#!/bin/sh
set -e
# Code generated by godownloader on 2019-07-23T16:35:03Z. DO NOT EDIT.
#

usage() {
  this=$1
  cat <<EOF
$this: download binaries for fossas/fossa-cli
Usage: $this [-b] bindir [-d] [tag]
  -b sets bindir or installation directory, Defaults to /usr/local/bin
  -d turns on debug logging
   [tag] is a tag from
   https://github.com/fossas/fossa-cli/releases
   If tag is missing, then the latest will be used.
 Generated by godownloader
  https://github.com/goreleaser/godownloader
EOF
  exit 2
}

parse_args() {
  #BINDIR is /usr/local/bin unless set be ENV
  # over-ridden by flag below

  BINDIR=${BINDIR:-/usr/local/bin}
  while getopts "b:dh?x" arg; do
    case "$arg" in
      b) BINDIR="$OPTARG" ;;
      d) log_set_priority 10 ;;
      h | \?) usage "$0" ;;
      x) set -x ;;
    esac
  done
  shift $((OPTIND - 1))
  TAG=$1
}
# this function wraps all the destructive operations
# if a curl|bash cuts off the end of the script due to
# network, either nothing will happen or will syntax error
# out preventing half-done work
execute() {
  tmpdir=$(mktmpdir)
  log_debug "downloading files into ${tmpdir}"
  http_download "${tmpdir}/${TARBALL}" "${TARBALL_URL}"
  http_download "${tmpdir}/${CHECKSUM}" "${CHECKSUM_URL}"
  hash_sha256_verify "${tmpdir}/${TARBALL}" "${tmpdir}/${CHECKSUM}"
  srcdir="${tmpdir}"
  (cd "${tmpdir}" && untar "${TARBALL}")
  log_debug "setting up bindir: $BINDIR"
  mkdir -p "$BINDIR" 2> /dev/null || sudo mkdir -p "$BINDIR"
  binexe="fossa"
  if [ "$OS" = "windows" ]; then
    binexe="${binexe}.exe"
  fi
  log_debug "installing binary: $binexe"
  # Use mv instead of cp, as copying when a binary already exists in that spot can create an invalid binary on macOS
  mv "${srcdir}/${binexe}" "${BINDIR}/${binexe}" 2> /dev/null || sudo cp "${srcdir}/${binexe}" "${BINDIR}/"
  log_info "installed ${BINDIR}/${binexe}"
}
is_supported_platform() {
  platform=$1
  found=1
  case "$platform" in
    windows/amd64) found=0 ;;
    darwin/amd64) found=0 ;;
    darwin/arm64) found=0 ;;
    linux/amd64) found=0 ;;
    linux/arm64) found=0 ;;
  esac
  return $found
}
check_platform() {
  if is_supported_platform "$PLATFORM"; then
    # optional logging goes here
    true
  else
    log_crit "platform $PLATFORM is not supported.  Make sure this script is up-to-date and file request at https://github.com/${PREFIX}/issues/new"
    exit 1
  fi
}
tag_to_version() {
  if [ -z "${TAG}" ]; then
    log_info "checking GitHub for latest tag"
  else
    log_info "checking GitHub for tag '${TAG}'"
  fi
  REALTAG=$(github_release "$OWNER/$REPO" "${TAG}") && true
  if test -z "$REALTAG"; then
    log_crit "unable to find '${TAG}' - use 'latest' or see https://github.com/${PREFIX}/releases for details"
    exit 1
  fi
  # if version starts with 'v', remove it
  TAG="$REALTAG"
  VERSION=${TAG#v}
}
adjust_format() {
  # change format (tar.gz or zip) based on ARCH
  case ${ARCH} in
    windows) FORMAT=zip ;;
  esac
  true
}
adjust_os() {
  # adjust archive name based on OS
  case $(uname_os) in
   linux)
    # Before 3.4.7 fossa was distributed in .zip archives on linux.
    # 3.4.7 and later distributed fossa in tar.gz because it is more common than zip on linux.
	if version_less_than "$VERSION" "3.4.7"
	then
	  FORMAT=zip
    else
      FORMAT=tar.gz
	fi ;;
  esac
  true
}
adjust_arch() {
  # adjust archive name based on ARCH
  true
}
arch_version_check() {
  # TODO: Make this version correct before merging.
  if [ "${OS}/${ARCH}" = "linux/arm64" ] && version_less_than "${VERSION}" '3.9.32'
  then
    echo "There is no linux/arm64 binary for version $VERSION."
    echo "Please select a version that is at least version 3.9.32"
    exit 1
  fi
  true
}
cat /dev/null <<EOF
------------------------------------------------------------------------
https://github.com/client9/shlib - portable posix shell functions
Public domain - http://unlicense.org
https://github.com/client9/shlib/blob/master/LICENSE.md
