#!/bin/bash

# Save this file as ~/.config/yadm/bootstrap and make it executable. It expects
# environment variable `file` with a name of shell script to execute.
# `file` can be relative to ~/.config/yadm/ or has full path.
#
#  Usage:
#    file=install yadm bootstrap
#  or
#    file=~/.config/yadm/install yadm bootstrap
#
# where `~/.config/yadm/install` can be like this:
#
# [[ ! $(type -t install) = 'function' ]] && echo "Usage: file=$(basename "$0") yadm bootstrap" && exit 1
#
# confirm yes 'softwareupdate --agree-to-license --install --all' "$(info 'Install ' warning 'OSX updates')"
# install 'brew' '/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"'
#
# brew bundle --global
#

TEXT_COLOR_RED=$(tput setaf 1)
TEXT_COLOR_GREEN=$(tput setaf 2)
TEXT_COLOR_BLUE=$(tput setaf 4)
TEXT_COLOR_YELLOW=$(tput setaf 3)
TEXT_DEFAULT=$(tput sgr0)

info() {
	printf "${TEXT_COLOR_BLUE}%s${TEXT_DEFAULT}" "$1"; "${@:2}"
}

error() {
	printf "${TEXT_COLOR_RED}%s${TEXT_DEFAULT}" "$1"; "${@:2}"
}

success() {
	printf "${TEXT_COLOR_GREEN}%s${TEXT_DEFAULT}" "$1"; "${@:2}"
}

warning() {
	printf "${TEXT_COLOR_YELLOW}%s${TEXT_DEFAULT}" "$1"; "${@:2}"
}

source_if_exists() {
	local src=$1
	local verbose="${2:-no}"

	[[ ! -f $src ]] && return 1;
	[[ "${verbose:0:1}" == v* ]] && printf "%s\n\n" "$(info "-> $src")";
	source "$src"
}

command_exists () {
	command -v "$1" &> /dev/null
}

# install a 'command' via 'code' if it was not previously installed yet
install() {
	local command=$1
	local code=$2
	local message=$(info 'Installing ' warning "$command")

	if command_exists "$command"; then
		echo "$message...[$(success 'already')]"
	else
		echo "$message..."
		eval "$code"
	fi
}

# execute a 'code' after confirmation from user
confirm() {
	local default_answer="${1:-no}"
	local code=$2
	local message=$3
	local options answer

	if [[ "${default_answer:0:1}" == y* ]]; then
		options="$(success 'YES')/no"
	else
		options="yes/$(success 'NO')"
	fi

	read -r -p "${message} [${options}]:" answer
	answer=${answer:-$default_answer}

	if [[ "${answer:0:1}" == y* ]]; then
		eval "$code"
	fi
}

source_if_exists "$(dirname "${0}")/$file" v ||
source_if_exists $file v ||
([[ -z $file ]] && echo "Usage: file=FILENAME yadm bootstrap" || echo "Can't locate file '$file' for bootstrapping")