#! /bin/bash
# vim: set tabstop=4 shiftwidth=4 expandtab filetype=sh:

decToHex () {
# converts single-byte decimal value to hexadecimal equivalent
# arg: decimal value from 0-255
# out: two-digit hex value from 00-FF
#exit: 8=extraneous arg, 11=missing arg, 21=invalid arg
    [[ $arg1 ]] || return 11
    [[ $2 ]] && return 8
    [[ ( $(printf %d "$arg1" 2> /dev/null) == $arg1 ) \
        && ( $arg1 -ge 0 ) && ( $arg1 -le 255 ) ]] || return 21
    # args are valid
    printf %02X "$arg1"
}

echoerr() {
    echo "$@" 1>&2;
}

helpExit () {
    if [[ -s $acmdStdErr ]]; then
        if [[ $(grep CommandLineHelp $acmdStdErr) ]]; then
            grep -v ^-[pge][[:space:]] $acmdStdErr | grep -v '^    or' | grep -v 0x2000 1>&2
            echoerr "-g  <imagename> <filename> [<outputFilename>] copy filename out of any"
            echoerr "    disk image. Using - for outputFilename will copy to stdout."
            echoerr "-e  <imagename> <filename> [<outputFilename>] like -g, with conversion"
            echoerr "    to modern file format if possible."
            echoerr "-p  <imagename> <filename> [[$|0x]<type>] [[$|0x]<auxtype>] copy filename"
            echoerr "    into ProDOS disk image. <type> is either three-letter or numeric"
            echoerr "    ProDOS file type (BIN if omitted). Will read from stdin if supplied."
            echoerr "    ProDOS subdirectories in <filename> will be created if needed."
            echoerr "-c  <filename> <imagename> [[$|0x]<type>] [[$|0x]<auxtype>] synonym for -p"
            echoerr "    with filename and imagename reversed."
        else
            cat $acmdStdErr
        fi
        if [[ $arg1 == "-h" ]]; then
            exitVal=0
        else
            exitVal=1
        fi
    else
        if [[ $vsd1_md5 && ( "$vsd1_md5" != "$(md5sum /usr/local/adtpro/disks/Virtual.po)" || "$vsd2_md5" != "$(md5sum /usr/local/adtpro/disks/Virtual2.po)" ) ]]; then
            if [[ "$vsd1_md5" != "$(md5sum /usr/local/adtpro/disks/Virtual.po)" || "$vsd2_md5" != "$(md5sum /usr/local/adtpro/disks/Virtual2.po)" ]]; then
                echoerr "One of the virtual drive image files has changed while ADTPro server is active."
                echoerr "    If using VSDRIVE, type 'vsdsync' now to see changes and prevent corruption."
            fi
        fi
        exitval=0
    fi
    rm $acmdStdErr &> /dev/null
    exit $exitVal
}

arg1=$1

acmdStdErr="/tmp/acmd_$RANDOM$RANDOM"

[[ -f /usr/local/adtpro/adtpro.sh ]] && adtPath="/usr/local/adtpro" || adtPath=$(ls -1d /Applications/ADTPro* | head -1);

if [[ ! $2 || $arg1 == "-h" ]]; then
    java -jar "$adtPath"/lib/AppleCommander/AppleCommander-ac.jar 2> $acmdStdErr
    [[ $? -eq 127 ]] && exit 127 || helpExit $arg1
fi

if [[ $arg1 != "-i" && $arg1 != "-ls" && $arg1 != "-l" && $arg1 != "-ll" && $arg1 != "-x" && $arg1 != "-g" && $arg1 != "-e" && $(ps aux | grep [A]DTPro) ]]; then
    vsd1_md5="$(md5sum /usr/local/adtpro/disks/Virtual.po)"
    vsd2_md5="$(md5sum /usr/local/adtpro/disks/Virtual2.po)"
fi

if [[ ( $arg1 == "-p" || $arg1 == "-c" || $arg1 == "-g" || $arg1 == "-e" ) && $2 && $3 ]]; then

    getArg=
    if [[ $arg1 == "-p" ]]; then
        prodosArg="$3"
        imageArg="$2"
    elif [[ $arg1 == "-c" ]]; then
        prodosArg="$2"
        imageArg="$3"
    elif [[ $arg1 == "-g" || $arg1 == "-e" ]]; then
        fileArg="$3"
        imageArg="$2"
        getArg="$arg1"
    else
        exit 2;
    fi

    shift

    if [[ $getArg ]]; then # get file
        outFile=
        [[ $3 && $3 != "-" ]] && outFile="$3"
        [[ ! $3 ]] && outFile="${2##*/}"
        java -Xmx128m -jar "$adtPath"/lib/AppleCommander/AppleCommander-ac.jar $getArg "$imageArg" "$fileArg" $outFile 2> $acmdStdErr
    else # put file

