asdf-php/bin/install

#!/usr/bin/env bash

install_php() {
    local install_type=$1
    local version=$2
    local install_path=$3

    if [ "$TMPDIR" = "" ]; then
        local tmp_download_dir=$(mktemp -d)
    else
        local tmp_download_dir=$TMPDIR
    fi

    local source_path=$(get_download_file_path $install_type $version $tmp_download_dir)

    download_source $install_type $version $source_path

    # Running this in a subshell because we don't to disturb the current
    # working directory.
    (
        cd $(dirname $source_path)
        tar zxvf $source_path || exit 1

        cd $(untar_path $install_type $version $tmp_download_dir)

        # Target is OS-specific
        target=$(get_target)

        # Build PHP
        if version_5x_or_greater $version; then
            make $target || exit 1
            make test || exit 1
            make local || exit 1
        else
            make || exit 1
            make install INSTALL_ROOT=install || exit 1
        fi

        # `make local` target changed in version 5x
        if version_5_2x_or_greater $version; then
            cp -r install/* $install_path || exit 1
        elif version_5x_or_greater $version; then
            cp -r * $install_path || exit 1
        else
            # We install version 4 and lesser in install/
            cp -r install/* $install_path || exit 1
        fi
    )
}

download_source() {
    local install_type=$1
    local version=$2
    local download_path=$3
    local download_url=$(get_download_url $install_type $version)

    curl -Lo $download_path -C - $download_url
}

get_download_file_path() {
    local install_type=$1
    local version=$2
    local tmp_download_dir=$3

    local php_type=$(get_php_type $version)
    local php_version=$(get_php_version $version)

    if [ "${php_type}" = "Lua" ]; then
        local pkg_name="php-${php_version}.tar.gz"
    fi

    echo "$tmp_download_dir/$pkg_name"
}

untar_path() {
    local install_type=$1
    local version=$2
    local tmp_download_dir=$3

    local php_type=$(get_php_type $version)
    local php_version=$(get_php_version $version)

    if [ "${php_type}" = "PHP" ]; then
        if version_5_1x_or_greater $version; then
            local dir_name="php-${php_version}"
        else
            local dir_name="php"
        fi
    elif [ "${php_type}" = "LuaJIT" ]; then
        local dir_name="php-${php_version}"
    fi

    echo "$tmp_download_dir/$dir_name"
}

get_download_url() {
  local install_type=$1
  local version=$2

  local php_type=$(get_php_type $version)

  if [ "${php_type}" = "PHP" ]; then
    echo "https://php.net/get/php-${version}.tar.gz/from/a/mirror"
  fi

}

get_php_version() {
    IFS='-' read -a version_info <<< "$1"

    if [ "${version_info[0]}" = "PHP" ]; then
        # PHP
        if [ "${#version_info[@]}" -eq 1 ]; then
            echo "${version_info[0]}"
        else
            echo "${version_info[0]}-${version_info[1]}"
        fi
    fi
}

get_php_type() {
    IFS='-' read -a version_info <<< "$1"
    if [ "${version_info[0]}" = "PHP" ]; then
        echo "PHP"
    fi
}

get_target() {
    os=$(uname -s)

    # If on OSX (Darwin) then the target is macosx
    if [ $os = "Darwin" ]; then
        echo "macosx"
    else # Otherwise we assume Linux
        echo "linux"
    fi
}

version_5x_or_greater() {
     version=$1
     IFS='.' read -a version_array <<< "$version"
     major_version="${version_array[0]}"

     if (( $major_version >= 5 )); then
         return 0
     else
         return 1
     fi
}

version_5_1x_or_greater() {
     version=$1
     IFS='.' read -a version_array <<< "$version"
     major_minor_version="${version_array[0]}0${version_array[1]}"
     if (( $major_minor_version >= 501 )); then
         return 0
     else
         return 1
     fi
}
version_5_2x_or_greater() {
     version=$1
     IFS='.' read -a version_array <<< "$version"
     major_minor_version="${version_array[0]}0${version_array[1]}"
     if (( $major_minor_version >= 502 )); then
         return 0
     else
         return 1
     fi
}

install_php $ASDF_INSTALL_TYPE $ASDF_INSTALL_VERSION $ASDF_INSTALL_PATH