// Regenerates lib/widgets/src/icons/phosphor_glyphs.g.dart from the Phosphor
// glyph table. Run from the repo root:
//
//   dart run tool/gen_phosphor_glyphs.dart
//
// Source of truth is the glyph table shipped with the ui-design skill — each
// row is `| `0xNNNN` | kebab-name | PascalName |  |`. We keep only the codepoint
// + the exact kebab-case upstream name, which is what code references via
// PhosphorIcons.byName('…'). No Flutter imports — plain Dart, runnable with
// `dart run`.
import 'dart:io';

const _src = '.claude/skills/ui-design/references/phosphor-glyphs.md';
const _out = 'lib/widgets/src/icons/phosphor_glyphs.g.dart';

void main() {
  final rows = File(_src).readAsLinesSync();
  // `| `0xe24a` | folder | Folder |  |`
  final re = RegExp(r'^\|\s*`(0x[0-9a-fA-F]+)`\s*\|\s*([a-z0-9-]+)\s*\|');
  final glyphs = <String, int>{};
  for (final line in rows) {
    final m = re.firstMatch(line);
    if (m == null) continue;
    final code = int.parse(m.group(1)!.substring(2), radix: 16);
    glyphs[m.group(2)!] = code;
  }
  if (glyphs.length < 1000) {
    stderr.writeln('refusing to write: only ${glyphs.length} glyphs parsed from $_src');
    exit(1);
  }
  final names = glyphs.keys.toList()..sort();
  final b = StringBuffer()
    ..writeln('// GENERATED by tool/gen_phosphor_glyphs.dart — do not edit by hand.')
    ..writeln('// Source: $_src (${glyphs.length} glyphs).')
    ..writeln('//')
    ..writeln('// The single label→codepoint lookup for the bundled Phosphor font. Code')
    ..writeln('// references glyphs by their exact kebab-case name via PhosphorIcons.byName;')
    ..writeln('// raw codepoints live only here.')
    ..writeln('library;')
    ..writeln()
    ..writeln('const Map<String, int> kPhosphorGlyphs = {');
  for (final n in names) {
    b.writeln("  '$n': 0x${glyphs[n]!.toRadixString(16)},");
  }
  b.writeln('};');
  File(_out).writeAsStringSync(b.toString());
  stdout.writeln('wrote $_out with ${glyphs.length} glyphs');
}