but credit (and pull requests) appreciated.
------------------------------------------------------------------------
EOF
is_command() {
  command -v "$1" >/dev/null
}
echoerr() {
  echo "$@" 1>&2
}
_logp=6
log_set_priority() {
  _logp="$1"
}
log_priority() {
  if test -z "$1"; then
    echo "$_logp"
    return
  fi
  [ "$1" -le "$_logp" ]
}
log_tag() {
  case $1 in
    0) echo "emerg" ;;
    1) echo "alert" ;;
    2) echo "crit" ;;
    3) echo "err" ;;
    4) echo "warning" ;;
    5) echo "notice" ;;
    6) echo "info" ;;
    7) echo "debug" ;;
    *) echo "$1" ;;
  esac
}
log_debug() {
  log_priority 7 || return 0
  echoerr "$(log_prefix)" "$(log_tag 7)" "$@"
}
log_info() {
  log_priority 6 || return 0
  echoerr "$(log_prefix)" "$(log_tag 6)" "$@"
}
log_err() {
  log_priority 3 || return 0
  echoerr "$(log_prefix)" "$(log_tag 3)" "$@"
}
log_crit() {
  log_priority 2 || return 0
  echoerr "$(log_prefix)" "$(log_tag 2)" "$@"
}
uname_os() {
  os=$(uname -s | tr '[:upper:]' '[:lower:]')
  case "$os" in
    msys_nt) os="windows" ;;
  esac
  echo "$os"
}
uname_arch() {
  arch=$(uname -m)
  case $arch in
    x86_64) arch="amd64" ;;
    arm64) arch="arm64" ;;
    x86) arch="386" ;;
    i686) arch="386" ;;
    i386) arch="386" ;;
    aarch64) arch="arm64" ;;
    armv5*) arch="armv5" ;;
    armv6*) arch="armv6" ;;
    armv7*) arch="armv7" ;;
  esac
  echo "${arch}"
}
uname_os_check() {
  os=$(uname_os)
  case "$os" in
    darwin) return 0 ;;
    dragonfly) return 0 ;;
    freebsd) return 0 ;;
    linux) return 0 ;;
    android) return 0 ;;
    nacl) return 0 ;;
    netbsd) return 0 ;;
    openbsd) return 0 ;;
    plan9) return 0 ;;
    solaris) return 0 ;;
    windows) return 0 ;;
  esac
  log_crit "uname_os_check '$(uname -s)' got converted to '$os' which is not a GOOS value. Please file bug at https://github.com/client9/shlib"
  return 1
}
uname_arch_check() {
  arch=$(uname_arch)
  case "$arch" in
    386) return 0 ;;
    amd64) return 0 ;;
    arm64) return 0 ;;
    armv5) return 0 ;;
    armv6) return 0 ;;
    armv7) return 0 ;;
    ppc64) return 0 ;;
    ppc64le) return 0 ;;
    mips) return 0 ;;
    mipsle) return 0 ;;
    mips64) return 0 ;;
    mips64le) return 0 ;;
    s390x) return 0 ;;
    amd64p32) return 0 ;;
  esac
  log_crit "uname_arch_check '$(uname -m)' got converted to '$arch' which is not a GOARCH value.  Please file bug report at https://github.com/client9/shlib"
  return 1
}
untar() {
  tarball=$1
  case "${tarball}" in
    *.tar.gz | *.tgz) tar -xzf "${tarball}" ;;
    *.tar) tar -xf "${tarball}" ;;
    *.zip) unzip -o "${tarball}" ;;
    *)
      log_err "untar unknown archive format for ${tarball}"
      return 1
      ;;
  esac
}
mktmpdir() {
  test -z "$TMPDIR" && TMPDIR="$(mktemp -d)"
  mkdir -p "${TMPDIR}"
  echo "${TMPDIR}"
}
http_download_curl() {
  local_file=$1
  source_url=$2
  header=$3
  if [ -n "$header" ]; then
    HTTP_CODE=$(curl -w '%{http_code}' -sSL -H "$header" -H "Cache-Control: no-cache" -o "$local_file" "$source_url") || (log_debug "curl command failed." && return 1)
  fi
  if [ -z "$header" ]; then
    HTTP_CODE=$(curl -w '%{http_code}' -sSL -H "Cache-Control: no-cache" -o "$local_file" "$source_url") || (log_debug "curl command failed." && return 1)
  fi
  return 0
}
http_download_wget() {
  local_file=$1
  source_url=$2
  header=$3
  if [ -n "$header" ]; then
    HTTP_CODE=$(wget -q --header "$header" --no-cache --server-response -O "$local_file" "$source_url" 2>&1 | awk 'NR==1{print $2}') || (log_debug "wget command failed." && return 1)
  fi
  if [ -z "$header" ]; then
    HTTP_CODE=$(wget -q --no-cache --server-response -O "$local_file" "$source_url" 2>&1 | awk 'NR==1{print $2}') || (log_debug "wget command failed." && return 1)
  fi
  return 0
}
http_download() {
  log_debug "http_download $2"
  if is_command curl; then
    http_download_curl "$@"
  elif is_command wget; then
    http_download_wget "$@"
  else
    log_crit "http_download unable to find wget or curl"
    return 1
  fi

