#!/usr/bin/env bash
# Publish an Archipelago OTA release to a Gitea remote and verify downloads.

set -euo pipefail

VERSION="${1:-}"
REMOTE="${2:-gitea-vps2}"

if [ -z "$VERSION" ]; then
    echo "Usage: $0 VERSION [remote]"
    exit 1
fi

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
VERSION_DIR="$PROJECT_ROOT/releases/v${VERSION}"
BACKEND="$VERSION_DIR/archipelago"
FRONTEND="$VERSION_DIR/archipelago-frontend-${VERSION}.tar.gz"

fail() { echo "Error: $*" >&2; exit 1; }

[ -f "$PROJECT_ROOT/releases/manifest.json" ] || fail "releases/manifest.json missing"
[ -f "$BACKEND" ] || fail "backend artifact missing: $BACKEND"
[ -f "$FRONTEND" ] || fail "frontend artifact missing: $FRONTEND"

"$SCRIPT_DIR/check-release-manifest.sh"

# §A supply-chain gate: never publish an unsigned OTA manifest. Fleet nodes
# with the pinned release-root anchor refuse to auto-apply unsigned manifests,
# and enforcement will tighten to hard-reject — an unsigned publish would
# strand them. Grep proves presence; ceremony verify proves the crypto.
EXPECTED_DID="did:key:z6MkkidEnEpo6qHMCNSZoNKWtvQvxq3whnaME9wGgEFhq7ur"
grep -q '"signature":' "$PROJECT_ROOT/releases/manifest.json" \
    && grep -q "\"signed_by\": \"$EXPECTED_DID\"" "$PROJECT_ROOT/releases/manifest.json" \
    || fail "releases/manifest.json is not signed by the release root — run: bash scripts/sign-manifest.sh"
if [ -x "$PROJECT_ROOT/core/target/release/archipelago" ]; then
    "$PROJECT_ROOT/core/target/release/archipelago" ceremony verify "$PROJECT_ROOT/releases/manifest.json" \
        || fail "manifest signature failed cryptographic verification"
fi

remote_url=$(git -C "$PROJECT_ROOT" remote get-url "$REMOTE")
case "$remote_url" in
    http://*@*) ;;
    *) fail "$REMOTE must be an authenticated http:// Gitea remote URL for API uploads" ;;
esac

auth=${remote_url#http://}
auth=${auth%@*}
host_path=${remote_url#http://$auth@}
host=${host_path%%/*}
repo_path=${host_path#*/}
repo_path=${repo_path%.git}
api="http://$host/api/v1/repos/$repo_path"
release_url="$api/releases/tags/v${VERSION}"

echo "Pushing main and v${VERSION} to $REMOTE..."
git -C "$PROJECT_ROOT" push "$REMOTE" main "refs/tags/v${VERSION}"

release_json=$(curl -fsS -u "$auth" "$release_url" || true)
if [ -z "$release_json" ]; then
    echo "Creating Gitea release v${VERSION}..."
    release_body=$(python3 - "$VERSION" <<'PY'
import json
import sys

version = sys.argv[1]
print(json.dumps({
    "tag_name": f"v{version}",
    "target_commitish": "main",
    "name": f"v{version}",
    "body": f"Archipelago v{version} release artifacts for OTA updates.",
    "draft": False,
    "prerelease": True,
}))
PY
)
    release_json=$(curl -fsS -u "$auth" -H 'Content-Type: application/json' -d "$release_body" "$api/releases")
fi

release_id=$(printf '%s' "$release_json" | python3 -c 'import json,sys; print(json.load(sys.stdin)["id"])')

asset_names=$(curl -fsS -u "$auth" "$api/releases/$release_id/assets" | python3 -c 'import json,sys; print("\n".join(a["name"] for a in json.load(sys.stdin)))')
upload_asset() {
    local path="$1"
    local name="$2"
    if printf '%s\n' "$asset_names" | grep -Fxq "$name"; then
        echo "Asset $name already exists; leaving it in place."
        return
    fi
    echo "Uploading $name..."
    curl --fail --show-error --silent --http1.1 --connect-timeout 20 --max-time 900 \
        -u "$auth" \
        -F "attachment=@$path" \
        "$api/releases/$release_id/assets?name=$name" >/dev/null
    asset_names=$(printf '%s\n%s\n' "$asset_names" "$name")
}

upload_asset "$BACKEND" "archipelago"
upload_asset "$FRONTEND" "archipelago-frontend-${VERSION}.tar.gz"

echo "Verifying public download URLs from manifest..."
python3 - "$PROJECT_ROOT/releases/manifest.json" <<'PY' | while read -r url size; do
import json
import sys

manifest = json.load(open(sys.argv[1]))
for component in manifest["components"]:
    print(component["download_url"], component["size_bytes"])
PY
    headers=$(curl -fsSI -L --max-time 60 "$url") || fail "download URL failed: $url"
    actual_size=$(printf '%s\n' "$headers" | awk 'tolower($1)=="content-length:" { size=$2 } END { gsub("\r", "", size); print size }')
    [ "$actual_size" = "$size" ] || fail "download size mismatch for $url (expected $size, got ${actual_size:-missing})"
done

echo "Release v${VERSION} published and verified on $REMOTE."