_grp = (<ButtonGroup bsSize="small">
                           {edit_button}
                           {rem_button}
                       </ButtonGroup>);
        }
        return (<div id="right-panel-heading" className="panel-heading">
                    <Modal show={this.state.showModal} onHide={this.closeModal}>
                        <Modal.Header closeButton>
                            <Modal.Title>Are you sure ?</Modal.Title>
                        </Modal.Header>
                        <Modal.Footer>
                            <Button onClick={this.confirmDelete}>
                                Confirm
                            </Button>
                        </Modal.Footer>
                    </Modal>

                    <h4>{icon}{this.getTitle()}</h4>
                    {btn_grp}
                </div>);
    },
    getKey: function(prefix, suffix) {
        return ((this.state.edit_mode?'edit':'fix') + prefix
                + '-' + this.props.obj.id + '-' + suffix);
    },
    getCore: function() {
        var items = [];
        var key;
        if(!this.state.edit_mode) {
        this.fields.filter(function(field) {
            return field.type != 'ignore';
        }).map(function(field) {
            key = this.getKey('dt', field.key);
            items.push(<dt key={key}>{field.title}</dt>);
            key = this.getKey('dd', field.key);
            if(field.type == 'string') {
                items.push(<dd key={key}>{this.props.obj[field.key]}</dd>);
            } else if(field.type == 'bool') {
                if(this.props.obj[field.key]) {
                    items.push(<dd key={key}><Glyphicon glyph="check" /></dd>);
                } else {
                    items.push(<dd key={key}><Glyphicon glyph="unchecked" /></dd>);
                }
            } else if (field.type == 'list') {
                items.push(<dd key={key}>{this.props.obj[field.key].reduce(function(previousTag, currentTag) {
                    return currentTag.concat(", ", previousTag)
                }, "")}</dd>)
            } else if (field.type == 'link') {
                items.push(<dd key={key}>
                              <a href={this.props.obj[field.key]}>
                            {this.props.obj[field.key]}
                              </a>
                           </dd>);
            }
        }.bind(this));
        } else {
        this.fields.filter(function(field) {
            return field.type != 'ignore';
        }).map(function(field) {
            key = this.getKey('dd', field.key);
            items.push(<dt key={key}>{field.title}</dt>);
            key = this.getKey('dt', field.key);
            var input = null;
            if(field.type == 'string' || field.type == 'link') {
                input = (<input type="text" name={field.key}
                                onChange={this.saveField}
                                defaultValue={this.props.obj[field.key]} />);
            } else if (field.type == 'bool') {
                input = (<input type="checkbox" name={field.key}
                                onChange={this.saveField}
                                defaultChecked={this.props.obj[field.key]} />);
            }
            items.push(<dd key={key}>{input}</dd>);
        }.bind(this));
        }
        return (<dl className="dl-horizontal">{items}</dl>);
    },
    getSubmit: function() {
        return (<dd key={this.getKey('dd', 'submit')}>
                    <button className="btn btn-default" onClick={this.saveObj}>
                        Submit
                    </button>
                </dd>);
    },
    render: function() {
        return (<div className="panel panel-default">
                    {this.getHeader()}
                    {this.getBody()}
                </div>
        );
    },
    onClickEdit: function() {
        this.setState({edit_mode: !this.state.edit_mode});
    },
    onClickRemove: function() {
        this.setState({showModal: true});
    },
    closeModal: function() {
        this.setState({showModal: false});
    },
    confirmDelete: function() {
        this.setState({showModal: false}, function() {
            RightPanelActions.delObj(this.props.obj.id, this.obj_type);
        }.bind(this));
    },
    saveField: function(evnt) {
        var obj = this.state.obj;
        for(var i in this.fields) {
            if(evnt.target.name == this.fields[i].key) {
                if(this.fields[i].type == 'bool') {
                    obj[evnt.target.name] = evnt.target.checked;
                } else {
                    obj[evnt.target.name] = evnt.target.value;
                }
                break;
            }
        }
        this.setState({obj: obj});
    },
    saveObj: function() {
        var to_push = {};
        this.fields.map(function(field) {
            to_push[field.key] = this.state.obj[field.key];
        }.bind(this));
        this.setState({edit_mode: false}, function() {
            RightPanelActions.putObj(this.props.obj.id, this.obj_type, to_push);
        }.bind(this));
    },
};

var Article = createReactClass({
    mixins: [PanelMixin],
    isEditable: function() {return false;},
    isRemovable: function() {return true;},
    fields: [{'title': 'Date', 'type': 'string', 'key': 'date'},
             {'title': 'Original link', 'type': 'link', 'key': 'link'},
             {'title': 'Tags', 'type': 'list', 'key': 'tags'}
    ],
    obj_type: 'article',
    getTitle: function() {return this.props.obj.title;},
    getBody: function() {
        return (<div className="panel-body">
                    {this.getCore()}
                    <div id="article-content" dangerouslySetInnerHTML={
                        {__html: this.props.obj.content}} />
                </div>);
    }
});

