#!/bin/bash
# Configuration module for Transmission RSS Manager Installation

# Configuration variables with defaults
INSTALL_DIR="/opt/transmission-rss-manager"
SERVICE_NAME="transmission-rss-manager"
USER=$(logname || echo $SUDO_USER)
PORT=3000

# Transmission configuration variables
TRANSMISSION_REMOTE=false
TRANSMISSION_HOST="localhost"
TRANSMISSION_PORT=9091
TRANSMISSION_USER=""
TRANSMISSION_PASS=""
TRANSMISSION_RPC_PATH="/transmission/rpc"
TRANSMISSION_DOWNLOAD_DIR="/var/lib/transmission-daemon/downloads"
TRANSMISSION_DIR_MAPPING="{}"

# Media path defaults
MEDIA_DIR="/mnt/media"
ENABLE_BOOK_SORTING=true

function gather_configuration() {
  echo -e "${BOLD}Installation Configuration:${NC}"
  echo -e "Please provide the following configuration parameters:"
  echo

  read -p "Installation directory [$INSTALL_DIR]: " input_install_dir
  INSTALL_DIR=${input_install_dir:-$INSTALL_DIR}

  read -p "Web interface port [$PORT]: " input_port
  PORT=${input_port:-$PORT}

  read -p "Run as user [$USER]: " input_user
  USER=${input_user:-$USER}

  echo
  echo -e "${BOLD}Transmission Configuration:${NC}"
  echo -e "Configure connection to your Transmission client:"
  echo

  read -p "Is Transmission running on a remote server? (y/n) [n]: " input_remote
  if [[ $input_remote =~ ^[Yy]$ ]]; then
    TRANSMISSION_REMOTE=true
    
    read -p "Remote Transmission host [localhost]: " input_trans_host
    TRANSMISSION_HOST=${input_trans_host:-$TRANSMISSION_HOST}
    
    read -p "Remote Transmission port [9091]: " input_trans_port
    TRANSMISSION_PORT=${input_trans_port:-$TRANSMISSION_PORT}
    
    read -p "Remote Transmission username []: " input_trans_user
    TRANSMISSION_USER=${input_trans_user:-$TRANSMISSION_USER}
    
    read -p "Remote Transmission password []: " input_trans_pass
    TRANSMISSION_PASS=${input_trans_pass:-$TRANSMISSION_PASS}
    
    read -p "Remote Transmission RPC path [/transmission/rpc]: " input_trans_path
    TRANSMISSION_RPC_PATH=${input_trans_path:-$TRANSMISSION_RPC_PATH}
    
    # Configure directory mapping for remote setup
    echo
    echo -e "${YELLOW}Directory Mapping Configuration${NC}"
    echo -e "When using a remote Transmission server, you need to map paths between servers."
    echo -e "For each directory on the remote server, specify the corresponding local directory."
    echo
    
    # Get remote download directory
    read -p "Remote Transmission download directory: " REMOTE_DOWNLOAD_DIR
    REMOTE_DOWNLOAD_DIR=${REMOTE_DOWNLOAD_DIR:-"/var/lib/transmission-daemon/downloads"}
    
    # Get local directory that corresponds to remote download directory
    read -p "Local directory that corresponds to the remote download directory: " LOCAL_DOWNLOAD_DIR
    LOCAL_DOWNLOAD_DIR=${LOCAL_DOWNLOAD_DIR:-"/mnt/transmission-downloads"}
    
    # Create mapping JSON
    TRANSMISSION_DIR_MAPPING=$(cat <<EOF
{
  "$REMOTE_DOWNLOAD_DIR": "$LOCAL_DOWNLOAD_DIR"
}
EOF
)
    
    # Create the local directory
    mkdir -p "$LOCAL_DOWNLOAD_DIR"
    chown -R $USER:$USER "$LOCAL_DOWNLOAD_DIR"
    
    # Ask if want to add more mappings
    while true; do
      read -p "Add another directory mapping? (y/n) [n]: " add_another
      if [[ ! $add_another =~ ^[Yy]$ ]]; then
        break
      fi
      
      read -p "Remote directory path: " remote_dir
      read -p "Corresponding local directory path: " local_dir
      
      if [ -n "$remote_dir" ] && [ -n "$local_dir" ]; then
        # Update mapping JSON (remove the last "}" and add the new mapping)
        TRANSMISSION_DIR_MAPPING="${TRANSMISSION_DIR_MAPPING%\}}, \"$remote_dir\": \"$local_dir\" }"
        
        # Create the local directory
        mkdir -p "$local_dir"
        chown -R $USER:$USER "$local_dir"
        
        echo -e "${GREEN}Mapping added: $remote_dir → $local_dir${NC}"
      fi
    done
    
    # Set Transmission download dir for configuration
    TRANSMISSION_DOWNLOAD_DIR=$REMOTE_DOWNLOAD_DIR
  else
    read -p "Transmission download directory [/var/lib/transmission-daemon/downloads]: " input_trans_dir
    TRANSMISSION_DOWNLOAD_DIR=${input_trans_dir:-$TRANSMISSION_DOWNLOAD_DIR}
  fi

  echo
  echo -e "${BOLD}Media Destination Configuration:${NC}"

  read -p "Media destination base directory [/mnt/media]: " input_media_dir
  MEDIA_DIR=${input_media_dir:-$MEDIA_DIR}

  # Ask about enabling book/magazine sorting
  echo
  echo -e "${BOLD}Content Type Configuration:${NC}"
  read -p "Enable book and magazine sorting? (y/n) [y]: " input_book_sorting
  ENABLE_BOOK_SORTING=true
  if [[ $input_book_sorting =~ ^[Nn]$ ]]; then
    ENABLE_BOOK_SORTING=false
  fi

  echo
  echo -e "${GREEN}Configuration complete!${NC}"
  echo
}