#!/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=

RSYNC_OPTIONS=( )

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

        --exclude=*)
            RSYNC_OPTIONS[${#RSYNC_OPTIONS[@]}]=--exclude
            RSYNC_OPTIONS[${#RSYNC_OPTIONS[@]}]="${1#*=}"
            ;;

        --exclude-from=*)
            RSYNC_OPTIONS[${#RSYNC_OPTIONS[@]}]=--exclude-from
            RSYNC_OPTIONS[${#RSYNC_OPTIONS[@]}]="${1#*=}"
            ;;

        --rsync-option=*)
            RSYNC_OPTIONS[${#RSYNC_OPTIONS[@]}]="${1#*=}"
            ;;

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

            echo "    Options:"
            echo "        --exclude=PATTERN               Use PATTERN as an exclude pattern"
            echo "        --exclude-from=FILE             Use FILE as a list of exclude patterns"
            echo "        --rsync-option=OPTION           Pass OPTION to rsync"
            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

REMOTE="${REMOTE#file://}"
REMOTE="${REMOTE#rsync+ssh://}"

${RSYNC_WRAPPER} rsync --recursive --links --safe-links --perms --times \
    --compress --force --whole-file --delete --delete-after --stats --timeout=180 \
    ${PALUDIS_SYNC_FILTER_FILE:+--filter "merge ${PALUDIS_SYNC_FILTER_FILE}"} \
    --exclude=/.cache --progress "${RSYNC_OPTIONS[@]}" "${REMOTE%/}/" "${LOCAL}/"

