#!/usr/bin/env bash

set -euo pipefail

usage() {
    cat <<'EOU'
Usage: ./release.sh [--dry-run] [--allow-dirty] <semver>

Examples:
  ./release.sh 0.2.0
  ./release.sh --dry-run 0.2.0

This script rebuilds the toolbox image, tags it as:
  - tsysdevstack-toolboxstack-<name>:dev
  - tsysdevstack-toolboxstack-<name>:release-current
  - tsysdevstack-toolboxstack-<name>:v<semver>

When run without --dry-run it pushes all three tags.
EOU
}

DRY_RUN=false
ALLOW_DIRTY=false
VERSION=""

while (( $# > 0 )); do
    case "$1" in
        --dry-run)
            DRY_RUN=true
            shift
            ;;
        --allow-dirty)
            ALLOW_DIRTY=true
            shift
            ;;
        -h|--help)
            usage
            exit 0
            ;;
        -*)
            echo "Unknown option: $1" >&2
            usage
            exit 1
            ;;
        *)
            VERSION="$1"
            shift
            ;;
    esac
done

if [[ -z "${VERSION}" ]]; then
    echo "Error: semantic version is required." >&2
    usage
    exit 1
fi

if [[ "${VERSION}" =~ ^v?([0-9]+)\.([0-9]+)\.([0-9]+)$ ]]; then
    SEMVER="v${BASH_REMATCH[1]}.${BASH_REMATCH[2]}.${BASH_REMATCH[3]}"
else
    echo "Error: version must be semantic (e.g., 0.2.0 or v0.2.0)." >&2
    exit 1
fi

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPO_ROOT="$(cd "${SCRIPT_DIR}" && git rev-parse --show-toplevel 2>/dev/null || true)"

if [[ -n "${REPO_ROOT}" && "${ALLOW_DIRTY}" != "true" ]]; then
    if ! git -C "${REPO_ROOT}" diff --quiet --ignore-submodules --exit-code; then
        echo "Error: git working tree has uncommitted changes. Please commit or stash before releasing." >&2
        exit 1
    fi
elif [[ -z "${REPO_ROOT}" ]]; then
    echo "Warning: unable to resolve git repository root; skipping clean tree check." >&2
fi

# Get the toolbox name from the directory name (or you can pass it as an argument)
TOOLBOX_NAME="${TOOLBOX_NAME_OVERRIDE:-$(basename "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)")}"
IMAGE_NAME="tsysdevstack-toolboxstack-${TOOLBOX_NAME#toolbox-}"
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

USER_ID="${USER_ID_OVERRIDE:-$(id -u)}"
GROUP_ID="${GROUP_ID_OVERRIDE:-$(id -g)}"
USERNAME="${USERNAME_OVERRIDE:-toolbox}"
TEA_VERSION="${TEA_VERSION_OVERRIDE:-0.11.1}"
BUILDER_NAME="${BUILDER_NAME:-tsysdevstack-toolboxstack-builder}"
CACHE_DIR="${SCRIPT_DIR}/.build-cache"
TAG="${TAG_OVERRIDE:-dev}"
RELEASE_TAG="${RELEASE_TAG_OVERRIDE:-release-current}"
VERSION_TAG="${VERSION_TAG_OVERRIDE:-}"
if [[ -n "$VERSION_TAG" ]]; then
    VERSION_TAG="$SEMVER"
fi
PUSH="${PUSH_OVERRIDE:-false}"

echo "Preparing release for ${SEMVER}"
echo "  dry-run: ${DRY_RUN}"
echo "  allow-dirty: ${ALLOW_DIRTY}"

if [[ "${DRY_RUN}" == "true" ]]; then
    echo "[dry-run] Would build ${IMAGE_NAME}:${TAG}"
    TAG_OVERRIDE="${TAG}" PUSH_OVERRIDE=false "${SCRIPT_DIR}/build.sh"
    echo "[dry-run] Skipped pushing tags."
else
    echo "Building ${IMAGE_NAME}:${TAG}"
    TAG_OVERRIDE="${TAG}" PUSH_OVERRIDE=true RELEASE_TAG_OVERRIDE="${RELEASE_TAG}" VERSION_TAG_OVERRIDE="${SEMVER}" "${SCRIPT_DIR}/build.sh"
    echo "Release ${SEMVER} pushed as:"
    echo "  - ${IMAGE_NAME}:dev"
    echo "  - ${IMAGE_NAME}:release-current"
    echo "  - ${IMAGE_NAME}:${SEMVER}"
fi