# Skip all this for non-interactive shells
[[ -z "$PS1" ]] && return

#########
# zplug #
#########

export ZPLUG_HOME=~/.zplug
source $ZPLUG_HOME/init.zsh

zplug 'zplug/zplug', hook-build:'zplug --self-manage'

# Set the priority when loading
# e.g., zsh-syntax-highlighting must be loaded

# after executing compinit command and sourcing other plugins
# (If the defer tag is given 2 or above, run after compinit command)
zplug "zsh-users/zsh-syntax-highlighting", defer:2

# Manage local plugins
# zplug "~/.zsh", from:local

# Theme
# zplug "dracula/zsh", as:theme
# zplug "marszall87/nodeys-zsh-theme", as:theme
zplug "themes/frisk", as:theme, from:oh-my-zsh

# Plugins
zplug "zsh-users/zsh-autosuggestions"
zplug "zsh-users/zsh-history-substring-search"
zplug "zsh-users/zsh-completions"
zplug "laurenkt/zsh-vimto"
zplug "MichaelAquilina/zsh-autoswitch-virtualenv"
# zplug "paulmelnikow/zsh-startup-timer"
# zplug "lib/nvm", from:oh-my-zsh

# Install plugins if there are plugins that have not been installed
if ! zplug check --verbose; then
    printf "Install? [y/N]: "
    if read -q; then
        echo; zplug install
    fi
fi

# Then, source plugins and add commands to $PATH
zplug load

################
# Zsh settings #
################

# Vi mode
bindkey -v
export KEYTIMEOUT=1

# backspace and ^h working even after
# returning from command mode
bindkey '^?' backward-delete-char
bindkey '^h' backward-delete-char

# ctrl-w removed word backwards
bindkey '^w' backward-kill-word

# ctrl-r starts searching history backward
bindkey '^r' history-incremental-search-backward

# History
HISTFILE="$HOME/.zsh_history"
HISTSIZE=10000000
SAVEHIST=$HISTSIZE
setopt INC_APPEND_HISTORY
setopt HIST_IGNORE_SPACE
setopt SHARE_HISTORY
setopt HIST_IGNORE_ALL_DUPS
setopt HIST_REDUCE_BLANKS

# Other options

# Prompts for confirmation after 'rm *' etc
setopt RM_STAR_WAIT

#Background processes aren't killed on exit of shell
setopt AUTO_CONTINUE

# Don’t write over existing files with >, use >! instead
setopt NOCLOBBER

# Completion
zmodload zsh/complist
autoload -Uz compinit
compinit
zstyle :compinstall filename '${HOME}/.zshrc'

zstyle ':completion:*' menu select
setopt COMPLETE_ALIASES

zstyle :compinstall filename '${HOME}/.zshrc'

zstyle ':completion:*:pacman:*' force-list always
zstyle ':completion:*:*:pacman:*' menu yes select

zstyle ':completion:*:default' list-colors ${(s.:.)LS_COLORS}

zstyle ':completion::complete:*' gain-privileges 1

# Completion selection by menu for kill
zstyle ':completion:*:*:kill:*' menu yes select
zstyle ':completion:*:kill:*' force-list always
zstyle ':completion:*:kill:*' command 'ps -u $USER -o pid,%cpu,tty,cputime,cmd'
zstyle ':completion:*:*:kill:*:processes' list-colors '=(#b) #([0-9]#)*=0=01;31'

zstyle ':completion:*:*:killall:*' menu yes select
zstyle ':completion:*:killall:*'   force-list always

zstyle ':completion:*' use-cache on
zstyle ':completion:*' cache-path ~/.zsh/cache

# Calculator
# autoload zcalc

# Keybindings
typeset -g -A key

key[Home]="${terminfo[khome]}"
key[End]="${terminfo[kend]}"
key[Insert]="${terminfo[kich1]}"
key[Backspace]="${terminfo[kbs]}"
key[Delete]="${terminfo[kdch1]}"
key[Up]="${terminfo[kcuu1]}"
key[Down]="${terminfo[kcud1]}"
key[Left]="${terminfo[kcub1]}"
key[Right]="${terminfo[kcuf1]}"
key[PageUp]="${terminfo[kpp]}"
key[PageDown]="${terminfo[knp]}"
key[Shift-Tab]="${terminfo[kcbt]}"

