zsh/install.bash

#!/usr/bin/env bash

BOLD=$(tput bold)
M_COLOR=$(tput setaf 5)
CYAN=$(tput setaf 6)
YELLOW=$(tput setaf 3)
RED=$(tput setaf 1)
RESET=$(tput sgr0)
RESET_BOLD="${RESET}${BOLD}"

log() {
	# Print a message and send it to stdout or stderr depending upon log level, also configurable with debug etc.
	#
	# Arguments:
	#   level <type: string> <position: 1> <required: true>
	#     - The log level, defined within a case check in this function
	#   message <type: string> <position: 2> <required: true>
	#     - The info message
	#
	# Usage:
	#   log "info" "Could not find that directory"
	#
	# POSIX Compliant:
	#   Yes
	#

	# Convert the level to uppercase
	local level
	level=$(printf "%s" "${1}" | tr '[:lower:]' '[:upper:]')

	local message
	message="${2}"

	local prefix="${M_COLOR}Installer${RESET} - "

	case "${level}" in
	INFO)
		printf "%s%sINFO:%s %s%s%s\n" \
			"${prefix}" \
			"${CYAN}" \
			"${RESET}" \
			"${BOLD}" \
			"${message}" \
			"${RESET}" >&2
		return 0
		;;
	WARN*)
		printf "%s%sWARN:%s %s%s%s\n" \
			"${prefix}" \
			"${YELLOW}" \
			"${RESET}" \
			"${BOLD}" \
			"${message}" \
			"${RESET}" >&2
		return 0
		;;
	ERROR)
		printf "%s%sERROR:%s %s%s%s\n" \
			"${prefix}" \
			"${RED}" \
			"${RESET}" \
			"${BOLD}" \
			"${message}" \
			"${RESET}" >&2
		return 0
		;;
		# Further log levels can be added by extending this switch statement with more comparisons

	esac
}

print-break() {
	printf "${M_COLOR}%.s─${RESET}" $(seq 1 "$(tput cols)")
}

main() {
	local installers_directory
	installers_directory="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &>/dev/null && pwd)/installers"
	local installers=()
	for installer in "${installers_directory}/"*; do
		log "info" "Found installer: ${M_COLOR}${installer}${RESET_BOLD}"
		installers+=("${installer}")
	done

	if ! ((${#installers[@]})); then
		log "error" "No installers found"
		exit 1
	fi

	# shellcheck disable=2155
	export SOURCE_DIR="$(
		# shellcheck disable=2046,2164
		cd $(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &>/dev/null && pwd)/dots
		pwd
	)"
	for installer in "${installers[@]}"; do
		log "info" "Running installer: ${M_COLOR}${installer}${RESET_BOLD}"
		if ! bash "${installer}"; then
			log "error" "Installer: ${M_COLOR}${installer}${RESET_BOLD} failed!"
			exit 2
		else
			log "info" "Finished running installer ${M_COLOR}${installer}${RESET_BOLD}"
		fi
	done
}

main