#!/bin/bash

# TODO: Add Crowsnest Support
# TODO: Avoid duplicate printer names
# TODO: Dry run
# TODO: Printer Directory Page in NGINX
# TODO: Fix PolicyKit issues "klippy_uds_address"

# Handle arguments
ARG_HELP=0
ARG_SKIP_APT=0
ARG_NAME=0
ARG_CONFIG=0
ARG_PORT=0
while [[ "$#" -gt 0 ]]; do
    case $1 in
        -h|--help) ARG_HELP=1 ;;
        -a|--skip-apt) ARG_SKIP_APT=1 ;;
        -n|--name) ARG_NAME="$2" ; shift ;;
        -c|--config) ARG_CONFIG="$2" ; shift ;;
        -p|--port) ARG_PORT="$2" ; shift ;;
        *) echo "Unknown Parameter"; exit 3 ;;
    esac
    shift
done

# Prepare global variables
SOURCE=${BASH_SOURCE[0]}
while [ -L "$SOURCE" ]; do
  TARGET=$(readlink "$SOURCE")
  if [[ $TARGET == /* ]]; then
    SOURCE=$TARGET
  else
    DIR=$( dirname "$SOURCE" )
    SOURCE=$DIR/$TARGET
  fi
done
RDIR=$( dirname "$SOURCE" )
ROOT_DIR=$( cd -P "$( dirname "$SOURCE" )" >/dev/null 2>&1 && pwd )
cd $ROOT_DIR

source ./ColorEchoForShell/dist/ColorEcho.bash

if [[ "$ARG_HELP" == 1 ]]; then
    echo.Cyan "HacDC Printewr Setup Script Usage"
    echo.Yellow "./setup.sh [options]"
    echo ""
    echo.BoldPurple "Option            Description"
    echo.Rainbow "-h/--help         Display this help msg"
    echo.Rainbow "-a/--skip-apt     Skip installing apt packages"
    echo.Rainbow "-n/--name         Specify printer name (skips popup)"
    echo.Rainbow "-c/--config       Specify printer config (skips popup)"
    echo.Rainbow "-p/--port         Specify printer port (skips popup)"
    exit 0
fi
# Pull Klipper
git submodule update --init --recursive

# Install packages
if [[ "$ARG_SKIP_APT" == 1 ]]; then
    echo.ICyan "Apt packagees skipped"
else
    echo.Cyan "Installing required packageas"
    for PACKAGE in `cat $ROOT_DIR/config/apt-packages`; do
        sudo apt install -y $PACKAGE
    done
fi

# Name Printer
PRINTER_NAME=""
if [[ "$ARG_NAME" == 0 ]]; then
    NAME_NOT_VALID=true
    while $NAME_NOT_VALID ; do
        PRINTER_NAME=$(dialog --backtitle 'drwho@hackers.town' --inputbox 'Name This Printer' 8 40 "${PRINTER_NAME}" 3>&1 1>&2 2>&3)
        if [[ $PRINTER_NAME =~ ^[a-zA-Z0-9_-]+$ ]]; then
            NAME_NOT_VALID=false
        fi
    done
else
    echo.ICyan "Using passed printer name: $ARG_NAME"
    PRINTER_NAME="$ARG_NAME"
fi

