#!/usr/bin/env bash
#
# install.sh
#
# Installs dotfiles and packages for my setup.
# Needs to be invoked from containing dotfile directory to work correctly.
#
# Will first install yay, then all my used packages (read from bootstrap/packages.txt)
#
# Finally, symlinks all dotfiles into their correct locations using stow

bootstrap_dir="${BOOTSTRAP_DIRECTORY:-./bootstrap}"

main() {
    local cmd=""
    local ret=0

    case "$1" in
    -v | --version)
        printf "Personal system bootstrap script.\n\n©Marty Oehme\n\nVersion: 0.1.1\n"
        ;;
    -h | --help)
        printf "Usage: install [-f|--force][-v|--version][-h|--help]\n\n-f     Do not ask for any confirmations but force update and installation.\n"
        ;;
    -f | --force)
        install true
        ;;
    *)
        install false
        ;;
    esac
    shift

    $cmd "$@"
    ret=$((ret + $?))
    exit $ret
}

check_consent() {
    echo "This will take a while, install many packages and link dotfiles all over the place. Proceed [y/N]?"
    read -r yes
    if [[ "$yes" != y* ]]; then
        echo "Exiting."
        exit
    fi
}

enable_git_hooks() {
    if [ "$1" == "false" ]; then
        echo "Should we enable git hooks for this repository, so that installed packages are automatically compared when committing? [Y/n]"
        read -r no
        if [[ "$no" == n* ]]; then
            echo "Not changing repository settings."
            return
        fi
    fi
    git config --local core.hooksPath .githooks/
    echo "Changed repository settings."
}

install() {
    unattended=$1
    if ! "$unattended"; then
        check_consent
    fi
    echo "====================== BEGINNING INSTALLATION ============================="
    if ! "$unattended"; then
        export BOOTSTRAP_PACKAGES="bootstrap/packages.txt"
        "$bootstrap_dir"/install_packages.sh
    else
        export BOOTSTRAP_PACKAGES="bootstrap/packages.txt"
        "$bootstrap_dir"/install_packages.sh -f
    fi
    unset BOOTSTRAP_PACKAGES

    echo "=================== BEGINNING DOTFILE MANAGEMENT =========================="
    # get all top level directories, remove their slashes and dots
    # finally get rid of .dot-directories, since they are for the repo not for my homedir
    targets="$(find . -maxdepth 1 -type d | sed -e 's/^\.\/\(.*\)$/\1/' | sed -e '/^\./d')"

    # shellcheck disable=2086
    # -- for some reason stow only works with unqoted var expansion
    stow -R ${targets} 2> >(grep -v 'Absolute/relative mismatch between Stow dir' 1>&2)

    echo "================== ENABLING GIT REPOSITORY HOOKS =========================="
    enable_git_hooks "$unattended"

    echo "====================== INSTALLATION FINISHED =============================="
    exit 0
}

main "$@"