'use strict';

const events = require('../events.js');
const api = require('../api.js');
const views = require('../util/views.js');
const TagAutoCompleteControl =
    require('../controls/tag_auto_complete_control.js');

const template = views.getTemplate('tag-merge');

class TagMergeView extends events.EventTarget {
    constructor(ctx) {
        super();

        this._tag = ctx.tag;
        this._hostNode = ctx.hostNode;
        ctx.tagNamePattern = api.getTagNameRegex();
        views.replaceContent(this._hostNode, template(ctx));

        views.decorateValidator(this._formNode);
        if (this._targetTagFieldNode) {
            this._autoCompleteControl = new TagAutoCompleteControl(
                this._targetTagFieldNode,
                {
                    confirm: tag =>
                        this._autoCompleteControl.replaceSelectedText(
                            tag.names[0], false),
                });
        }

        this._formNode.addEventListener('submit', e => this._evtSubmit(e));
    }

    clearMessages() {
        views.clearMessages(this._hostNode);
    }

    enableForm() {
        views.enableForm(this._formNode);
    }

    disableForm() {
        views.disableForm(this._formNode);
    }

    showSuccess(message) {
        views.showSuccess(this._hostNode, message);
    }

    showError(message) {
        views.showError(this._hostNode, message);
    }

    _evtSubmit(e) {
        e.preventDefault();
        this.dispatchEvent(new CustomEvent('submit', {
            detail: {
                tag: this._tag,
                targetTagName: this._targetTagFieldNode.value,
                addAlias: this._addAliasCheckboxNode.checked,
            },
        }));
    }

    get _formNode() {
        return this._hostNode.querySelector('form');
    }

    get _targetTagFieldNode() {
        return this._formNode.querySelector('input[name=target-tag]');
    }

    get _addAliasCheckboxNode() {
        return this._formNode.querySelector('input[name=alias]');
    }
}

module.exports = TagMergeView;
