#This program is free software: you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation, either version 3 of the License, or
#(at your option) any later version.
#
#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.
#
#You should have received a copy of the GNU General Public License
#along with this program.  If not, see <http://www.gnu.org/licenses/>.


#set important shell variables
    #set default editor and pager.
    export EDITOR=nvim
    export VISUAL=nvim
    export PAGER=less
    #default options for less
    export LESS="-R"
    export LESSHISTFILE="/dev/null"
    #set the w3m homepage
    export WWW_HOME="duckduckgo.com/lite/"
    #set ssh-agent to play nice with systemd.
    export SSH_AUTH_SOCK="$XDG_RUNTIME_DIR/ssh-agent.socket"
    export TIMEFMT="%J  %*U user %*S system %P cpu %*E total"
    export PIPENV_VENV_IN_PROJECT=true
    export POETRY_VIRTUALENVS_IN_PROJECT=true
    #turns out its ok to have nonexistent paths in $PATH
    export PATH="$PATH:$HOME/.local/bin/"
    export PATH="$PATH:/opt"
    export PATH="$PATH:$HOME/.cargo/bin"

#prompt
setprompt() {
    autoload -U promptinit
    promptinit
    autoload -U colors
    colors

    #stuff to show git things.
        autoload -Uz vcs_info

        setopt prompt_subst

        precmd_vcs() {vcs_info}

        #when not in a repo, show full path to current directory. when in one, show path from base direcory of the repo.
        zstyle ':vcs_info:*' nvcsformats '%~'
        zstyle ':vcs_info:*' formats '%r/%S %F{green}[%b]%f'
        zstyle ':vcs_info:*' actionformats '%r/%S %F{green}[%b] %F{red}<%a>%f'

    #the precmd function, called just before printing the prompt. 
    function precmd() {
        precmd_vcs
    }

    #Make the right prompt blank, just to be sure.
    RPROMPT=''

    #on the top line, show a whole bunch of info. botton line should be as minimal as possilbe (just a single char to  input next to...)
    PROMPT=$'%F{cyan}[%n@%m]%f%F{red}├────┤%f${vcs_info_msg_0_} %F{white}[%D %T]%f\n»'
}
#starship if its installed, otherwise the prompt we just defined.
    command -v starship &> /dev/null && eval "$(starship init zsh)" || setprompt

#show dots while waiting for tab-completion
    expand-or-complete-with-dots() {
        # toggle line-wrapping off and back on again
        [[ -n "$terminfo[rmam]" && -n "$terminfo[smam]" ]] && echoti rmam
        print -Pn "%{%F{red}......%f%}"
        [[ -n "$terminfo[rmam]" && -n "$terminfo[smam]" ]] && echoti smam

        zle expand-or-complete
        zle redisplay
    }
    zle -N expand-or-complete-with-dots
    bindkey "^I" expand-or-complete-with-dots

# editing stuff
    # Enable the ZLE line editor, which is default behavior, but to be sure
    setopt ZLE
    #Enable vi mode for the ZLE. it should be set by default due to our EDITOR and VISUAL, but this is just to be safe.
    bindkey -v
    #allow backspacing beyond the point you entered insert mode:
    bindkey -v '^?' backward-delete-char
    bindkey "^W" backward-kill-word 

#misc
    # Sends cd commands without the need for 'cd'
    setopt AUTO_CD
    # Kill all child processes when we exit, dont leave them running
    unsetopt NO_HUP
    #Allows comments in interactive shell.
    setopt INTERACTIVE_COMMENTS
    # Ctrl+S and Ctrl+Q usually disable/enable tty input. This disables those inputs
    unsetopt FLOW_CONTROL
    mkdir -p ~/.cache/zsh
    local zshCache=~/.cache/zsh