cp -r $ROOT_DIR/dirs $ROOT_DIR/$PRINTER_NAME

# Select Klipper Config
cd $ROOT_DIR/$PRINTER_NAME/klipper
make menuconfig
CONFIG_FILE=""
if [[ "$ARG_CONFIG" == 0 ]]; then
    CONFIG_FILES=(`ls config`)
    CONFIG_FILES+=("Enter_Manually")
    let i=0
    C=()
    for f in ${CONFIG_FILES[@]}; do
        C+=($i $f)
        let i+=1
    done
    CONFIG_INDEX=$(dialog --backtitle "drwho@hackers.town" --title "Printer Selection" --menu "Select Printer Config" --output-fd 1 40 0 1 ${C[@]})
    CONFIG_FILE=${CONFIG_FILES[$CONFIG_INDEX]}
    if [[ $CONFIG_FILE == "Enter_Manually" ]]; then
        MANUAL_FILE=""
        while [ ! -f "${MANUAL_FILE}" ]; do
            MANUAL_FILE=$(dialog --backtitle "drwho@hackers.town" --title "Manual Config Selection" --inputbox "Enter Full Config File Path" 8 40 "${MANUAL_FILE}" 3>&1 1>&2 2>&3)
        done
        CONFIG_FILE=$MANUAL_FILE
    else
        # TODO: maybe replace this with the full path?
        CONFIG_FILE="./config/$CONFIG_FILE"
    fi
else
    echo.ICyan "Using passed config file"
    CONFIG_FILE="$ARG_CONFIG"
fi

# Select Serial Device
DEVICE=""
if [[ "$ARG_PORT" == 0 ]]; then
    DEVICES=(`ls /dev/serial/by-id/`)
    DEVICES+=("Enter_Manually")
    let i=0
    C=()
    for f in ${DEVICES[@]}; do
        C+=($i $f)
        let i+=1
    done
    DEVICE_INDEX=$(dialog --backtitle "drwho@hackers.town" --title "USB Device Selection" --menu "Select USB Device" --output-fd 1 40 0 1 ${C[@]})
    DEVICE=${DEVICES[$DEVICE_INDEX]}

    if [[ $DEVICE == "Enter_Manually" ]]; then
        MANUAL_FILE=""
        while [ ! -f "${MANUAL_FILE}" ]; do
            MANUAL_FILE=$(dialog --backtitle "drwho@hackers.town" --title "Manual Device Selection" --inputbox "Enter Full Device File Path" 8 40 "${MANUAL_FILE}" 3>&1 1>&2 2>&3)
        done
        DEVICE="/dev/serial/by-id/$MANUAL_FILE"
    fi
else
    echo.ICyan "Using passed serial port"
    DEVICE="$ARG_PORT"
fi

# Build Klipper
echo.Cyan "Compile Klipper Firmware"
cp $CONFIG_FILE $ROOT_DIR/$PRINTER_NAME/klipper/printer.cfg
sed -i -e "s/^serial: .\+$/LINEHERE/g" "$ROOT_DIR/$PRINTER_NAME/klipper/printer.cfg"
cat $ROOT_DIR/$PRINTER_NAME/klipper/printer.cfg | replace "LINEHERE" "serial: $DEVICE" > $ROOT_DIR/$PRINTER_NAME/klipper/tmp.cfg
rm $ROOT_DIR/$PRINTER_NAME/klipper/printer.cfg
mv $ROOT_DIR/$PRINTER_NAME/klipper/tmp.cfg $ROOT_DIR/$PRINTER_NAME/klipper/printer.cfg
make -j$(nproc)

# Flash Firmware
echo.Cyan "Flash Device"
make flash FLASH_DEVICE=$DEVICE

# Copy over printer config file
echo.Cyan "Setup printer.cfg"
cd $ROOT_DIR/$PRINTER_NAME
cat $ROOT_DIR/config/macros.gcode >> printer.cfg.tmp
cat klipper/printer.cfg >> printer.cfg.tmp
mv printer.cfg.tmp printer_data/config/printer.cfg

# Apply Edits to Configs
echo.Cyan "Setup Moonraker"
cd $ROOT_DIR/$PRINTER_NAME/printer_data/config
sed -i -e "s/PRINTERNAME/$PRINTER_NAME/g" "moonraker.conf"
sed -i -e "s/pi/$USER/g" "moonraker.conf"
cat "moonraker.conf" | replace "~/" "$HOME/" > m.tmp
rm moonraker.conf
mv m.tmp moonraker.conf
NUM_OF_PRIOR_INSTALLS=`ls /etc/systemd/system/*-klipper.service | wc -l`
NEW_PORT=$((NUM_OF_PRIOR_INSTALLS + 7125))
echo.ICyan "Using port ${NEW_PORT} for Moonraker"
sed -i -e "s/PORT/$NEW_PORT/g" "moonraker.conf"

echo.Cyan "Setup Mainsail Config"
cd $ROOT_DIR/$PRINTER_NAME/mainsail-config
cat "client.cfg" | replace "~/printer_data" "$HOME/$PRINTER_NAME/printer_data" > tmp.client.cfg
rm client.cfg
mv tmp.client.cfg client.cfg
sed -i -e "s/pi/$USER/g" "client.cfg"

