# Test for an interactive shell. There is no need to set anything
# past this point for scp and rcp, and it's important to refrain from
# outputting anything in those cases.
if [[ $- != *i* ]] ; then
    # Shell is non-interactive. That's all, folks!
    return
fi

# {{{1 EXPORTS

# XDG Base Directories
export XDG_CONFIG_HOME="$HOME/.config"
export XDG_DATA_HOME="$HOME/.local/share"
export XDG_CACHE_HOME="$HOME/.cache"

# Creates a user temporary directory.
mkdir -p /tmp/$USER
export TMPDIR=/tmp/$USER

# Home subdirectories
export GIT=$HOME/git
export BIN=$HOME/.local/bin
export MAIL=$HOME/mail
export IMGS=$HOME/imgs
export MUSIC=$HOME/music
export DOWNLOADS=$HOME/downloads
export OMNIA=$HOME/omnia
export DOCUMENTS=$HOME/documents
export NOTES=$DOCUMENTS/notes

# Rust env variables
export CARGO_HOME="$XDG_DATA_HOME"/cargo
export RUSTUP_HOME="$XDG_DATA_HOME"/rustup
if which rustc >/dev/null 2>&1 ; then
    export RUST_SRC_PATH=$(rustc --print sysroot)/lib/rustlib/src/rust/library/
fi
# Local path definitions
export PATH=$BIN:$CARGO_HOME/bin:$HOME/.local/npm/bin:$PATH
export NODE_PATH=$NODE_PATH:$HOME/.local/npm/lib/node_modules

# Set default programs
export TERMINAL=`which st`
export EDITOR=`which nvim`
export PAGER=`which less`
export BROWSER=`which firefox-bin`
export MAILCAPS=$XDG_CONFIG_HOME/mailcap/mailcap

# Instruct less to use this control sequence every time it needs to
# display bold text. For example, this alters headers and keywords in
# man pages
export LESS_TERMCAP_md="${yellow}"

# Use System fonts for Java applications (added to fix Protegé font
# problems)
export _JAVA_OPTIONS="-Dawt.useSystemAAFontSettings=on"

# History size for the in-memory list
export HISTSIZE='1024';
# History size for the $HISTFILE
export HISTFILESIZE=$HISTSIZE;
# Omit duplicates and commands that begin with a whitespace from history
export HISTCONTROL='ignoreboth';

# Make (relative) path relative to the cwd or the user's home (in this
# order, in case of collisions) when using `cd`
export CDPATH=".:$HOME:$GIT"

# SSH connection
if [ -n "$SSH_CLIENT" ] || [ -n "$SSH_TTY" ]; then
    export SSH_SESSION=1
fi

# FZF related config options
export FZF_DEFAULT_COMMAND='rg --files --hidden --smart-case'

# {{{1 ALIASES

# Folder shortcuts
alias dl="cd ~/downloads;clear"
alias tmp='cd `mktemp -d`'

# List all files colorized in long format
alias ls="command ls -lF --color"
# Same as `ls', but including hidden files
alias la="command ls -laF --color"
# Same as `ls', but clears the terminal screen first
alias cls="clear;ls"
# Same as `la', but clears the terminal screen first
alias cla="clear;la"

# Git-specific aliases
alias gc="git checkout"
alias gs="git status"
alias glo="git log --color --decorate --oneline --graph"

# Print each PATH entry on a separate line
alias path='echo -e ${PATH//:/\\n}'

# Other
alias z="zathura"
alias mpa="mpv --no-video"
which rc-service >/dev/null 2>&1 && \
    alias wifi="sudo rc-service wpa_supplicant"

# {{{1 FUNCTIONS

# Determine size of a file or total size of the current directory if no
# argument is given
filesize() {
	if du -b /dev/null > /dev/null 2>&1; then
		local arg=-sbh;
	else
		local arg=-sh;
	fi
	if [[ -n "$@" ]]; then
		du $arg -- "$@";
	else
		du $arg .[^.]* ./*;
	fi;
}

# This is a better version of `tree` with hidden files and color
# enabled, ignoring the `.git` directory, listing directories first. The
# output gets piped into `less` with options to preserve color and line
# numbers, unless the output is small enough for one screen.
tree() {
	command tree -aC -I '.git' --dirsfirst "$@" | less -FRNX;
}

# Prints out a weather chart (automatically detects location if none
# is passed).
weather() {
    curl wttr.in/$1;
}

# {{{1 PROMPT

# This is a variant of the bash prompt by Mathias Bynens at
# https://github.com/mathiasbynens/dotfiles

## Gruvbox colors (dark version)
## https://github.com/morhetz/gruvbox
black=$(tput setaf 0)
red=$(tput setaf 9);
green=$(tput setaf 10);
yellow=$(tput setaf 11);
blue=$(tput setaf 12);
magenta=$(tput setaf 13);
cyan=$(tput setaf 14);
orange=$(tput setaf 166)
white=$(tput setaf 15)
grey=$(tput setaf 8)
bold=$(tput bold);
reset=$(tput sgr0);

