#!/bin/bash
# Telfax Enterprise - Complete Production Deployment Script
#
# This script deploys Telfax as a production-ready fax server
# Supports: macOS (launchd) and Linux (systemd)

set -e

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

echo -e "${GREEN}=== Telfax Enterprise Fax Server Deployment ===${NC}"
echo ""

# Detect OS
OS=$(uname -s)
case "$OS" in
    Darwin)
        echo "Detected: macOS"
        INSTALL_DIR="/usr/local"
        CONFIG_DIR="$INSTALL_DIR/etc/telfax"
        DATA_DIR="$INSTALL_DIR/var/lib/telfax"
        LOG_DIR="$INSTALL_DIR/var/log/telfax"
        ;;
    Linux)
        echo "Detected: Linux"
        INSTALL_DIR="/opt/telfax"
        CONFIG_DIR="/etc/telfax"
        DATA_DIR="/var/lib/telfax"
        LOG_DIR="/var/log/telfax"
        ;;
    *)
        echo -e "${RED}Unsupported OS: $OS${NC}"
        exit 1
        ;;
esac

# Check for root privileges
if [ "$EUID" -ne 0 ]; then
    echo -e "${RED}Please run as root (sudo ./deploy.sh)${NC}"
    exit 1
fi

# Create directories
echo -e "${YELLOW}Creating directories...${NC}"
mkdir -p "$INSTALL_DIR/bin"
mkdir -p "$CONFIG_DIR"
mkdir -p "$DATA_DIR"
mkdir -p "$LOG_DIR"

# Build binary
echo -e "${YELLOW}Building Telfax binary...${NC}"
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
PROJECT_DIR="$(dirname "$SCRIPT_DIR")"

cd "$PROJECT_DIR"
cargo build --release --features server

if [ ! -f "target/release/telfax" ]; then
    echo -e "${RED}Build failed! Binary not found.${NC}"
    exit 1
fi

# Install binary
echo -e "${YELLOW}Installing binary...${NC}"
cp target/release/telfax "$INSTALL_DIR/bin/"
chmod +x "$INSTALL_DIR/bin/telfax"

# Install configuration
if [ ! -f "$CONFIG_DIR/config.toml" ]; then
    echo -e "${YELLOW}Installing configuration...${NC}"
    cp deployment/config.enterprise.toml "$CONFIG_DIR/config.toml"
    echo -e "${GREEN}Configuration installed to: $CONFIG_DIR/config.toml${NC}"
else
    echo -e "${YELLOW}Configuration already exists, skipping...${NC}"
fi

# Create database directory
echo -e "${YELLOW}Initializing databases...${NC}"
mkdir -p "$(dirname "$DATA_DIR/queue.db")"
mkdir -p "$(dirname "$DATA_DIR/address_book.db")"

# Install service
echo -e "${YELLOW}Installing system service...${NC}"
case "$OS" in
    Darwin)
        # macOS launchd
        cat > /Library/LaunchDaemons/com.telfax.server.plist <<EOF
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>com.telfax.server</string>
    
    <key>ProgramArguments</key>
    <array>
        <string>$INSTALL_DIR/bin/telfax</string>
        <string>serve</string>
        <string>--config</string>
        <string>$CONFIG_DIR/config.toml</string>
    </array>
    
    <key>RunAtLoad</key>
    <true/>
    
    <key>KeepAlive</key>
    <true/>
    
    <key>StandardOutPath</key>
    <string>$LOG_DIR/telfax.log</string>
    
    <key>StandardErrorPath</key>
    <string>$LOG_DIR/telfax-error.log</string>
    
    <key>EnvironmentVariables</key>
    <dict>
        <key>RUST_LOG</key>
        <string>info</string>
    </dict>
    
    <key>WorkingDirectory</key>
    <string>$DATA_DIR</string>
</dict>
</plist>
EOF
        chmod 644 /Library/LaunchDaemons/com.telfax.server.plist
        ;;
        
    Linux)
        # Linux systemd
        cat > /etc/systemd/system/telfax.service <<EOF
[Unit]
Description=Telfax Enterprise Fax Server
After=network.target