# Download Mainsail
cd $ROOT_DIR
echo.Cyan "Downloading Mainsail"
wget -q -O mainsail.zip https://github.com/mainsail-crew/mainsail/releases/latest/download/mainsail.zip
unzip -o mainsail.zip -d $PRINTER_NAME/mainsail
rm mainsail.zip

echo.ICyan "Installing base nginx configs"
if [ ! -f /etc/nginx/conf.d/upstreams.conf ]; then
    sudo cp $ROOT_DIR/config/nginx/upstreams.conf /etc/nginx/conf.d/upstreams.conf
    sudo chown root:root /etc/nginx/conf.d/upstreams.conf
else 
    echo.ICyan "upstreams.conf already exists"
fi

if [ ! -f /etc/nginx/sites-available/site.conf ]; then
    sudo cp $ROOT_DIR/config/nginx/site.conf /etc/nginx/sites-available/site.conf
    sudo chown root:root /etc/nginx/sites-available/site.conf
else 
    echo.ICyan "site.conf already exists"
fi

if [ ! -f /etc/nginx/conf.d/common_vars.conf ]; then
    sudo cp $ROOT_DIR/config/nginx/common_vars.conf /etc/nginx/conf.d/common_vars.conf
    sudo chown root:root /etc/nginx/conf.d/common_vars.conf
else 
    echo.ICyan "common_vars.conf already exists"
fi

if [ ! -d /etc/nginx/mainsail/sites ]; then
    sudo mkdir -p /etc/nginx/mainsail/sites
fi
if [ ! -d /etc/nginx/mainsail/upstream ]; then
    sudo mkdir -p /etc/nginx/mainsail/upstream
fi
if [ ! -d /etc/nginx/mainsail/proxy ]; then
    sudo mkdir -p /etc/nginx/mainsail/proxy
fi

echo.Cyan "Generate and Install $PRINTER_NAME nginx configs"
cat $ROOT_DIR/config/nginx/mainsail-upstream.conf | replace "PRINTERNAMELC" "${PRINTER_NAME,,}" | replace "PORT" "$NEW_PORT" > $ROOT_DIR/$PRINTER_NAME/upstream.conf
PROXY_PORT=$((NEW_PORT - 7000 + 8000))
cat $ROOT_DIR/config/nginx/mainsail-site.conf | replace "PRINTERNAMELC" "${PRINTER_NAME,,}" | replace "/home/pi" "$HOME" | replace "PRINTERNAME" "$PRINTER_NAME" | replace "PORT" "$PROXY_PORT" > $ROOT_DIR/$PRINTER_NAME/site.conf
cat $ROOT_DIR/config/nginx/mainsail-proxy.conf | replace "PRINTERNAMELC" "${PRINTER_NAME,,}" | replace "PORT" "$PROXY_PORT" > $ROOT_DIR/$PRINTER_NAME/proxy.conf
# add proxy
sudo cp $ROOT_DIR/$PRINTER_NAME/upstream.conf /etc/nginx/mainsail/upstream/$PRINTER_NAME.conf
sudo cp $ROOT_DIR/$PRINTER_NAME/site.conf /etc/nginx/sites-available/$PRINTER_NAME.conf
sudo cp $ROOT_DIR/$PRINTER_NAME/proxy.conf /etc/nginx/mainsail/proxy/$PRINTER_NAME.conf
sudo ln -s /etc/nginx/sites-available/$PRINTER_NAME.conf /etc/nginx/sites-enabled/$PRINTER_NAME.conf

sudo chown -R root:root /etc/nginx/mainsail
if [ -f /etc/nginx/sites-enabled/site.conf ]; then
    echo.ICyan "Restart nginx if the site is already enabled"
    sudo systemctl stop nginx
fi