# setup key accordingly
[[ -n "${key[Home]}"      ]] && bindkey -- "${key[Home]}"      beginning-of-line
[[ -n "${key[End]}"       ]] && bindkey -- "${key[End]}"       end-of-line
[[ -n "${key[Insert]}"    ]] && bindkey -- "${key[Insert]}"    overwrite-mode
[[ -n "${key[Backspace]}" ]] && bindkey -- "${key[Backspace]}" backward-delete-char
[[ -n "${key[Delete]}"    ]] && bindkey -- "${key[Delete]}"    delete-char
[[ -n "${key[Up]}"        ]] && bindkey -- "${key[Up]}"        history-substring-search-up
[[ -n "${key[Down]}"      ]] && bindkey -- "${key[Down]}"      history-substring-search-down
[[ -n "${key[Left]}"      ]] && bindkey -- "${key[Left]}"      backward-char
[[ -n "${key[Right]}"     ]] && bindkey -- "${key[Right]}"     forward-char
[[ -n "${key[PageUp]}"    ]] && bindkey -- "${key[PageUp]}"    beginning-of-buffer-or-history
[[ -n "${key[PageDown]}"  ]] && bindkey -- "${key[PageDown]}"  end-of-buffer-or-history
[[ -n "${key[Shift-Tab]}" ]] && bindkey -- "${key[Shift-Tab]}" reverse-menu-complete

# Finally, make sure the terminal is in application mode, when zle is
# active. Only then are the values from $terminfo valid.
if (( ${+terminfo[smkx]} && ${+terminfo[rmkx]} )); then
	autoload -Uz add-zle-hook-widget
	function zle_application_mode_start { echoti smkx }
	function zle_application_mode_stop { echoti rmkx }
	add-zle-hook-widget -Uz zle-line-init zle_application_mode_start
	add-zle-hook-widget -Uz zle-line-finish zle_application_mode_stop
fi

key[Control-Left]="${terminfo[kLFT5]}"
key[Control-Right]="${terminfo[kRIT5]}"

[[ -n "${key[Control-Left]}"  ]] && bindkey -- "${key[Control-Left]}"  backward-word
[[ -n "${key[Control-Right]}" ]] && bindkey -- "${key[Control-Right]}" forward-word

# emacs

function vterm_printf(){
    if [ -n "$TMUX" ]; then
        # Tell tmux to pass the escape sequences through
        # (Source: http://permalink.gmane.org/gmane.comp.terminal-emulators.tmux.user/1324)
        printf "\ePtmux;\e\e]%s\007\e\\" "$1"
    elif [ "${TERM%%-*}" = "screen" ]; then
        # GNU screen (screen, screen-256color, screen-256color-bce)
        printf "\eP\e]%s\007\e\\" "$1"
    else
        printf "\e]%s\e\\" "$1"
    fi
}

# Completely clear the buffer. With this, everything that is not on screen
# is erased.
if [[ "$INSIDE_EMACS" = 'vterm' ]]; then
    alias clear='vterm_printf "51;Evterm-clear-scrollback";tput clear'
fi

# With vterm_cmd you can execute Emacs commands directly from the shell.
# For example, vterm_cmd message "HI" will print "HI".
# To enable new commands, you have to customize Emacs's variable
# vterm-eval-cmds.
vterm_cmd() {
    local vterm_elisp
    vterm_elisp=""
    while [ $# -gt 0 ]; do
        vterm_elisp="$vterm_elisp""$(printf '"%s" ' "$(printf "%s" "$1" | sed -e 's|\\|\\\\|g' -e 's|"|\\"|g')")"
        shift
    done
    vterm_printf "51;E$vterm_elisp"
}

# This is to change the title of the buffer based on information provided by the
# shell. See, http://tldp.org/HOWTO/Xterm-Title-4.html, for the meaning of the
# various symbols.
autoload -U add-zsh-hook
add-zsh-hook -Uz chpwd (){ print -Pn "\e]2;%m:%2~\a" }

# Sync directory and host in the shell with Emacs's current directory.
# You may need to manually specify the hostname instead of $(hostname) in case
# $(hostname) does not return the correct string to connect to the server.
#
# The escape sequence "51;A" has also the role of identifying the end of the
# prompt
vterm_prompt_end() {
    vterm_printf "51;A$(whoami)@$(hostname):$(pwd)";
}
setopt PROMPT_SUBST
PROMPT=$PROMPT'%{$(vterm_prompt_end)%}'

# Load environment
[ -f "$HOME/.aliasrc" ] && source "$HOME/.envrc"

# Load aliases
[ -f "$HOME/.aliasrc" ] && source "$HOME/.aliasrc"