# -*- mode: sh; -*-
# vim: set ts=8 sw=4 tw=0 fenc=utf-8 ft=sh:
#
# ~/.profile
# Executed by the login shell
#
# Aaron LI
#

# Set file creation mask: be more private!
umask 027


### Functions ----------------------------------------------------------

## PATH manipulations
## Credit: http://unix.stackexchange.com/a/178822
# Remove the specified part from PATH
_path_remove() {
    PATH=$(echo ":${PATH}:" | sed -e "s|:$1:|:|g" -e "s|^:\(.*\):$|\1|")
}
# Prepend the supplied part to PATH
_path_prepend() {
    _path_remove "$1"
    PATH="$1:${PATH}"
}
# Append the supplied part to PATH
_path_append() {
    _path_remove "$1"
    PATH="${PATH}:$1"
}

## Check the existence/accessibility of a command
# Credit: https://stackoverflow.com/a/677212/4856091
_exists() {
    command -v "$1" >/dev/null 2>&1
}

## Check whether the program is running
_running() {
    pgrep -x -u "${USER}" $1 &> /dev/null
}


### Environment Settings -----------------------------------------------

## PATH
# Locally installed NPM packages (see also `~/.npmrc`)
if [ -d "${HOME}/.npm-packages/bin" ]; then
    _path_prepend "${HOME}/.npm-packages/bin"
fi
# Locally installed programs (e.g., Python)
if [ -d "${HOME}/.local/bin" ]; then
    _path_prepend "${HOME}/.local/bin"
fi
# ~/bin
if [ -d "${HOME}/bin" ]; then
    _path_prepend "${HOME}/bin"
fi
# System administration programs
if groups | grep -qE '\b(wheel|adm|sudo)\b'; then
    _path_append "/usr/local/sbin"
    _path_append "/usr/sbin"
    _path_append "/sbin"
fi

## Language and locale
export LANG="en_US.UTF-8"
export LC_COLLATE="C"

## Chinese input method
export INPUT_METHOD="fcitx"
export XMODIFIERS="@im=${INPUT_METHOD}"
export GTK_IM_MODULE="${INPUT_METHOD}"
export QT_IM_MODULE="${INPUT_METHOD}"

## Xapian
# Enable the CJK N-gram tokenization algorithm for CJK indexing and search
export XAPIAN_CJK_NGRAM=1

export EDITOR="vim"
export VISUAL="${EDITOR}"
export PAGER="less"
export LESS="--ignore-case --raw-control-chars"

## LS colors
if _exists dircolors; then
    eval $(dircolors -b)
fi

## gpg-agent: start it if not running
if ! _running gpg-agent; then
    gpg-connect-agent /bye &> /dev/null
fi

## Set SSH to use 'gpg-agent'
unset SSH_AGENT_PID
if [ "${gnupg_SSH_AUTH_SOCK_by:-0}" -ne $$ ]; then
    export SSH_AUTH_SOCK="/run/user/${UID}/gnupg/S.gpg-agent.ssh"
fi