import 'package:flutter/material.dart';
import '../about/internal/application/TextType.dart';

import '../about/internal/application/DeploymentRecord.dart';
import '../utils/Colors.dart';
import 'text/Text.dart';
import '../utils/CommonUtils.dart';

/// Deployment metrics: success-rate ring plus stat tiles.
class MetricsPanel extends StatelessWidget {
  final List<DeploymentRecord> history;
  const MetricsPanel({super.key, required this.history});

  @override
  Widget build(BuildContext context) {
    final jp = context.jp;
    final total = history.length;
    final success = history
        .where((h) => h.status == DeployStatus.success)
        .length;
    final failed = history
        .where((h) => h.status == DeployStatus.failure)
        .length;
    final reverted = history
        .where((h) => h.status == DeployStatus.reverted)
        .length;
    final attempts = success + failed;
    final rate = attempts == 0 ? 0.0 : success / attempts;
    final last = history.isNotEmpty ? history.first : null;

    return Container(
      padding: const EdgeInsets.all(16),
      decoration: PeachTheme.panel(context, glowColor: PeachTheme.seed),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          text(
            'METRICS',
            12,
            TextType.Regular,
            color: jp.textDim,
            letterSpacing: 1.2,
            weight: FontWeight.w700,
          ),
          const SizedBox(height: 14),
          Row(
            children: [
              _rateRing(jp, rate, attempts),
              const SizedBox(width: 18),
              Expanded(
                child: Wrap(
                  spacing: 10,
                  runSpacing: 10,
                  children: [
                    _tile(jp, 'Total', '$total', jp.text),
                    _tile(jp, 'Success', '$success', PeachTheme.seed),
                    _tile(jp, 'Failed', '$failed', PeachTheme.danger),
                    _tile(jp, 'Reverted', '$reverted', PeachTheme.warn),
                  ],
                ),
              ),
            ],
          ),
          if (last != null) ...[
            const SizedBox(height: 14),
            Divider(height: 1, color: jp.border),
            const SizedBox(height: 12),
            Row(
              children: [
                Icon(Icons.schedule, size: 14, color: jp.textFaint),
                const SizedBox(width: 6),
                Expanded(
                  child: text(
                    'Last: ${last.serverName} · ${last.serviceLabel} · ${timeAgo(last.time)}',
                    12.5,
                    TextType.Regular,
                    color: jp.textDim,
                    overflow: TextOverflow.ellipsis,
                    weight: FontWeight.w400,
                  ),
                ),
                _statusDot(last.status),
              ],
            ),
          ],
        ],
      ),
    );
  }

  Widget _rateRing(JpColors jp, double rate, int attempts) {
    final pct = (rate * 100).round();
    final color = rate >= 0.8
        ? PeachTheme.seed
        : rate >= 0.5
        ? PeachTheme.warn
        : PeachTheme.danger;
    return SizedBox(
      width: 84,
      height: 84,
      child: Stack(
        alignment: Alignment.center,
        children: [
          SizedBox(
            width: 84,
            height: 84,
            child: CircularProgressIndicator(
              value: attempts == 0 ? 0 : rate,
              strokeWidth: 8,
              backgroundColor: jp.surface2,
              valueColor: AlwaysStoppedAnimation(color),
              strokeCap: StrokeCap.round,
            ),
          ),
          Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              text(
                attempts == 0 ? '—' : '$pct%',
                20,
                TextType.Regular,
                color: color,
                weight: FontWeight.w800,
              ),
              text(
                'SUCCESS',
                8,
                TextType.Regular,
                color: jp.textFaint,
                letterSpacing: 1,
                weight: FontWeight.w700,
              ),
            ],
          ),
        ],
      ),
    );
  }

  Widget _tile(JpColors jp, String label, String value, Color color) {
    return Container(
      width: 92,
      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 10),
      decoration: BoxDecoration(
        color: jp.bg.withValues(alpha: 0.5),
        borderRadius: BorderRadius.circular(12),
        border: Border.all(color: jp.border),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          text(
            value,
            20,
            TextType.Regular,
            color: color,
            weight: FontWeight.w800,
          ),
          text(
            label.toUpperCase(),
            9,
            TextType.Regular,
            color: jp.textFaint,
            letterSpacing: 0.8,
            weight: FontWeight.w700,
          ),
        ],
      ),
    );
  }

  Widget _statusDot(DeployStatus s) {
    final color = switch (s) {
      DeployStatus.success => PeachTheme.seed,
      DeployStatus.failure => PeachTheme.danger,
      DeployStatus.reverted => PeachTheme.warn,
    };
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
      decoration: BoxDecoration(
        color: color.withValues(alpha: 0.16),
        borderRadius: BorderRadius.circular(20),
      ),
      child: text(
        s.label,
        10,
        TextType.Regular,
        color: color,
        weight: FontWeight.w700,
      ),
    );
  }
}