import "./message-body.js";
import MessageVersionsModal from '../modals/message-versions.js';
import dayjs from 'dayjs';
import filesize from "filesize";
import tpl_spinner from '../templates/spinner.js';
import { CustomElement } from './element.js';
import { __ } from '@converse/headless/i18n';
import { _converse, api, converse } from  "@converse/headless/converse-core";
import { html } from 'lit-element';
import { renderAvatar } from './../templates/directives/avatar';
import { renderRetractionLink } from './../templates/directives/retraction';

const { Strophe } = converse.env;
const u = converse.env.utils;

const i18n_edit_message = __('Edit this message');
const i18n_edited = __('This message has been edited');
const i18n_show = __('Show more');
const i18n_show_less = __('Show less');
const i18n_uploading = __('Uploading file:');
const i18n_new_messages = __('New messages');


class Message extends CustomElement {

    static get properties () {
        return {
            allow_retry: { type: Boolean },
            chatview: { type: Object},
            correcting: { type: Boolean },
            editable: { type: Boolean },
            error: { type: String },
            error_text: { type: String },
            from: { type: String },
            has_mentions: { type: Boolean },
            hats: { type: Array },
            edited: { type: String },
            is_delayed: { type: Boolean },
            is_encrypted: { type: Boolean },
            is_first_unread: { type: Boolean },
            is_me_message: { type: Boolean },
            is_only_emojis: { type: Boolean },
            is_retracted: { type: Boolean },
            is_spoiler: { type: Boolean },
            is_spoiler_visible: { type: Boolean },
            message_type: { type: String },
            model: { type: Object },
            moderated_by: { type: String },
            moderation_reason: { type: String },
            msgid: { type: String },
            occupant_affiliation: { type: String },
            occupant_role: { type: String },
            oob_url: { type: String },
            progress: { type: Number },
            reason: { type: String },
            received: { type: String },
            retractable: { type: Boolean },
            sender: { type: String },
            show_spinner: { type: Boolean },
            spoiler_hint: { type: String },
            subject: { type: String },
            time: { type: String },
            username: { type: String }
        }
    }

    render () {
        const format = api.settings.get('time_format');
        this.pretty_time = dayjs(this.time).format(format);
        if (this.show_spinner) {
            return tpl_spinner();
        } else if (this.model.get('file') && !this.model.get('oob_url')) {
            return this.renderFileProgress();
        } else if (['error', 'info'].includes(this.message_type)) {
            return this.renderInfoMessage();
        } else {
            return this.renderChatMessage();
        }
    }

    updated () {
        // XXX: This is ugly but tests rely on this event.
        // For "normal" chat messages the event is fired in
        // src/templates/directives/body.js
        if (
            this.show_spinner ||
            (this.model.get('file') && !this.model.get('oob_url')) ||
            (['error', 'info'].includes(this.message_type))
        ) {
            this.model.collection?.trigger('rendered', this.model);
        }
    }

    renderInfoMessage () {
        const isodate = dayjs(this.model.get('time')).toISOString();
        const i18n_retry = __('Retry');
        return html`
            <div class="message chat-info chat-${this.message_type}"
                data-isodate="${isodate}"
                data-type="${this.data_name}"
                data-value="${this.data_value}">

                <div class="chat-info__message">
                    ${ this.model.getMessageText() }
                </div>
                ${ this.reason ? html`<q class="reason">${this.reason}</q>` : `` }
                ${ this.error_text ? html`<q class="reason">${this.error_text}</q>` : `` }
                ${ this.allow_retry ? html`<a class="retry" @click=${this.onRetryClicked}>${i18n_retry}</a>` : '' }
            </div>
        `;
    }

    renderFileProgress () {
        const filename = this.model.file.name;
        const size = filesize(this.model.file.size);
        return html`
            <div class="message chat-msg">
                ${ renderAvatar(this.getAvatarData()) }
                <div class="chat-msg__content">
                    <span class="chat-msg__text">${i18n_uploading} <strong>${filename}</strong>, ${size}</span>
                    <progress value="${this.progress}"/>
                </div>
            </div>`;
    }

