# Souce bash specific set up,
[ -f ~/.bashrc ] && . ~/.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="-RMi -PM?f%F:stdin.    --    Page %dt of %D    --    %lt/%L (%Pt\%)$"
export MANPAGER="less -Mis -PM'Page %dt$'"
export PAGER="less"
export PATH="/usr/local/sbin:/usr/sbin:/opt/sbin:/sbin:$PATH"
export VISUAL="$EDITOR"
[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"

# Platform specific set up.
_PLATFORM="$(uname -s)"
if [ "$_PLATFORM" = "Linux" ]; then
  export I_WANT_A_BROKEN_PS=1
  export LYNX_CFG="$HOME/.lynx.cfg"
  export LYNX_LSS="$HOME/.lynx.lss"
  export MANPATH="~/.local/share/man:$MANPATH"
  hash dircolors >/dev/null 2>&1 && eval "$(dircolors -b ~/.dir_colors)"
elif [ "$_PLATFORM" = "Darwin" ]; then
  export LSCOLORS="ExGxdxdxCxDxDxbcacbeae"
  export MANPATH="/opt/local/share/man:$MANPATH"
  export PATH="/opt/local/sbin:/opt/local/bin:$PATH"
else
  echo "${BASH_SOURCE##*/}: unsupported platform: $_PLATFORM" >&2
fi
unset _PLATFORM

# 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"

# Make ssh-agent work better.
hash ssh-add ssh-agent >/dev/null 2>&1 && {
  if [[ -z "$SSH_AUTH_SOCK" ]]; then
    # Try to find an existing agent socket to connect to.
    SSH_AUTH_SOCK="$(_find_agent_sock)"
    if ((${PIPESTATUS[0]} == 0)); then
      # Found a socket.
      export SSH_AUTH_SOCK
      echo "Connected to ssh-agent."
      alias ssh='ssh-add -l >/dev/null 2>&1 && unalias ssh || { ssh-add && unalias ssh; }; ssh'
    else
      # No viable socket - try to start an agent.
      eval "$(ssh-agent -s | grep -v 'echo')"
      ssh-add -l >/dev/null 2>&1
      if (( $? < 2 )); then
        # Agent started - add new socket to the agent sockets file.
        exec 9>~/.ssh/agents.lock
        if flock -E 10 -w 0.5 9; then
          if _push_agent_sock; then
            echo "Started new ssh-agent."
          else
            echo "$(tput setaf 1 || tput AF 1)Started new ssh-agent, but failed to register socket!$(tput op)"
          fi
        else
          echo "$(tput setaf 1 || tput AF 1)Failed to obtain lockfile!$(tput op)"
        fi
        exec 9>&-
        alias ssh='ssh-add -l >/dev/null 2>&1 && unalias ssh || { ssh-add && unalias ssh; }; ssh'
      else
        echo "$(tput setaf 1 || tput AF 1)Failed to start new ssh-agent!$(tput op)"
        unset SSH_AGENT_PID SSH_AUTH_SOCK
      fi
    fi
  else
    # Got a forwarded ssh-agent connection.
    export SSH_AUTH_SOCK
    ssh-add -l >/dev/null 2>&1
    if (( $? < 2 )); then
      # Agent is connected - add new socket to the agent sockets file.
      exec 9>~/.ssh/agents.lock
      if flock -E 10 -w 0.5 9; then
        if _push_agent_sock; then
          echo "Connected to forwarded ssh-agent."
        else
          echo -e "$(tput setaf 1 || tput AF 1)Failed to register forwarded ssh-agent socket!$(tput op)"
        fi
      else
        echo "$(tput setaf 1 || tput AF 1)Failed to obtain lockfile!$(tput op)"
      fi
      exec 9>&-
      alias ssh='ssh-add -l >/dev/null 2>&1 && unalias ssh || { ssh-add && unalias ssh; }; ssh'
    else
      echo -e "$(tput setaf 1 || tput AF 1)Problem connecting to forwarded ssh-agent!$(tput op)"
    fi
  fi
  echo
}

# Screen.
hash screen >/dev/null 2>&1 && {
  if [ ! -e ~/.hushlogin ]; then
    if [ ! -z "$STY" ]; then
      echo "Screen $STY, window $WINDOW."
      echo
    else
      _SCREENS="$( screen -ls | grep '[[:alpha:]]' | egrep -v '^([[:digit:]]+|No) Socket(s)?' )"
      if [ -n "$_SCREENS" ]; then
        echo "$_SCREENS"
        echo
      else
        echo "No screens."
        echo
      fi
      unset _SCREENS
    fi
  fi
}

# Mail check.
[ ! -z "$SSH_CONNECTION" ] && {
  if [ -s /var/spool/mail/$USER ]; then
    if [ -N /var/spool/mail/$USER ]; then
      echo "You have new mail."
      echo
    else
      echo "You have mail."
      echo
    fi
#  else
#    echo "No mail."
#    echo
  fi
}