#!/usr/bin/env bash

# ImageMagick Installer
# Min. Requirement  : GNU/Linux Ubuntu 16.04
# Last Build        : 02/11/2019
# Author            : MasEDI.Net (me@masedi.net)
# Since Version     : 1.0.0

# Include helper functions.
if [ "$(type -t run)" != "function" ]; then
    BASEDIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )
    # shellchechk source=scripts/helper.sh
    # shellcheck disable=SC1090
    . "${BASEDIR}/helper.sh"
fi

# Make sure only root can run this installer script.
requires_root


function install_imagemagick() {
    # Do something here...
    return 1
}

# Install PHP Imagick extension.
function install_php_imagick() {
    # PHP version.
    local PHPv="${1}"
    if [ -z "${PHPv}" ]; then
        PHPv=${PHP_VERSION:-"7.3"}
    fi

    echo -e "\nInstalling PHP ${PHPv} Imagick extension..."

    if hash apt 2>/dev/null; then
        run apt install -qq -y "php${PHPv}-imagick"
    else
        fail "Unable to install PHP ${PHPv} Imagick, this GNU/Linux distribution is not supported."
    fi
}

function init_imagemagick_install() {
    local SELECTED_INSTALLER=""
    #local IMAGICK_VERSION=""
    local OPT_PHP_VERSION=""

    OPTS=$(getopt -o p:ir \
        -l installer:,php-version:,install,remove \
        -n "init_imagemagick_install" -- "$@")

    eval set -- "${OPTS}"

    while true
    do
        case "${1}" in
            -I|--installer) shift
                SELECTED_INSTALLER="${1}"
                shift
            ;;
            -p|--php-version) shift
                OPT_PHP_VERSION="${1}"
                shift
            ;;
            -i|--install) shift
                #ACTION="install"
            ;;
            -r|--remove) shift
                #ACTION="remove"
            ;;
            --) shift
                break
            ;;
            *)
                fail "Invalid argument: ${1}"
                exit 1
            ;;
        esac
    done

    if [ -n "${OPT_PHP_VERSION}" ]; then
        PHP_VERSION=${OPT_PHP_VERSION}
    else
        PHP_VERSION=${PHP_VERSION:-"7.3"}
    fi

    if "${AUTO_INSTALL}"; then
        if [[ -z "${PHP_IMAGEMAGICK_INSTALLER}" || "${PHP_IMAGEMAGICK_INSTALLER}" == "none" ]]; then
            INSTALL_IMAGEMAGICK="n"
        else
            INSTALL_IMAGEMAGICK="y"
            SELECTED_INSTALLER=${PHP_IMAGEMAGICK_INSTALLER}
        fi
    else
        while [[ "${INSTALL_IMAGEMAGICK}" != "y" && "${INSTALL_IMAGEMAGICK}" != "n" ]]; do
            read -rp "Do you want to install ImageMagick library? [y/n]: " -i y -e INSTALL_IMAGEMAGICK
        done
        echo ""
    fi

    if [[ "${INSTALL_IMAGEMAGICK}" == Y* || "${INSTALL_IMAGEMAGICK}" == y* ]]; then
        echo "Available ImageMagick installation method:"
        echo "  1). Install from Repository (repo)"
        echo "  2). Compile from Source (source)"
        echo "--------------------------------"

        while [[ ${SELECTED_INSTALLER} != "1" && ${SELECTED_INSTALLER} != "2" && ${SELECTED_INSTALLER} != "none" && \
            ${SELECTED_INSTALLER} != "repo" && ${SELECTED_INSTALLER} != "source" ]]; do
            read -rp "Select an option [1-2]: " -e SELECTED_INSTALLER
        done

        case ${SELECTED_INSTALLER} in
            1|"repo")
                echo "Installing ImageMagick library from repository..."
                run apt install -qq -y imagemagick
            ;;
            2|"source")
                echo "Installing ImageMagick library from source..."
                local CURRENT_DIR && \
                CURRENT_DIR=$(pwd)
                run cd "${BUILD_DIR}"
                run wget -q https://www.imagemagick.org/download/ImageMagick.tar.gz
                run tar -zxf ImageMagick.tar.gz
                run cd ImageMagick-*
                run ./configure
                run make
                run make install
                run ldconfig /usr/local/lib
                run cd "${CURRENT_DIR}"
            ;;
            *)
                # Skip installation.
                error "Installer method not supported. ImageMagick installation skipped."
            ;;
        esac

        if "${DRYRUN}"; then
            info "ImageMagick installed in dryrun mode."
        else
            if [[ -n $(command -v magick) ]]; then
                success "ImageMagick version $(magick -version | grep ^Version | cut -d' ' -f3) has been installed."
            elif [[ -n $(command -v identify) ]]; then
                success "ImageMagick version $(identify -version | grep ^Version | cut -d' ' -f3) has been installed."
            fi
        fi

        # Install PHP Imagick extension.
        install_php_imagick "${PHP_VERSION}"
    else
        info "ImageMagick installation skipped."
    fi
}


echo "[ImageMagick Packages Installation]"

# Start running things from a call at the end so if this script is executed
# after a partial download it doesn't do anything.
if [[ -n $(command -v magick) || -n $(command -v identify) ]]; then
    info "ImageMagick already exists. Installation skipped..."
else
    init_imagemagick_install "$@"
fi