#!/bin/sh

# Environment variables for X and all text-mode shells: both bash,
# Xsession and scripts run by cron source this.  So POSIX only.

# We have calls to `which` which we expect to fail
set +e

# ---- SDF backspace fix from SDF .profile

stty erase '^h' echoe

# ---- choose editor depending on what's available

if [ "$DESKTOP_SESSION" = "i3" ]; then
    ec_args="-c"
else
    ec_args="-t"
fi

emacsclient=$(which emacsclient 2>/dev/null)
mg=$(which mg 2>/dev/null)
# best case: emacsclient and mg available
if [ -x "$emacsclient" -a -x "$mg" ]; then
    EDITOR="emacsclient -amg $ec_args"
    ALTERNATE_EDITOR="mg"
else
    # only emacsclient, so change alternate editor
    if [ -x "$emacsclient" ]; then
        EDITOR="emacsclient -avi $ec_args"
        ALTERNATE_EDITOR="vi"
    else
        # no emacsclient, so see if we can fall back to mg
        if [ -x "$mg" ]; then
            EDITOR="mg"
            ALTERNATE_EDITOR="vi"
        # worse case: assume vi is available
        else
            EDITOR="vi"
        fi
    fi
fi
unset ec_args
unset emacsclient
unset mg
export EDITOR
VISUAL=$EDITOR
export VISUAL

# ---- set $PATH

# this function prepends $addition to $PATH iff $addition isn't
# already in $PATH and $addition is a directory
maybe_add_to_path ()
{
    if ! echo $PATH | grep -q "$addition"; then
        if [ -d "$addition" ]; then
            PATH="$addition:$PATH"
        fi
    fi
}

addition="/sbin";                                 maybe_add_to_path
addition="/usr/sbin";                             maybe_add_to_path
addition="/usr/local/bin";                        maybe_add_to_path
addition="/usr/pkg/bin";                          maybe_add_to_path
addition="$HOME/local/pkg/bin";                   maybe_add_to_path
addition="$HOME/local/pkg/sbin";                  maybe_add_to_path
addition="$HOME/bin";                             maybe_add_to_path
addition="$HOME/local/bin";                       maybe_add_to_path
addition="$HOME/.cabal/bin";                      maybe_add_to_path
addition="$HOME/.local/bin";                      maybe_add_to_path
addition="/meta/s/spw/local/src/git-annex.linux"; maybe_add_to_path

unset addition
export PATH

# ---- maybe add to $MANPATH

# if [ -d "$HOME/pkg/man" ]; then
#     MANPATH="$HOME/local/pkg/man:$MANPATH"
#     export MAHPATH
# fi

# ---- package management by Nix: add to $PATH once more

# # crude heuristic to determine if it's already been added
# if ! echo $PATH | grep -q "$HOME/.nix-profile/bin"; then
#     if [ -e "/etc/profile.d/nix.sh" ]; then
#         . /etc/profile.d/nix.sh
#     fi
# fi

# ---- set language (snippet from joeyh's home-etc.git repo)

# TODO: according to <https://wiki.debian.org/Locale>, I ought not to
# be setting LC_ALL.  Instead I could set most of LC_* to en_GB.UTF-8,
# and some e.g. LC_PAPER to en_US.UTF-8.

# disabled: propellor setting it system-wide on my machines and that's
# enough

# case " $(echo $(locale -a)) " in
#     *\ en_GB.utf8\ *) LANG=en_GB.utf8 ;;
#     *\ en_GB.UTF-8\ *) LANG=en_GB.UTF-8 ;;
#     *\ C.UTF-8\ *) LANG=C.UTF-8 ;;
#     *\ C.utf8\ *) LANG=C.utf8 ;;
#     *) unset LANG ;;
# esac

# LC_ALL=$LANG
# export LC_ALL
# export LANG

# ---- further preferences

GIT_PAGER=
export GIT_PAGER
GIT_MERGE_AUTOEDIT=no
export GIT_MERGE_AUTOEDIT
GPG_KEY_ID=0F56D0553B6D411B
export GPG_KEY_ID
MAILDIR="$HOME/.fmail/"
export MAILDIR
# LD_RUN_PATH="$HOME/local/lib/"
# export LD_RUN_PATH
# LD_LIBRARY_PATH="$HOME/local/lib/"
# export LD_LIBRARY_PATH
MAIL=/mail/${LOGNAME:?}
export MAIL
BROWSER="firefox"
export BROWSER
TERMCMD="xfce4-terminal"
export TERMCMD
TERMINAL="xfce4-terminal"
export TERMINAL
DEBFULLNAME="Sean Whitton"
export DEBFULLNAME
DEBEMAIL="spwhitton@spwhitton.name"
export DEBEMAIL

# "Setting the monitor port to 0 turns the monitoring function off,
# and autossh will only restart ssh upon ssh's exit."
#
# We rely on ServerAliveInterval and ServerAliveCountMax set in ~/.ssh/config
AUTOSSH_PORT=0
export AUTOSSH_PORT

# ---- set pager

lessf=$(which less)
if [ -x "$lessf" ]; then
    PAGER=less
    export PAGER
    LESS="--ignore-case --long-prompt"
    export LESS
fi
unset lessf