#!/bin/bash
#
# CrashReporter is a SHARED component across all SocaLabs/Rabien plugins, so we
# never downgrade it and never remove it. The pkg payload stages the incoming
# app under .incoming; here we promote it to the live location only if it is
# strictly newer than what's already installed (or nothing is installed yet).
#
set -e

BASE="/Library/Application Support/Rabien Software/Crash Reporter"
NEW="$BASE/.incoming/CrashReporter.app"
LIVE="$BASE/CrashReporter.app"
PB="/usr/libexec/PlistBuddy"

version_of () { # $1 = .app path -> prints CFBundleShortVersionString or 0
  if [ -d "$1" ]; then
    "$PB" -c "Print :CFBundleShortVersionString" "$1/Contents/Info.plist" 2>/dev/null || echo 0
  else
    echo 0
  fi
}

if [ -d "$NEW" ]; then
  newver="$(version_of "$NEW")"
  livever="$(version_of "$LIVE")"

  # Promote if nothing installed, or the incoming build is strictly newer.
  highest="$(printf '%s\n%s\n' "$livever" "$newver" | sort -V | tail -1)"
  if [ ! -d "$LIVE" ] || { [ "$highest" = "$newver" ] && [ "$newver" != "$livever" ]; }; then
    rm -rf "$LIVE"
    mv "$NEW" "$LIVE"
  fi
fi

# Always clear the staging area.
rm -rf "$BASE/.incoming"

exit 0