#!/usr/bin/env bash
# dwg -> dxfb
# dxfb -> dwg2
# teigha dxfb -> dwg (check out_dxfb)
# teigha dwg2 -> dxf (check in_dxf)
v=-v4
case $1 in
    -v*)
        v="$1"
        shift
        ;;
esac
d="${1:-example_2000}"
b="$(basename "$d" .dwg)"
dir="$(dirname "$d")"
r="$(basename "$dir")"
DEBUG_CLASSES=
exitcode=0

case $dir in
    *test/test-data)   ;;
    *test/test-data/*) b="${b}_${r}" ;;
    *td)               ;;
    *td/*)             b="${b}_${r}" ;;
    .)                 ;;
    *)                 b="${b}_${r}" ;;
esac
case $r in
    20*)          ;;
    r9)       r=9 ;;
    r11)      r=12 ;;
    r1[0234]) r=${r:1} ;;
    *)
        case $b in
            *_20*)      r=${b:(-4)} ;;
            *_r9)       r=9         ;;
            *_r11)      r=12        ;;
            *_r1[0234]) r=${b:(-2)} ;;
            *_R20*)     r="${b:(-4)}" ;;
        esac ;;
esac
case $r in
    9|10|11|12|14|2000|2004|2007|2010|2013|2018) ;;
    *) make -s -C examples odaversion
       r="$(examples/odaversion "$d")"
       ;;
esac

# first create a dwg log to compare against
./log "-l$b.log.orig" "$v" "$d"
rm "./$b.dxf" "./$b.dwg" 2>/dev/null

if ! ./dxf -b -y "$v" -o "$b.dxfb" "$d"; then
   exit 2
fi
if [ -f "$b.dxfb" ]; then
    mv "./$b.log" "$b.dwg2dxfb.log"
    # teigha can only write from r12-r2018
    can_teigha=1
    case $(uname) in
        Darwin)  TeighaFileConverter=/Applications/ODAFileConverter.app/Contents/MacOS/ODAFileConverter ;;
        Linux)   TeighaFileConverter=/usr/bin/ODAFileConverter ;;
        Windows) TeighaFileConverter=ODAFileConverter ;;
    esac
    baseFileConverter=ODAFileConverter
    if [ ! -x "$TeighaFileConverter" ]; then
        case $(uname) in
            Darwin)  TeighaFileConverter=/Applications/TeighaFileConverter.app/Contents/MacOS/TeighaFileConverter ;;
            Linux)   TeighaFileConverter=/usr/bin/TeighaFileConverter ;;
            Windows) TeighaFileConverter=TeighaFileConverter ;;
        esac
        baseFileConverter=TeighaFileConverter
    fi
    case $r in
        r2.*)     can_teigha=0 ;;
        r9)       can_teigha=0 ;;
        r1[01])   can_teigha=0 ;;
    esac
    test -n "$r" && can_teigha=0
    if [ -x "$TeighaFileConverter" ] && [ "$can_teigha" = "1" ]; then
        echo "$baseFileConverter . test ACAD$r DWG 0 1 $b.dxfb"
        $TeighaFileConverter "." "test" "ACAD$r" DWG 0 1 "$b.dxfb" \
                >/dev/null 2>/dev/null
        if [ -e "test/$b.dwg.err" ]; then
            mv "test/$b.dwg.err" "$b.dxfb2dwg.err"
            cat "$b.dxfb2dwg.err"
            exitcode=1
        fi
    else
        rm "$b.dxfb2dwg.err" 2>/dev/null
        if [ ! -x "$TeighaFileConverter" ]; then
            echo "$baseFileConverter not installed"
        fi
    fi

    if ! ./dwg -y "$v" "$b.dxfb"; then
        exit 1
    fi
fi

if [ -f "$b.dwg" ]; then
    if [ -x "$TeighaFileConverter" ]; then
        echo "$baseFileConverter . test ACAD$r DXF 0 1 $b.dwg"
        $TeighaFileConverter "." "test" "ACAD$r" DXF 0 1 "$b.dwg"
        mv "test/$b.dxf.err" "$b.dxfb.err"
        cat "$b.dxfb.err"
    else
        rm "$b.dxfb.err" 2>/dev/null
        echo "$baseFileConverter not installed"
    fi

    ./log "$v" "$b.dwg"
    log1="$b.log.orig"
    log2="$b.log"
    echo diff -bu "log1" "$log2"
    diff -I '^-(objref|found:)' -bu "$log1" "$log2"

    test -f "$b.dxfb.err" && cat "$b.dxfb.err"

    if false && [ -f "$log1" ] && [ -f "$log2" ]; then
        # Really interesting is the Section BLOCKS here. vs BLOCK_HEADER
        if grep -q '#define DEBUG_CLASSES' src/config.h; then
            DEBUG_CLASSES=1
        fi
        if [ -z "$DEBUG_CLASSES" ]; then
            # we dont write unstable entities yet.
            grep -E '^Add entity' "$log1" | grep -E -v 'entity (ARC_DIMENSION|HELIX|SECTIONOBJECT|UNKNOWN_ENT)' >"$log1.tmp"
        else
            grep -E '^Add entity' "$log1" |
                grep -E -v 'entity UNKNOWN_ENT' >"$log1.tmp"
        fi
        grep -E '^Add entity' "$log2" >"$log2.tmp"
        if diff -bu0 "$log1.tmp" "$log2.tmp" >/dev/null 2>/dev/null; then
            echo entities roundtrip ok
            rm "$log1.tmp" "$log2.tmp" 2>/dev/null
        else
            c1=$(grep -c entity "$log1.tmp")
            c2=$(grep -c entity "$log2.tmp")
            if [ "$c1" = "$c2" ]; then
                echo entities roundtrip in different order
                diff -I '^-(objref|found:)' -bu0 <(perl -lpe's/ \[.\d+\]//' "$log1.tmp" | sort -u) \
                          <(perl -lpe's/ \[.\d+\]//' "$log2.tmp" | sort -u)
            else
                echo "$b roundtrip failed, $c1 vs $c2 entities"
                diff -I '^-(objref|found:)' -bu0 "$log1.tmp" "$log2.tmp" | grep -v '^@@'
            fi
        fi
    fi
fi
exit $exitcode