part of 'settings_page.dart';

class AboutSettings extends StatefulWidget {
  const AboutSettings({super.key});

  @override
  State<AboutSettings> createState() => _AboutSettingsState();
}

class _AboutSettingsState extends State<AboutSettings> {
  bool isCheckingUpdate = false;

  @override
  Widget build(BuildContext context) {
    return SmoothCustomScrollView(
      slivers: [
        SliverAppbar(title: Text("About".tl)),
        SizedBox(
          height: 136,
          width: double.infinity,
          child: Center(
            child: Container(
              width: 136,
              height: 136,
              decoration: BoxDecoration(
                borderRadius: BorderRadius.circular(136),
              ),
              clipBehavior: Clip.antiAlias,
              child: const Image(
                image: AssetImage("assets/app_icon.png"),
                filterQuality: FilterQuality.medium,
              ),
            ),
          ),
        ).paddingTop(16).toSliver(),
        Column(
          children: [
            const SizedBox(height: 8),
            Text(
              "V${App.version}",
              style: const TextStyle(fontSize: 16),
            ),
            Text("Venera is a free and open-source app for comic reading.".tl),
            const SizedBox(height: 8),
          ],
        ).toSliver(),
        ListTile(
          title: Text("Check for updates".tl),
          trailing: Button.filled(
            isLoading: isCheckingUpdate,
            child: Text("Check".tl),
            onPressed: () {
              setState(() {
                isCheckingUpdate = true;
              });
              checkUpdateUi().then((value) {
                setState(() {
                  isCheckingUpdate = false;
                });
              });
            },
          ).fixHeight(32),
        ).toSliver(),
        ListTile(
          title: const Text("Github"),
          trailing: const Icon(Icons.open_in_new),
          onTap: () {
            launchUrlString("https://github.com/venera-app/venera");
          },
        ).toSliver(),
      ],
    );
  }
}

Future<bool> checkUpdate() async {
  var res = await AppDio().get(
      "https://raw.githubusercontent.com/venera-app/venera/refs/heads/master/pubspec.yaml");
  if (res.statusCode == 200) {
    var data = loadYaml(res.data);
    if (data["version"] != null) {
      return _compareVersion(data["version"].split("+")[0], App.version);
    }
  }
  return false;
}

Future<void> checkUpdateUi([bool showMessageIfNoUpdate = true]) async {
  var value = await checkUpdate();
  if (value) {
    showDialog(
        context: App.rootContext,
        builder: (context) {
          return ContentDialog(
            title: "New version available".tl,
            content: Text(
                "A new version is available. Do you want to update now?".tl),
            actions: [
              Button.text(
                onPressed: () {
                  Navigator.pop(context);
                  launchUrlString(
                      "https://github.com/venera-app/venera/releases");
                },
                child: Text("Update".tl),
              ),
            ],
          );
        });
  } else if (showMessageIfNoUpdate) {
    App.rootContext.showMessage(message: "No new version available".tl);
  }
}

/// return true if version1 > version2
bool _compareVersion(String version1, String version2) {
  var v1 = version1.split(".");
  var v2 = version2.split(".");
  for (var i = 0; i < v1.length; i++) {
    if (int.parse(v1[i]) > int.parse(v2[i])) {
      return true;
    }
  }
  return false;
}