#!/bin/bash

source install.common

function get_distro_info {
    debug "Checking running distribution..."
    if [ -f /etc/lsb-release ]; then
        debug "Reading /etc/lsb-release..."
        source /etc/lsb-release
        echo "$DISTRIB_ID|$DISTRIB_RELEASE|$DISTRIB_CODENAME"
    elif [ -f /etc/os-release ]; then
        debug "Reading /etc/os-release..."
        source /etc/os-release
        echo "$ID|$VERSION_ID|$VERSION_CODENAME"
    else
        error "Unable to detect distribution, dependencies can not be installed."
        exit
    fi
}

function get_distro_deps_script {
    DISTRO="$(get_distro_info)"
    ID="$(echo $DISTRO | cut -d'|' -f1)"
    case "$ID" in
        "Ubuntu")
            echo "deps/ubuntu.sh"
            ;;
        "Raspbian"|"raspbian")
            echo "deps/raspbian.sh"
            ;;
        *)
            error "Unsupported distribution ID: '$ID'"
            ;;
    esac



}

function do_configure {

    DEPS_SCRIPT="$(get_distro_deps_script)"
    if [ ! -z "$DEPS_SCRIPT" ]; then
        info "Installing dependencies..."
        source $DEPS_SCRIPT
    else
        error "Unable to configure dependencies"
        if [ -z "$(which php)" ]; then
            error "PHP not installed, the installer can not continue."
        fi
    fi

    info "Configuring PHP..."
    source deps/php.sh

}

function do_install {

    if [ -f $1/hotfix ]; then
        debug "Hotfix already installed, or at least something was found matching $1/hotfix"
        debug "Nothing will be copied."
    else
        debug "Installing into $1"
        cp hotfix $1/hotfix
    fi
    chmod +x $1/hotfix

    debug "Verifying that hotfix is callable..."
    source ~/.profile &>/dev/null
    source ~/.bashrc &>/dev/null
    bash -c hotfix &>/dev/null
    if [ $? == 0 ]; then
        info "Hotfix successfully installed!"
    else
        echo 'test -d "$1" && export PATH="$1:$PATH"' >> ~/.bashrc
        info "Your .bashrc file has been updated to include $1 on the PATH."
    fi
    info "Please re-open your terminal if the hotfix command doesn't work immediately."

}

info "Welcome to the automagic Hotfix installer."
debug "For security reasons, this installer will not install any signing keys. See the README.md for more information."

question "Where would you like to install Hotfix?"
hint "You probably want to leave this as it is and just press enter, unless you know what you are doing."
hint "If you wish to abort the installation, ress Ctrl-C now."
echo -n "        Install directory [$HOME/bin]: "
read INSTALL_PATH
if [ -z $INSTALL_PATH ]; then
    INSTALL_PATH="$HOME/bin"
fi
if [ ! -d $INSTALL_PATH ]; then
    question "The directory $INSTALL_PATH does not exist. Do you want to create it?"
    echo -n "        Create directory? [Y/n]: "
    read $CONFIRMATION
    case "$CONFIRMATION" in
        "n|N|no")
            error "Directory not created. Aborting."
            exit
            ;;
        *)
            mkdir $INSTALL_PATH
            ;;
    esac
fi

info "Configuring system..."
do_configure

info "Installing hotfix..."
do_install "$INSTALL_PATH"