[Service]
Type=simple
User=root
WorkingDirectory=$DATA_DIR
ExecStart=$INSTALL_DIR/bin/telfax serve --config $CONFIG_DIR/config.toml
Restart=on-failure
RestartSec=10
TimeoutStartSec=30
TimeoutStopSec=30

StandardOutput=journal
StandardError=journal
SyslogIdentifier=telfax

Environment=RUST_LOG=info

NoNewPrivileges=true
ProtectSystem=strict
ProtectHome=true
PrivateTmp=true

ReadWritePaths=$DATA_DIR $LOG_DIR /dev

LimitNOFILE=65536
LimitNPROC=4096

[Install]
WantedBy=multi-user.target
EOF
        chmod 644 /etc/systemd/system/telfax.service
        systemctl daemon-reload
        ;;
esac

# Set permissions
echo -e "${YELLOW}Setting permissions...${NC}"
case "$OS" in
    Darwin)
        chown -R root:wheel "$CONFIG_DIR"
        chown -R root:wheel "$DATA_DIR"
        chown -R root:wheel "$LOG_DIR"
        ;;
    Linux)
        chown -R root:root "$CONFIG_DIR"
        chown -R root:root "$DATA_DIR"
        chown -R root:root "$LOG_DIR"
        ;;
esac

chmod 600 "$CONFIG_DIR/config.toml"

# Create environment file
echo -e "${YELLOW}Creating environment file...${NC}"
cat > "$CONFIG_DIR/telfax.env" <<EOF
# Telfax Environment Variables
# Source this file for quick access: source /etc/telfax/telfax.env

export TELFAX_BIN="$INSTALL_DIR/bin/telfax"
export TELFAX_CONFIG="$CONFIG_DIR/config.toml"
export TELFAX_DATA="$DATA_DIR"
export TELFAX_LOG="$LOG_DIR"

# Quick commands
alias telfax='$TELFAX_BIN --config $TELFAX_CONFIG'
alias telfax-log='tail -f $TELFAX_LOG/telfax.log'
alias telfax-status='$TELFAX_BIN status'
EOF

echo ""
echo -e "${GREEN}=== Installation Complete ===${NC}"
echo ""
echo "Binary:          $INSTALL_DIR/bin/telfax"
echo "Configuration:   $CONFIG_DIR/config.toml"
echo "Data directory:  $DATA_DIR"
echo "Log directory:   $LOG_DIR"
echo ""
echo -e "${YELLOW}Next Steps:${NC}"
echo ""
echo "1. Edit configuration:"
echo "   nano $CONFIG_DIR/config.toml"
echo ""
echo "2. Configure authentication tokens (IMPORTANT!)"
echo "   - Change all default tokens in [auth.tokens]"
echo "   - Configure email settings if needed"
echo ""
echo "3. Configure modems:"
echo "   - Set correct device paths in [[modems]]"
echo "   - Adjust class and priority as needed"
echo ""
echo "4. Start the service:"
case "$OS" in
    Darwin)
        echo "   sudo launchctl load -w /Library/LaunchDaemons/com.telfax.server.plist"
        echo ""
        echo "5. Check service status:"
        echo "   sudo launchctl list | grep telfax"
        ;;
    Linux)
        echo "   sudo systemctl enable telfax"
        echo "   sudo systemctl start telfax"
        echo ""
        echo "5. Check service status:"
        echo "   sudo systemctl status telfax"
        ;;
esac
echo ""
echo "6. View logs:"
echo "   tail -f $LOG_DIR/telfax.log"
echo ""
echo "7. Test API:"
echo "   curl http://localhost:3000/api/v1/status"
echo ""
echo "8. Open Web UI:"
echo "   http://localhost:3000"
echo ""
echo -e "${GREEN}Deployment successful!${NC}"
echo ""

# Optional: Start service automatically
read -p "Start Telfax service now? (y/n) " -n 1 -r
echo
if [[ $REPLY =~ ^[Yy]$ ]]; then
    case "$OS" in
        Darwin)
            launchctl load -w /Library/LaunchDaemons/com.telfax.server.plist
            echo -e "${GREEN}Service started!${NC}"
            ;;
        Linux)
            systemctl enable telfax
            systemctl start telfax
            echo -e "${GREEN}Service started!${NC}"
            ;;
    esac
else
    echo -e "${YELLOW}Service not started. Start manually when ready.${NC}"
fi