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

# Load .env if present
if [ -f "$(dirname "$0")/../.env" ]; then
  set -a
  # shellcheck disable=SC1091
  . "$(dirname "$0")/../.env"
  set +a
fi

API_URL=${GITEA_API_URL:-"https://gitea.elpatron.me/api/v1"}
OWNER=${GITEA_OWNER:-"elpatron"}
REPO=${GITEA_REPO:-"octo-funnel"}
TOKEN=${GITEA_API_TOKEN:-""}

TAG=""
NAME=""
ASSET_PATH=""
BODY_FILE=""

usage() {
  echo "Usage: $0 -t <tag> -a <asset-zip> [-n <name>] [-b <body-file>]" >&2
}

while getopts ":t:a:n:b:" opt; do
  case $opt in
    t) TAG="$OPTARG" ;;
    a) ASSET_PATH="$OPTARG" ;;
    n) NAME="$OPTARG" ;;
    b) BODY_FILE="$OPTARG" ;;
    *) usage; exit 2 ;;
  esac
done

if [ -z "$TAG" ] || [ -z "$ASSET_PATH" ]; then
  usage; exit 2
fi
if [ -z "$NAME" ]; then NAME="$TAG"; fi
if [ ! -f "$ASSET_PATH" ]; then
  echo "Asset not found: $ASSET_PATH" >&2; exit 1
fi
if [ -z "$TOKEN" ]; then
  echo "GITEA_API_TOKEN not set (in .env)." >&2; exit 1
fi

BODY="Tailscale Funnel Plugin ${TAG}\n\nAutomated release."
if [ -n "$BODY_FILE" ] && [ -f "$BODY_FILE" ]; then
  BODY=$(cat "$BODY_FILE")
fi

# Build JSON payload via python (robust quoting)
create_payload=$(REL_TAG="$TAG" REL_NAME="$NAME" REL_BODY_TXT="$BODY" python3 - <<'PY'
import json, os
payload = {
  "tag_name": os.environ["REL_TAG"],
  "name": os.environ["REL_NAME"],
  "body": os.environ["REL_BODY_TXT"],
  "draft": False,
  "prerelease": False
}
print(json.dumps(payload))
PY
)

create_resp=$(curl -sS -X POST \
  -H 'Content-Type: application/json' \
  -H "Authorization: token ${TOKEN}" \
  -d "$create_payload" \
  "${API_URL}/repos/${OWNER}/${REPO}/releases" || true)

# Extract id; if missing, fetch by tag
rel_id=$(python3 - <<'PY'
import sys, json
data=sys.stdin.read().strip()
if not data:
  print("")
else:
  try:
    obj=json.loads(data)
    print(obj.get('id',''))
  except Exception:
    print("")
PY
<<<"$create_resp")

if [ -z "$rel_id" ]; then
  get_resp=$(curl -sS -H "Authorization: token ${TOKEN}" "${API_URL}/repos/${OWNER}/${REPO}/releases/tags/${TAG}")
  rel_id=$(python3 - <<'PY'
import sys, json
obj=json.loads(sys.stdin.read())
print(obj.get('id',''))
PY
<<<"$get_resp")
fi

if [ -z "$rel_id" ]; then
  echo "Failed to get create/fetch release id" >&2
  echo "$create_resp" | head -c 400 >&2
  exit 1
fi

# Delete existing asset with same name (if any)
assets_json=$(curl -sS -H "Authorization: token ${TOKEN}" "${API_URL}/repos/${OWNER}/${REPO}/releases/${rel_id}/assets")
asset_id=$(python3 - <<'PY'
import sys, json, os
name=os.environ['ASSET_NAME']
try:
  arr=json.loads(sys.stdin.read())
  for a in arr:
    if a.get('name')==name:
      print(a.get('id',''))
      break
except Exception:
  pass
PY
ASSET_NAME="$(basename "$ASSET_PATH")" <<<"$assets_json")

if [ -n "$asset_id" ]; then
  curl -sS -X DELETE -H "Authorization: token ${TOKEN}" "${API_URL}/repos/${OWNER}/${REPO}/releases/${rel_id}/assets/${asset_id}" >/dev/null || true
fi

# Upload asset
upload_resp=$(curl -sS -H "Authorization: token ${TOKEN}" -F attachment=@"${ASSET_PATH}" "${API_URL}/repos/${OWNER}/${REPO}/releases/${rel_id}/assets?name=$(basename "$ASSET_PATH")")

html_url=$(python3 - <<'PY'
import sys, json
try:
  print(json.loads(sys.stdin.read()).get('browser_download_url',''))
except Exception:
  print("")
PY
<<<"$upload_resp")

echo "Release ${TAG} created (id=${rel_id}). Asset uploaded: ${html_url}"