import 'seed_glyph.dart';

/// A profile avatar is carried in one string (stored locally and published as
/// the NIP-01 kind:0 `picture`), in one of three shapes:
///  - `data:image/jpeg;base64,…` — a tiny photo thumbnail (rides inline, no
///    media server, like offer photos);
///  - `tane:seed:<name>` — one of our own seed illustrations (for people who'd
///    rather not put a real photo — pseudonymity stays the default);
///  - empty — the deterministic coloured disc with the name's initial.
const avatarGlyphPrefix = 'tane:seed:';

/// The seed illustrations offered as ready-made avatars. Names are the stable
/// storage key (appended to [avatarGlyphPrefix]); the glyphs already ship in
/// [SeedGlyphs]. Order is the picker order.
const avatarGlyphNames = <String>[
  'jars',
  'sack',
  'jar',
  'scattered',
  'pouring',
  'mug',
  'bigSpoon',
  'smallSpoon',
];

/// The glyph char for an avatar illustration [name], or null if unknown.
String? avatarGlyphChar(String name) => switch (name) {
      'jars' => SeedGlyphs.jars,
      'sack' => SeedGlyphs.sack,
      'jar' => SeedGlyphs.jar,
      'scattered' => SeedGlyphs.scattered,
      'pouring' => SeedGlyphs.pouring,
      'mug' => SeedGlyphs.mug,
      'bigSpoon' => SeedGlyphs.bigSpoon,
      'smallSpoon' => SeedGlyphs.smallSpoon,
      _ => null,
    };

/// The token that selects illustration [name] (e.g. `tane:seed:jars`).
String avatarGlyphToken(String name) => '$avatarGlyphPrefix$name';