#!/usr/bin/env bash
# Publish a release to the Gitea/Forgejo host, uploading the built artifacts.
#
# Requires:
#   - GITEA_TOKEN (token with write access) OR credentials usable for basic auth
#     (e.g. the same ones stored in ~/.git-credentials by `git push`)
#   - build artifacts from tools/build_releases.sh (+ optional installer/AppImage)
#
# Usage:
#   GITEA_TOKEN=xxx ./tools/publish_release.sh [version]
#   (version defaults to config/version from project.godot)
set -euo pipefail

REPO="${REPO:-zwitschi/security-game}"
HOST="${HOST:-https://git.allucanget.biz}"
VERSION="${1:-$(grep -oP 'config/version="\K[^"]+' project.godot)}"
TAG="v$VERSION"

# AUTH is a curl argument list. Populated by the first available method:
#   1. GITEA_TOKEN            explicit token (repo secret in CI)
#   2. GITEA_AUTH_HEADER      a ready-made "Authorization: ..." header
#   3. ~/.git-credentials     basic auth for HOST
#   4. the checkout's git extraheader (Gitea Actions runners inject one for the
#      job; this is what makes tag builds publish without any repo secret)
AUTH=()
if [[ -n "${GITEA_TOKEN:-}" ]]; then
  AUTH=(-H "Authorization: token $GITEA_TOKEN")
elif [[ -n "${GITEA_AUTH_HEADER:-}" ]]; then
  AUTH=(-H "$GITEA_AUTH_HEADER")
elif [[ -f "$HOME/.git-credentials" ]]; then
  CRED="$(python3 -c "
import os
for l in open(os.path.expanduser('~/.git-credentials')):
    if '$HOST'.split('//')[1] in l:
        print(l.split('://',1)[1].split('@')[0]); break")"
  if [[ -z "$CRED" ]]; then
    echo "error: no credentials for $HOST in ~/.git-credentials" >&2
    exit 1
  fi
  # curl basic auth. (Previously only CRED was set, so ${AUTH[@]} was unbound
  # under `set -u` and every API call failed silently.)
  AUTH=(-u "$CRED")
fi

if [[ ${#AUTH[@]} -eq 0 ]]; then
  # Gitea Actions: actions/checkout configures a local extraheader with the
  # runner's credentials. Reuse it for the API (the same server, so the header is
  # valid for $HOST too).
  GIT_HEADER="$(git config --local --get-regexp '^http\..*\.extraheader$' 2>/dev/null | head -n1 | cut -d' ' -f2- || true)"
  if [[ -n "${GIT_HEADER:-}" ]]; then
    AUTH=(-H "$GIT_HEADER")
  fi
fi

if [[ ${#AUTH[@]} -eq 0 ]]; then
  echo "error: no credentials. Set GITEA_TOKEN, GITEA_AUTH_HEADER, or provide ~/.git-credentials." >&2
  exit 1
fi

# Artifacts that must exist (run tools/build_releases.sh first).
portables=(
  "build/step-line-linux-$VERSION.x86_64"
  "build/step-line-windows-$VERSION.exe"
  "build/step-line-macos-$VERSION.zip"
)
extras=(
  "build/step-line-setup-$VERSION.exe"
  "build/step-line-$VERSION-x86_64.AppImage"
  "build/step-line-web-$VERSION.zip"
)
all_artifacts=("${portables[@]}")
for f in "${extras[@]}"; do
  if [[ -f "$f" ]]; then
    all_artifacts+=("$f")
  else
    echo "note: optional artifact missing (skipping): $f"
  fi
done

API="$HOST/api/v1/repos/$REPO/releases"
echo "==> Creating release $TAG on $HOST/$REPO"
RELEASE_ID="$(curl -s -X POST "$API" "${AUTH[@]}" \
  -H "Content-Type: application/json" \
  -d "{\"tag_name\":\"$TAG\",\"name\":\"$TAG\",\"body\":\"Step Line $VERSION — playable prototype. See README for controls.\",\"draft\":false,\"prerelease\":false}" \
  | python3 -c "import sys,json;print(json.load(sys.stdin).get('id',''))" 2>/dev/null || true)"

# If the release already exists (tag already pushed), reuse it.
if [[ -z "$RELEASE_ID" ]]; then
  RELEASE_ID="$(curl -s "${AUTH[@]}" "$API/tags/$TAG" | python3 -c "import sys,json;print(json.load(sys.stdin).get('id',''))" 2>/dev/null || true)"
fi
if [[ -z "$RELEASE_ID" ]]; then
  echo "error: could not create or find release $TAG" >&2
  exit 1
fi
echo "Release id: $RELEASE_ID"

for f in "${all_artifacts[@]}"; do
  if [[ ! -f "$f" ]]; then
    echo "error: missing artifact $f — run ./tools/build_releases.sh first" >&2
    exit 1
  fi
  echo "==> Uploading $(basename "$f")"
  # Fail loudly: a silent 4xx here used to leave a release with no artifacts while
  # the job still reported success.
  code="$(curl -sS -o /tmp/release-upload.json -w '%{http_code}' --retry 2 \
    -X POST "$API/$RELEASE_ID/assets" "${AUTH[@]}" -F "attachment=@$f" || true)"
  if [[ "$code" != "201" && "$code" != "200" ]]; then
    echo "error: upload of $(basename "$f") failed with HTTP $code" >&2
    cat /tmp/release-upload.json >&2 || true
    echo "" >&2
    exit 1
  fi
done

# Verify the release actually carries the artifacts we just sent.
have="$(curl -sS "${AUTH[@]}" "$API/$RELEASE_ID" | python3 -c "
import sys, json
try:
    d = json.load(sys.stdin)
except Exception:
    print(0); raise SystemExit
print(len(d.get('assets', [])))" 2>/dev/null || echo 0)"
if [[ "${have:-0}" -lt "${#all_artifacts[@]}" ]]; then
  echo "error: release has $have assets, expected ${#all_artifacts[@]}" >&2
  exit 1
fi
echo "Verified $have artifacts on the release"

echo ""
echo "Release live: $HOST/$REPO/releases/tag/$TAG"