#!/bin/sh

# Aliases used in all kinds of shells




forget() {  # the current history and restore $HISTFILE from disk
    if [ -n "$BASH_VERSION" ]; then
        history -c
        history -r
    elif [ -n "$ZSH_VERSION" ]; then
        _histsize=$HISTSIZE
        HISTSIZE=0  # because shrinking the list to 0 discards all entries
        HISTSIZE=$_histsize
        unset _histsize
        fc -R "$HISTFILE"
    fi
}

if [ -n "$ZSH_VERSION" ]; then
    alias forget=' forget'  # Leading space => The invocation itself is forgotten because of `setopt HIST_IGNORE_SPACE`
fi



alias path='echo $PATH | tr ":" "\n"'


# Easier `cd` movements
alias ..='cd ..'
alias ...='cd ../..'
alias ....='cd ../../..'
alias .....='cd ../../../..'


# Use human-readable sizes
alias df='df --human-readable'
alias du='du --human-readable'
alias free='free --human'


# Make the terminal more colorful

alias diff='diff --color=auto'
alias grep='grep --color=auto --exclude-dir=.git'
alias ip='ip -color=auto'

if _command_exists dircolors; then

    # Compute `$LS_COLORS` only once because this file is also sourced
    # by every non-interactive `bash` via `$BASH_ENV` (e.g., ":!cmd" in `vi`)
    if [ -z "${LS_COLORS:-}" ]; then
        if [ -r "$XDG_CONFIG_HOME/dircolors" ]; then
            eval "$(dircolors -b "$XDG_CONFIG_HOME/dircolors")"
        else
            eval "$(dircolors -b)"
        fi
    fi

    alias ls='ls --color=auto'

fi


# Add common `ls` utilities
alias l='ls --classify --format=vertical'
alias la='ls --classify --format=vertical --almost-all'
alias lal='ls --classify --format=long --almost-all'
alias ll='ls --classify --format=long'
alias lla='lal'



if _command_exists git; then

    # Manage the bare `git` repository in ~/ holding the dotfiles
    alias dotfiles='git --git-dir=$DOTFILES_DIR --work-tree=$HOME'

    alias g='git'

    # Create "g" prefixed aliases from the "real" aliases
    # defined under "[alias]" in ~/.config/git/config,
    # for example, `gap` for `git add --patch`
    #
    # Interactive shells only: This spawns a `git` process,
    # which every non-interactive `bash` via `$BASH_ENV`
    # (e.g., ":!cmd" in `vi`) would pay on each command
    # => There, `g ap` works just as well as `gap`
    case $- in
        *i*)
            for al in $(git aliases --real); do
                eval "alias g$al='git $al'"
            done
            unset al
            ;;
    esac

fi



alias py='python3'

ipy() {
    if _command_exists ipython; then
        ipython "$@"
    elif _command_exists ipython3; then
        ipython3 "$@"
    else
        echo "ipython is not installed" >&2
        return 1
    fi
}

_command_exists poetry && alias pr='poetry run'

if _command_exists pyenv; then

    alias pyvenvs='pyenv virtualenvs --bare --skip-aliases'
    alias pyver='pyenv version'
    alias pyvers='pyenv versions --skip-aliases'
    alias pywhich='pyenv which'

fi