/**
 * @license
 * Copyright 2018 JBoss Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import {Component, Input, OnChanges, SimpleChanges, ViewEncapsulation} from "@angular/core";

@Component({
    selector: "json-summary",
    template: `<span class="json-summary" [textContent]="convertedData" [class.empty]="isEmpty()"></span>`,
    encapsulation: ViewEncapsulation.None
})
export class JsonSummaryComponent implements OnChanges {
    @Input("data")
    data: unknown;
    @Input("emptyText")
    emptyText: string = "No value.";

    convertedData: string;

    ngOnChanges(changes: SimpleChanges): void {
        if (this.isEmpty()) {
            this.convertedData = this.emptyText;
        } else if (typeof this.data === "string") {
            // Keep plain strings unquoted so example summaries match what users type in the UI.
            this.convertedData = this.data;
        } else {
            this.convertedData = JSON.stringify(this.data);
        }
    }

    public isEmpty(): boolean {
        return this.data === null || this.data === undefined;
    }

}