  # tar.gz releases were added starting from v3.4.7.
  # Context: https://github.com/fossas/fossa-cli/pull/1066
  case $source_url in
    *.tar.gz) if [ "$HTTP_CODE" = "404" ]; then
      log_debug "http_download received 404 from $source_url, trying to download a zip file instead..."
      FORMAT="zip"
      TARBALL=${NAME}.${FORMAT}
      TARBALL_URL=${GITHUB_DOWNLOAD}/${TAG}/${TARBALL}
      http_download "${tmpdir}/${TARBALL}" "${TARBALL_URL}" "$3"
    fi ;;
  esac

  # wget returns the first status code it finds even if it redirected. Checking
  # for 302 seems to work consistently with GitHub's API.
  if [ -n "$HTTP_CODE" ] && [ "$HTTP_CODE" != 200 ] && [ "$HTTP_CODE" != 302 ]; then
    log_err "http_download received HTTP status $HTTP_CODE from $2"
    return 1
  fi
}
http_copy() {
  tmp=$(mktemp)
  if [ ! -w "$tmp" ];
  then
    log_crit "Generated tempory file ${tmp} is not writable!"
  fi
  if [ ! -r "$tmp" ];
  then
    log_crit "Generated tempory file ${tmp} is not readable!"
  fi

  http_download "${tmp}" "$1" "$2" || return 1
  body=$(cat "$tmp")
  rm -f "${tmp}"
  echo "$body"
}
github_release() {
  owner_repo=$1
  version=$2
  test -z "$version" && version="latest"
  giturl="https://github.com/${owner_repo}/releases/${version}"
  json=$(http_copy "$giturl" "Accept:application/json")
  test -z "$json" && return 1
  version=$(echo "$json" | tr -s '\n' ' ' | sed 's/.*"tag_name":"//' | sed 's/".*//')
  test -z "$version" && return 1
  echo "$version"
}
hash_sha256() {
  TARGET=${1:-/dev/stdin}
  if is_command gsha256sum; then
    hash=$(gsha256sum "$TARGET") || return 1
    echo "$hash" | cut -d ' ' -f 1
  elif is_command sha256sum; then
    hash=$(sha256sum "$TARGET") || return 1
    echo "$hash" | cut -d ' ' -f 1
  elif is_command shasum; then
    hash=$(shasum -a 256 "$TARGET" 2>/dev/null) || return 1
    echo "$hash" | cut -d ' ' -f 1
  elif is_command openssl; then
    hash=$(openssl -dst openssl dgst -sha256 "$TARGET") || return 1
    echo "$hash" | cut -d ' ' -f a
  else
    log_crit "hash_sha256 unable to find command to compute sha-256 hash"
    return 1
  fi
}
hash_sha256_verify() {
  TARGET=$1
  checksums=$2
  if [ -z "$checksums" ]; then
    log_err "hash_sha256_verify checksum file not specified in arg2"
    return 1
  fi
  BASENAME=${TARGET##*/}
  want=$(grep "${BASENAME}" "${checksums}" 2>/dev/null | tr '\t' ' ' | cut -d ' ' -f 1)
  if [ -z "$want" ]; then
    log_err "hash_sha256_verify unable to find checksum for '${TARGET}' in '${checksums}'"
    return 1
  fi
  got=$(hash_sha256 "$TARGET")
  if [ "$want" != "$got" ]; then
    log_err "hash_sha256_verify checksum for '$TARGET' did not verify ${want} vs $got"
    return 1
  fi
}
cat /dev/null <<EOF
------------------------------------------------------------------------
End of functions from https://github.com/client9/shlib
------------------------------------------------------------------------
EOF

