#!/bin/bash

set -eu

KITTY_VERSION="0.25.2"
KITTY_INSTALL_DIR="${HOME}/apps/kitty"
KITTY_CURRENT_VERSION=""

if [[ -x "$(command -v kitty)" ]] ; then
  KITTY_CURRENT_VERSION="$(kitty --version | grep -o '[0-9.]\+')"
fi

if [[ "$KITTY_VERSION" != "$KITTY_CURRENT_VERSION" ]] ; then
  echo "Installing kitty version ${KITTY_VERSION}..."
  
  URL="https://github.com/kovidgoyal/kitty/releases/download/v${KITTY_VERSION}/kitty-${KITTY_VERSION}-x86_64.txz"
  
  echo "Downloading from ${URL}..."
  TARGET="$(download "$URL")"
  
  if [[ -d "${KITTY_INSTALL_DIR}" ]] ; then
    echo "Removing old kitty installation..."
    rm -rf "${KITTY_INSTALL_DIR}"
  fi
  
  echo "Unpacking file ${TARGET}..."
  mkdir -p "${KITTY_INSTALL_DIR}"
  tar --directory="${KITTY_INSTALL_DIR}" -xf "${TARGET}"
  
  echo "Creating link to kitty executable..."
  mkdir -p "${HOME}/.local/bin"
  ln -s --force "${KITTY_INSTALL_DIR}/bin/kitty" "${HOME}/.local/bin/"
  
  echo "Copy kitty.desktop file..."
  mkdir -p "${HOME}/.local/share/applications"
  cp "${KITTY_INSTALL_DIR}/share/applications/kitty.desktop" "${HOME}/.local/share/applications/"
  sed -i "s|Icon=kitty|Icon=${KITTY_INSTALL_DIR}/share/icons/hicolor/256x256/apps/kitty.png|g" "${HOME}/.local/share/applications/kitty.desktop"
  sed -i "s|Exec=kitty|Exec=${KITTY_INSTALL_DIR}/bin/kitty|g" "${HOME}/.local/share/applications/kitty.desktop"
else
  echo "Kitty version ${KITTY_VERSION} already installed."
fi