install.sh

#!/usr/bin/env bash
# Markdown skill installer.
#
# Installs the markdown SKILL.md (GFM + emacs markdown-mode
# compatibility rules) into every detected coding agent. For Claude
# Code this lands as a proper plugin at ~/.claude/plugins/markdown/;
# for Codex and OpenCode it lands as a user-level skill because those
# agents don't have Claude Code's plugin/skill distinction.
#
# Re-running the script is the canonical way to sync edits from
# plugins/skills/markdown/SKILL.md into whichever agent caches expect
# the file to live on disk.

set -e

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
SRC_SKILL="$SCRIPT_DIR/plugins/skills/markdown"
SRC_CC_PLUGIN="$SCRIPT_DIR/plugins/claude-code"

if [ ! -f "$SRC_SKILL/SKILL.md" ]; then
  echo "✗ Missing $SRC_SKILL/SKILL.md" >&2
  exit 1
fi

# --- Claude Code ---
# Installs as a proper plugin: plugin manifest + skills subdir under
# ~/.claude/plugins/markdown/. If an old user-level copy exists at
# ~/.claude/skills/markdown/ (from before this project was split out),
# remove it — the plugin version supersedes it.
CLAUDE_PLUGIN_DIR="$HOME/.claude/plugins/markdown"
CLAUDE_CACHE_DIR="$HOME/.claude/plugins/cache/local/markdown/0.1.0"
CLAUDE_OLD_SKILL="$HOME/.claude/skills/markdown"

if [ -d "$HOME/.claude" ]; then
  echo "→ Installing Claude Code plugin at $CLAUDE_PLUGIN_DIR..."
  rm -rf "$CLAUDE_PLUGIN_DIR"
  mkdir -p "$CLAUDE_PLUGIN_DIR"
  cp -r "$SRC_CC_PLUGIN/.claude-plugin" "$CLAUDE_PLUGIN_DIR/"
  mkdir -p "$CLAUDE_PLUGIN_DIR/skills"
  cp -r "$SRC_SKILL" "$CLAUDE_PLUGIN_DIR/skills/markdown"
  # Final structure: ~/.claude/plugins/markdown/skills/markdown/SKILL.md
  # (plugin manifest "skills": "./skills/" points at the skills dir;
  # each skill lives in its own named subdirectory with SKILL.md.)

  if [ -d "$CLAUDE_CACHE_DIR" ]; then
    echo "  → syncing plugin cache..."
    rm -rf "$CLAUDE_CACHE_DIR"
    mkdir -p "$(dirname "$CLAUDE_CACHE_DIR")"
    cp -r "$CLAUDE_PLUGIN_DIR" "$CLAUDE_CACHE_DIR"
  fi

  if [ -d "$CLAUDE_OLD_SKILL" ]; then
    echo "  → removing legacy user-skill copy at $CLAUDE_OLD_SKILL..."
    rm -rf "$CLAUDE_OLD_SKILL"
  fi
fi

# --- Codex ---
# No plugin concept — install as a user-level skill directory.
if [ -d "$HOME/.codex" ]; then
  CODEX_DEST="$HOME/.codex/skills/markdown"
  echo "→ Installing Codex skill at $CODEX_DEST..."
  mkdir -p "$(dirname "$CODEX_DEST")"
  rm -rf "$CODEX_DEST"
  cp -r "$SRC_SKILL" "$CODEX_DEST"
fi

# --- OpenCode ---
# Loaded from the path declared in opencode.json (skills.paths).
if [ -d "$HOME/.config/opencode" ]; then
  OPENCODE_DEST="$HOME/.config/opencode/skills/markdown"
  echo "→ Installing OpenCode skill at $OPENCODE_DEST..."
  mkdir -p "$(dirname "$OPENCODE_DEST")"
  rm -rf "$OPENCODE_DEST"
  cp -r "$SRC_SKILL" "$OPENCODE_DEST"
fi

echo ""
echo "✓ Done. Re-run install.sh whenever you edit plugins/skills/markdown/SKILL.md."