install.sh

#!/bin/bash

set -e

: "${REPO_OWNER:=gosh-sh}"
: "${REPO:=anytree}"
: "${BIN_NAME:=anytree}"

if [[ -z "${TAG}" ]]; then
  echo ""
  echo "Downloading latest release of GOSH Anytree"
  echo ""
  TAG=latest
else
  echo ""
  echo "Downloading GOSH Anytree tag: $TAG"
  echo ""
  TAG="tags/$TAG"
fi

# Check OS and architecture
case "$OSTYPE" in
  "linux"*)
    case "$(uname -m)" in
      "x86_64") TAR="$BIN_NAME"-linux-amd64.tar.gz ;;
      *)        TAR="$BIN_NAME"-linux-arm64.tar.gz ;;
    esac
    ;;
  "darwin"*)
    case "$(uname -m)" in
      "x86_64") TAR="$BIN_NAME"-darwin-amd64.tar.gz ;;
      *)        TAR="$BIN_NAME"-darwin-arm64.tar.gz ;;
    esac
    ;;
  *)
    echo "Only \"Linux\" and \"Darwin\" are supported"
    exit 1
    ;;
esac


OLD_TAR="${TAR%.*}"
TEMP_DIR="gosh_tmp"
[[ -f $TAR ]] && rm "$TAR"
[[ -d $OLD_TAR ]] && rm -r "$OLD_TAR"
[[ -d $TEMP_DIR ]] && rm -r "$TEMP_DIR"

GH_API="https://api.github.com"
GH_REPO="$GH_API/repos/${REPO_OWNER}/${REPO}"
GH_TAGS="$GH_REPO/releases/$TAG"

# Read asset tags.
response=$(wget -qO- "$GH_TAGS")

# Get ID of the asset based on the given name.
eval $(echo "$response" | grep -C3 "name.:.\+$TAR" | grep -w id | tr : = | tr -cd '[[:alnum:]]=')
[ "$id" ] || {
  OLD=TRUE
  eval $(echo "$response" | grep -C3 "name.:.\+$OLD_TAR" | grep -w id | tr : = | tr -cd '[[:alnum:]]=')
  [ "$id" ] || {
    echo "Error: Failed to get asset id, response: $response" | awk 'length($0)<100' >&2
    exit 1
  }
}

wget --content-disposition --no-cookie -q --header "Accept: application/octet-stream" "$GH_REPO/releases/assets/$id" --show-progress

# Create the temporary directory
mkdir $TEMP_DIR

# Unpack the downloaded tar archive to the temporary directory
if [[ -z "${OLD}" ]]; then
  tar -xvzf "$TAR" -C $TEMP_DIR
  rm -f "$TAR"
else
  tar -xf "$OLD_TAR" -C $TEMP_DIR
  rm -f "$OLD_TAR"
fi

DEFAULT_PATH=$HOME/.gosh/
BINARY_PATH="${BINARY_PATH:-$DEFAULT_PATH}"

mkdir -p "$BINARY_PATH"

# Move the contents from the temporary directory to the desired installation path
mv $TEMP_DIR/"$BIN_NAME" "$BINARY_PATH"

echo ""
echo "Binary was installed to $BINARY_PATH"
echo ""

# Check if the binary path is added to .bashrc
ALREADY_ADDED=$(cat "$HOME"/.bashrc | grep "export PATH=\$PATH:\$HOME/.gosh" | wc -l)
if [ $ALREADY_ADDED -lt 1 ]; then
  echo "export PATH=\$PATH:\$HOME/.gosh" >>"$HOME"/.bashrc
  export PATH=$PATH:$HOME/.gosh
fi

# Remove the temporary directory
rm -r $TEMP_DIR