# Setup klipper python env
echo.Cyan "Setup Klipper Python Virtual Environment"
cd $ROOT_DIR/$PRINTER_NAME
/usr/bin/virtualenv klippy-env
$ROOT_DIR/$PRINTER_NAME/klippy-env/bin/pip install -r $ROOT_DIR/$PRINTER_NAME/klipper/scripts/klippy-requirements.txt
touch $ROOT_DIR/$PRINTER_NAME/printer_data/comms/klippy.sock

# Setup moonraker python env
echo.Cyan "Setup Moonraker Python Virtual Environment"
cd $ROOT_DIR/$PRINTER_NAME
/usr/bin/virtualenv moonraker-env
$ROOT_DIR/$PRINTER_NAME/moonraker-env/bin/pip install -r $ROOT_DIR/$PRINTER_NAME/moonraker/scripts/moonraker-requirements.txt

# Configure Systemd Environment Files
echo.Cyan "Config Systemd Envs"
cd $ROOT_DIR/$PRINTER_NAME/printer_data/systemd
for ENV in *.env; do
    cat "$ENV" | replace "/home/pi" "$HOME" | replace "PRINTERNAME" "$PRINTER_NAME" | replace "PRINTERDATA" "$PRINTER_NAME"> "$ENV.tmp"
    rm "$ENV"
    mv "$ENV.tmp" "$ENV"
done

# Copy To Final Location
echo.Cyan "Run Copy"
mkdir -p $HOME/$PRINTER_NAME
cp -r $ROOT_DIR/$PRINTER_NAME/* $HOME/$PRINTER_NAME

# Create Empty dirs
dirs=(logs gcodes certs backup)
for d in ${dirs[@]}; do
    D="$HOME/$PRINTER_NAME/printer_data/$d"
    echo.ICyan "make $D"
    mkdir -p $D
done

touch $HOME/$PRINTER_NAME/printer_data/logs/klippy.log

# Configure System Services
cd $ROOT_DIR/config/services
SERVICES=()
for f in *.service; do
    echo.Cyan "Setup ${f}"
    SERVICES+=($f)
    cp "${f}" "${ROOT_DIR}/${PRINTER_NAME}/${PRINTER_NAME}-${f}"
    sed -i -e "s/PRINTERNAME/$PRINTER_NAME/g" "${ROOT_DIR}/${PRINTER_NAME}/${PRINTER_NAME}-${f}"
    sed -i -e "s/pi/$USER/g" "${ROOT_DIR}/${PRINTER_NAME}/${PRINTER_NAME}-${f}"
done

# Install System Services
echo.Cyan "Install Services"
sudo cp $ROOT_DIR/$PRINTER_NAME/*.service /etc/systemd/system/
sudo systemctl daemon-reload
for svc in ${SERVICES[@]}; do
    sudo systemctl enable $PRINTER_NAME-$svc
    sudo systemctl start $PRINTER_NAME-$svc
done

# Cleanup
$HOME/$PRINTER_NAME/moonraker/scripts/set-policykit-rules.sh -z
ln -s $HOME/$PRINTER_NAME/mainsail-config/client.cfg $HOME/$PRINTER_NAME/printer_data/config/mainsail.cfg
sudo systemctl restart $PRINTER_NAME-klipper.service
sudo systemctl restart $PRINTER_NAME-moonraker.service
echo.BoldCyan "${PRINTER_NAME} is setup with moonraker on port ${NEW_PORT}"
sudo nginx -t
if [ ! -f /etc/nginx/sites-enabled/site.conf ]; then
    echo.Red "NGINX config not enabled, don't forget to symlink the site.conf file from sites-available to sites-enabled"
else
    sudo systemctl start nginx
fi