#!/usr/bin/env bash
# uninstall.sh — Stop Prefex and restore Claude Code settings
#
# Usage:
#   curl -fsSL https://prefex.vercel.app/uninstall.sh | bash
#   bash uninstall.sh          # keep ~/.prefex data
#   bash uninstall.sh --purge  # also remove ~/.prefex directory
#
# All install-state logic (PID stop, settings.json restore) is delegated to
# `prefex uninstall`; this script handles the only thing the binary can't do
# itself: remove its own executable.

set -euo pipefail

INSTALL_DIR="${HOME}/.prefex"
PURGE=false
for arg in "$@"; do [ "$arg" = "--purge" ] && PURGE=true; done

if [ -t 1 ]; then
  BOLD="\033[1m"; GREEN="\033[0;32m"; YELLOW="\033[0;33m"; RESET="\033[0m"
else
  BOLD=""; GREEN=""; YELLOW=""; RESET=""
fi

info()  { printf "${GREEN}==>${RESET} %s\n" "$*"; }
warn()  { printf "${YELLOW}warn:${RESET} %s\n" "$*" >&2; }

printf "\n${BOLD}Prefex — uninstall${RESET}\n\n"

# ── Delegate lifecycle to the binary ─────────────────────────────────────────
# `prefex uninstall` stops the daemon, restores ~/.claude/settings.json, and
# optionally deletes ~/.prefex.  The binary's exit code is non-fatal here so
# the rest of the script (binary removal) still runs even if prefex isn't found.

PREFEX_BIN=""
for candidate in /usr/local/bin/prefex "${HOME}/bin/prefex"; do
  if [ -x "$candidate" ]; then
    PREFEX_BIN="$candidate"
    break
  fi
done

if [ -n "$PREFEX_BIN" ]; then
  UNINSTALL_FLAGS=""
  [ "$PURGE" = "true" ] && UNINSTALL_FLAGS="--purge"
  info "Running: prefex uninstall ${UNINSTALL_FLAGS}…"
  "$PREFEX_BIN" uninstall ${UNINSTALL_FLAGS} || true
else
  warn "prefex binary not found — attempting manual cleanup."
  # Fallback: restore settings.json directly if binary is gone.
  BACKUP="${INSTALL_DIR}/backup_claude_code.json"
  SETTINGS="${HOME}/.claude/settings.json"
  if [ -f "$BACKUP" ] && command -v python3 &>/dev/null; then
    cp "$BACKUP" "$SETTINGS" && rm -f "$BACKUP"
    info "Restored ${SETTINGS} from backup."
  elif [ -f "$SETTINGS" ] && command -v python3 &>/dev/null; then
    python3 - "$SETTINGS" <<'PY'
import json, sys
path = sys.argv[1]
try:
    cfg = json.loads(open(path).read())
    cfg.setdefault('env', {})['ANTHROPIC_BASE_URL'] = 'https://api.anthropic.com'
    open(path, 'w').write(json.dumps(cfg, indent=2))
    print("==> Reset ANTHROPIC_BASE_URL to https://api.anthropic.com")
except Exception as e:
    print(f"warn: {e}", file=sys.stderr)
PY
  fi
  # Stop by PID file if still running.
  PID_FILE="${INSTALL_DIR}/prefex.pid"
  if [ -f "$PID_FILE" ]; then
    PID=$(cat "$PID_FILE")
    kill "$PID" 2>/dev/null && info "Stopped PID $PID" || true
    rm -f "$PID_FILE"
  fi
fi

# ── Remove the binary (can't self-delete) ────────────────────────────────────

for bin_path in /usr/local/bin/prefex "${HOME}/bin/prefex"; do
  if [ -f "$bin_path" ]; then
    rm -f "$bin_path" && info "Removed ${bin_path}"
  fi
done

# Remove license key — tied to install; fresh one generated on reinstall.
[ -f "${INSTALL_DIR}/license.json" ] && rm -f "${INSTALL_DIR}/license.json" \
  && info "Removed license key."

printf "\n${BOLD}Prefex uninstalled.${RESET}\n"
printf "Claude Code will route directly to https://api.anthropic.com\n\n"