setup

#!/usr/bin/env bash

do-setup() {
    if [[ -d .git ]]; then
        # check for dirty
        if git status --porcelain | grep -qe '^[^?!]'; then
            echo "Please commit or stash your changes before running setup"
            exit 65   # EX_DATAERR
        fi
    else
        echo "(Not using git?  Be sure to exclude .devkit and .deps from revision control)"
    fi

    # Create dotfiles
    for dot in .envrc .dkrc; do
        create-or-inform $dot sample$dot
    done

    # Create script/bootstrap, et al
    mkdir -p script
    create-or-inform script/bootstrap script/bootstrap
    create-or-inform script/README.md script/README.md no-inform
    chmod +x script/bootstrap

    for cmd in build cibuild clean console server setup test update; do
        if [[ -f script/$cmd && ! -L script/$cmd ]]; then
            echo "script/$cmd is not a symlink; please remove it"
        elif [[ ! -L script/$cmd ]]; then
            ln -s bootstrap script/$cmd
        fi
    done

    # Update .gitignore and add to revision control
    if [[ -d .git ]]; then
        for ignore in .deps .devkit; do
            if [[ ! -f .gitignore ]] || ! grep -q ^\\$ignore'\(\s\|$\)' .gitignore; then
                echo $ignore >>.gitignore
            fi
        done
        git add .gitignore .envrc .dkrc script/
    fi
    echo "devkit setup is complete; you can now commit the changes"
}

create-or-inform() {
    if ! [[ -f $1 ]]; then
        cat "${BASH_SOURCE%/*}/$2"  >"$1"
        [[ $1 == .envrc && "$(command -v direnv)" ]] && direnv allow
    elif [[ ! "${3-}" ]] && ! diff -q "$1" "${BASH_SOURCE%/*}/$2" >/dev/null; then
        echo "$1 already exists with different contents; please check against ${BASH_SOURCE%/*}/$2"
    fi
}

[[ $0 == $BASH_SOURCE ]] && do-setup "$@"