#!/usr/bin/env bash

source "${PALUDIS_EBUILD_DIR}/echo_functions.bash"

old_set=$-
set -a
for f in ${PALUDIS_BASHRC_FILES}; do
    [[ -f "${f}" ]] && source "${f}"
done
[[ "${old_set}" == *a* ]] || set +a

LOCAL=
REMOTE=

CVS_OPTIONS=( )
CVS_CHECKOUT_OPTIONS=( )

while [[ $# -gt 0 ]]; do
    case "${1}" in

        --cvs-option=*)
            CVS_OPTIONS[${#CVS_OPTIONS[@]}]="${1#*=}"
            ;;

        --cvs-checkout-option=*)
            CVS_CHECKOUT_OPTIONS[${#CVS_CHECKOUT_OPTIONS[@]}]="${1#*=}"
            ;;

        --help)
            PROTO="${0##*/do}"
            if [[ "${PROTO}" == cvs+pserver || "${PROTO}" == cvs+ext || "${PROTO}" == cvs+ssh ]]; then
                echo "    URL syntax: ${PROTO}://[USERNAME[:PASSWORD]@]SERVER:/PATH:MODULE"
            else
                ewarn "URL syntax for ${PROTO} is unknown.  This script will likely not work with the ${PROTO} protocol"
            fi

            echo "    Options:"
            echo "        --cvs-option=OPTION             Pass OPTION to cvs as a global option"
            echo "        --cvs-checkout-option=OPTION    Pass OPTION to cvs checkout"
            exit 0
            ;;

        --*)
            ewarn "${0}: unknown option '${1%%=*}'"
            ;;

        *)
            if [[ -z "${LOCAL}" ]]; then
                LOCAL="${1}"
            elif [[ -z "${REMOTE}" ]]; then
                REMOTE="${1}"
            else
                eerror "${0}: extra argument '${1}'"
                exit 1
            fi
            ;;

    esac
    shift
done

if [[ -z "${LOCAL}" ]]; then
    eerror "${0}: unspecified local repository directory"
    exit 1
elif [[ -z "${REMOTE}" ]]; then
    eerror "${0}: unspecified remote repository URL"
    exit 1
fi

PSERVER=false
SERVER="${REMOTE}"
if [[ "${SERVER}" == cvs+pserver* ]]; then
    PSERVER=true
    SERVER=":pserver:${SERVER#cvs+pserver://}"
elif [[ "${SERVER}" == cvs+ssh* || "${SERVER}" == cvs+ext* ]]; then
    SERVER=":ext:${SERVER#cvs+???://}"
fi

MODULE="${SERVER##*:}"
if [[ "${MODULE}" == "${SERVER}" ]]; then
    eerror "'${REMOTE}' is not a valid URL for a CVS repository"
    exit 1
fi
CVSROOT="${SERVER%:*}"

LOCAL=${LOCAL%/}
WORKING="${LOCAL%/*}"
[[ ! -d "${WORKING}" ]] && mkdir -p "${WORKING}"
cd "${WORKING}" &&
    ( ! ${PSERVER} || ${CVS_WRAPPER} cvs "${CVS_OPTIONS[@]}" -d "${CVSROOT}" login ) &&
    ${CVS_WRAPPER} cvs -d "${CVSROOT}" "${CVS_OPTIONS[@]}" checkout \
        -P -d "${LOCAL##*/}" "${CVS_CHECKOUT_OPTIONS[@]}" "${MODULE}"

