symlink-setup.sh

#!/bin/bash

# Install iterm2 shell integration
curl -L https://iterm2.com/shell_integration/zsh -o .iterm2_shell_integration.zsh


#
# utils !!!
#


answer_is_yes() {
    [[ "$REPLY" =~ ^[Yy]$ ]] \
        && return 0 \
        || return 1
}

ask() {
    print_question "$1"
    read
}

ask_for_confirmation() {
    print_question "$1 (y/n) "
    read -n 1
    printf "\n"
}

execute() {
    $1 &> /dev/null
    print_result $? "${2:-$1}"
}


print_error() {
    # Print output in red
    printf "\e[0;31m  [✖] $1 $2\e[0m\n"
}


print_question() {
    # Print output in yellow
    printf "\e[0;33m  [?] $1\e[0m"
}

print_result() {
    [ $1 -eq 0 ] \
        && print_success "$2" \
        || print_error "$2"

    [ "$3" == "true" ] && [ $1 -ne 0 ] \
        && exit
}

print_success() {
    # Print output in green
    printf "\e[0;32m  [✔] $1\e[0m\n"
}

#
# actual symlink stuff
#

# finds all .dotfiles in this folder
declare -a FILES_TO_SYMLINK=$(find . -type f -maxdepth 1 -name ".*" -not -name .DS_Store -not -name .git -not -name .osx | sed -e 's|//|/|' | sed -e 's|./.|.|')

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

main() {

    local i=""
    local sourceFile=""
    local targetFile=""

    for i in ${FILES_TO_SYMLINK[@]}; do

        sourceFile="$(pwd)/$i"
        targetFile="$HOME/$(printf "%s" "$i" | sed "s/.*\/\(.*\)/\1/g")"

        if [ -e "$targetFile" ]; then
            if [ "$(readlink "$targetFile")" != "$sourceFile" ]; then

                ask_for_confirmation "'$targetFile' already exists, do you want to overwrite it?"
                if answer_is_yes; then
                    rm -rf "$targetFile"
                    execute "ln -fs $sourceFile $targetFile" "$targetFile → $sourceFile"
                else
                    print_error "$targetFile → $sourceFile"
                fi

            else
                print_success "$targetFile → $sourceFile"
            fi
        else
            execute "ln -fs $sourceFile $targetFile" "$targetFile → $sourceFile"
        fi

    done

}

main