#!/bin/bash
#
#   $Id: dotvim-install.sh 15610 2012-07-31 09:37:57Z TGunkel $
#
#   vim install file
#
#   Usage:
#
#       wget -qO- get.qumido.de/vim | bash
#           or
#       curl -sL  get.qumido.de/vim | bash

NAME="dotvim-install"
TMPDIR="/tmp/${NAME}"
DLURL="https://vim.24dial.com/vim.tar"
LOCALINSTALLER="${TMPDIR}/vim.tar"
LOGFILE="${HOME}/.${NAME}.log"
BACKUPDIR="${HOME}/.${NAME}_backup"

elog () {
    LOGDATE=`date "+%Y-%m-%d %H:%M:%S"`
    LOGTYPE=`echo $1 | tr '[:lower:]' '[:upper:]'`
    LOGTEXT=$2

    echo -e "${LOGDATE}\t${LOGTYPE}\t${LOGTEXT}" >> ${LOGFILE} || \
        { echo "Error: Could not write logfile ${LOGFILE}!"; exit 1; }
    suffix=""
    [ ${LOGTYPE} == "ERROR" ] && suffix="Error: ";
    [ ${LOGTYPE} == "INFO" ] && suffix="  ";
    echo -e "${suffix}${LOGTEXT}"
    
    if [ ${LOGTYPE} == "ERROR" ]; then
        [ -d ${TMPDIR} ] && rm -fr ${TMPDIR}
        echo "Exit."
        exit 1
    fi
}


if [ -f /etc/debian_version ]; then
    if [ `dpkg -l | awk '{print $2}' | grep -c ^vim$` -ne 1 ]; then
        sudo=""; [ `id -u` -eq 0 ] && sudo="sudo"
        ${sudo} apt-get install -y vim >/dev/null 2>&1 || elog "ERROR" "failed to install vim"
    fi
elif [ -f /etc/redhat-release ]; then
    if [ `rpm -qa | awk '{print $1}' | grep -c ^vim-common` -ne 1 ]; then
        sudo=""; [ `id -u` -eq 0 ] && sudo="sudo"
        ${sudo} yum -y install vim >/dev/null 2>&1 || elog "ERROR" "failed to install vim"
    fi
else
    elog "ERROR" "OS not supported!"
fi

mkdir -p ${TMPDIR} || elog "ERROR" "failed to create ${TMPDIR}"
mkdir -p ${BACKUPDIR} || elog "ERROR" "failed to create ${BACKUPDIR}"

if type curl >/dev/null 2>&1; then
  DOWNLOADCMD="curl -k -s -L -o ${LOCALINSTALLER} ${DLURL}"
elif type wget >/dev/null 2>&1; then
  DOWNLOADCMD="wget -q --no-check-certificate -O ${LOCALINSTALLER} ${DLURL}"
else
  elog "ERROR" "curl or wget required!"
fi

${DOWNLOADCMD} || elog "ERROR" "failed to get ${DLURL}"

BACKUPDIR=${BACKUPDIR}/`date +%s`

if [ -d ${HOME}/.vim ]; then
    mkdir -p ${BACKUPDIR}
    elog "INFO" "Found ${HOME}/.vim"
    elog "INFO" "Moving ${HOME}/.vim to ${BACKUPDIR}/..."
    mv ${HOME}/.vim ${BACKUPDIR}/ || elog "ERROR" "failed to move ${HOME}/.vim"
fi

if [ -f ${HOME}/.vimrc ]; then
    mkdir -p ${BACKUPDIR}
    elog "INFO" "Found ${HOME}/.vimrc"
    elog "INFO" "Moving ${HOME}/.vimrc to ${BACKUPDIR}/..."
    mv ${HOME}/.vimrc ${BACKUPDIR}/ || elog "ERROR" "failed to move ${HOME}/.vimrc"
fi

if [ -h ${HOME}/.vimrc ]; then
    elog "INFO" "Found ${HOME}/.vimrc"
    old_link=`readlink ${HOME}/.vimrc`
    elog "INFO" "Removing ${HOME}/.vimrc (links to ${old_link})"
    rm ${HOME}/.vimrc || elog "ERROR" "failed to remove ${HOME}/.vimrc"
fi

tar -C ${HOME} -x -f ${LOCALINSTALLER} || elog "ERROR" "failed to extract ${LOCALINSTALLER}"

ln -s ${HOME}/.vim/vimrc ${HOME}/.vimrc || elog "ERROR" "failed to create link ${HOME}/.vimrc"

rm -fr ${TMPDIR} || elog "ERROR" "failed to remove ${TMPDIR}"

echo -e "\nVim installed successfully!"

exit 0