#ZSH history
    #make a history file outside our home directory
    HISTFILE=$zshCache/history
    #save a lot of history
    SAVEHIST=1000
    HISTSIZE=1000
    #save more information in history
    setopt EXTENDED_HISTORY
    #share history among zsh sessions
    setopt APPEND_HISTORY
    setopt SHARE_HISTORY
    #skip dupes when going through history
    setopt HIST_FIND_NO_DUPS
    #delete dupes first when histsize becomes full
    setopt HIST_EXPIRE_DUPS_FIRST
    #dont write dupes of the last command to histfile
    setopt HIST_IGNORE_DUPS
    #write history file as we type
    setopt INC_APPEND_HISTORY
    #remove extra whitespace from history
    setopt HIST_REDUCE_BLANKS

#autocomplete
    autoload -Uz compinit
    compinit
    #have the menu highlight while we cycle through options
    zstyle ':completion:*' menu select
    #case insensitive completion
    zstyle ':completion:*' matcher-list 'm:{a-z}={A-Z}'
    #allow completion from midword
    setopt COMPLETE_IN_WORD
    #move cursor to end of word after completing
    setopt ALWAYS_TO_END
    #complete aliases as well
    setopt COMPLETE_ALIASES
    #select first item when you press tab the first time.
    setopt MENU_COMPLETE

#globbing
    #case insensitive globbing
    setopt NO_CASE_GLOB
    #sort globs that expand to numbers by number rather than alphabeticly
    setopt NUMERIC_GLOB_SORT
    #allows for some neat globbing.
    setopt EXTENDED_GLOB

#aliases
    alias vim="nvim"
    alias vimdiff="nvim -d"
    alias please='sudo $(fc -ln -1)'
    alias la='ls -la'
    alias ll='ls -l'
    alias say='espeak -p 10 -s 150 -a 200 2> /dev/null'
    alias tmux='tmux -u'
    alias pdfmk='latexmk -lualatex -pvc'
    # needs to have a number immediately after it.
    alias slideshow='feh --full-screen --randomize --auto-zoom --recursive --slideshow-delay'
    # converts all .doc and .docx files in the local directory to pdfs using libreoffice
    alias doc2pdf='loffice --convert-to pdf --headless *.docx'
    #common options for sshfs
    alias sshmnt='sshfs -o idmap=user,compression=no,reconnect,follow_symlinks,dir_cache=yes,ServerAliveInterval=15'
    alias pyactivate='source ./.venv/bin/activate'
    tre() { command tre "$@" -e && source "/tmp/tre_aliases_$USER" 2>/dev/null; }

#setup grep to be a bit more nice
    local GREP_OPTIONS=""
    # color grep results
    GREP_OPTIONS+=" --color=auto"
    # ignore VCS folders (if the necessary grep flags are available)
    local VCS_FOLDERS="{.bzr,CVS,.git,.hg,.svn}"
    GREP_OPTIONS+=" --exclude-dir=$VCS_FOLDERS"
    GREP_OPTIONS+=" --exclude=$VCS_FOLDERS"
    # export grep settings
    alias grep="grep $GREP_OPTIONS"

#fzf stuff
    testPath="/usr/share/fzf/key-bindings.zsh"
    [ -f "$testPath" ] && source $testPath
    testPath="/usr/share/fzf/completion.zsh"
    [ -f "$testPath" ] && source $testPath
    #if it was installed using git, can just source the one file:
    testPath="$HOME/.fzf.zsh"
    [ -f "$testPath" ] && source $testPath

#zoxide stuff
    command -v zoxide &> /dev/null && eval "$(zoxide init zsh)"

#check for existence of pyenv before setting it up.
    if command -v pyenv &> /dev/null; then
        export PYENV_ROOT="$HOME/.pyenv"
        [[ -d $PYENV_ROOT/bin ]] && export PATH="$PYENV_ROOT/bin:$PATH"
        eval "$(pyenv init -)"
    fi

#fancy way of testing if a command exists
command -v ruby &>/dev/null && export PATH="$PATH:$(ruby -e 'puts Gem.user_dir' 2> /dev/null)/bin/"