#!/usr/bin/sh
# @author nate zhou
# @since 2025,2026
# file opener ported from my [lf](../../.config/lf/rifle)
set -x

f="$1"
term="footclient"

print_err() {
    local RED='\033[0;31m'
    local RESET='\033[0m'
    printf ${RED}"${1}"${RESET}\\n >&2
}

open_img() {
    if [ "$XDG_SESSION_TYPE" = "wayland" ]; then
        swayimg "$f"
    elif [ -n "$XAUTHORITY" ]; then
        nsxiv "$f"
    else
        mpv --loop "$f"
    fi
}


[ -z "$1" ] && print_err "No f specified." && exit 1
case $(file --mime-type -Lb "$f") in
    image/x-xcf)
        gimp "$f"
        ;;
    image/*|font/ttf)
        open_img
        ;;
    video/*)
        mpv --loop "$f"
        ;;
    audio/*)
        [ "$XDG_SESSION_TYPE" != "tty" ] \
            && "$term" mpv --loop "$f" \
            || mpv --loop "$f"
        ;;
    */pdf|*/epub*)
        if [ "$XDG_SESSION_TYPE" != "tty" ]; then
            zathura "$f"
        else
            epr "$f"
        fi
        ;;
	application/*opendocument*|*officedocument*)
        libreoffice "$f"
        ;;
    application/octet-stream)
        case "$f" in
            *.gpg)
                ${HOME}/.local/bin/gpg-rifle "$f"
                ;;
            *.mp3)
                [ "$XDG_SESSION_TYPE" != "tty" ] \
                    && "$term" mpv --loop --audio-display=no "$f" \
                    || mpv --loop --audio-display=no "$f"
                ;;
            *)
                $EDITOR "$f"
                ;;
        esac
        ;;
    message/rfc822)
        [ "$XDG_SESSION_TYPE" != "tty" ] \
            && "$term" mutt -f "$(realpath $f | rev | cut -d'/' -f3- | rev)" \
            || mutt -f "$(realpath $f | rev | cut -d'/' -f3- | rev)"
        ;;
    text/troff)
        man -l "$f"
        ;;
    text/html)
        case "$f" in
            *.svg)
                open_img
                ;;
            *.md)
                $EDITOR "$f"
                ;;
            *)
                [ "$XDG_SESSION_TYPE" != "tty" ] && $BROWSER "$f" \
                    || w3m "$f"
                ;;
        esac
        ;;
    text/*|*/json|inode/x-empty|application/javascript|application/mbox|application/pgp-signature|application/pgp-keys|application/x-wine-extension-ini|application/postscript)
        case "$f" in
            *.svg)
                open_img
                ;;
            *)
                $EDITOR "$f"
                ;;
        esac
        ;;
    application/*)
        case "$f" in
            *.epub) # some epub's mime type is application/zip
                if [ "$XDG_SESSION_TYPE" != "tty" ]; then
                    zathura "$f"
                else
                    epr "$f"
                fi
                ;;
            *)
                ${HOME}/.local/bin/scope "$f"
                ;;
        esac
        ;;
    *)
        print_err "[$(basename $0)]: file type not supported."
        file --mime-type "$f"
        ;;
esac