part of 'sync_settings_screen.dart';

/// The two sections the screen composes.
///
/// Split from sync_settings_screen.dart for the 250-line cap;
/// a `part` rather than an import because both sections are
/// library-private and could not be imported at all.
class _FirebaseSection extends StatelessWidget {
  const _FirebaseSection({
    required this.connected,
    required this.busy,
    required this.googleAvailable,
    required this.googleUnavailableReason,
    required this.emailController,
    required this.passwordController,
    required this.onConnectPassword,
    required this.onConnectGoogle,
    required this.onDisconnect,
  });

  final bool connected;
  final bool busy;
  final bool googleAvailable;
  final String? googleUnavailableReason;
  final TextEditingController emailController;
  final TextEditingController passwordController;
  final VoidCallback onConnectPassword;
  final VoidCallback onConnectGoogle;
  final VoidCallback onDisconnect;

  @override
  Widget build(BuildContext context) {
    if (connected) {
      return Row(
        children: [
          const Icon(Icons.cloud_done, size: 20),
          const SizedBox(width: 8),
          Expanded(child: Text(emailController.text)),
          TextButton(
            onPressed: busy ? null : onDisconnect,
            child: const Text('Disconnect'),
          ),
        ],
      );
    }
    return Column(
      crossAxisAlignment: CrossAxisAlignment.stretch,
      children: [
        if (googleAvailable) ...[
          Align(
            alignment: Alignment.centerLeft,
            child: FilledButton.icon(
              onPressed: busy ? null : onConnectGoogle,
              icon: const Icon(Icons.account_circle),
              label: const Text('Sign in with Google'),
            ),
          ),
          const SizedBox(height: 12),
        ] else if (googleUnavailableReason != null) ...[
          // Disabled, not hidden. A null onPressed cannot be tapped, so this
          // is not the "control that can never succeed" trap -- that one
          // looks live and reports a fake cancellation. This one says why,
          // which beats a screen that silently offers less on one platform.
          Align(
            alignment: Alignment.centerLeft,
            child: FilledButton.icon(
              onPressed: null,
              icon: const Icon(Icons.account_circle),
              label: const Text('Sign in with Google'),
            ),
          ),
          const SizedBox(height: 4),
          Text(
            googleUnavailableReason!,
            style: Theme.of(context).textTheme.bodySmall,
          ),
          const SizedBox(height: 12),
        ],
        ExpansionTile(
          initiallyExpanded: !googleAvailable,
          title: const Text('Use the account password instead'),
          tilePadding: EdgeInsets.zero,
          childrenPadding: const EdgeInsets.only(bottom: 8),
          children: [
            TextField(
              controller: emailController,
              keyboardType: TextInputType.emailAddress,
              autocorrect: false,
              decoration: const InputDecoration(
                labelText: 'Sync account email',
                border: OutlineInputBorder(),
              ),
            ),
            const SizedBox(height: 12),
            TextField(
              controller: passwordController,
              obscureText: true,
              autocorrect: false,
              decoration: const InputDecoration(
                labelText: 'Sync account password',
                border: OutlineInputBorder(),
              ),
            ),
            const SizedBox(height: 12),
            Align(
              alignment: Alignment.centerLeft,
              child: FilledButton.icon(
                onPressed: busy ? null : onConnectPassword,
                icon: const Icon(Icons.cloud_done),
                label: const Text('Connect Firebase'),
              ),
            ),
          ],
        ),
      ],
    );
  }
}

class _BackupSection extends StatelessWidget {
  const _BackupSection({
    required this.backup,
    required this.onExport,
    required this.onImport,
  });

  final BackupSlot backup;
  final VoidCallback onExport;
  final VoidCallback onImport;

  @override
  Widget build(BuildContext context) {
    return Row(
      children: [
        Expanded(
          child: OutlinedButton.icon(
            onPressed: onExport,
            icon: const Icon(Icons.upload),
            label: Text('Export ${backup.label}'),
          ),
        ),
        const SizedBox(width: 12),
        Expanded(
          child: OutlinedButton.icon(
            onPressed: onImport,
            icon: const Icon(Icons.download),
            label: Text('Import ${backup.label}'),
          ),
        ),
      ],
    );
  }
}