#!/bin/sh

set -e

check() {
    URL=$1
    RELEASE=$(basename $URL)
    WORKDIR=/tmp/apache-devlake-asf-check/$RELEASE
    mkdir -p $WORKDIR

    # Get files information
    METAFILE=$WORKDIR/meta
    if [ ! -f "$METAFILE" ]; then
        curl -L $URL | grep -oP 'href="\K(apache.+?)(?=")' > "$METAFILE"
        cat "$METAFILE"
    fi

    ARCHIVE=$(awk 'FNR == 1 {print}' $METAFILE)
    GPG_SIGN=$ARCHIVE.asc
    SHA_SUM=$ARCHIVE.sha512

    echo ARCHIVE: "$ARCHIVE"
    echo GPG_SIGN: "$GPG_SIGN"
    echo SHA_SUM: "$SHA_SUM"

    # Download files
    for FILE in "$ARCHIVE" "$GPG_SIGN" "$SHA_SUM"; do
        LOCAL_PATH=$WORKDIR/$FILE
        if [ ! -f "$LOCAL_PATH" ]; then
            FILE_URL=${URL%%/}/$FILE
            echo "Downloading from $FILE_URL"
            curl -o "$LOCAL_PATH" $FILE_URL
        else
            echo "$LOCAL_PATH exists"
        fi
    done

    # Uncompress archive
    ARCHIVE_PATH=$WORKDIR/$ARCHIVE
    SRC=$WORKDIR/${ARCHIVE%%.tar.gz}
    rm -rf $SRC
    tar xvf "$ARCHIVE_PATH" -C "$WORKDIR"
    echo SRC: "$SRC"

    # Checksums and signatures
    echo "** VERIFY CHECKSUM **"
    (cd $WORKDIR && sha512sum -c "$SHA_SUM" 1>&2)
    echo
    echo "** VERIFY SINGUATURES **"
    GPG_SIGN_PATH=$WORKDIR/$GPG_SIGN
    gpg --verify $GPG_SIGN_PATH $ARCHIVE_PATH 1>&2
    echo

    # LICENSE/NOTICE/DISCLAIMER files exist
    echo "** CHECK LICENSE NOTICE DISCLAIMER **"
    DISCLAIMER=DISCLAIMER
    test -s $SRC/LICENSE 1>&2 && echo LICENSE exists
    test -s $SRC/NOTICE 1>&2 && echo NOTICE exists
    if test -s $SRC/DISCLAIMER-WIP 1>&2 && echo DISCLAIMER-WIP exists; then
        DISCLAIMER=DISCLAIMER-WIP
        ! test -s $SRC/DISCLAIMER
    else
        test -s $SRC/DISCLAIMER 1>&2 && echo DISCLAIMER exists
    fi
    echo


    # check unexpected binary files
    echo "** CHECK UNEXPRECTED BINARY FILES **"
    UNEXPRECTED_BIN_FILES="$(find $SRC -type f ! -size 0 ! -name '*.jpg' ! -name '*.png' ! -name '*.ico' -exec grep -IL . '{}' \;)"
    if [ -n "$UNEXPRECTED_BIN_FILES" ]; then
        printf  "Found unexpected binary files: \n%s\n" "$UNEXPRECTED_BIN_FILES"
    else
        echo "no unexpected files"
    fi
    echo

    # check headers
    echo "** CHECK ASF HEADER **"
    HEADER="$(cat $SRC/backend/.golangci-goheader.template)"
    test -n "$HEADER"
    OIFS="$IFS"
    IFS='
'
    for FN in `find "$SRC" -name '*.go'`; do
        echo "$FN"
        if ! grep -qF "$HEADER" "$FN"; then
            echo $FN has no ASF header
            exit -1
        fi
    done
    IFS="$OIFS"
    for FN in $(find "$SRC" -name '*.js' -not -path './config-ui/node_modules/*'); do
        if ! cut -c4- $FN | grep -qF "$HEADER"; then
            echo $FN has no ASF header
            exit -1
        fi
    done
    echo "All *.go *.js contains ASF headers"


    echo "
+1 (binding)

I checked these items:
- Download links are valid.
- Checksums and signatures.
- LICENSE/NOTICE/$DISCLAIMER files exist
- No unexpected binary files
- All source files have ASF headers (**.go and **.js)
" | xsel -b
    echo "All checks passed, the +1 mail body is copied to clipboard"
}

check $1