#!/usr/bin/env bash

set -e

if [ -n "$(git status --porcelain)" ]; then
    echo "Error: You have uncommitted local changes."
    echo "Please commit or stash them before releasing."
    echo ""
    echo "Uncommitted files:"
    git status --short
    exit 1
fi

VERSION_FILE="VERSION"
SCRIPT_FILE="post_installation_script/Nachinstallationsarbeiten_LC_Esslingen_XFCE.sh"

if [ ! -f "$VERSION_FILE" ]; then
    echo "Error: $VERSION_FILE not found"
    exit 1
fi

CURRENT_VERSION=$(cat "$VERSION_FILE" | tr -d '\n')

if [ ! -f "$SCRIPT_FILE" ]; then
    echo "Error: $SCRIPT_FILE not found"
    exit 1
fi

CURRENT_MAJOR=${CURRENT_VERSION#v}

if ! [[ "$CURRENT_VERSION" =~ ^v[0-9]+$ ]]; then
    echo "Error: Invalid version format in $VERSION_FILE. Expected v0, v1, v2, etc."
    exit 1
fi

NEXT_VERSION=$((CURRENT_MAJOR + 1))
NEXT_VERSION_STR="v$NEXT_VERSION"

if git rev-parse "refs/tags/$NEXT_VERSION_STR" >/dev/null 2>&1; then
    echo "Error: Tag $NEXT_VERSION_STR already exists locally."
    exit 1
fi

if git remote get-url origin >/dev/null 2>&1; then
    if git ls-remote --tags origin "$NEXT_VERSION_STR" 2>/dev/null | grep -q "$NEXT_VERSION_STR"; then
        echo "Error: Tag $NEXT_VERSION_STR already exists on remote."
        exit 1
    fi
else
    echo "Warning: No remote configured. You can still create the release locally."
fi

echo "Current version: $CURRENT_VERSION"
echo "Proposed version: $NEXT_VERSION_STR"
echo ""

read -p "Confirm release version $NEXT_VERSION_STR? [y/N]: " confirm

if [[ "$confirm" != "y" && "$confirm" != "Y" ]]; then
    echo "Release aborted."
    exit 0
fi

echo "$NEXT_VERSION_STR" > "$VERSION_FILE"

sed -i.bak "s/^SCRIPT_VERSION=.*/SCRIPT_VERSION=\"$NEXT_VERSION_STR\"/" "$SCRIPT_FILE"
if [ -f "${SCRIPT_FILE}.bak" ]; then
    rm "${SCRIPT_FILE}.bak"
fi

git add "$VERSION_FILE" "$SCRIPT_FILE"
git commit -m "Release $NEXT_VERSION_STR"

git tag -a "$NEXT_VERSION_STR" -m "Release $NEXT_VERSION_STR"

echo ""
echo "Tag $NEXT_VERSION_STR created locally."
read -p "Push to origin (includes tags)? [y/N]: " push_confirm

if [[ "$push_confirm" == "y" || "$push_confirm" == "Y" ]]; then
    git push origin --tags
    echo "Done! Gitea will create release from tag $NEXT_VERSION_STR"
else
    echo "Release prepared locally. Push manually with: git push origin --tags"
fi