import 'package:flutter/material.dart' hide StepState;

import '../about/internal/application/StepTracker.dart';
import '../about/internal/application/TextType.dart';
import '../utils/Colors.dart';
import 'text/Text.dart';

/// Renders an ordered list of deploy/build steps with live state and, for the
/// active step, an inline progress bar.
class StepList extends StatelessWidget {
  final List<DeployStep> steps;
  const StepList({super.key, required this.steps});

  @override
  Widget build(BuildContext context) {
    final jp = context.jp;
    final doneCount = steps.where((s) => s.state == StepState.done).length;
    return Container(
      padding: const EdgeInsets.fromLTRB(16, 14, 16, 14),
      decoration: PeachTheme.panel(context, glowColor: PeachTheme.seed),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            children: [
              text(
                'PROGRESS',
                12,
                TextType.Regular,
                color: jp.textDim,
                letterSpacing: 1.2,
                weight: FontWeight.w700,
              ),
              const Spacer(),
              text(
                '$doneCount / ${steps.length}',
                12,
                TextType.Regular,
                color: PeachTheme.seed,
                weight: FontWeight.w700,
              ),
            ],
          ),
          const SizedBox(height: 10),
          for (var i = 0; i < steps.length; i++)
            _StepRow(step: steps[i], isLast: i == steps.length - 1, jp: jp),
        ],
      ),
    );
  }
}

class _StepRow extends StatelessWidget {
  final DeployStep step;
  final bool isLast;
  final JpColors jp;
  const _StepRow({required this.step, required this.isLast, required this.jp});

  @override
  Widget build(BuildContext context) {
    final active = step.state == StepState.active;
    final (color, icon) = switch (step.state) {
      StepState.done => (PeachTheme.seed, Icons.check),
      StepState.active => (PeachTheme.seed, Icons.autorenew),
      StepState.failed => (PeachTheme.danger, Icons.close),
      StepState.skipped => (jp.textFaint, Icons.remove),
      StepState.pending => (jp.textFaint, Icons.circle_outlined),
    };
    final pct = step.progress == null
        ? null
        : (step.progress! * 100).clamp(0, 100).toStringAsFixed(0);
    return IntrinsicHeight(
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Column(
            children: [
              _dot(color, icon, active),
              if (!isLast)
                Expanded(
                  child: Container(
                    width: 2,
                    margin: const EdgeInsets.symmetric(vertical: 2),
                    color: step.state == StepState.done
                        ? PeachTheme.seed.withValues(alpha: 0.4)
                        : jp.border,
                  ),
                ),
            ],
          ),
          const SizedBox(width: 12),
          Expanded(
            child: Padding(
              padding: EdgeInsets.only(bottom: isLast ? 0 : 14, top: 2),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Row(
                    children: [
                      Expanded(
                        child: text(
                          step.label,
                          13.5,
                          TextType.Regular,
                          color: step.state == StepState.pending
                              ? jp.textFaint
                              : jp.text,
                          weight: active ? FontWeight.w700 : FontWeight.w500,
                        ),
                      ),
                      if (pct != null && active)
                        text(
                          '$pct%',
                          12,
                          TextType.Regular,
                          color: PeachTheme.seed,
                          weight: FontWeight.w700,
                        ),
                    ],
                  ),
                  if (active && step.progress != null) ...[
                    const SizedBox(height: 6),
                    ClipRRect(
                      borderRadius: BorderRadius.circular(4),
                      child: LinearProgressIndicator(
                        value: step.progress,
                        minHeight: 5,
                        backgroundColor: jp.surface2,
                      ),
                    ),
                  ],
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }

  Widget _dot(Color color, IconData icon, bool active) {
    return Container(
      width: 26,
      height: 26,
      decoration: BoxDecoration(
        color: color.withValues(alpha: active ? 0.18 : 0.12),
        shape: BoxShape.circle,
        border: Border.all(color: color.withValues(alpha: 0.6)),
      ),
      child: active
          ? const Padding(
              padding: EdgeInsets.all(5),
              child: CircularProgressIndicator(
                strokeWidth: 2,
                color: PeachTheme.seed,
              ),
            )
          : Icon(icon, size: 15, color: color),
    );
  }
}