#!/bin/sh

#HW_HG=

if [ -z "$1" ]; then

    echo 'You have to supply at least one hedgewars git revision as parameter!' >&2

    exit

fi

if [ -z "$HW_HG" ]; then 

    HW_HG="$PWD"

fi

if [ ! -d "$HW_HG/.hg" ]; then

    echo 'You have to set HW_HG (inside script or env) to a repo clone OR call this script from inside the repository!' >&2

    exit

fi

while [ ! -z "$1" ]; do

    echo

    echo

    echo '---------------------------------------------------------------'

    echo "$1"

    echo '---------------------------------------------------------------'

    url="https://github.com/hedgewars/hw/commit/$1"

    echo "Checking $url ..."

    echo

    page=$(wget -q -O- "$url")

    author=$(echo "$page" | sed -rn '1,/"user-mention"/{s/^.*"user-mention"( *[^>]*)?> *([^ <]*).*$/\2/ p}')

    if [ -z "$author" ]; then

        echo 'Couldn'\''t find author! Skipping '"$1"' ...' >&2

        shift

        continue

    fi

    echo 'Found author: '"$author"

    date=$(echo "$page" | sed -rn 's/^.*<time datetime="([^T]+)T([^Z]+).*/\1 \2 +0000/ p')

    if [ -z "$date" ]; then

        echo 'Couldn'\''t find date! Skipping '"$1"' ...' >&2

        shift

        continue

    fi

    echo 'Found date:   '"$date"

    echo

    echo 'Checking mercurial log for matches ...'

    echo

    result=$(hg log -R "$HW_HG" -u "$author" -d "$date" -v -l1)

    if [ -z "$result" ]; then

        echo 'No match with this author'\''s name. It might differ, so let'\''s try using date only ...'

        echo

        result=$(hg log -R "$HW_HG" -d "$date" -v)

    fi

    if [ -z "$result" ]; then

        echo 'No match :('

        shift

        continue

    fi

    rev=$(echo "$result" | sed 's/^.*://;q')

    echo 'Found match: r'"$rev"

    echo 'Link:        http://hg.hedgewars.org/hedgewars/rev/'"$rev"

    echo

    echo "$result"

    # proceed to next parameter

    shift

done

echo