zsh-config/init.zsh

# Main zsh config file

# Enable completions
autoload -U compinit && compinit

# Some utility stuff
ZSH_PLUGIN_DIR="${ZSH_CONFIG_DIR}/plugins"
# load_plugin <name>
function load_plugin {
    source "${ZSH_PLUGIN_DIR}/${1}/${1}.plugin.zsh"
}
# cmd_exists <name>
function cmd_exists {
    hash "${1}" >/dev/null 2>&1
}

# User configuration file
[[ -v ZSH_USER_DIR ]] || ZSH_USER_DIR="${HOME}/.zsh.d"
# source_user_file <name>
function source_user_file {
    local machine_specific="${ZSH_CONFIG_DIR}/local/${1}.${HOST}.zsh"
    local default="${ZSH_CONFIG_DIR}/local/${1}.zsh"
    if [ -e "${machine_specific}" ]; then
        source "${machine_specific}"
    elif [ -e "${default}" ]; then
        source "${default}"
    fi
}

# Load user early init file
source_user_file "early-init"

# Some options
setopt autocd extendedglob rm_star_silent completealiases
unsetopt beep notify

# Some general, random configuration
# History stuff
[ -v HISTFILE ] || HISTFILE="${HOME}/.cache/zsh/history"
[ ! -d "$(dirname "${HISTFILE}")" ] && mkdir -p "$(dirname "${HISTFILE}")"
HISTSIZE=1000
SAVEHIST=10000

# Tools for graphical sessions
export BROWSER=mullvad-browser
export READER=zathura
alias clip="xclip -selection clipboard"

# I mess this up a lot
alias cd..="cd .."

# Make xargs, sudo, etc. understand aliases
alias xargs='xargs '
cmd_exists sudo && alias sudo='sudo '
cmd_exists doas && alias doas='doas '

# Emacs and Neovim stuff
if [[ -v NVIM ]]; then
    export EDITOR=nvr
    alias n=nvr
    alias nvim=nvr
    alias e=nvr
elif [[ -v INSIDE_EMACS ]]; then
    export EDITOR='emacsclient'
    alias e='emacsclient '
    alias n='emacsclient '
else
    export EDITOR='emacsclient -nw'
    alias n=nvim
    alias e='emacsclient -nw '
fi
export VISUAL="${EDITOR}"
alias se=sudoedit

# Safer file functions
local rm_confirm_flag='-i'
uname | grep -i linux >/dev/null && rm_confirm_flag='-I'
alias rm="rm ${rm_confirm_flag}"
alias cp="cp -i"
alias mv="mv -i"

# Enable mouse support in less
export LESS="--mouse"

# Bat configuration
if cmd_exists bat; then
    # Pager
    export PAGER="bat --paging=always"

    # Less syntax highlighting in interactive shells
    alias less="bat --paging=always"

    # Use bat instead of cat
    alias cat="bat --paging=never"
    alias pcat="bat -pp"
    alias ncat="bat -pp --color=never"

    # Bat as man pager
    export MANPAGER="zsh -c 'col -bx | bat -l man -p --paging=always'"
    export MANROFFOPT="-c"
fi

# Eza configuration
if cmd_exists eza; then
    alias ls="eza --git -F"
    alias la="ls -a"
    alias l="ls -l"
    alias ll="ls -al"
fi

# Delta configuration
if cmd_exists delta; then
    export DELTA_FEATURES='unobtrusive-line-numbers decorations side-by-side'
    export DELTA_PAGER='bat -p'
    export GIT_PAGER='delta'
fi

# Git aliases
alias ga="git add"
alias gaa="git add -A"
alias gco="git commit"
gcm() {
    local args="${@}"
    git commit -m "${args}"
}
alias gca="git commit -a"
gcam() {
    local args="${@}"
    git commit -am "${args}"
}
alias gp="git push"
alias gu="git pull"
alias gf="git fetch"
alias gt="git status"

# Sudo last line with <Esc><Esc>
sudo-command-line() {
    [[ -z $BUFFER ]] && zle up-history
    if [[ $BUFFER == sudo\ * ]]; then
        LBUFFER="${LBUFFER#sudo }"
    elif [[ $BUFFER == $EDITOR\ * ]]; then
        LBUFFER="${LBUFFER#$EDITOR }"
        LBUFFER="sudoedit $LBUFFER"
    elif [[ $BUFFER == sudoedit\ * ]]; then
        LBUFFER="${LBUFFER#sudoedit }"
        LBUFFER="$EDITOR $LBUFFER"
    else
        LBUFFER="sudo $LBUFFER"
    fi
}
zle -N sudo-command-line
bindkey -M vicmd "^f" sudo-command-line
bindkey -M viins "^f" sudo-command-line

