#!/bin/bash

set -e

mydir="$(dirname "$(realpath "$0")")"

source "$mydir/merge_helpers.sh"

require_clean_git


pushd "$mydir" > /dev/null

last_tag=`downstream_latest_tag`

build_gradle="vector/build.gradle"

get_prop() {
    local prop="$1"
    cat "$build_gradle" | grep "$prop = " | sed "s|$prop = ||"
}
set_prop() {
    local prop="$1"
    local value="$2"
    if grep -q "$prop =" "$build_gradle"; then
        local equals="= "
        local not_equals=""
    else
        local equals=""
        # Don't touch lines that have an equals in it, but not for this prop
        local not_equals="/=/! "
    fi
    sed -i "$not_equals""s|\($prop $equals\).*|\1$value|g" "$build_gradle"
}

calculate_version_code() {
    echo "(($versionMajor * 10000 + $versionMinor * 100 + $versionPatch + $scVersion) + 4000000) * 10" | bc
}


#
# Increase version
#

versionMajor=`get_prop ext.versionMajor`
versionMinor=`get_prop ext.versionMinor`
versionPatch=`get_prop ext.versionPatch`
scVersion=`get_prop ext.scVersion`

previousVersionCode=`grep '^        versionCode ' "$build_gradle" | sed 's|^        versionCode ||'`
versionCode=`calculate_version_code`
if [ "$versionCode" = "$previousVersionCode" ]; then
    ((scVersion++))
    echo "Increase downstream version to $scVersion"
    versionCode=`calculate_version_code`
else
    echo "Upstream version upgrade, no need to change downstream version"
fi

version="$versionMajor.$versionMinor.$versionPatch.sc.$scVersion"
new_tag="sc_v$version"

set_prop "ext.scVersion" "$scVersion"
set_prop "versionCode" "$versionCode"
set_prop "versionName" "\"$version\""



#
# Generate changelog
#

changelog_dir=fastlane/metadata/android/en-US/changelogs
changelog_file="$changelog_dir/$versionCode.txt"
mkdir -p "$changelog_dir"
git log --reverse --pretty=format:"- %s" "$last_tag".. --committer="$(git config user.name)" > "$changelog_file"
$EDITOR "$changelog_file" || true
read -p "Press enter when changelog is done"

git add -A
git commit -m "Increment version"
git tag "$new_tag"

popd > /dev/null