#!/bin/bash
set -e

builddir="nightly-build"

DESTDIR="$(pwd)/$builddir"
BASEDIR="$(cd "$(dirname "$0")/.." && pwd)"
APPNAME="$(basename "$BASEDIR")"
title="$APPNAME nightly build"
repo="neurocyte/$APPNAME-nightly"

release_notes="$BASEDIR/$builddir-release-notes"

cd "$BASEDIR"

if [ -e "$DESTDIR" ]; then
    echo directory \"$builddir\" already exists
    exit 1
fi

if [ -e "$release_notes" ]; then
    echo file \""$release_notes"\" already exists
    exit 1
fi

DIFF="$(git diff --stat --patch HEAD)"

if [ -n "$DIFF" ]; then
    echo there are outstanding changes:
    echo "$DIFF"
    exit 1
fi

UNPUSHED="$(git log --pretty=oneline '@{u}...')"

if [ -n "$UNPUSHED" ]; then
    echo there are unpushed commits:
    echo "$UNPUSHED"
    exit 1
fi

# get latest version tag from github releases api
last_nightly_version=$(curl -s "https://api.github.com/repos/$repo/releases/latest" | grep '"tag_name":' | cut -d'"' -f4)
[ -z "$last_nightly_version" ] && {
    echo "failed to fetch $title latest version"
    exit 1
}

local_version="$(git --git-dir "$BASEDIR/.git" describe)"
if [ "$local_version" == "$last_nightly_version" ]; then
    echo "$title is already at version $last_nightly_version"
    exit 1
fi

echo
echo "building $title version $local_version... (previous $last_nightly_version)"
echo
git log "${last_nightly_version}..HEAD" --pretty="format:neurocyte/$APPNAME@%h %s"
echo
echo running tests...

./zig build test

echo building...

./zig build -Dpackage_release --prefix "$DESTDIR/build"

cd "$DESTDIR/build"

VERSION=$(/bin/cat version)
TARGETS=$(/bin/ls)

for target in $TARGETS; do
    if [ -d "$target" ]; then
        cd "$target"
        if [ "${target:0:8}" == "windows-" ]; then
            echo packing zip "$target"...
            zip -r "../../${APPNAME}-${VERSION}-${target}.zip" ./*
            cd ..
        else
            echo packing tar "$target"...
            tar -czf "../../${APPNAME}-${VERSION}-${target}.tar.gz" -- *
            cd ..
        fi
    fi
done

cd ..
rm -r build

TARFILES=$(/bin/ls)

for tarfile in $TARFILES; do
    echo signing "$tarfile"...
    gpg --local-user 4E6CF7234FFC4E14531074F98EB1E1BB660E3FB9 --detach-sig "$tarfile"
    sha256sum -b "$tarfile" >"${tarfile}.sha256"
done

echo "done making $title $VERSION @ $DESTDIR"
echo

/bin/ls -lah

cd ..

{
    echo "$title" "$VERSION"
    echo
    echo "commits:"
    echo
} >"$release_notes"
git log "${last_nightly_version}..HEAD" --pretty="format:neurocyte/$APPNAME@%h %s" >>"$release_notes"
cat "$release_notes"

gh release create "$VERSION" --repo "$repo" --notes-file "$release_notes" $DESTDIR/*