# Autosuggestions
load_plugin zsh-autosuggestions
ZSH_AUTOSUGGEST_STRATEGY=(history completion)
bindkey '^ ' autosuggest-accept

# Use vi mode
bindkey -v
# Fast switch of modes
KEYTIMEOUT=1
# Implement a replace mode
bindkey -N virep viins
bindkey -M vicmd "R" overwrite-mode
function overwrite-mode {
  zle -K virep
  zle .overwrite-mode
}
zle -N overwrite-mode

# Fancy prompt (starship)
eval "$(starship init zsh)"
# Change cursor shape for different vi modes.
function __zsh_vim_key_prompt_handler {
    SPACESHIP_CHAR_SYMBOL="❮"
    local _shape=0
    case "${KEYMAP}" in
        main)    _shape=6 ;; # vi insert: line
        viins)   _shape=6 ;; # vi insert: line
        isearch) _shape=6 ;; # inc search: line
        virep)   _shape=4 ;; # vi replace: underscore
        command) _shape=4 ;; # read a command: underscore
        vicmd)   _shape=2 ;; # vi cmd: block
        visual)  _shape=2 ;; # vi visual mode: block
        viopp)   _shape=1 ;; # vi operation pending: blinking block
        *)       _shape=0 ;;
    esac

    zle reset-prompt
    printf '\e[%d q' "${_shape}"
}
function zle-keymap-select {
    __zsh_vim_key_prompt_handler
}
function zle-line-init {
    printf '\e[6 q'
}
zle -N zle-keymap-select
zle -N zle-line-init

# Clear scrollback on ^l
__zsh_clear_screen_and_scrollback() {
    echoti civis >"$TTY"
    printf '%b' '\e[H\e[2J' >"$TTY"
    printf '%b' '\e[3J' >"$TTY"
    echoti cnorm >"$TTY"
    zle .reset-prompt
    zle -R
}
zle -N __zsh_clear_screen_and_scrollback
bindkey '^L' __zsh_clear_screen_and_scrollback

# Direnv
if cmd_exists direnv;  then
    eval "$(direnv hook zsh)"
fi

# Bookmarks
[ -v ZSH_BOOKMARK_DIR ] || ZSH_BOOKMARK_DIR="${HOME}/.cache/zsh/bookmarks"
[ -v ZSH_BOOKMARK_LS ] || ZSH_BOOKMARK_LS=true
source "${ZSH_CONFIG_DIR}/bookmark.zsh"

# Platform specific stuff
[ -f /usr/bin/pacman ] && source "${ZSH_CONFIG_DIR}/arch.zsh"

# FZF Integration
load_plugin fzf-tab
# Disable sort when completing `git checkout`
zstyle ':completion:*:git-checkout:*' sort false
# Set descriptions format to enable group support
zstyle ':completion:*:descriptions' format '[%d]'
# Set list-colors to enable filename colorizing
zstyle ':completion:*' list-colors ${(s.:.)LS_COLORS}
# Preview directory's content with eza when completing cd
zstyle ':fzf-tab:complete:cd:*' fzf-preview 'eza -1 --color=always $realpath'
# Remove the '.' prefix at the start of every completion
zstyle ':fzf-tab:*' prefix ''
# Switch groups
zstyle ':fzf-tab:*' switch-group 'ctrl-h' 'ctrl-l'
# Toggle selected for all visible entries
zstyle ':fzf-tab:*' fzf-bindings 'ctrl-a:toggle-all'

# Load user init file
source_user_file 'init'

# THE FOLLOWING PLUGINS MUST COME LAST

# More completions
load_plugin zsh-completions

# Syntax highlighting
load_plugin zsh-syntax-highlighting

# History substring search
load_plugin zsh-history-substring-search
bindkey '^[[A' history-substring-search-up
bindkey '^[[B' history-substring-search-down
#bindkey '^k' history-substring-search-up
#bindkey '^j' history-substring-search-down
#bindkey -M vicmd '^k' history-substring-search-up
#bindkey -M vicmd '^j' history-substring-search-down
bindkey -M vicmd 'k' history-substring-search-up
bindkey -M vicmd 'j' history-substring-search-down
bindkey -M emacs '^P' history-substring-search-up
bindkey -M emacs '^N' history-substring-search-down

# Only match at the beginning of the line
HISTORY_SUBSTRING_SEARCH_PREFIXED="true"
HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND=""
setopt histignoredups

# Clean up internal functions
unfunction load_plugin
unfunction cmd_exists
unfunction source_user_file

# Run fortune and cowsay if we are not in nvim
[[ -v NVIM ]] || fortune | cowsay -felephant-in-snake -n