#!/usr/bin/env bash
set -e

RAW_VERSION=""

if [ -n "${VERSION_FILE-}" ] && [ -f "${VERSION_FILE-}" ]; then
  if echo "${VERSION_FILE}" | grep -q -E '\.[Yy][Aa][Mm][Ll]$'; then
    RAW_VERSION=$(yq '.version' "${VERSION_FILE}" 2>/dev/null | grep -v '^null$' || true)
    if [ -z "${RAW_VERSION}" ]; then
      RAW_VERSION=$(sed 's/'$'\xef\xbb\xbf''//g' "${VERSION_FILE}" | sed -n 's/^version:[[:space:]]*\([^[:space:]]*\).*/\1/p')
    fi
  elif echo "${VERSION_FILE}" | grep -q -E '\.json$'; then
    RAW_VERSION=$(jq -r '.version' "${VERSION_FILE}")
  else
    RAW_VERSION=$(cat "${VERSION_FILE}" | tr -d '[:space:]')
  fi
fi

if [ -z "${RAW_VERSION}" ]; then
  if [ -f VERSION ]; then
    RAW_VERSION=$(cat VERSION | tr -d '[:space:]')
  elif [ -f package.json ]; then
    RAW_VERSION=$(jq -r '.version' package.json)
  elif [ -f pom.xml ]; then
    RAW_VERSION=$(grep -oP '<version>\K[^<]+' pom.xml | head -1)
  elif [ -f Chart.yaml ]; then
    RAW_VERSION=$(yq '.version' Chart.yaml 2>/dev/null | grep -v '^null$' || true)
    if [ -z "${RAW_VERSION}" ]; then
      RAW_VERSION=$(sed 's/'$'\xef\xbb\xbf''//g' Chart.yaml | sed -n 's/^version:[[:space:]]*\([^[:space:]]*\).*/\1/p')
    fi
  else
    echo "ERROR: No version source found (VERSION_FILE, VERSION, package.json, pom.xml, Chart.yaml)" >&2
    exit 1
  fi
fi

BASE_VERSION=$(echo "$RAW_VERSION" | cut -d'.' -f1-2)
echo "gitea-ci-library - Tunnistettu Major.Minor versio: $BASE_VERSION"

TAGS_JSON=$(curl -s -f -H "Authorization: token ${GITEA_TOKEN}" \
  "${SERVER_URL}/api/v1/repos/${REPO}/tags")

TAG=$(echo "$TAGS_JSON" | jq -r --arg prefix "${GIT_TAG_PREFIX-}" --arg sha "${SHA}" '
  if type == "array" then
    .[] | select(.commit.sha == $sha and (.name | startswith($prefix))) | .name
  else empty end' | head -1)

mkdir -p /tmp/build-ctx

if [ -n "$TAG" ]; then
  echo "ARTIFACT_EXISTS=true" > /tmp/build-ctx/build.env
  echo "NEXT_VERSION=$TAG" >> /tmp/build-ctx/build.env
  echo "gitea-ci-library - Artefakti löytyi jo tagilla: $TAG."
else
  echo "ARTIFACT_EXISTS=false" > /tmp/build-ctx/build.env

  HIGHEST_PATCH=$(echo "$TAGS_JSON" | jq -r --arg prefix "${GIT_TAG_PREFIX-}" --arg bv "${GIT_TAG_PREFIX-}${BASE_VERSION}." '
    if type == "array" then .[] | .name | select(startswith($bv)) | sub($bv; "") | tonumber else empty end' | sort -rn | head -1)

  if [ -z "$HIGHEST_PATCH" ]; then NEXT_PATCH=0; else NEXT_PATCH=$((HIGHEST_PATCH + 1)); fi
  FULL_VERSION="${BASE_VERSION}.${NEXT_PATCH}"

  echo "NEXT_VERSION=$FULL_VERSION" >> /tmp/build-ctx/build.env
  echo "gitea-ci-library - Uusi vapaa versio: $FULL_VERSION"
fi