        # test ProDOS name legitimacy
        prodosPath=$(tr [:lower:] [:upper:] <<< $prodosArg )
        IFS_orig="$IFS"; IFS="/";
        prodosPathParts="$prodosPath"
        for thisProdosPathPart in $prodosPathParts; do
            if [[ ${#thisProdosPathPart} -gt 15 || ! $(grep ^[A-Z][0-9A-Z\.]*$ <<< $thisProdosPathPart) ]]; then
                echoerr "Invalid ProDOS name: $prodosPath"; exit 1;
            fi
        done
        IFS="$IFS_orig"

        # process filetype
        [[ ${3:0:2} == "0x" ]] && ftArg="\$${3:2}" || ftArg="$3"
        auxType="$4"

        # assume BIN/$2000 if filetype omitted
        if [[ ! $ftArg ]]; then
            ft="BIN"
            auxType="\$2000"
        # accept hex or decimal number for file type
        elif [[ ( ${ftArg:0:1} == '$' && ${#ftArg} -eq 3 ) || $(grep [0-9] <<< ${ftArg:0:1}) ]]; then
            if [[ ${ftArg:0:1} == '$' ]]; then
                fc=$(tr [:upper:] [:lower:] <<< ${ftArg:1:2})
            else
                fc=$(decToHex $ftArg | tr [:upper:] [:lower:])
            fi
            P_00=UNK; P_01=BAD; P_02=PCD; P_03=PTX; P_04=TXT; P_05=PDA; P_06=BIN; P_07=FNT; P_08=FOT; P_09=BA3; P_0a=DA3; P_0b=WPF; P_0c=SOS; P_0f=DIR; P_10=RPD; P_11=RPI; P_12=AFD; P_13=AFM; P_14=AFR; P_15=SCL; P_16=PFS; P_19=ADB; P_1a=AWP; P_1b=ASP; P_20=TDM; P_21=IPS; P_22=UPV; P_29=3SD; P_2a=8SC; P_2b=8OB; P_2c=8IC; P_2d=8LD; P_2e=P8C; P_41=OCR; P_42=FTD; P_50=GWP; P_51=GSS; P_52=GDB; P_53=DRW; P_54=GDP; P_55=HMD; P_56=EDU; P_57=STN; P_58=HLP; P_59=COM; P_5a=CFG; P_5b=ANM; P_5c=MUM; P_5d=ENT; P_5e=DVU; P_60=PRE; P_6b=BIO; P_6d=DVR; P_6e=PRE; P_6f=HDV; P_80=GEZ; P_81=GE1; P_82=GEO; P_83=GE3; P_84=GE4; P_85=GE5; P_86=GE6; P_87=GE7; P_88=GE8; P_89=GE9; P_8a=GEA; P_8b=GEB; P_8c=GEC; P_8d=GED; P_8e=GEE; P_8f=GEF; P_a0=WP_; P_ab=GSB; P_ac=TDF; P_ad=BDF; P_b0=SRC; P_b1=OBJ; P_b2=LIB; P_b3=S16; P_b4=RTL; P_b5=EXE; P_b6=STR; P_b7=TSF; P_b8=NDA; P_b9=CDA; P_ba=TOL; P_bb=DRV; P_bc=LDF; P_bd=FST; P_bf=DOC; P_c0=PNT; P_c1=PIC; P_c2=ANI; P_c3=PAL; P_c5=OOG; P_c6=SCR; P_c7=CDV; P_c8=FON; P_c9=FND; P_ca=ICN; P_d5=MUS; P_d6=INS; P_d7=MDI; P_d8=SND; P_db=DBM; P_e0=SHK; P_e2=DTS; P_ee=R16; P_ef=PAS; P_f0=CMD; P_f9=P16; P_fa=INT; P_fb=IVR; P_fc=BAS; P_fd=VAR; P_fe=REL; P_ff=SYS;
            ftVar="P_$fc";
            [[ ${!ftVar} ]] && ft=${!ftVar} || ft="\$$fc";
        else
            ft="$ftArg"
        fi

        # set auxtype to $0801 for Applesoft programs if not specified
        [[ $ft == "BAS" && ! $auxType ]] && auxType="\$0801"

        # test for absence of stdin [[ -t 0 ]] and if absent use ProDOS name
        if [[ -t 0 ]]; then
            [[ ! -f $prodosArg ]] && { echoerr "$prodosArg not found."; exit 1; }
            java -Xmx128m -jar "$adtPath"/lib/AppleCommander/AppleCommander-ac.jar -d "$imageArg" $prodosPath &> /dev/null
            java -Xmx128m -jar "$adtPath"/lib/AppleCommander/AppleCommander-ac.jar -p "$imageArg" $prodosPath $ft $auxType < $prodosArg 2> $acmdStdErr
        else
            java -Xmx128m -jar "$adtPath"/lib/AppleCommander/AppleCommander-ac.jar -d "$imageArg" $prodosPath &> /dev/null
            java -Xmx128m -jar "$adtPath"/lib/AppleCommander/AppleCommander-ac.jar -p "$imageArg" $prodosPath $ft $auxType 2> $acmdStdErr
        fi
    fi

else

    imageArg="$2"
    java -Xmx128m -jar "$adtPath"/lib/AppleCommander/AppleCommander-ac.jar "$@" 2> $acmdStdErr

fi

helpExit