/*
 * Copyright (C) 2017, David PHAM-VAN <dev.nfet.net@gmail.com>
 *
 * 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 'dart:io';
import 'dart:math' as math;
import 'dart:typed_data';

import 'package:test/test.dart';
import 'package:pdf/pdf.dart';
import 'package:pdf/widgets.dart';

Document pdf;
Font ttf;
Font ttfBold;

void main() {
  setUpAll(() {
    Document.debug = true;
    RichText.debug = true;
    final Uint8List fontData = File('open-sans.ttf').readAsBytesSync();
    ttf = Font.ttf(fontData.buffer.asByteData());
    final Uint8List fontDataBold = File('open-sans-bold.ttf').readAsBytesSync();
    ttfBold = Font.ttf(fontDataBold.buffer.asByteData());
    pdf = Document();
  });

  test('Text Widgets Quotes', () {
    pdf.addPage(Page(
        build: (Context context) => Text('Text containing \' or " works!')));
  });

  test('Text Widgets Unicode Quotes', () {
    pdf.addPage(Page(
        build: (Context context) => Text('Text containing ’ and ” works!',
            style: TextStyle(font: ttf))));
  });

  test('Text Widgets softWrap', () {
    pdf.addPage(MultiPage(
        build: (Context context) => <Widget>[
              Text(
                'Text with\nsoft wrap\nenabled',
                softWrap: true,
              ),
              Text(
                'Text with\nsoft wrap\ndisabled',
                softWrap: false,
              ),
            ]));
  });

  test('Text Widgets Alignement', () {
    final String para = LoremText().paragraph(40);

    final List<Widget> widgets = <Widget>[];
    for (TextAlign align in TextAlign.values) {
      widgets.add(
        Text(
          '$align:\n' + para,
          textAlign: align,
          softWrap: true,
        ),
      );
    }

    pdf.addPage(MultiPage(build: (Context context) => widgets));
  });

  test('Text Widgets lineSpacing', () {
    final String para = LoremText().paragraph(40);

    final List<Widget> widgets = <Widget>[];
    for (double spacing = 0.0; spacing < 10.0; spacing += 2.0) {
      widgets.add(
        Text(para, style: TextStyle(font: ttf, lineSpacing: spacing)),
      );
      widgets.add(
        SizedBox(height: 30),
      );
    }

    pdf.addPage(MultiPage(build: (Context context) => widgets));
  });

  test('Text Widgets wordSpacing', () {
    final String para = LoremText().paragraph(40);

    final List<Widget> widgets = <Widget>[];
    for (double spacing = 0.0; spacing < 10.0; spacing += 2.0) {
      widgets.add(
        Text(para, style: TextStyle(font: ttf, wordSpacing: spacing)),
      );
      widgets.add(
        SizedBox(height: 30),
      );
    }

    pdf.addPage(MultiPage(build: (Context context) => widgets));
  });

  test('Text Widgets letterSpacing', () {
    final String para = LoremText().paragraph(40);

    final List<Widget> widgets = <Widget>[];
    for (double spacing = 0.0; spacing < 10.0; spacing += 2.0) {
      widgets.add(
        Text(para, style: TextStyle(font: ttf, letterSpacing: spacing)),
      );
      widgets.add(
        SizedBox(height: 30),
      );
    }

    pdf.addPage(MultiPage(build: (Context context) => widgets));
  });

  test('Text Widgets background', () {
    final String para = LoremText().paragraph(40);
    pdf.addPage(MultiPage(
        build: (Context context) => <Widget>[
              Text(
                para,
                style: TextStyle(
                  font: ttf,
                  background: PdfColors.purple50,
                ),
              ),
            ]));
  });

  test('Text Widgets RichText', () {
    final math.Random rnd = math.Random(42);
    final String para = LoremText(random: rnd).paragraph(40);

    final List<TextSpan> spans = <TextSpan>[];
    for (String word in para.split(' ')) {
      spans.add(
        TextSpan(
          text: '$word',
          style: TextStyle(
              font: ttf,
              fontSize: rnd.nextDouble() * 20 + 20,
              color:
                  PdfColors.primaries[rnd.nextInt(PdfColors.primaries.length)]),
        ),
      );
      spans.add(const TextSpan(text: ' '));
    }

    pdf.addPage(MultiPage(
        build: (Context context) => <Widget>[
              RichText(
                text: TextSpan(
                  text: 'Hello ',
                  style: TextStyle(
                    font: ttf,
                    fontSize: 20,
                  ),
                  children: <InlineSpan>[
                    TextSpan(
                        text: 'bold',
                        style: TextStyle(
                            font: ttfBold, fontSize: 40, color: PdfColors.blue),
                        children: <InlineSpan>[
                          const TextSpan(text: '*', baseline: 20),
                          WidgetSpan(child: PdfLogo(), baseline: -10),
                        ]),
                    TextSpan(
                      text: ' world!\n',
                      children: spans,
                    ),
                    WidgetSpan(
                        child: PdfLogo(),
                        annotation: AnnotationUrl(
                          'https://github.com/DavBfr/dart_pdf',
                        )),
                  ],
                ),
              ),
            ]));
  });

  tearDownAll(() {
    final File file = File('widgets-text.pdf');
    file.writeAsBytesSync(pdf.save());
  });
}