import React from 'react';
import DropDownButton from './DropDownButton.js';
import Util from './Util.js';

export default class MessageView extends React.PureComponent
{
    state = { showImages: false }

    formatLongDate(dt)
    {
        if (!(dt instanceof Date))
            dt = new Date(dt.replace(' ', 'T'));
        let h = dt.getHours();
        let m = dt.getMinutes();
        let s = dt.getSeconds();
        return Util.WeekDays[dt.getDay()]+' '+dt.getDate()+' '+Util.Months[dt.getMonth()]+' '+
            dt.getFullYear()+' '+(h < 10 ? '0' : '')+h+':'+(m < 10 ? '0' : '')+m+':'+(s < 10 ? '0' : '')+s;
    }

    componentWillReceiveProps(nextProps)
    {
        if (nextProps.msg != this.props.msg)
        {
            let ns = { showImages: false, blockedImages: false };
            if (nextProps.msg && /<img[^>]*>/i.exec(nextProps.msg.body_html))
            {
                ns.blockedImages = true;
            }
            this.setState(ns);
        }
    }

    showImages = () =>
    {
        this.setState({ showImages: true });
    }

    render()
    {
        let showImages = this.state.showImages;
        let msg = this.props.msg;
        let html;
        if (msg)
        {
            html = msg.body_html;
            if (!showImages)
            {
                html = html.replace(/(<img[^>]*?src=)(["'])([^'"]*\2)/ig, '$1$2blocked:$3');
                html = html.replace(/<style[^>]*>(.*)<\/style\s*>/ig, function(m, m1)
                {
                    m1 = m1.replace(/(url\(["']?|\@import\s*["'])([^"']*)/ig, '$1blocked:$2');
                    return '<style>'+m1+'</style>';
                });
            }
        }
        return <div className={'message-view'+(!msg ? ' no-mail-shown' : '')+(!this.props.quickReply ? ' no-quick' : '')}>
            <div className="actions">
                <DropDownButton dropdownId="reply" icon="mail_reply" text="Reply" />
                <a className="button"><img src="icons/mail_reply_all.png" />Reply All</a>
                <DropDownButton dropdownId="forward" icon="mail_forward" text="Forward" />
                <DropDownButton className="action-read"
                    checkable="1" checked={msg && !msg.flags.filter(f => f == 'unread').length}
                    checkedIcon="read_selected" icon="read"
                    checkedText="Unread" text="Read"
                    onClick={this.props.onToggleRead}
                />
                <DropDownButton className="action-spam" icon="spam" checkedIcon="spam_selected" checkable="1" text="Spam" checkedText="Not Spam" />
                <DropDownButton dropdownId="delete" className="action-delete" icon="delete" checkedIcon="delete_selected" checkable="1" text="Delete" checkedText="Undelete" />
                <a className="button show-dropdown"><img src="icons/label.png" />Label <span className="down"></span></a>
                <DropDownButton dropdownId="settings" whole="1" icon="config" text="Settings" hidden={this.props.layout != 'message-on-right'} />
            </div>
            <div className="nomail">
                <div className="flex1"></div>
                <div className="middle">
                    <img src="icons/no_mail.png" />
                    <div className="txt">No message selected</div>
                </div>
                <div className="flex1"></div>
            </div>
            {msg ? [
                <div className="headers">
                    <div className="top">
                        <div className="pin"></div>
                        <div className="time">{this.formatLongDate(msg.time)}</div>
                        <div className="subject">{msg.subject}</div>
                    </div>
                    <div className="header-table">
                        <div className="header">
                            <div className="field">From</div>
                            <div className="value"><a className="button">{msg.props.from ? msg.props.from[0]+' <'+msg.props.from[1]+'>' : 'unknown'}</a></div>
                        </div>
                        <div className="header">
                            <div className="field">To</div>
                            <div className="value">
                                {msg.props.to.map(a => <a className="button" title={a[0] ? a[0]+' <'+a[1]+'>' : a[1]}>{a[0] || a[1]}</a>)}
                            </div>
                        </div>
                        {msg.props.cc.length
                            ? <div className="header">
                                <div className="field">Cc</div>
                                <div className="value">
                                    {msg.props.cc.map(a => <a className="button" title={a[0] ? a[0]+' <'+a[1]+'>' : a[1]}>{a[0] || a[1]}</a>)}
                                </div>
                            </div>
                            : null}
                        {msg.props.bcc.length
                            ? <div className="header">
                                <div className="field">Bcc</div>
                                <div className="value">
                                    {msg.props.bcc.map(a => <a className="button" title={a[0] ? a[0]+' <'+a[1]+'>' : a[1]}>{a[0] || a[1]}</a>)}
                                </div>
                            </div>
                            : null}
                        {msg.props.replyto
                            ? <div className="header">
                                <div className="field">Reply-to</div>
                                <div className="value">
                                    {[msg.props.replyto].map(a => <a className="button" title={a[0] ? a[0]+' <'+a[1]+'>' : a[1]}>{a[0] || a[1]}</a>)}
                                </div>
                            </div>
                            : null}
                        {msg.props.attachments && msg.props.attachments.length
                            ? <div className="header">
                                <div className="field">Attachments</div>
                                <div className="value">
                                    {msg.props.attachments.map(a => (
                                        <a className="button" title={a.name} href={"backend/attachment/?msgId="+msg.id+"&sha1="+a.sha1} target="_blank">
                                            {a.name+' ('+Util.formatBytes(a.size)+')'}
                                        </a>
                                    ))}
                                </div>
                            </div>
                            : null}
                    </div>
                </div>,
                (this.state.blockedImages && !this.state.showImages
                    ? <div className="blocked-images">
                        <img src="icons/block.png" /> This message contains blocked images.
                        <a className="button raised" onClick={this.showImages}>Load Images</a>
                        {(msg.props.from ? <label><input type="checkbox" /> Always load from {msg.props.from[1]}</label> : null)}
                    </div>
                    : null),
                (html
                    ? <div className="text" dangerouslySetInnerHTML={{ __html: html }}></div>
                    : <div className="text plain">{msg.body_text}</div>),
                (this.props.quickReply
                    ? <div className="quick-reply">
                        <textarea></textarea>
                        <div className="btns">
                            <a className="button"><img src="icons/mail_send.png" /> Quick Reply</a>
                            <a className="button"><img src="icons/mail_reply_all.png" /> Quick Reply All</a>
                        </div>
                    </div>
                    : null),
            ] : null}
        </div>
    }
}