install.sh

#!/usr/bin/env bash

set -euo pipefail

repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
codex_home="${CODEX_HOME:-$HOME/.codex}"
skills_dest="${CODEX_SKILLS_DIR:-$codex_home/skills}"
agents_dest="${AGENTS_SKILLS_DIR:-$HOME/.agents/skills}"
timestamp="$(date +%Y%m%d%H%M%S)"

skills=(
  "code-review"
  "instruction-surface-audit"
  "runtime-rollout-matrix"
)

backup_path() {
  local path="$1"
  if [[ -e "$path" || -L "$path" ]]; then
    local backup="${path}.bak.${timestamp}"
    mv "$path" "$backup"
    printf 'Backed up %s -> %s\n' "$path" "$backup"
  fi
}

install_skill() {
  local skill_name="$1"
  local src="$repo_root/skills/$skill_name"
  local dest="$skills_dest/$skill_name"
  local link="$agents_dest/$skill_name"

  if [[ ! -d "$src" ]]; then
    printf 'Missing source skill directory: %s\n' "$src" >&2
    exit 1
  fi

  backup_path "$dest"
  cp -R "$src" "$dest"
  printf 'Installed %s -> %s\n' "$skill_name" "$dest"

  backup_path "$link"
  ln -s "$dest" "$link"
  printf 'Linked %s -> %s\n' "$link" "$dest"
}

ensure_graph_dependency() {
  printf 'Installing code-review-graph via pip...\n'
  PIP_DISABLE_PIP_VERSION_CHECK=1 python3 -m pip install --user --upgrade code-review-graph

  local user_base
  user_base="$(python3 -c 'import site; print(site.USER_BASE)')"
  local graph_bin="$user_base/bin/code-review-graph"

  if [[ -x "$graph_bin" ]]; then
    "$graph_bin" --version
    printf 'Add %s to PATH to invoke code-review-graph directly.\n' "$(dirname "$graph_bin")"
    return
  fi

  if command -v code-review-graph >/dev/null 2>&1; then
    code-review-graph --version
    return
  fi

  printf 'Warning: code-review-graph installed, but the executable was not found on PATH or in the Python user bin directory.\n' >&2
}

mkdir -p "$skills_dest" "$agents_dest"

for skill_name in "${skills[@]}"; do
  install_skill "$skill_name"
done

ensure_graph_dependency

printf '\nInstalled skill pack into %s\n' "$skills_dest"
printf 'Compatibility links are in %s\n' "$agents_dest"
printf 'Restart Codex to pick up the new skills.\n'