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

# ── Read version from build.gradle.kts ──────────────────────────────────────
VERSION=$(grep -oP 'val appVersion\s*=\s*"\K[^"]+' composeApp/build.gradle.kts)
TAG="v${VERSION}"
echo "==> Version: ${VERSION} (tag: ${TAG})"

# ── Require FORGEJO_TOKEN ────────────────────────────────────────────────────
if [[ -z "${FORGEJO_TOKEN:-}" ]]; then
  echo "ERROR: FORGEJO_TOKEN env var is not set." >&2
  exit 1
fi

# ── Detect OS and set build task / artifact glob ─────────────────────────────
OS="$(uname -s)"
case "${OS}" in
  Darwin)
    TASK=":composeApp:packageDmg"
    GLOB="composeApp/build/compose/binaries/main/dmg/*.dmg"
    ;;
  MINGW*|MSYS*|CYGWIN*|Windows_NT)
    TASK=":composeApp:packageMsi"
    GLOB="composeApp/build/compose/binaries/main/msi/*.msi"
    ;;
  *)
    echo "ERROR: Unsupported OS '${OS}'." >&2
    exit 1
    ;;
esac
echo "==> OS detected: ${OS} — task: ${TASK}"

# ── Build ────────────────────────────────────────────────────────────────────
echo "==> Building..."
./gradlew ${TASK}

# ── Locate artifact ──────────────────────────────────────────────────────────
ARTIFACT=$(ls ${GLOB} 2>/dev/null | head -1)
if [[ -z "${ARTIFACT}" ]]; then
  echo "ERROR: No artifact found matching ${GLOB}" >&2
  exit 1
fi
echo "==> Artifact: ${ARTIFACT}"

# ── Forgejo API setup ────────────────────────────────────────────────────────
API_BASE="https://git.asarius.site/api/v1"
REPO="rukira/wow-backup"

# ── Check for existing release ───────────────────────────────────────────────
echo "==> Checking for existing release ${TAG}..."
HTTP_CODE=$(curl -s -o /tmp/release_response.json -w "%{http_code}" \
  -H "Authorization: token ${FORGEJO_TOKEN}" \
  "${API_BASE}/repos/${REPO}/releases/tags/${TAG}")

if [[ "${HTTP_CODE}" == "200" ]]; then
  RELEASE_ID=$(python3 -c "import json; print(json.load(open('/tmp/release_response.json'))['id'])")
  echo "==> Found existing release (id: ${RELEASE_ID})"
else
  echo "==> Creating release ${TAG}..."
  HTTP_CODE=$(curl -s -o /tmp/release_create.json -w "%{http_code}" \
    -X POST \
    -H "Authorization: token ${FORGEJO_TOKEN}" \
    -H "Content-Type: application/json" \
    -d "{\"tag_name\": \"${TAG}\", \"name\": \"${TAG}\", \"body\": \"Release ${TAG}\"}" \
    "${API_BASE}/repos/${REPO}/releases")

  if [[ "${HTTP_CODE}" != "201" ]]; then
    echo "ERROR: Failed to create release (HTTP ${HTTP_CODE}):" >&2
    cat /tmp/release_create.json >&2
    exit 1
  fi

  RELEASE_ID=$(python3 -c "import json; print(json.load(open('/tmp/release_create.json'))['id'])")
  echo "==> Created release (id: ${RELEASE_ID})"
fi

# ── Upload artifact ──────────────────────────────────────────────────────────
FILENAME=$(basename "${ARTIFACT}")
echo "==> Uploading ${FILENAME}..."
HTTP_CODE=$(curl -s -o /tmp/upload_response.json -w "%{http_code}" \
  -X POST \
  -H "Authorization: token ${FORGEJO_TOKEN}" \
  -F "attachment=@${ARTIFACT}" \
  "${API_BASE}/repos/${REPO}/releases/${RELEASE_ID}/assets?name=${FILENAME}")

if [[ "${HTTP_CODE}" != "201" ]]; then
  echo "ERROR: Failed to upload artifact (HTTP ${HTTP_CODE}):" >&2
  cat /tmp/upload_response.json >&2
  exit 1
fi

echo "==> Done! ${FILENAME} uploaded to release ${TAG}."