import { filter, reduce, find } from 'lodash';
import { computed } from 'mobx';

export default class Info {
    constructor(query) {
        this.query = query;
    }

    @computed get syncUrl() {
        return this.query.customSyncUrl || this.query.src.syncUrl;
    }

    @computed get minWidth() {
        return reduce(this.visibleFields, (sum, f) => sum + f.width, 0);
    }

    // the index of fields marked as visible
    @computed get visibleIndexes() {
        const indexes = [];
        this.query.fields.forEach((f, i) => { if (f.visible) { indexes.push(i); } });
        return indexes;
    }

    @computed get visibleFields() {
        return filter(this.query.fields, 'visible');
    }

    @computed get queryableFields() {
        return filter(this.query.fields, 'queryable');
    }

    @computed get visibleClauses() {
        return filter(this.query.clauses, 'visible');
    }

    @computed get loadableFields() {
        return filter(this.query.fields, 'loadable');
    }

    @computed get identifierField() {
        const property = this.query.src.identifierFieldName;
        return find(this.query.fields, { id: property });
    }
}