import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';

import '../i18n/strings.g.dart';
import '../services/onboarding_store.dart';
import '../services/sharing_switch.dart';
import 'theme.dart';

/// Makes sure the community rules have been accepted once before the user
/// joins the market or publishes anything. Returns true when the rules are
/// (or become) accepted; false when the user declines. Play/App Store UGC
/// policies require this acceptance before content can be created.
///
/// This is also where Tane goes online for the first time: agreeing here is the
/// opt-in that turns [sharing] on. Keeping both in one step means there is a
/// single moment where someone says yes, and it is a moment that explains
/// itself — rather than a connection that happened at launch without asking.
Future<bool> ensureMarketRulesAccepted(
  BuildContext context,
  OnboardingStore store, {
  SharingSwitch? sharing,
}) async {
  if (await store.marketRulesAccepted()) {
    // Already agreed, but sharing may still be off (they turned it off in the
    // sharing setup, or agreed on a build that had no switch): honour the ask.
    if (sharing != null && !sharing.on.value) await sharing.enable();
    return true;
  }
  if (!context.mounted) return false;
  final accepted = await showModalBottomSheet<bool>(
    context: context,
    isScrollControlled: true,
    isDismissible: false,
    enableDrag: false,
    builder: (_) => const MarketGateSheet(),
  );
  if (accepted == true) {
    await store.markMarketRulesAccepted();
    await sharing?.enable();
    return true;
  }
  return false;
}

/// The one-time "before you join the market" sheet: the community rules in
/// a few bullets, the publish-is-public note, and a link to the full texts.
class MarketGateSheet extends StatelessWidget {
  const MarketGateSheet({super.key});

  @override
  Widget build(BuildContext context) {
    final t = context.t;
    final theme = Theme.of(context);
    return SafeArea(
      child: SingleChildScrollView(
        padding: EdgeInsets.only(
          left: 20,
          right: 20,
          top: 24,
          bottom: 16 + MediaQuery.of(context).viewInsets.bottom,
        ),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          mainAxisSize: MainAxisSize.min,
          children: [
            Text(
              t.marketGate.title,
              style: theme.textTheme.titleLarge?.copyWith(
                color: seedOnSurface,
                fontWeight: FontWeight.w600,
              ),
            ),
            const SizedBox(height: 12),
            Text(
              t.marketGate.intro,
              style: theme.textTheme.bodyMedium?.copyWith(
                color: seedOnSurface,
                height: 1.4,
              ),
            ),
            const SizedBox(height: 12),
            _Rule(t.marketGate.ruleHonest),
            _Rule(t.marketGate.ruleLegal),
            _Rule(t.marketGate.ruleRespect),
            const SizedBox(height: 12),
            Text(
              t.marketGate.publicNote,
              style: theme.textTheme.bodySmall?.copyWith(
                color: seedMuted,
                height: 1.4,
              ),
            ),
            const SizedBox(height: 8),
            Text(
              t.marketGate.networkNote,
              style: theme.textTheme.bodySmall?.copyWith(
                color: seedMuted,
                height: 1.4,
              ),
            ),
            TextButton.icon(
              style: TextButton.styleFrom(
                padding: EdgeInsets.zero,
                foregroundColor: seedGreen,
              ),
              icon: const Icon(Icons.privacy_tip_outlined, size: 16),
              label: Text(t.marketGate.viewLegal),
              onPressed: () => context.push('/legal'),
            ),
            const SizedBox(height: 8),
            Row(
              mainAxisAlignment: MainAxisAlignment.end,
              children: [
                TextButton(
                  onPressed: () => Navigator.of(context).pop(false),
                  child: Text(t.marketGate.decline),
                ),
                const SizedBox(width: 8),
                FilledButton(
                  onPressed: () => Navigator.of(context).pop(true),
                  child: Text(t.marketGate.accept),
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }
}

class _Rule extends StatelessWidget {
  const _Rule(this.text);

  final String text;

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsetsDirectional.only(bottom: 8),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          const Icon(Icons.check_circle_outline, size: 18, color: seedGreen),
          const SizedBox(width: 8),
          Expanded(
            child: Text(
              text,
              style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                color: seedOnSurface,
                height: 1.35,
              ),
            ),
          ),
        ],
      ),
    );
  }
}