From a550bbd01af836dd5892d9d013a8b1b568a9328d Mon Sep 17 00:00:00 2001
From: Terranom674 <thomas_dannenberg@web.de>
Date: Tue, 18 Aug 2026 21:25:44 +0200
Subject: [PATCH] Add isolated WebDAV shadow tree runner

---
 runtime/sync-webdav.sh | 101 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 runtime/sync-webdav.sh

diff --git a/runtime/sync-webdav.sh b/runtime/sync-webdav.sh
new file mode 100644
index 0000000..78d935b
--- /dev/null
+++ b/runtime/sync-webdav.sh
@@ -0,0 +1,101 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+CONFIG_FILE="${PIWIGO_CONFIG:-}"
+[[ -n "$CONFIG_FILE" && -r "$CONFIG_FILE" ]] || { echo "WebDAV-Konfiguration fehlt: ${CONFIG_FILE:-<leer>}" >&2; exit 1; }
+
+# shellcheck source=/dev/null
+source "$CONFIG_FILE"
+
+: "${PIWIGO_ROOT:?PIWIGO_ROOT fehlt}"
+: "${CONNECTION_ID:?CONNECTION_ID fehlt}"
+: "${WEBDAV_BASE_URL:?WEBDAV_BASE_URL fehlt}"
+: "${WEBDAV_USER:?WEBDAV_USER fehlt}"
+: "${WEBDAV_PASSWORD_FILE:?WEBDAV_PASSWORD_FILE fehlt}"
+: "${WEBDAV_ROOTS_FILE:?WEBDAV_ROOTS_FILE fehlt}"
+: "${WEBDAV_SOURCE_DIR:?WEBDAV_SOURCE_DIR fehlt}"
+: "${WEBDAV_MAPPING_FILE:?WEBDAV_MAPPING_FILE fehlt}"
+: "${MANIFEST:?MANIFEST fehlt}"
+: "${SHADOW_MAP_FILE:?SHADOW_MAP_FILE fehlt}"
+: "${GALLERY_ROOT:?GALLERY_ROOT fehlt}"
+: "${STATE_DIR:?STATE_DIR fehlt}"
+: "${STATUS_FILE:?STATUS_FILE fehlt}"
+
+[[ "${SOURCE_MODE:-}" == "webdav-placeholder" ]] || { echo "Falscher SOURCE_MODE: ${SOURCE_MODE:-<leer>}" >&2; exit 1; }
+[[ -r "$WEBDAV_PASSWORD_FILE" ]] || { echo "Nextcloud-Passwortdatei fehlt." >&2; exit 1; }
+[[ -r "$WEBDAV_ROOTS_FILE" ]] || { echo "WebDAV-Wurzeln fehlen." >&2; exit 1; }
+
+SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
+LOCK_FILE="$STATE_DIR/webdav-sync.lock"
+mkdir -p -- "$STATE_DIR"
+exec 9>"$LOCK_FILE"
+flock -n 9 || exit 0
+
+write_status() {
+    local state="$1" message="$2" detail="${3:-}"
+    python3 - "$STATUS_FILE" "$PIWIGO_ROOT" "$CONNECTION_ID" "$state" "$message" "$detail" <<'PY'
+import json, os, sys, tempfile, time
+status_file, piwigo_root, connection_id, state, message, detail = sys.argv[1:]
+payload = {
+    "state": state,
+    "message": message,
+    "timestamp": int(time.time()),
+    "auth_mode": "webdav",
+    "api": {"state": "not_run", "message": ""},
+    "fallback": {"state": "not_run", "message": ""},
+    "error_detail": detail if state == "error" else "",
+}
+public_file = os.path.join(piwigo_root.rstrip('/'), '_data', 'bratonien-tools', 'nc-connector-status', f'connection-{connection_id}.json')
+for target in (status_file, public_file):
+    directory = os.path.dirname(target)
+    os.makedirs(directory, exist_ok=True)
+    fd, temporary = tempfile.mkstemp(dir=directory)
+    with os.fdopen(fd, 'w', encoding='utf-8') as handle:
+        json.dump(payload, handle, ensure_ascii=False)
+        handle.write('\n')
+    os.chmod(temporary, 0o644)
+    os.replace(temporary, target)
+PY
+}
+
+failure() {
+    local code="$1" command="$2" line="$3"
+    trap - ERR
+    write_status error "WebDAV-Shadow-Tree fehlgeschlagen" "Exit-Code: $code; Zeile: $line; Befehl: $command"
+    exit "$code"
+}
+trap 'failure $? "$BASH_COMMAND" "$LINENO"' ERR
+
+ROOT_ARGS=()
+while IFS=$'\t' read -r path display_name; do
+    [[ -z "$path" || "$path" == \#* ]] && continue
+    ROOT_ARGS+=(--root "$path")
+done < "$WEBDAV_ROOTS_FILE"
+
+[[ ${#ROOT_ARGS[@]} -gt 0 ]] || { write_status error "Keine WebDAV-Wurzeln konfiguriert"; exit 1; }
+
+python3 "$SCRIPT_DIR/lib/build_webdav_placeholder_source.py" \
+    --base-url "$WEBDAV_BASE_URL" \
+    --user "$WEBDAV_USER" \
+    --password-file "$WEBDAV_PASSWORD_FILE" \
+    "${ROOT_ARGS[@]}" \
+    --source-dir "$WEBDAV_SOURCE_DIR" \
+    --manifest "$MANIFEST" \
+    --mapping "$WEBDAV_MAPPING_FILE"
+
+python3 "$SCRIPT_DIR/lib/shadow_tree.py" \
+    --manifest "$MANIFEST" \
+    --destination "$GALLERY_ROOT" \
+    --state "$SHADOW_MAP_FILE"
+
+if [[ "${PIWIGO_SYNC_ENABLED:-0}" == "1" ]]; then
+    php "$SCRIPT_DIR/lib/piwigo-sync.php" \
+        --piwigo-root="$PIWIGO_ROOT" \
+        --connection-id="$CONNECTION_ID" \
+        --base-url="http://127.0.0.1"
+    write_status ok "WebDAV-Shadow-Tree und Piwigo-Synchronisierung erfolgreich"
+else
+    write_status ok "WebDAV-Shadow-Tree erfolgreich; Piwigo-Synchronisierung bleibt bewusst deaktiviert"
+fi
+
+trap - ERR