# Command checker helper
function check_cmd() {
    test -x "$(command -v $1)"
}

## Nushell and jc functions

# nushell: df
function nudf() {
    nu -c 'jc df | from json'
}

# nushell: free
function numem() {
    nu -c 'jc free | from json'
}

# nushell: lsof -i
function nunetcons() {
    nu -c 'jc lsof -i | from json'
}

# nushell: nutulp
function nutulp() {
    nu -c 'jc ss -tulp | from json'
}

# nushell: openports
function nuopenports() {
    nu -c 'sudo jc lsof -i | from json | find "LISTEN"'
}

# nushell: timestamp Z
function nutsz() {
    nu -c 'date now | format date "%FT%T%:z"'
}

# watch directory listing, update every 0.1s
function watchdir() {
    watch -n0,1 "ls -lh $1/ | tail"
}

# get time in timezone
function timein() {
    continent=$(find /usr/share/zoneinfo -maxdepth 1 -mindepth 1 -type d -not -name "posix" -not -name "right" -exec basename {} \; | gum choose --limit=1)
    city=$(find "/usr/share/zoneinfo/$continent" -type f -exec basename {} \; | gum choose --limit=1)
    TZ="$continent/$city" date
}

# Generate a pseudo-random 16-character string.
function genrand() {
    openssl rand -base64 16
}

# Remove ~/.ssh/known_hosts*
function rmknownhosts() {
    rm -v "${HOME}/.ssh/known_hosts"*
}

# Empty trash
function trsh() {
    if check_cmd trash-empty; then
        trash-empty -f
    fi
}

# Copy SSH public key to clipboard (requires wl-copy)
function pubkey() {
    cat "${HOME}/.ssh/id_ed25519.pub" | tr -d '\n' | wl-copy
    echo "--> SSH public key copied to clipboard"
}

# Compatibility with emacs-libvterm
function vterm_printf() {
    if [ -n "$TMUX" ] && ([ "${TERM%%-*}" = "tmux" ] || [ "${TERM%%-*}" = "screen" ]); then
        # Tell tmux to pass the escape sequences through
        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
}

# Remove all .jpeg .jpg .png .svg .webp files from downloads
function rmpics() {
    find "${HOME}/downloads" \
        -maxdepth 1 \
        -type f \
        \( -name "*.jpg" -o -name "*.jpg_original" -o -name "*.jpeg" -o -name "*.svg" -o -name "*.png" -o -name "*.webp" \) \
        -delete
}

# Remove all ISOs and disc images from downloads
function rmisos() {
    find "${HOME}/downloads" \
        -maxdepth 1 \
        -type f \
        \( -name "*.iso" -o -name "*.img" \) \
        -delete
}

# Create a bookmark.
function mark() {

    if ! test -f "${HOME}/.shellmarks"; then
        touch "${HOME}/.shellmarks"
    fi

    mark_to_add="$(pwd)"

    if grep -qxFe "${mark_to_add}" "${HOME}/.shellmarks"; then
        gum style \
            --foreground 210 \
            --margin "1 2" \
            "This bookmark already exists: ${mark_to_add}"
    else
        echo "${mark_to_add}" >> "${HOME}/.shellmarks"
        gum style \
            --foreground "#73F59F" \
            --margin "1 2" \
            "${mark_to_add} added to shellmarks file"
    fi

    cat "${HOME}/.shellmarks" | sort | tee "${HOME}/.shellmarks" >/dev/null

    return 0
}

# List bookmarks.
function lsmarks() {
    echo "# Shellmarks" | gum format

    while IFS= read -r line; do
        echo "- $line"
    done < "${HOME}/.shellmarks" | gum format
}

# Remove bookmarks.
function delmark() {
    selection=$(cat "${HOME}/.shellmarks" | gum choose --no-limit)

    if test -n "${selection}"; then
        while read -r line; do
            perl -n -i -e "print unless /^\\Q${line//\//\\/}\\E\$/" "${HOME}/.shellmarks"
        done <<< "${selection}"
    else
        return 0
    fi

    gum format -t markdown -- \
        "# The following bookmarks were deleted:" \
        "$(printf "%s\n" "${selection}")"

    return 0
}

# Goto a bookmark.
function gotomark() {
    if ! test -f "${HOME}/.shellmarks"; then
        echo "No bookmarks exist yet. Add some!"
        return 1
    fi

    echo
    builtin cd $(cat "${HOME}/.shellmarks" | gum choose --limit=1)

    local precmd
    for precmd in $precmd_functions; do
        $precmd
    done
    zle && zle reset-prompt
}
zle -N gotomark
bindkey '^[g' gotomark

# Choose a directory from the directory stack.
function dstack() {
    echo "# Choose a directory" | gum format -t markdown
    selection=$(dirs -lp | gum choose --limit=1)
    cd $selection
}

# Print timestamp as %Y-%m-%d %H:%M:%S.
function tstamp() {
    emulate -L zsh
    date '+%Y-%m-%d %H:%M:%S' | tr -d '\n'
}

# Print timestamp as %Y-%m-%dT%H:%M:%S%:z
function tstampz() {
    emulate -L zsh
    date '+%Y-%m-%dT%H:%M:%S%:z' | tr -d '\n'
}

# Create a /overview/ of all available function()'s; the description for
# each funtion() *must* be the first line above the string `function'!
# Otherwise it wont work.
# Display all function()'s with their descriptions.
function funlist() {
    grep -B 1 "^function" $HOME/.zshrc.d/functions.zsh | \
    grep -v "^\-\-$" | \
    awk '{ if(/^#/) { gsub(/^#[:space:]*/, ""); ht=$0 }; getline; gsub(/ ?\(\)/, ":"); printf("-> %-20s %s\n", $2, ht); }' | \
    sort -u -k 3
}

# zrmcomp() remove *.zwc files.
function zrmcomp() {
    local i
    for i in ${HOME}/*.zwc(N); do
        printf "Removing $i\n"
        command rm -f $i
    done
}

# Invoke this every time you change .zshrc to recompile it.
function src() {
    autoload -U zrecompile
    [ -f ~/.zshrc ] && zrecompile -p ~/.zshrc
    [ -f ~/.zcompdump ] && zrecompile -p ~/.zcompdump
    [ -f ~/.zcompdump ] && zrecompile -p ~/.zcompdump
    [ -f ~/.zshrc.zwc.old ] && command rm -f ~/.zshrc.zwc.old
    [ -f ~/.zcompdump.zwc.old ] && command rm -f ~/.zcompdump.zwc.old
    source ~/.zshrc
}

# Do an ls after cd.
function cd() { builtin cd "$@" && ls; }

# Create new directory and enter it.
function mkd() { mkdir -p "$@" && cd "$_"; }

# Display pids of commands.
function pids() { pgrep -a "$@"; }

# Restart zsh.
function restart() { exec $SHELL $SHELL_ARGS "$@"; }

# cd to ~, clear screen, and restart zsh.
function rsrc() { cd && clear && restart; }

# Set hostname:pwd for vterm buffer title
autoload -U add-zsh-hook
add-zsh-hook -Uz chpwd() { print -Pn "\e]2;%m:%2~\a" }

# For directory tracking and prompt tracking in Emacs Vterm
function vterm_prompt_end() {
    vterm_printf "51;A$(whoami)@$(hostname):$(pwd)"
}
setopt PROMPT_SUBST
PROMPT=$PROMPT'%{$(vterm_prompt_end)%}'

# To read and execute Emacs commands in Vterm
function 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"
}

# find-file in Emacs
function find_file() {
    vterm_cmd find-file "$(realpath "${@:-.}")"
}