#!/bin/bash
# install.sh — install the ralph-workplan skill into Claude Code's plugin system
#
# Usage:
#   ./install.sh              # install
#   ./install.sh --uninstall  # remove

set -euo pipefail

PLUGIN_NAME="ralph-workplan"
REPO_DIR="$(cd "$(dirname "$0")" && pwd)"
PLUGINS_DIR="${HOME}/.claude/plugins"
INSTALL_PATH="${PLUGINS_DIR}/cache/local/${PLUGIN_NAME}"
REGISTRY="${PLUGINS_DIR}/installed_plugins.json"

# ── Uninstall ──────────────────────────────────────────────────────────────────
if [[ "${1:-}" == "--uninstall" ]]; then
  if [[ -d "$INSTALL_PATH" ]]; then
    rm -rf "$INSTALL_PATH"
    echo "Removed: $INSTALL_PATH"
  fi
  # Remove from installed_plugins.json
  if [[ -f "$REGISTRY" ]]; then
    python3 - "$REGISTRY" "$PLUGIN_NAME" <<'PY'
import json, sys
path, name = sys.argv[1], sys.argv[2]
d = json.load(open(path))
d.setdefault("plugins", {}).pop(name, None)
json.dump(d, open(path, "w"), indent=2)
print(f"Removed '{name}' from {path}")
PY
  fi
  echo "✅ Uninstalled: $PLUGIN_NAME"
  echo "   Restart Claude Code to apply."
  exit 0
fi

# ── Install ────────────────────────────────────────────────────────────────────
mkdir -p "${INSTALL_PATH}/commands"
mkdir -p "${INSTALL_PATH}/scripts"

# Skill file goes in commands/ — that's where Claude Code looks
cp "${REPO_DIR}/plugin/ralph-workplan.md"     "${INSTALL_PATH}/commands/ralph-workplan.md"
cp "${REPO_DIR}/plugin/scripts/check-done.sh" "${INSTALL_PATH}/scripts/check-done.sh"
cp "${REPO_DIR}/plugin/scripts/setup.sh"      "${INSTALL_PATH}/scripts/setup.sh"

chmod +x "${INSTALL_PATH}/scripts/check-done.sh"
chmod +x "${INSTALL_PATH}/scripts/setup.sh"

# Register in installed_plugins.json so Claude Code discovers the plugin
python3 - "$REGISTRY" "$PLUGIN_NAME" "$INSTALL_PATH" <<'PY'
import json, sys
path, name, install_path = sys.argv[1], sys.argv[2], sys.argv[3]
try:
    d = json.load(open(path))
except (FileNotFoundError, json.JSONDecodeError):
    d = {"version": 2, "plugins": {}}
d.setdefault("plugins", {})[name] = [{"scope": "user", "installPath": install_path}]
json.dump(d, open(path, "w"), indent=2)
PY

echo "✅ Installed: $PLUGIN_NAME"
echo "   Path:  $INSTALL_PATH"
echo "   Skill: /ralph-workplan <workplan-file> [--max-iterations N]"
echo ""
echo "   Restart Claude Code for the skill to appear."