    renderChatMessage () {
        const is_groupchat_message = (this.message_type === 'groupchat');
        return html`
            ${ this.is_first_unread ? html`<div class="message date-separator"><hr class="separator"><span class="separator-text">${ i18n_new_messages }</span></div>` : '' }
            <div class="message chat-msg ${this.message_type} ${this.getExtraMessageClasses()}
                    ${ this.is_me_message ? 'chat-msg--action' : '' }
                    ${this.isFollowup() ? 'chat-msg--followup' : ''}"
                    data-isodate="${this.time}" data-msgid="${this.msgid}" data-from="${this.from}" data-encrypted="${this.is_encrypted}">

                ${ this.shouldShowAvatar() ? renderAvatar(this.getAvatarData()) : '' }
                <div class="chat-msg__content chat-msg__content--${this.sender} ${this.is_me_message ? 'chat-msg__content--action' : ''}">
                    <span class="chat-msg__heading">
                        ${ (this.is_me_message) ? html`
                            <time timestamp="${this.time}" class="chat-msg__time">${this.pretty_time}</time>
                            ${this.hats.map(hat => html`<span class="badge badge-secondary">${hat}</span>`)}
                        ` : '' }
                        <span class="chat-msg__author">${ this.is_me_message ? '**' : ''}${this.username}</span>
                        ${ !this.is_me_message ? this.renderAvatarByline() : '' }
                        ${ this.is_encrypted ? html`<span class="fa fa-lock"></span>` : '' }
                    </span>
                    <div class="chat-msg__body chat-msg__body--${this.message_type} ${this.received ? 'chat-msg__body--received' : '' } ${this.is_delayed ? 'chat-msg__body--delayed' : '' }">
                        <div class="chat-msg__message">
                            ${ this.is_retracted ? this.renderRetraction() : this.renderMessageText() }
                        </div>
                        ${ (this.received && !this.is_me_message && !is_groupchat_message) ? html`<span class="fa fa-check chat-msg__receipt"></span>` : '' }
                        ${ (this.edited) ? html`<i title="${ i18n_edited }" class="fa fa-edit chat-msg__edit-modal" @click=${this.showMessageVersionsModal}></i>` : '' }
                        <div class="chat-msg__actions">
                            ${ this.editable ?
                                    html`<button
                                        class="chat-msg__action chat-msg__action-edit"
                                        title="${i18n_edit_message}"
                                        @click=${this.onMessageEditButtonClicked}
                                    >
                                    <fa-icon class="fas fa-pencil-alt" path-prefix="dist" color="var(--text-color-lighten-15-percent)" size="1em"></fa-icon>
                                </button>` : '' }
                            ${ renderRetractionLink(this) }
                        </div>
                    </div>
                </div>
            </div>`;
    }

    shouldShowAvatar () {
        return api.settings.get('show_message_avatar') && !this.is_me_message && this.type !== 'headline';
    }

    getAvatarData () {
        const image_type = this.model.vcard.get('image_type');
        const image_data = this.model.vcard.get('image');
        const image = "data:" + image_type + ";base64," + image_data;
        return {
            'classes': 'chat-msg__avatar',
            'height': 36,
            'width': 36,
            image,
        };
    }

    async onRetryClicked () {
        this.show_spinner = true;
        await this.model.error.retry();
        this.model.destroy();
        this.parentElement.removeChild(this);
    }

    onMessageRetractButtonClicked (ev) {
        ev.preventDefault();
        this.chatview.onMessageRetractButtonClicked(this.model);
    }

    onMessageEditButtonClicked (ev) {
        ev.preventDefault();
        this.chatview.onMessageEditButtonClicked(this.model);
    }

