#!/usr/bin/env bash
# dwg -> dxf
# teigha dxf -> dwg
# dxf -> dwg2
# teigha dwg2 -> dxf2
v=-v4
case $1 in
    -v*)
        v="$1"
        shift
        ;;
esac
d="${1:-example_2000}"
b="$(basename "$d" .dwg)"
dir="$(dirname "$d")"
r="$(basename "$dir")"
exitcode=0
DEBUG_CLASSES=

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 $r in
    9|10|11|12|13|14|2000|2004|2007|2010|2013|2018) ;;
    *) make -s -C examples odaversion
       r="$(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 -y "$v" "$d"; then
    exit 2
fi
if [ -f "$b.dxf" ]; then
    mv "./$b.log" "$b.dwg2dxf.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 $r in
        1\.*)    can_teigha=0 ;;
        2\.*)    can_teigha=0 ;;
        11)      r=12 ;;
    esac
    test -z "$r" && can_teigha=0

    if [ -x "$TeighaFileConverter" ] && [ "$can_teigha" = "1" ]; then
        echo timeout 30 "$baseFileConverter" . . "ACAD$r" DWG 0 1 "$b.dxf"
        timeout 30 "$TeighaFileConverter" . . "ACAD$r" DWG 0 1 "$b.dxf" \
                >/dev/null 2>/dev/null
        if [ -e "./$b.dxf.err" ]; then
            cat "$b.dxf.err"
            exitcode=1
        fi
        mv -f "$b.dwg" "$b.oda.dwg"
    fi
    if ! ./dwg -y "$v" "$b.dxf"; then
        exit 2
    fi
fi

if [ -f "$b.dwg" ]; then
    if [ -x "$TeighaFileConverter" ] && [ "$can_teigha" = "1" ]; then
        echo timeout 30 "$baseFileConverter" . . "ACAD$r" DXF 0 1 "$b.dwg"
        timeout 30 "$TeighaFileConverter" . . "ACAD$r" DXF 0 1 "$b.dwg" \
                >/dev/null 2>/dev/null
        if [ -e "./$b.dxf.err" ]; then
            cat "$b.dxf.err"
            exitcode=3
        fi
    else
        rm "$b.dxf.err" 2>/dev/null
        if [ ! -x "$TeighaFileConverter" ]; then
            echo "$baseFileConverter not installed"
        fi
    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 "$b.dxf.err" && cat "$b.dxf.err"

    if [ -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 "$DEBUG_CLASSES" ]; then
            # We dont write unstable entities yet. WIPEOUT is converted to POINT in encode, but skipped at out_dxf
            grep -E '^Add entity' "$log1" |
                grep -E -v 'entity (WIPEOUT|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