var Feed = createReactClass({
    mixins: [PanelMixin],
    isEditable: function() {return true;},
    isRemovable: function() {return true;},
    obj_type: 'feed',
    fields: [{'title': 'Feed title', 'type': 'string', 'key': 'title'},
             {'title': 'Description', 'type': 'string', 'key': 'description'},
             {'title': 'Feed link', 'type': 'link', 'key': 'link'},
             {'title': 'Site link', 'type': 'link', 'key': 'site_link'},
             {'title': 'Enabled', 'type': 'bool', 'key': 'enabled'},
             {'title': 'Private', 'type': 'bool', 'key': 'private'},
             {'title': 'Filters', 'type': 'ignore', 'key': 'filters'},
             {'title': 'Category', 'type': 'ignore', 'key': 'category_id'},
    ],
    getTitle: function() {return this.props.obj.title;},
    getFilterRow: function(i, filter) {
        return (<dd key={'d' + i + '-' + this.props.obj.id}
                        className="input-group filter-row">
                <span className="input-group-btn">
                    <button className="btn btn-default" type="button"
                            data-index={i} onClick={this.removeFilterRow}>
                        <Glyphicon glyph='minus' />
                    </button>
                </span>
                <select name="action on" className="form-control"
                        data-index={i} onChange={this.saveFilterChange}
                        defaultValue={filter['action on']}>
                    <option value="match">match</option>
                    <option value="no match">no match</option>
                </select>
                <input name="pattern" type="text" className="form-control"
                        data-index={i} onChange={this.saveFilterChange}
                        defaultValue={filter.pattern} />
                <select name="type" className="form-control"
                        data-index={i} onChange={this.saveFilterChange}
                        defaultValue={filter.type}>
                    <option value='simple match'>simple match</option>
                    <option value='regex'>regex</option>
                </select>
                <select name="action" className="form-control"
                        data-index={i} onChange={this.saveFilterChange}
                        defaultValue={filter.action}>
                    <option value="mark as read">mark as read</option>
                    <option value="mark as favorite">mark as favorite</option>
                </select>
            </dd>);
    },
    getFilterRows: function() {
        var rows = [];
        if(this.state.edit_mode) {
            for(var i in this.state.obj.filters) {
                rows.push(this.getFilterRow(i, this.state.obj.filters[i]));
            }
            return (<dl className="dl-horizontal">
                        <dt>Filters</dt>
                        <dd>
                            <button className="btn btn-default"
                                    type="button" onClick={this.addFilterRow}>
                                <Glyphicon glyph='plus' />
                            </button>
                        </dd>
                        {rows}
                    </dl>);
        }
        rows = [];
        rows.push(<dt key={'d-title'}>Filters</dt>);
        for(var i in this.state.obj.filters) {
            rows.push(<dd key={'d' + i}>
                        When {this.state.obj.filters[i]['action on']}
                        on "{this.state.obj.filters[i].pattern}"
                        ({this.state.obj.filters[i].type})
                        "=" {this.state.obj.filters[i].action}
                    </dd>);
        }
        return <dl className="dl-horizontal">{rows}</dl>;
    },
    getCategorySelect: function() {
        var content = null;
        if(this.state.edit_mode) {
            var categ_options = [];
            for(var index in MenuStore._datas.categories_order) {
                var cat_id = MenuStore._datas.categories_order[index];
                categ_options.push(
                        <option value={cat_id}
                                key={MenuStore._datas.categories[cat_id].id}>
                            {MenuStore._datas.categories[cat_id].name}
                        </option>);
            }
            content = (<select name="category_id" className="form-control"
                               onChange={this.saveField}
                               defaultValue={this.props.obj.category_id}>
                            {categ_options}
                       </select>);
        } else {
            content = MenuStore._datas.categories[this.props.obj.category_id].name;
        }
        return (<dl className="dl-horizontal">
                  <dt>Category</dt><dd>{content}</dd>
                </dl>);
    },
    getErrorFields: function() {
        if(this.props.obj.error_count < MenuStore._datas.error_threshold) {
            return;
        }
        if(this.props.obj.error_count < MenuStore._datas.max_error) {
            return (<dl className="dl-horizontal">
                        <dt>State</dt>
                        <dd>The download of this feed has encountered some problems. However its error counter will be reinitialized at the next successful retrieving.</dd>
                        <dt>Last error</dt>
                        <dd>{this.props.obj.last_error}</dd>
                    </dl>);
        }
    return (<dl className="dl-horizontal">
                <dt>State</dt>
                <dd>That feed has encountered too much consecutive errors and won't be retrieved anymore.</dd>

