#!/bin/bash

. "$(shellfu-get path)" || exit 3

shellfu import pretty

usage() {
    mkusage "newmail" \
            "rewind" \
            "cleanup" \
         -- "newmail - check for and file new mail" \
            "rewind - re-add messages from FILTER_FAIL back" \
            "       to FILTER_QUEUE" \
            "cleanup - delete or archive old messages"
}

mkcmd() {
    #
    # Compose imapfilter command
    #
    echo -n "IMAPDOMO_ACTION=$Action"
    echo -n "  IMAPFILTER_HOME=$CfgDir"
    echo -n "  imapfilter"
    if $Debug
    then
        mkdir -p "$LogDir"
        echo -n "  -d $LogDir/debug.log"
        echo -n "  -v"
    fi
    echo -n "  -c $CfgDir/main.lua"
}

main() {
    local Action    # what to do
    local Debug     # true if debugging
    local cmd       # imapfilter command
    local CfgDir    # config directory
    local LogDir    # directory to store logs
    local CdTo      # change dir to this before running imapfilter
    CfgDir="$HOME/.imapdomo"
    LogDir="$HOME/.cache/imapdomo/logs"
    Debug=false
    while true; do case $1 in
        -c) CdTo="$2"; shift 2 || usage ;;
        -d) Debug=true; SHELLFU_DEBUG=true; shift ;;
        -*) usage ;;
        *)  break ;;
    esac done
    Action="$1"; shift
    grep -qw "$Action" <<< "newmail|rewind|cleanup" || usage
    cmd=$(mkcmd)
    debug -v cmd
    bash -n <<<"$cmd" || die
    if test -n "$CdTo";
    then
        cd "$CdTo" || die
    fi
    eval "$cmd"
}

main "$@"