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

# Integration script for node-red-contrib-nextcloud-zammad
# Patches zammad nodes into existing nextcloud-node-red Docker image

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PACKAGE_NAME="node-red-contrib-nextcloud-zammad"

# Auto-detect Node-RED directory
if [[ -z "${NODERED_DIR:-}" ]]; then
    for dir in \
        "/opt/nextcloud-node-red" \
        "/home/ncdeploy/nextcloud-node-red" \
        "/root/nextcloud-node-red" \
        "$(dirname "$SCRIPT_DIR")/nextcloud-node-red" \
        "$(docker inspect -f '{{.Config.Labels}}' nextcloud-node-red 2>/dev/null | grep -o 'com.docker.compose.project.working_dir=[^ ]*' | cut -d= -f2)"; do
        if [[ -n "$dir" && -d "$dir" && -f "$dir/Dockerfile" ]]; then
            NODERED_DIR="$dir"
            break
        fi
    done
fi

if [[ -z "${NODERED_DIR:-}" ]] || [[ ! -d "$NODERED_DIR" ]]; then
    echo "ERROR: Could not auto-detect nextcloud-node-red directory."
    echo "Set NODERED_DIR environment variable."
    exit 1
fi

if [[ ! -f "$NODERED_DIR/Dockerfile" ]]; then
    echo "ERROR: No Dockerfile found in $NODERED_DIR"
    exit 1
fi

echo "=== Nextcloud Zammad Node-RED Integration ==="
echo "Source: $SCRIPT_DIR"
echo "Target: $NODERED_DIR"

# 1. Copy nodes to nextcloud-node-red nodes subdirectory
NODES_TARGET="$NODERED_DIR/nodes/$PACKAGE_NAME"
echo "[integrate] Copying zammad nodes to $NODES_TARGET..."
mkdir -p "$NODES_TARGET"
cp "$SCRIPT_DIR/nodes"/*.js "$NODES_TARGET/"
cp "$SCRIPT_DIR/nodes"/*.html "$NODES_TARGET/"
cp "$SCRIPT_DIR/nodes/package.json" "$NODES_TARGET/"
echo "  Nodes copied."

# 2. Patch Dockerfile to COPY zammad nodes into /opt
DOCKERFILE="$NODERED_DIR/Dockerfile"
echo "[integrate] Patching Dockerfile..."

if grep -q "$PACKAGE_NAME" "$DOCKERFILE"; then
    echo "  Dockerfile already contains $PACKAGE_NAME"
else
    cp "$DOCKERFILE" "$DOCKERFILE.bak.$(date +%s)"

    sed -i '/^COPY nodes\//a\
RUN mkdir -p /opt/nextcloud-nodes/'"$PACKAGE_NAME"'\
COPY nodes/'"$PACKAGE_NAME"' /opt/nextcloud-nodes/'"$PACKAGE_NAME"'\
' "$DOCKERFILE"

    echo "  Dockerfile patched with COPY for $PACKAGE_NAME."
fi

# 3. Patch entrypoint.sh to install zammad nodes at container start
ENTRYPOINT="$NODERED_DIR/entrypoint.sh"
echo "[integrate] Patching entrypoint.sh..."

if [[ -f "$ENTRYPOINT" ]]; then
    cp "$ENTRYPOINT" "$ENTRYPOINT.bak.$(date +%s)"

    if ! grep -q "$PACKAGE_NAME" "$ENTRYPOINT"; then
        PATCH_TMP=$(mktemp)
        cat > "$PATCH_TMP" << 'PATCH_EOF'

# --- node-red-contrib-nextcloud-zammad ---
SRC_ZAMMAD="/opt/nextcloud-nodes/node-red-contrib-nextcloud-zammad"
DST_ZAMMAD="/data/node_modules/node-red-contrib-nextcloud-zammad"
if [ -d "$SRC_ZAMMAD" ]; then
    echo "[entrypoint] Installing zammad nodes into /data..."
    mkdir -p /data/node_modules
    rm -rf "$DST_ZAMMAD"
    cp -a "$SRC_ZAMMAD" /data/node_modules/
    chown -R node-red:node-red "$DST_ZAMMAD" 2>/dev/null || true
    chmod -R a+rX "$DST_ZAMMAD" 2>/dev/null || true
fi

PATCH_EOF

        awk -v patchfile="$PATCH_TMP" '
            /^exec/ && !done { while ((getline line < patchfile) > 0) print line; close(patchfile); done=1 }
            { print }
        ' "$ENTRYPOINT" > "$ENTRYPOINT.tmp" && mv "$ENTRYPOINT.tmp" "$ENTRYPOINT"
        rm -f "$PATCH_TMP"
        echo "  entrypoint.sh patched (inserted before exec)."
    else
        echo "  entrypoint.sh already contains $PACKAGE_NAME."
    fi
else
    echo "  WARNING: entrypoint.sh not found at $ENTRYPOINT"
fi

# 4. Create zammad nodes package in /opt for entrypoint to copy
OPT_NODES_DIR="$NODERED_DIR/opt/nextcloud-nodes"
echo "[integrate] Creating zammad nodes package in $OPT_NODES_DIR..."
mkdir -p "$OPT_NODES_DIR/$PACKAGE_NAME/nodes"
cp "$SCRIPT_DIR/nodes"/*.js "$OPT_NODES_DIR/$PACKAGE_NAME/nodes/"
cp "$SCRIPT_DIR/nodes"/*.html "$OPT_NODES_DIR/$PACKAGE_NAME/nodes/"
cp "$SCRIPT_DIR/nodes/package.json" "$OPT_NODES_DIR/$PACKAGE_NAME/package.json"
echo "  Package created."

# 5. No docker-compose.yml changes needed - nodes are baked into the image

echo ""
echo "=== Integration Complete ==="
echo ""
echo "Next steps:"
echo "1. Rebuild the Docker image:"
echo "   cd $NODERED_DIR && docker compose build --no-cache"
echo ""
echo "2. Restart the container:"
echo "   docker compose up -d"
echo ""
echo "3. In Node-RED, configure a 'zammad config' node with your API token."
echo ""
echo "4. Import example flows from: $SCRIPT_DIR/flows/"