import linkService from "../../services/link.js";
import server from "../../services/server.js";
import froca from "../../services/froca.js";
import NoteContextAwareWidget from "../note_context_aware_widget.js";

const TPL = `
<div class="similar-notes-widget">
    <style>    
    .similar-notes-wrapper {
        max-height: 200px;
        overflow: auto;
        padding: 12px;
    }

    .similar-notes-wrapper a {
        display: inline-block;
        border: 1px dotted var(--main-border-color);
        border-radius: 20px;
        background-color: var(--accented-background-color);
        padding: 0 10px 0 10px;
        margin: 0 3px 0 3px;
        max-width: 10em;
        text-overflow: ellipsis;
        white-space: nowrap;
        overflow: hidden;
    }
    </style>

    <div class="similar-notes-wrapper"></div>
</div>
`;

export default class SimilarNotesWidget extends NoteContextAwareWidget {
    get name() {
        return "similarNotes";
    }

    isEnabled() {
        return super.isEnabled()
            && this.note.type !== 'search'
            && !this.note.hasLabel('similarNotesWidgetDisabled');
    }

    getTitle() {
        return {
            show: this.isEnabled(),
            title: 'Similar Notes',
            icon: 'bx bx-bar-chart'
        };
    }

    doRender() {
        this.$widget = $(TPL);
        this.contentSized();

        this.$similarNotesWrapper = this.$widget.find(".similar-notes-wrapper");
    }

    async refreshWithNote() {
        // remember which title was when we found the similar notes
        this.title = this.note.title;

        const similarNotes = await server.get('similar-notes/' + this.noteId);

        if (similarNotes.length === 0) {
            this.$similarNotesWrapper.empty().append("No similar notes found.");

            return;
        }

        const noteIds = similarNotes.flatMap(note => note.notePath);

        await froca.getNotes(noteIds, true); // preload all at once

        const $list = $('<div>');

        for (const similarNote of similarNotes) {
            const note = await froca.getNote(similarNote.noteId, true);

            if (!note) {
                continue;
            }

            const $item = (await linkService.createNoteLink(similarNote.notePath.join("/")))
                .css("font-size", 24 * (1 - 1 / (1 +  similarNote.score)));

            $list.append($item);
        }

        this.$similarNotesWrapper.empty().append($list);
    }

    entitiesReloadedEvent({loadResults}) {
        if (this.note && this.title !== this.note.title) {
            this.rendered = false;

            this.refresh();
        }
    }
}