combish-cli

## TODO: How to add this as a combish script itself to ease maintenance?
##
#!/bin/bash

cmd=$1       ## 'build', 'detach' and 'generate' only supported for now.
             ## TODO: Add 'help' and 'del' to ease cleanup.
             ##       'integ' for "detached" ones that got maintained
             ##        separately for some time and must be re-integrated
src=$2
more_opt=$3  ## used as 2nd parameter to cmd, to add an option to "init/00/<src>/modifiers.bash.inc"
             ##  e.g. script_group=psefilters/bin/utils

COMBISH_ROOTDIR=$(cd "$(dirname "${BASH_SOURCE[1]}")" && pwd)
BUILD_ROOTDIR="${COMBISH_ROOTDIR}/build"
INIT_ROOTDIR="${COMBISH_ROOTDIR}/init"
LIB_ROOTDIR="${COMBISH_ROOTDIR}/lib"
MAIN_ROOTDIR="${COMBISH_ROOTDIR}/main"
DETACHED_ROOTDIR="${BUILD_ROOTDIR}/detach/${src}"

usage_syntax() {
    echo 'Usage: combish-cli <cmd> <src_name>'
    echo 'Following commands are supported:'
    echo ' * build'
    echo ' * detach'
    echo ' * generate'
    echo
    exit 1
} ## END: usage_syntax()

## Missing $src is a blocker ...
##
if [[ $# -lt 2 ]]; then
    echo 'ERROR: Too few parameters, aborted!'
    usage_syntax
    echo 'Available projects:'
    for x in $(ls -1d $MAIN_ROOTDIR/*); do
        echo "* $(basename $x)"
    done
    echo
    exit 1
fi

## dir2git - Add a simple file to a directory to make it eligible for git commit
##
dir2git() {
    local dir2mark=$1

cat > ${dir2mark}/.gitignore << EOL

# Ignore everything in this directory
#~*
# Except this file
!.gitignore
EOL

} ## END: dir2git()

create_detached_runner() {
    local src=$1

cat > $DETACHED_ROOTDIR/run_${src}.sh << EOL
    #!/bin/bash

    COMBISH_ROOTDIR=\$(cd "\$(dirname "\${BASH_SOURCE[1]}")" && pwd)

    ## Source the core code ...
    ##
    source \$COMBISH_ROOTDIR/init/00/combish.bash.inc

    ## call it..
    combish $src
EOL

} ## END: create_detached_runner()

create_default_main() {
    local src=$1

cat > $MAIN_ROOTDIR/${src}/main.bash.inc << EOL

main() {
:
} ## END: main()

main
EOL
} ## END: create_default_main()

case $cmd in
    build)
        ## -------------------------------------
        ## source specified, proceed below ...
        ## -------------------------------------

        ## Source the core code ...
        ##
        source $INIT_ROOTDIR/00/combish.bash.inc

        ## call it..
        combish $src
    ;;

    detach)
	DETACHED_ROOTDIR="${BUILD_ROOTDIR}/detach/${src}"
        mkdir -p ${DETACHED_ROOTDIR}/build

	## Copy all "init/00" (since detached on cannot function without combish tooling)
	rsync -avz ${INIT_ROOTDIR}/00 ${DETACHED_ROOTDIR}/init/
        ## Copy all "init/01/${src}
	rsync -avz ${INIT_ROOTDIR}/01/${src} ${DETACHED_ROOTDIR}/init/01/
        ## Copy all "init/10/${src}"
	rsync -avz ${INIT_ROOTDIR}/10/${src} ${DETACHED_ROOTDIR}/init/10/
        ## Copy all "init/10/common"
	## TODO: Restrict copying to common.txt
	rsync -avz ${INIT_ROOTDIR}/10/common ${DETACHED_ROOTDIR}/init/10/
        ## Copy all "lib/${src}"
	rsync -avz ${LIB_ROOTDIR}/${src} ${DETACHED_ROOTDIR}/lib/
        ## Copy all "lib/common" (but only the ones specified in earlier common.txt
	## TODO: Restrict copying to common.txt
	rsync -avz ${LIB_ROOTDIR}/${common} ${DETACHED_ROOTDIR}/lib/
        ## Copy all "main/${src}"
	rsync -avz ${MAIN_ROOTDIR}/${src} ${DETACHED_ROOTDIR}/main/

	## TODO: Create run_${src}.sh as runner
	create_detached_runner $src
    ;;

    generate)
	## Check first that <src> isn't an existing one.
	##
        src_main="${MAIN_ROOTDIR}/${src}"
	if [[ -d ${src_main} ]]; then
	    echo "ERROR: Cannot proceed. '${src}' already exist."
	    exit 1
	fi

	## No duplicate src? Proceed
	## TODO: Add some readme as guide on what each dir is for
        gen_list="
        ${INIT_ROOTDIR}/01/${src}
        ${INIT_ROOTDIR}/10/${src}
        ${LIB_ROOTDIR}/${src}
        ${src_main}
        "
        for each_item in $gen_list; do
            mkdir -pv $each_item
            dir2git $each_item  ## make it eligible for 'git add'
        done
        ## add default main script
        create_default_main ${src}

        ## $more_opt given? Process it
        if [[ "$more_opt" != "" ]]; then
            modifier_rootdir=${INIT_ROOTDIR}/00/${src}
            mkdir -p $modifier_rootdir
            MODIFIER_FILE=${modifier_rootdir}/modifiers.bash.inc
            ## sed part re-adds the single quotes auto-stripped-off in bash script
            echo $more_opt | sed "s/\([a-z_0-9]*=\)\(.*\)/\1'\2'/" > $MODIFIER_FILE
        fi
    ;;

    *)
        echo 'ERROR: Unrecognized command.'
	usage_syntax
    ;;
esac