#!/bin/bash
# Auto-deploy script for LXC 151 (matrix homeserver)
# Handles: hookshot transformation functions, livekit service file (graceful)
# Triggered by: Gitea webhook on push to main
set -euo pipefail

REPO_DIR="/opt/matrix-config"
LOG="/var/log/matrix-deploy.log"
CLONE_URL="https://code.lotusguild.org/LotusGuild/matrix.git"
ENV_FILE="/etc/matrix-deploy.env"

exec >> "$LOG" 2>&1
echo "=== $(date) === LXC151 deploy triggered ==="

# Load env (MATRIX_TOKEN, MATRIX_SERVER, MATRIX_ROOM)
if [ -f "$ENV_FILE" ]; then
    source "$ENV_FILE"
fi

# Clone or pull
if [ ! -d "$REPO_DIR/.git" ]; then
    git clone "$CLONE_URL" "$REPO_DIR"
else
    cd "$REPO_DIR"
    git fetch --all
    PREV=$(git rev-parse HEAD)
    git reset --hard origin/main
    NEW=$(git rev-parse HEAD)
    CHANGED=$(git diff --name-only "$PREV" "$NEW")
    echo "Changed files: $CHANGED"

    # Hookshot transforms
    if echo "$CHANGED" | grep -q '^hookshot/'; then
        echo "Deploying hookshot transforms..."
        export MATRIX_TOKEN MATRIX_SERVER MATRIX_ROOM
        bash "$REPO_DIR/hookshot/deploy.sh"
    fi

    # Livekit service file — graceful restart (never kill active calls)
    if echo "$CHANGED" | grep -q '^systemd/livekit-server.service'; then
        echo "livekit-server.service changed — staging graceful restart..."
        cp "$REPO_DIR/systemd/livekit-server.service" /etc/systemd/system/livekit-server.service
        systemctl daemon-reload
        touch /run/livekit-restart-pending
        echo "Restart pending — will apply when no active calls."
    fi
fi

echo "=== $(date) === LXC151 deploy complete ==="