## Builds a Git prompt of the from:
## ... on <git_branch> [●●●]↑
## where the three dots indicate the presence of untracked, unstaged
## and uncommitted files. A little arrow notifies fi something needs
## to be pushed upstream.
git_prompt() {
    local state="";
    local symbol=">";
    local branch="${bold}${magenta}";

    # Check if the current directory is in a Git repository.
    if [ $(git rev-parse --is-inside-work-tree &>/dev/null; echo "${?}") == '0' ]; then

        # check if the current directory is in .git before running git checks
        if [ "$(git rev-parse --is-inside-git-dir 2> /dev/null)" == 'false' ]; then

            # Ensure the index is up to date.
            git update-index --really-refresh -q &>/dev/null;

            state+="${white}["

            # Check for untracked files.
            if [ -n "$(git ls-files --others --exclude-standard)" ]; then  
                state+="${red}";
            else 
                state+="${grey}";
            fi;
            state+="$symbol"

            # Check for unstashed files.
            if ! $(git diff-files --quiet --ignore-submodules --) ; then
                state+="${yellow}";
            else 
                state+="${grey}";
            fi;
            state+="$symbol"

            # Check for uncommitted changes in the index.
            if ! $(git diff --quiet --ignore-submodules --cached); then
                state+="${green}";
            else
                state+="${grey}"
            fi;
            state+="$symbol"

            state+="${white}]"

            # Check if tracked remote is up-to-date with the local
            # branch.
            #
            # NB: Output is redirected to /dev/null because calling `git
            # cherry` if no remote is set generates annoying messages
            # every time the prompt is refreshed.
            if [ -n "$(git cherry 2>/dev/null)" ]; then
                state+="${blue}↑"
            fi;
        fi;

        # Get the short symbolic ref. If HEAD is not a symbolic ref, get
        # the short SHA for the latest commit.
        branch+="$(git symbolic-ref --quiet --short HEAD 2> /dev/null || \
            git rev-parse --short HEAD 2> /dev/null || \
            echo '(unknown)')";

        echo -e " on ${branch} ${state}${reset}";
    else
        return;
    fi;
}

job_count() {
    if [ -n "$(jobs -p)" ]; then
        echo -e " ($(jobs -p | wc -l))"
    fi
}

## Prompt definition
PS1=""
## Username
PS1+="\[${bold}\]\[${green}\]\u\[${reset}\]" 
PS1+=" at "
## Hostname
PS1+="\[${bold}\]\[${yellow}\]\h\[${reset}\]"
PS1+=" in "
## Current working directory
PS1+="\[${bold}\]\[${blue}\]\w\[${reset}\]"
## Git prompt
PS1+="\[\$(git_prompt)\]"
PS1+="\n"
## Lambda prompt
PS1+="\[${bold}\]>\[${reset}\]"

PS1+="\$(job_count) "
export PS1;

# {{{1 MISC

## Other options

# Change cursor shape
# 0 -> blinking block.
# 1 -> blinking block (default).
# 2 -> steady block.
# 3 -> blinking underline.
# 4 -> steady underline.
# 5 -> blinking bar (xterm).
# 6 -> steady bar (xterm).
echo -ne "\e[6 q"

# Vi mode for bash
set -o vi;

# Disable flow control (CTRL-S and CTRL-Q)
stty -ixon

# Automatically prepend 'cd' to directory used as command names
shopt -s autocd;

# Autocorrect typos in path names when using `cd` or pathnames
shopt -s cdspell dirspell;

# Check window size after each command and reset LINES and COLUMNS
shopt -s checkwinsize;

# Bash tries to save multiline commands as a single entry in the history
shopt -s cmdhist lithist;

# Dotfiles are included in the results of pathname expantion
shopt -s dotglob;

# '**' can be used to expand directory paths/files
shopt -s globstar;

# Enable extended glob obtions like `!(...)` or `+(...)`
# For more info check `man bash` in the Pathname Expansion section.
shopt -s extglob

# Append to the history file, rather than overwriting it
shopt -s histappend;

# Does not try to perform autocompletion on an empty line
shopt -s no_empty_cmd_completion;

# Case-insensitive globbing (used in pathname expansion)
shopt -s nocaseglob;

# Network printers
export mono3dup=Ricoh_Aficio_MP_5001_in_horizontal_duplex_mode_cups_cs_ox_ac_

# {{{1 ADDITIONAL FILES

for file in $HOME/.bash/*.bash; do
    [ -r "$file" ] && [ -f "$file" ] && source "$file";
done;
unset file;