#!/usr/bin/env bash

set -e

question_answered_with_yes() {
  local prompt="$1"
  local ans
  printf '%b\n  Enter y or n and press Enter,\n  abort with any other key ... [y/N]: ' "$prompt"
  read -r ans
  case "$ans" in
    y|Y) return 0 ;;
    n|N|"") return 1 ;;
    *) echo "Aborted."; exit 1 ;;
  esac
}

echo "Fetching latest from origin..."
git fetch origin
git checkout main
git pull origin main

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

echo "Finalising release of version: $CURRENT_VERSION"

RELEASE_BRANCH="release/$CURRENT_VERSION"

_local_exists=false
if git rev-parse "$RELEASE_BRANCH" >/dev/null 2>&1; then
    _local_exists=true
fi

_remote_exists=false
if git ls-remote --heads origin "$RELEASE_BRANCH" 2>/dev/null | grep -q .; then
    _remote_exists=true
fi

if [ "$_local_exists" = "true" ] || [ "$_remote_exists" = "true" ]; then
    if question_answered_with_yes "Delete release branch $RELEASE_BRANCH (local and remote)?"; then
        [ "$_local_exists" = "true" ] && git branch -D "$RELEASE_BRANCH"
        [ "$_remote_exists" = "true" ] && git push origin --delete "$RELEASE_BRANCH"
    fi
fi

if ! question_answered_with_yes "Create tag $CURRENT_VERSION on main?"; then
    echo "Tag creation aborted."
    exit 0
fi

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

if question_answered_with_yes "Push tag to origin?"; then
    git push origin "$CURRENT_VERSION"
    echo ""
    echo "Tag $CURRENT_VERSION pushed to origin."
    echo "Gitea will create a release from the tag."
else
    echo "Tag created locally. Push manually with:"
    echo "  git push origin $CURRENT_VERSION"
fi