MOBILE-3585 pipe: Implement seconds to HMS pipe

src/app/pipes/pipes.module.ts

@@ -16,6 +16,7 @@ import { NgModule } from '@angular/core';
 import { CoreCreateLinksPipe } from './create-links.pipe';
 import { CoreFormatDatePipe } from './format-date.pipe';
 import { CoreNoTagsPipe } from './no-tags.pipe';
+import { CoreSecondsToHMSPipe } from './seconds-to-hms.pipe';
 import { CoreTimeAgoPipe } from './time-ago.pipe';
 import { CoreBytesToSizePipe } from './bytes-to-size.pipe';
 
@@ -26,6 +27,7 @@ import { CoreBytesToSizePipe } from './bytes-to-size.pipe';
         CoreTimeAgoPipe,
         CoreFormatDatePipe,
         CoreBytesToSizePipe,
+        CoreSecondsToHMSPipe,
     ],
     imports: [],
     exports: [
@@ -34,6 +36,7 @@ import { CoreBytesToSizePipe } from './bytes-to-size.pipe';
         CoreTimeAgoPipe,
         CoreFormatDatePipe,
         CoreBytesToSizePipe,
+        CoreSecondsToHMSPipe,
     ],
 })
 export class CorePipesModule {}

src/app/pipes/seconds-to-hms.pipe.ts

@@ -0,0 +1,69 @@
+// (C) Copyright 2015 Moodle Pty Ltd.
+//
+// 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 { Pipe, PipeTransform } from '@angular/core';
+
+import { CoreTextUtils } from '@services/utils/text';
+import { CoreLogger } from '@singletons/logger';
+import { CoreConstants } from '@core/constants';
+
+/**
+ * Pipe to convert a number of seconds to Hours:Minutes:Seconds.
+ *
+ * This converts a number of seconds to Hours:Minutes:Seconds. If the number of seconds is negative, returns 00:00:00.
+ */
+@Pipe({
+    name: 'coreSecondsToHMS',
+})
+export class CoreSecondsToHMSPipe implements PipeTransform {
+
+    protected logger: CoreLogger;
+
+    constructor() {
+        this.logger = CoreLogger.getInstance('CoreSecondsToHMSPipe');
+    }
+
+    /**
+     * Convert a number of seconds to Hours:Minutes:Seconds.
+     *
+     * @param seconds Number of seconds.
+     * @return Formatted seconds.
+     */
+    transform(seconds: string | number): string {
+        if (!seconds || seconds < 0) {
+            seconds = 0;
+        } else if (typeof seconds == 'string') {
+            // Convert the value to a number.
+            const numberSeconds = parseInt(seconds, 10);
+            if (isNaN(numberSeconds)) {
+                this.logger.error('Invalid value received', seconds);
+
+                return seconds;
+            }
+            seconds = numberSeconds;
+        }
+
+        // Don't allow decimals.
+        seconds = Math.floor(seconds);
+
+        const hours = Math.floor(seconds / CoreConstants.SECONDS_HOUR);
+        seconds -= hours * CoreConstants.SECONDS_HOUR;
+        const minutes = Math.floor(seconds / CoreConstants.SECONDS_MINUTE);
+        seconds -= minutes * CoreConstants.SECONDS_MINUTE;
+
+        return CoreTextUtils.instance.twoDigits(hours) + ':' + CoreTextUtils.instance.twoDigits(minutes) + ':' +
+            CoreTextUtils.instance.twoDigits(seconds);
+    }
+
+}