#!/usr/bin/env bash
set -euo pipefail

VERSION_FILE="VERSION"

if [ ! -f "$VERSION_FILE" ]; then
    echo "Error: $VERSION_FILE not found" >&2
    exit 1
fi

current=$(cat "$VERSION_FILE")
echo "Current version: $current"

IFS='.' read -r major minor patch <<< "$current"

if [ "${1:-}" = "--increment" ]; then
    patch=$((patch + 1))
    new_version="${major}.${minor}.${patch}"
    echo "Auto-incrementing to: $new_version"
else
    echo "Increment version? [y/N]"
    read -r answer
    if [[ "$answer" =~ ^[Yy] ]]; then
        echo "  1) patch (${major}.${minor}.$((patch + 1)))"
        echo "  2) minor (${major}.$((minor + 1)).0)"
        echo "  3) major ($((major + 1)).0.0)"
        echo -n "Choice [1]: "
        read -r choice
        case "${choice:-1}" in
            1) patch=$((patch + 1)); new_version="${major}.${minor}.${patch}" ;;
            2) minor=$((minor + 1)); patch=0; new_version="${major}.${minor}.${patch}" ;;
            3) major=$((major + 1)); minor=0; patch=0; new_version="${major}.${minor}.${patch}" ;;
            *) echo "Invalid choice" >&2; exit 1 ;;
        esac
        echo "New version: $new_version"
    else
        new_version="$current"
        echo "Keeping version: $new_version"
    fi
fi

echo "$new_version" > "$VERSION_FILE"

echo "Building arrman v${new_version}..."
go build -ldflags "-X main.Version=${new_version}" -o arrman .

echo "Done: ./arrman v${new_version}"