###############################################
# Gets the binary filename (without extentsion)
# used in repo release.
#
# Globals:
#   PROJECT_NAME
#   VERSION
#   OS
#   ARCH
# Arguments:
#   None
################################################
get_binary_name() {
  name=${PROJECT_NAME}_${VERSION}_${OS}_${ARCH}
  case ${PLATFORM} in
    darwin/arm64)
      if version_less_than "$VERSION" "3.9.19"; then
        log_info "Platform ${PLATFORM} (m1 silicon) detected and requested version < 3.9.19, using compatible darwin/amd64 binary instead."
        name=${PROJECT_NAME}_${VERSION}_${OS}_amd64
      fi ;;
  esac
  echo "$name"
}
# Check if one version is less than another.
# Versions are expected to be of the for X.X.X where X is some integer.
#
# Given version strings X1.X2.X3 and Y1.Y2.Y3:
# A version is less than another if there exists an Xn/Yn pair where Xn < Yn where for every preceding Xn/Yn pair in the sequence Xn == Yn.
# Example:
# 2.1.4 < 3.1.4
# 3.5.0 < 3.6.5
# 3.5.5 < 3.5.15
#
# Returns 0 when the first version argument < the second.
# Returns 1 otherwise.
version_less_than() {
    for i in 1 2 3
    do
        VERSION_PIECE1=$(echo "$1" | cut -d '.' -f $i)
        VERSION_PIECE2=$(echo "$2" | cut -d '.' -f $i)

        if [ "$VERSION_PIECE1" -lt "$VERSION_PIECE2" ]
        then
            return 0
        fi

        if [ "$VERSION_PIECE1" -gt "$VERSION_PIECE2" ]
        then
            return 1
        fi
    done

    return 1
}
print_telemetry_disclaimer() {
  log_info ""
  log_info "------"
  log_info "Notice"
  log_info "------"
  log_info ""
  log_info "FOSSA collects warnings, errors, and usage data to improve"
	log_info "the FOSSA CLI and your experience."
  log_info ""
  log_info "Read more: https://github.com/fossas/fossa-cli/blob/master/docs/telemetry.md"
  log_info ""
  log_info "If you want to prevent any telemetry data from being sent to"
  log_info "the server, you can opt out of telemetry by setting"
  log_info "FOSSA_TELEMETRY_SCOPE environment variable to 'off' in your shell."
  log_info ""
  log_info "For example:"
  log_info "   FOSSA_TELEMETRY_SCOPE=off fossa analyze"
  log_info ""
  log_info ""
}

PROJECT_NAME="fossa"
OWNER=fossas
REPO="fossa-cli"
FORMAT=zip
OS=$(uname_os)
ARCH=$(uname_arch)
PREFIX="$OWNER/$REPO"

# use in logging routines
log_prefix() {
	echo "$PREFIX"
}
PLATFORM="${OS}/${ARCH}"
GITHUB_DOWNLOAD=https://github.com/${OWNER}/${REPO}/releases/download

uname_os_check "$OS"
uname_arch_check "$ARCH"

parse_args "$@"

check_platform

tag_to_version

adjust_format

adjust_os

adjust_arch

arch_version_check

NAME=$(get_binary_name)
TARBALL=${NAME}.${FORMAT}
TARBALL_URL=${GITHUB_DOWNLOAD}/${TAG}/${TARBALL}
log_info "found fossa-cli ${VERSION} binary for ${PLATFORM} at ${TARBALL_URL}"

CHECKSUM=${TARBALL}.sha256
CHECKSUM_URL=${GITHUB_DOWNLOAD}/${TAG}/${CHECKSUM}

print_telemetry_disclaimer
execute