    isFollowup () {
        const messages = this.model.collection.models;
        const idx = messages.indexOf(this.model);
        const prev_model = idx ? messages[idx-1] : null;
        if (prev_model === null) {
            return false;
        }
        const date = dayjs(this.time);
        return this.from === prev_model.get('from') &&
            !this.is_me_message &&
            !prev_model.isMeCommand() &&
            this.message_type !== 'info' &&
            prev_model.get('type') !== 'info' &&
            date.isBefore(dayjs(prev_model.get('time')).add(10, 'minutes')) &&
            this.is_encrypted === prev_model.get('is_encrypted');
    }


    getExtraMessageClasses () {
        const extra_classes = [
            ...(this.is_delayed ? ['delayed'] : []),
            ...(this.is_retracted ? ['chat-msg--retracted'] : [])
        ];
        if (this.message_type === 'groupchat') {
            this.occupant_role && extra_classes.push(this.occupant_role);
            this.occupant_affiliation && extra_classes.push(this.occupant_affiliation);
            if (this.sender === 'them' && this.has_mentions) {
                extra_classes.push('mentioned');
            }
        }
        this.correcting && extra_classes.push('correcting');
        return extra_classes.filter(c => c).join(" ");
    }

    getRetractionText () {
        if (this.message_type === 'groupchat' && this.moderated_by) {
            const retracted_by_mod = this.moderated_by;
            const chatbox = this.model.collection.chatbox;
            if (!this.model.mod) {
                this.model.mod =
                    chatbox.occupants.findOccupant({'jid': retracted_by_mod}) ||
                    chatbox.occupants.findOccupant({'nick': Strophe.getResourceFromJid(retracted_by_mod)});
            }
            const modname = this.model.mod ? this.model.mod.getDisplayName() : 'A moderator';
            return __('%1$s has removed this message', modname);
        } else {
            return __('%1$s has removed this message', this.model.getDisplayName());
        }
    }

    renderRetraction () {
        const retraction_text = this.is_retracted ? this.getRetractionText() : null;
        return html`
            <div>${retraction_text}</div>
            ${ this.moderation_reason ? html`<q class="chat-msg--retracted__reason">${this.moderation_reason}</q>` : '' }
        `;
    }

    renderMessageText () {
        const tpl_spoiler_hint = html`
            <div class="chat-msg__spoiler-hint">
                <span class="spoiler-hint">${this.spoiler_hint}</span>
                <a class="badge badge-info spoiler-toggle" href="#" @click=${this.toggleSpoilerMessage}>
                    <i class="fa ${this.is_spoiler_visible ? 'fa-eye-slash' : 'fa-eye'}"></i>
                    ${ this.is_spoiler_visible ? i18n_show_less : i18n_show }
                </a>
            </div>
        `;
        return html`
            ${ this.is_spoiler ? tpl_spoiler_hint : '' }
            ${ this.subject ? html`<div class="chat-msg__subject">${this.subject}</div>` : '' }
            <converse-chat-message-body
                .model="${this.model}"
                ?is_me_message="${this.is_me_message}"
                ?is_only_emojis="${this.is_only_emojis}"
                ?is_spoiler="${this.is_spoiler}"
                ?is_spoiler_visible="${this.is_spoiler_visible}"
                text="${this.model.getMessageText()}"></converse-chat-message-body>
            ${ this.oob_url ? html`<div class="chat-msg__media">${u.getOOBURLMarkup(_converse, this.oob_url)}</div>` : '' }
            <div class="chat-msg__error">${ this.error_text || this.error }</div>
        `;
    }

    renderAvatarByline () {
        return html`
            ${ this.hats.map(h => html`<span class="badge badge-secondary">${h.title}</span>`) }
            <time timestamp="${this.time}" class="chat-msg__time">${this.pretty_time}</time>
        `;
    }

    showMessageVersionsModal (ev) {
        ev.preventDefault();
        if (this.message_versions_modal === undefined) {
            this.message_versions_modal = new MessageVersionsModal({'model': this.model});
        }
        this.message_versions_modal.show(ev);
    }

    toggleSpoilerMessage (ev) {
        ev?.preventDefault();
        this.model.save({'is_spoiler_visible': !this.model.get('is_spoiler_visible')});
    }
}

customElements.define('converse-chat-message', Message);