                <dt>Last error</dt>
                <dd>{this.props.obj.last_error}</dd>
                <dd>
                    <Button onClick={this.resetErrors}>Reset error count
                    </Button>
                </dd>
            </dl>);

    },
    resetErrors: function() {
        var obj = this.state.obj;
        obj.error_count = 0;
        this.setState({obj: obj}, function() {
            RightPanelActions.resetErrors(this.props.obj.id);
        }.bind(this));
    },
    getBody: function() {
        return (<div className="panel-body">
                    <dl className="dl-horizontal">
                        <dt>Created on</dt>
                        <dd><JarrTime stamp={this.props.obj.created_rel}
                                      text={this.props.obj.created_date} />
                        </dd>
                        <dt>Last fetched</dt>
                        <dd><JarrTime stamp={this.props.obj.last_rel}
                                      text={this.props.obj.last_retrieved} />
                        </dd>
                    </dl>
                    {this.getErrorFields()}
                    {this.getCategorySelect()}
                    {this.getCore()}
                    {this.getFilterRows()}
                    {this.state.edit_mode?this.getSubmit():null}
                </div>
        );
    },
    addFilterRow: function() {
        var obj = this.state.obj;
        obj.filters.push({action: "mark as read", 'action on': "match",
                      type: "simple match", pattern: ""});
        this.setState({obj: obj});
    },
    removeFilterRow: function(evnt) {
        var obj = this.state.obj;
        delete obj.filters[evnt.target.getAttribute('data-index')];
        this.setState({obj: obj});
    },
    saveFilterChange: function(evnt) {
        var index = evnt.target.getAttribute('data-index');
        var obj = this.state.obj;
        obj.filters[index][evnt.target.name] = evnt.target.value;
        this.setState({obj: obj});
    },
});

var Category = createReactClass({
    mixins: [PanelMixin],
    isEditable: function() {
        if(this.props.obj.id != 0) {return true;}
        else {return false;}
    },
    isRemovable: function() {return this.isEditable();},
    obj_type: 'category',
    fields: [{'title': 'Category name', 'type': 'string', 'key': 'name'}],
    getTitle: function() {return this.props.obj.name;},
    getBody: function() {
        return (<div className="panel-body">
                    {this.getCore()}
                    {this.state.edit_mode?this.getSubmit():null}
                </div>);
    },
});

var RightPanel = createReactClass({
    getInitialState: function() {
        return {category: null, feed: null, article: null, current: null};
    },
    getCategoryCrum: function() {
        return (<li><a onClick={this.selectCategory} href="#">
                    {this.state.category.name}
                </a></li>);
    },
    getFeedCrum: function() {
        return (<li><a onClick={this.selectFeed} href="#">
                    {this.state.feed.title}
                </a></li>);
    },
    getArticleCrum: function() {
        return <li>{this.state.article.title}</li>;
    },
    render: function() {
        window.scrollTo(0, 0);
        var brd_category = null;
        var brd_feed = null;
        var brd_article = null;
        var breadcrum = null;
        if(this.state.category) {
            brd_category = (<li className="rp-crum">
                                <a onClick={this.selectCategory} href="#">
                                    {this.state.category.name}
                                </a>
                            </li>);
        }
        if(this.state.feed) {
            brd_feed = (<li className="rp-crum">
                            <a onClick={this.selectFeed} href="#">
                                {this.state.feed.title}
                            </a>
                        </li>);
        }
        if(this.state.article) {
            brd_article = <li className="rp-crum">{this.state.article.title}</li>;
        }
        if(brd_category || brd_feed || brd_article) {
            breadcrum = (<ol className="breadcrumb" id="rp-breadcrum">
                            {brd_category}
                            {brd_feed}
                            {brd_article}
                         </ol>);
        }
        if(this.state.current == 'article') {
            var cntnt = (<Article type='article' obj={this.state.article}
                    key={this.state.article.id} />);
        } else if(this.state.current == 'feed') {
            var cntnt = (<Feed type='feed' obj={this.state.feed}
                    key={this.state.feed.id} />);
        } else if(this.state.current == 'category') {
            var cntnt = (<Category type='category' obj={this.state.category}
                    key={this.state.category.id} />);
        }

        return (<Col id="right-panel" xsHidden
                        smOffset={4} mdOffset={7} lgOffset={6}
                        sm={8} md={5} lg={6}>
                    {breadcrum}
                    {cntnt}
                </Col>
        );
    },
    selectCategory: function() {
        this.setState({current: 'category'});
    },
    selectFeed: function() {
        this.setState({current: 'feed'});
    },
    selectArticle: function() {
        this.setState({current: 'article'});
    },
    componentDidMount: function() {
        RightPanelStore.addChangeListener(this._onChange);
    },
    componentWillUnmount: function() {
        RightPanelStore.removeChangeListener(this._onChange);
    },
    _onChange: function() {
        this.setState(RightPanelStore.getAll());
    },
});

module.exports = RightPanel;