#!/bin/sh
# Install the portbug client on Linux or macOS. No root needed.
#
#   curl -fsSL https://portbug.pckee.com/i.sh | sh
#   ./install.sh --prefix ~/bin --source ./dist/0.1.0/linux-amd64
#   ./install.sh --uninstall
#
# Installs to ~/.local/bin by default, which is already on PATH on most systems;
# if it is not, the script says so rather than editing shell rc files behind
# your back.
set -eu

PREFIX="${PORTBUG_PREFIX:-$HOME/.local/bin}"
SOURCE=""
BASE_URL="${PORTBUG_BASE_URL:-https://portbug.pckee.com}"
UNINSTALL=0

while [ $# -gt 0 ]; do
  case "$1" in
    --prefix)    PREFIX="$2"; shift 2 ;;
    --source)    SOURCE="$2"; shift 2 ;;
    --uninstall) UNINSTALL=1; shift ;;
    -h|--help)   sed -n '2,12p' "$0" | sed 's/^# \{0,1\}//'; exit 0 ;;
    *)           echo "unknown option: $1" >&2; exit 2 ;;
  esac
done

say() { printf '  %s\n' "$*"; }

if [ "$UNINSTALL" = 1 ]; then
  for b in portbug portbugd portbugctl; do
    [ -f "$PREFIX/$b" ] && rm -f "$PREFIX/$b" && say "removed $PREFIX/$b"
  done
  echo "uninstalled."
  exit 0
fi

os=$(uname -s | tr '[:upper:]' '[:lower:]')
case "$os" in
  linux)  os=linux ;;
  darwin) os=darwin ;;
  *) echo "portbug: unsupported OS '$os' (Linux and macOS only; Windows uses install.ps1)" >&2; exit 1 ;;
esac
case "$(uname -m)" in
  x86_64|amd64) arch=amd64 ;;
  arm64|aarch64) arch=arm64 ;;
  *) echo "portbug: unsupported architecture '$(uname -m)'" >&2; exit 1 ;;
esac

tmp=""
cleanup() { [ -n "$tmp" ] && rm -rf "$tmp"; }
trap cleanup EXIT

if [ -z "$SOURCE" ]; then
  # Alongside the script first: release archives ship install.sh next to the
  # binaries, so an offline install just works.
  here=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
  if [ -f "$here/portbug" ]; then
    SOURCE="$here"
  else
    SOURCE="$BASE_URL/dl/portbug-$os-$arch.tar.gz"
  fi
fi

case "$SOURCE" in
  http://*|https://*)
    tmp=$(mktemp -d)
    say "downloading $SOURCE"
    if command -v curl >/dev/null 2>&1; then
      curl -fsSL "$SOURCE" -o "$tmp/portbug.tar.gz"
    elif command -v wget >/dev/null 2>&1; then
      wget -qO "$tmp/portbug.tar.gz" "$SOURCE"
    else
      echo "portbug: need curl or wget" >&2; exit 1
    fi
    tar -xzf "$tmp/portbug.tar.gz" -C "$tmp"
    src="$tmp"
    ;;
  *.tar.gz)
    tmp=$(mktemp -d); tar -xzf "$SOURCE" -C "$tmp"; src="$tmp" ;;
  *)
    src="$SOURCE" ;;
esac

if [ ! -f "$src/portbug" ]; then
  found=$(find "$src" -name portbug -type f 2>/dev/null | head -n 1 || true)
  [ -n "$found" ] || { echo "portbug: no 'portbug' binary under $src" >&2; exit 1; }
  src=$(dirname "$found")
fi

mkdir -p "$PREFIX"
for b in portbug portbugd portbugctl; do
  if [ -f "$src/$b" ]; then
    install -m 0755 "$src/$b" "$PREFIX/$b" 2>/dev/null || { cp "$src/$b" "$PREFIX/$b"; chmod 0755 "$PREFIX/$b"; }
    say "$b"
  fi
done
say "installed to $PREFIX"

case ":$PATH:" in
  *":$PREFIX:"*) ;;
  *) echo
     echo "  $PREFIX is not on your PATH. Add this to your shell rc:"
     echo "      export PATH=\"\$PATH:$PREFIX\""
     ;;
esac

echo
"$PREFIX/portbug" version
echo
echo "  portbug quick --to <node> --center $BASE_URL"