# Source 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\%)$"
export PAGER="less"
export PATH="/usr/local/sbin:/usr/sbin:/opt/sbin:/sbin:$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 MANPAGER="less"
  export MANPATH="$HOME/.local/share/man:$MANPATH"
  hash dircolors >/dev/null 2>&1 && eval "$(dircolors -b ~/.dir_colors)"
elif [[ "$_PLATFORM" = "Darwin" ]]; then
  export LSCOLORS="ExGxdxdxCxDxDxbcacbeae"
  export MANPAGER="less -Mis -PM'Page %dt$'"
  export MANPATH="/opt/local/share/man:$MANPATH"
  export PATH="/opt/local/sbin:/opt/local/bin:$PATH"
else
  echo "${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"

# Make ssh-agent work better.
hash ssh-add ssh-agent >/dev/null 2>&1 && {
  if [[ -e "$SSH_AUTH_SOCK" ]]; then
    # Got a possible ssh-agent connection.
    export SSH_AUTH_SOCK
    _OUTPUT="$(ssh-add -l 2>&1 >/dev/null)"
    if (( ${PIPESTATUS[0]} < 2 )) && [[ -z "$_OUTPUT" ]]; then
      # Agent is connected.
      _lock_agents_file && {
        if _push_agent_sock; then
          echo "Connected to ssh-agent."
        else
          echo -e "$(tput setaf 3)Connected to ssh-agent, but failed to register socket.$(tput op)"
          _SSH_AGENT_REG_FAILED=1
        fi
      }
      _unlock_agents_file
      alias ssh='ssh-add -l >/dev/null 2>&1 && unalias ssh || { ssh-add && unalias ssh; }; ssh'
    else
      # Agent connection failed.
      SSH_AUTH_SOCK="$(_find_agent_sock)"
      if ((${PIPESTATUS[0]} == 0)); then
        # Found a new socket.
        export SSH_AUTH_SOCK
        _lock_agents_file && {
          if _push_agent_sock; then
            echo "Connected to alternate ssh-agent - you may need to re-add keys."
          else
            echo "$(tput setaf 3)Connected to, but failed to register, alternate ssh-agent - you may need to re-add keys.$(tput op)"
            _SSH_AGENT_REG_FAILED=1
          fi
        }
        _unlock_agents_file
        alias ssh='ssh-add -l >/dev/null 2>&1 && unalias ssh || { ssh-add && unalias ssh; }; ssh'
      else
        echo -e "$(tput setaf 1)Lost connection to ssh-agent - no alternate available!$(tput op)"
      fi
    fi
  else
    # No ssh-agent connection.
    SSH_AUTH_SOCK="$(_find_agent_sock)"
    if ((${PIPESTATUS[0]} == 0)); then
      # Found a socket.
      export SSH_AUTH_SOCK
      _lock_agents_file && {
        if _push_agent_sock; then
          echo "Connected to ssh-agent."
        else
          echo "$(tput setaf 3)Connected to, but failed to register, ssh-agent.$(tput op)"
          _SSH_AGENT_REG_FAILED=1
        fi
      }
      _unlock_agents_file
      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 "$(ssh-agent -s | grep -v 'echo')"
      _OUTPUT="$(ssh-add -l 2>&1 >/dev/null)"
      if (( ${PIPESTATUS[0]} < 2 )) && [[ -z "$_OUTPUT" ]]; then
        # Agent started - register socket in the agents file.
        _lock_agents_file && {
          if _push_agent_sock; then
            echo "Started new ssh-agent."
          else
            echo "$(tput setaf 3)Started, but failed to register, new ssh-agent$(tput op)"
            _SSH_AGENT_REG_FAILED=1
          fi
        }
        _unlock_agents_file
        alias ssh='ssh-add -l >/dev/null 2>&1 && unalias ssh || { ssh-add && unalias ssh; }; ssh'
      else
        echo "$(tput setaf 1)Failed to start new ssh-agent!$(tput op)"
        unset SSH_AGENT_PID SSH_AUTH_SOCK
      fi
    fi
  fi
  echo
}
unset _OUTPUT _PLATFORM

# Screen.
hash screen >/dev/null 2>&1 && {
  # Reattach existing screens.
  screen_attach

  # Output some screen info.
  export SCREENDIR="$HOME/.screen-${HOSTNAME%%.*}"
  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
}