#!/bin/bash

missingCommands=""

nodeVersion=$(node --version 2>&1 | cut -d. -f1 | sed 's/v//')

if [ $? != 0 ]; then
    missingCommands="- node >= 8.0"
fi

vimVersion=$(vim --version | head -n 1 | sed -E 's/VIM - Vi IMproved ([^ ]+).+/\1/')
vimMajorVersion=$(echo $vimVersion | cut -d. -f1)
vimMinorVersion=$(echo $vimVersion | cut -d. -f2)

if [ "$missingCommands" != "" ]; then
    echo -e "You have to install the following commands before installing this extension:\n$missingCommands"
    exit 1
fi

stop=0

if [ "$nodeVersion" -lt "8" ]; then
    echo "This plugin requires NodeJS >= 8.0 (detected version $nodeVersion)."
    stop=1
fi

if [ "$vimMajorVersion" -lt "8" -o "$vimMajorVersion" -ge "8" -a "$vimMinorVersion" -lt "1" ]; then
    echo "This plugin requires VIM >= 8.1 (detected version $vimVersion)."
    stop=1
fi

if [ "$stop" -eq "1" ]; then
    exit 1;
fi

echo "Activating COC..."
cat ~/.vimrc | sed "s/\" Plugin 'neoclide\/coc.nvim'/Plugin 'neoclide\/coc.nvim'/" > ~/.vimrc.tmp
rm ~/.vimrc
mv ~/.vimrc.tmp ~/.vimrc
vim +PluginInstall +qall
vim "+call coc#util#install()" +qall

echo "COC is now ready for use!"
echo "If you like this plugin, don't forget to send your ♥ to its author: https://github.com/neoclide/coc.nvim"
echo "You can add support for your favourite languages by adding them: https://github.com/neoclide/coc.nvim/wiki/Language-servers#example-configuration-for-custom-language-servers"