#!/bin/sh
CACHE="$HOME/.cache/lf/thumbnail.$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' \
    -- "$(readlink -f "$1")" | sha256sum | awk '{print $1}'))"

image() {
    if [ -n "$DISPLAY" ] && [ -z "$WAYLAND_DISPLAY" ]; then
        printf '{"action": "add", "identifier": "PREVIEW", "x": "%s", "y":"%s", "width": "%s", "height": "%s", "scaler": "contain", "path": "%s"}\n' \
            "$4" "$5" "$(($2-1))" "$(($3-1))" "$1" > "$FIFO_UEBERZUG"
        exit 1
    else
        chafa "$1" -s "$4x"
    fi
}

batorcat() {
    file="$1"
    shift
    if command -v bat > /dev/null 2>&1; then
        bat --color=always --style=plain --pager=never "$file" "$@"
    else
        cat "$file"
    fi
}

glowormdcat() {
    file="$1"
    shift
    if command -v glow > /dev/null 2>&1; then
        glow "$file"
    else
        mdcat "$file"
    fi
}

case "$(printf "%s\n" "$(readlink -f "$1")" | awk '{print tolower($0)}')" in
    *.tgz|*.tar.gz) tar tzf "$1" ;;
    *.tar.bz2|*.tbz2) tar tjf "$1" ;;
    *.tar.txz|*.txz) xz --list "$1" ;;
    *.tar) tar tf "$1" ;;
    # *.zip|*.jar|*.war|*.ear|*.oxt) unzip -l "$1" ;;
    # *.gz) gzip -l "$1" ;;
    # *.rar) unrar l "$1" ;;
    *.md) glowormdcat "$1";;
    # *.7z) 7z l "$1" ;;
    *.[1-8]) man "$1" | col -b ;;
    *.o) nm "$1";;
    *.torrent) transmission-show "$1" ;;
    *.iso) iso-info --no-header -l "$1" ;;
    *.odt|*.ods|*.odp|*.sxw) odt2txt "$1" ;;
    *.doc) catdoc "$1" ;;
    *.docx) docx2txt "$1" ;;
    *.xml|*.html) w3m -dump "$1";;
    *.json ) jq '.' "$1";;
    *.xls|*.xlsx)
        ssconvert --export-type=Gnumeric_stf:stf_csv "$1" "fd://1" | batorcat --language=csv
        ;;
    *.wav|*.mp3|*.flac|*.m4a|*.wma|*.ape|*.ac3|*.og[agx]|*.spx|*.opus|*.as[fx]|*.mka)
        exiftool "$1"
        ;;
    *.pdf)
        [ ! -f "${CACHE}.jpg" ] && pdftoppm -jpeg -f 1 -singlefile "$1" "$CACHE"
        image "${CACHE}.jpg" "$2" "$3" "$4" "$5"
        ;;
    *.epub)
        [ ! -f "$CACHE" ] && epub-thumbnailer "$1" "$CACHE" 1024
        image "$CACHE" "$2" "$3" "$4" "$5"
        ;;
    *.cbz|*.cbr|*.cbt)
        [ ! -f "$CACHE" ] && comicthumb "$1" "$CACHE" 1024
        image "$CACHE" "$2" "$3" "$4" "$5"
        ;;
    *.avi|*.mp4|*.wmv|*.dat|*.3gp|*.ogv|*.mkv|*.mpg|*.mpeg|*.vob|*.fl[icv]|*.m2v|*.mov|*.webm|*.ts|*.mts|*.m4v|*.r[am]|*.qt|*.divx)
        [ ! -f "${CACHE}.jpg" ] && \
            ffmpegthumbnailer -i "$1" -o "${CACHE}.jpg" -s 0 -q 5
        image "${CACHE}.jpg" "$2" "$3" "$4" "$5"
        ;;
    *.bmp|*.jpg|*.jpeg|*.png|*.xpm|*.webp|*.tiff|*.gif|*.jfif|*.ico)
        image "$1" "$2" "$3" "$4" "$5"
        ;;
    *.svg)
        [ ! -f "${CACHE}.jpg" ] && convert "$1" "${CACHE}.jpg"
        image "${CACHE}.jpg" "$2" "$3" "$4" "$5"
        ;;
    *.ino) batorcat --language=cpp "$1" ;;
    *) file -ibL "$1" | grep -q text && batorcat "$1" || file -Lb "$1" ;;
esac
exit 0