#!/bin/bash - not strictly necessary, but helps nano with syntax highlighting.

# Source bash specific set up,
[[ -f "$HOME/.bashrc" ]] && . "$HOME/.bashrc"

# Environment.
export EDITOR="nano"
export LANG="en_GB.UTF-8"
export LC_COLLATE="POSIX"	# 'C' causes issues with some applications
# export LC_CTYPE="POSIX"	# Not sure why I set this in the first place...
export LESS='-RM -j.5 -i -PM?f%F:stdin.    --    Page %dt of %D    --    %lt/%L (%Pt\%)$'
export PAGER="less"
export VISUAL="$EDITOR"
hash lesspipe >/dev/null 2>&1 && eval "$(SHELL=/bin/sh lesspipe)"

# Platform specific set up.
PLATFORM="${PLATFORM:-$(uname -s)}"
if [[ "$PLATFORM" = "Linux" ]]; then
  # shellcheck disable=SC2155
  export GPG_TTY="$(tty)"
  export I_WANT_A_BROKEN_PS=1
  export LYNX_CFG="$HOME/.lynx.cfg"
  export LYNX_LSS="$HOME/.lynx.lss"
  export MANPAGER="less"
  export MANPATH="$HOME/.local/share/man:$MANPATH"
  export PATH="/opt/sbin:/opt/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
  hash dircolors >/dev/null 2>&1 && eval "$(dircolors -b "$HOME/.dir_colors")"
  hash gpgconf >/dev/null 2>&1 && {
    GPG_SOCK_DIR="$(gpgconf --list-dirs | awk -F : '/socketdir:/ { print $2 }')"
    # shellcheck disable=SC2174
    [[ ! -e "$GPG_SOCK_DIR" ]] && mkdir -m 700 -p "$GPG_SOCK_DIR"
    [[ ! -e "$GPG_SOCK_DIR/S.gpg-agent" ]] && [[ -e "$HOME/.gnupg/S.gpg-agent" ]] && ln -sf "$HOME/.gnupg/S.gpg-agent" "$GPG_SOCK_DIR"/
    unset GPG_SOCK_DIR
  }
  hash gpg-connect-agent >/dev/null 2>&1 && gpg-connect-agent updatestartuptty /bye >/dev/null 2>&1
  [[ ! -e "$HOME/.config/lxterminal/lxterminal.conf" ]] && (
    cd "$HOME/.config/lxterminal" 2>/dev/null || exit 1
    [[ -e "lxterminal.conf-${HOSTNAME%%.*}" ]] && ln -sf "lxterminal.conf-${HOSTNAME%%.*}" "lxterminal.conf"
  )
elif [[ "$PLATFORM" = "Darwin" ]]; then
  export LSCOLORS="ExGxdxdxCxDxDxbcacbeae"
  export MANPAGER="less -Mis -PM'Page %dt$'"
  export MANPATH="/opt/local/share/man:$MANPATH"
  export PATH="/opt/local/libexec/gnubin:/opt/local/sbin:/opt/local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
else
  printf "%s: %s\\n" "${BASH_SOURCE##*/}" "unsupported platform: $PLATFORM" >&2
fi

# Add bin directories to PATH.
[[ -d "$HOME/files/bin" ]] && export PATH="$HOME/files/bin:$PATH"
[[ -d "$HOME/.local/bin" ]] && export PATH="$HOME/.local/bin:$PATH"
[[ -d "$HOME/bin" ]] && export PATH="$HOME/bin:$PATH"

# Screen.
hash screen >/dev/null 2>&1 && {
  [[ -e "$HOME/.screenrc-${HOSTNAME%%.*}" ]] && export SCREENRC="$HOME/.screenrc-${HOSTNAME%%.*}"
  export SCREENDIR="$HOME/.screen-${HOSTNAME%%.*}"
  if [[ -n "$SSH_TTY" ]]; then
    if [[ -n "$STY" ]]; then
      # shellcheck disable=SC2154
      printf "%s\\n\\n" "Screen $STY, window $WINDOW."
    else
      SCREENS="$(screen -ls | grep '[[:alpha:]]' | grep -E -v '^([[:digit:]]+|No) Socket(s)?')"
      if [[ -n "$SCREENS" ]]; then
        printf "%s\\n\\n" "$SCREENS"
      else
        printf "%s\\n\\n" "No screens."
      fi
      unset SCREENS
    fi
  elif [[ -n "$STY" ]]; then
    # shellcheck disable=SC2154
    printf "%s\\n\\n" "Screen $STY, window $WINDOW."
  else
    TTY="$(tty | cut -d/ -f3-)"
    SCREENS="$(screen -ls | grep -F "${HOSTNAME%%.*}" | grep -F "${TTY//\//-}")"
    # This has to be an echo, not printf.
    case "$(echo "${SCREENS:--n}" | wc -l)" in
      0)
        # No screens found - start a new instance if on a tty.
        # Disabled this because screens should be started on chuckie not the desktop/laptop.
        # [[ "$TTY" == tty* ]] && screen
        :
        ;;
      1)
        # Just one screen - reconnect if it's not dead.
        if (( $(printf "%s" "$SCREENS" | grep -c -F 'Dead') == 1 )); then
          printf "%s:\\n" "Found dead screen for $TTY"
          printf "%s\\n" "$SCREENS" | sed -e 's/^/    /g'
        else
          screen -dr "${TTY//\//-}.${HOSTNAME%%.*}"
        fi
        ;;
      *)
        # Multiple screens - output a list
        printf "%s:\\n" "Multiple screens found for $TTY"
        printf "%s\\n" "$SCREENS" | sed -e 's/^/    /g'
        ;;
    esac
  fi
  unset SCREENS TTY
}