#!/bin/bash

# Copyright (C) 2022 Ortega Froysa, Nicolás <nicolas@ortegas.org>
# Author: Ortega Froysa, Nicolás <nicolas@ortegas.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

ISIDORE_VERSION="0.1.0"
ISIDORE_CONFIG_DIR=""
ISIDORE_CONFIG_DIR_OPTIONS=(
	"$XDG_CONFIG_HOME/isidore"
	"$HOME/.isidore")
ISIDORE_AUTHOR_NAME=""

##
# Create the configuration file. This function is called if it does not already
# exist.
##
function create_config_file()
{
	echo "Creating $ISIDORE_CONFIG_DIR/config file..."
	echo "Please enter the following..."
	echo -n "Author name: "
	read ISIDORE_AUTHOR_NAME
	echo "ISIDORE_AUTHOR_NAME=\"$ISIDORE_AUTHOR_NAME\"" > $ISIDORE_CONFIG_DIR/config
}

##
# Read the configuration file and set the basic config variables.
##
function set_config_vars()
{
	for i in "${ISIDORE_CONFIG_DIR_OPTIONS[@]}"
	do
		if [ -d $i ]
		then
			ISIDORE_CONFIG_DIR=$i
			break
		fi
	done

	if [ -z "$ISIDORE_CONFIG_DIR" ]
	then
		if [ -z "$XDG_CONFIG_HOME" ]
		then
			ISIDORE_CONFIG_DIR="$XDG_CONFIG_HOME/isidore"
		else
			ISIDORE_CONFIG_DIR="$HOME/.isidore"
		fi

		echo "Creating new Jerome configuration directory in $ISIDORE_CONFIG_DIR"
		mkdir -p $ISIDORE_CONFIG_DIR
		create_config_file
	fi

	if ! [ -f "$ISIDORE_CONFIG_DIR/config" ]
	then
		create_config_file
	fi
	source $ISIDORE_CONFIG_DIR/config
}

function print_usage()
{
	echo "USAGE: $1 <command> [options]"
}

##
# Check to see if at the root of an Isidore project.
##
function check_in_project()
{
	if ! [ -f "./config.php" ] || ! [ -f "./.isidore-version" ]
	then
		echo "ERROR: You are not currently in the root of an Isidore project."
		exit 1
	fi
}

##
# Create a new project.
#
# Params:
#  $1 - The project directory
#  $2 - The project name
##
function new_project()
{
	NEW_PROJECT_DIR=$1
	NEW_PROJECT_NAME=$2
	mkdir $NEW_PROJECT_DIR
	mkdir -p $NEW_PROJECT_DIR/site/
	mkdir -p $NEW_PROJECT_DIR/templates/
	echo \
"<?php
\$site_name = \"$NEW_PROJECT_NAME\";
\$author = \"$ISIDORE_AUTHOR_NAME\";
?>" >> $NEW_PROJECT_DIR/config.php
	echo "$ISIDORE_VERSION" > $NEW_PROJECT_DIR/.isidore-version
}

##
# Clean a project's build.
##
function clean_project()
{
	check_in_project
	if [ -d "./output/" ]
	then
		rm -r ./output/
	fi
	echo "Project cleaned."
}

set_config_vars

case $1 in
	new)
		new_project $2 $3;;
	clean)
		clean_project;;
	*)
		echo "Unknown command $1. Use the 'help' command."
		print_usage $0;;
esac