#!/usr/bin/env bash

# Convenience script to create a C/C++ NeteBeans project.
# Copyright (C) 26.5.2025  Benny Lyons benny.lyons@gmx.net
# 
# nb_create.sh is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 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 General Public License for more details.
# 
# You should have received a copy of the GNU General Public License along with
# this program; if not, see <https://www.gnu.org/licenses/>.


#
# Default settings
#
# Default Git repository containing Makefile, NetBeans project file, ...
# Override this using -r my_repo.git; or reset this
DEFAULT_REPO="/home/benn/share/home/repo/netbeans_proj/netbeans_generic.git"

this_script=$(basename -- $0)
USE_PROGRAMME=git

help() {
        cat <<EOF

Usage: $this_script  [OPTIONS] params

       Convenience script to create C/C++ NetBeans projects.
       Create a generic NetBeans project from a Git repo.
       Project name, file containing main and a Git repo
       can be specified using command line options, or
       defaults can be used.

Options:
  -d [--debug]
     Add extra debugging infos
  -h [--help]
     print this help
  -m [--main] <name_of_file_containing_main>
     The name of the file that contains the main function
     default: name of the project
  -p [--project] <propject_name>
     Provide a name of the project instead of the default
     default: name of the current directory
  -r [--repo] <git_repo>
     The Git repo containing the NetBeans generic C/C++ project
     Default: /home/benn/share/home/repo/netbeans_proj/netbeans_generic.git

Licence:
  $this_script Copyright (C) 2025 Benny Lyons.
  GNU GPL2 or later; see LICENCE distributed with this file for more details.
EOF
}


if_no_dir_then_exit()
{
        exist_dir=$1
        message=$2

        if [ ! -d $exist_dir ]; then
                echo "ERROR: Can't find: "$exist_dir
                echo "       $message"
                exit 1
        fi
}


if_no_file_then_exit()
{
        exist_file=$1
        message=$2

        if [ ! -f $exist_file ]; then
                echo "ERROR: Can't find: "$exist_file
                echo "       $message"
                exit 1
        fi
}





main()
{
        OPT_DEBUG=False # By default, debugging is off
        
        OPT_ALL="$(getopt -o dhm:p:r: -l debug,help,main:,project:,repo: --name "$0" -- "$@")"
        eval set -- "$OPT_ALL"
        
        
        while true ; do
                case $1 in
                        -d | --debug) 
                                OPT_DEBUG=True
                                shift 
                                ;;
                        -h | --help) # Call help
                                help
                                exit 0
                                ;;
                        -m | --main)
                                OPT_MAIN=$2
                                ;;
                        -p | --project)
                                OPT_PROJECT=$2
                                #shift 2
                                ;;
                        -r | --repo ) 
                                OPT_REPO=$2
                                #shift 2
                                ;;    
                        --)
                                shift
                                break
                                 ;;
                        *)
                                echo "Invalid argument" >&2
                                exit 1
                                ;;
                esac
        done

        if [[ $OPT_DEBUG == "True" ]]; then
                trap 'echo "At line $LINENO:  $BASH_COMMAND"' DEBUG
        fi
        
        if ! command -v "${USE_PROGRAMME}"   > /dev/null; then
                echo "ERROR: cannot find " $USE_PROGRAMME
                echo "       You must install "$USE_PROGRAMME
                exit 1
        fi


        pwd="$PWD"
        
        #
        # Set defaults
        #     
        if [ -z $OPT_PROJECT ]; then
                PROJECT=$(basename $pwd)
        else
                PROJECT="$OPT_PROJECT"
        fi
        
        if [ -z $OPT_MAIN ]; then
                MAIN="$PROJECT"
        else
                MAIN="$OPT_MAIN"
        fi
        
        if [ -z $OPT_REPO ]; then
                REPO=$DEFAULT_REPO
        else
                REPO="$OPT_REPO"
        fi
        if [ ! -d "$REPO" ]; then
                echo "ERROR: can't find: "$REPO
                echo "Require a valid Git repository with a NetBeans project"
                echo "Use -r <path/to/valid/NB/git/repo to speicify one"
                exit 1
        fi


        #
        # Do
        #
        
        echo "Checking out repo..."
        cd $pwd
        # $(git clone $REPO .)

        if_no_dir_then_exit $pwd/nbproject "Not a NetBeans project"
        if_no_file_then_exit $pwd/nbproject/project.xml "Netbeans project without a configuration file!"


        if [ ! -f "compile_commands.json" ]; then
                echo "WARNING: ./compile_commands.json not found"
                echo "         Netbeans project without a compilation database"
                echo "         Target check2 will not work"
                echo "         Generate compilation database: bear -- make"
        else
                replace="directory"
                replacement="$pwd"
                sed -i "s%^\s*\"$replace\"\:.*%\"directory\"\:\ \"$replacement\"\,%g" compile_commands.json

                replace="file"
                replacement="$pwd""/src/${MAIN}.cpp"
                sed -i "s%^\s*\"$replace\"\:.*%\"file\"\:\ \"$replacement\"\,%g" compile_commands.json

                replace="output"
                replacement="$pwd""/obj/${MAIN}.obj"
                sed -i "s%^\s*\"$replace\"\:.*%\"output\"\:\ \"$replacement\"\,%g" compile_commands.json                
        fi
        

        exit 0
#        cd $pwd/nbproject
#        sed -i -e "s/\(<name>\).*\(<\/name>\(/<name>$PROJECT<\/name>/g" project.xml
#        
#        cd "$pwd"/src
#        if [ -f ./myapp.cpp ]; then
#                mv myapp.cpp "$MAIN".cpp
#        fi
}


main $@