#!/bin/bash

. "$(ffoom path)" || exit 3

ffoo import inigrep
ffoo import pretty


#
# Where to store clips
#
STORAGE_DIR="$SATURNIN_CACHE_HOME/clips"

usage() {
    mkusage "[ls]" \
            "save [-1|-2|-c]" \
            "load [-1|-2|-c]" \
            "rm" \
            "clean"
}

clipln() {
    #
    # Print desired clipboard(s) and \n
    #
    case $1 in
        primary|secondary|clipboard)
            xclip -o -selection "$1"   2>/dev/null
            ;;
        ALL)
            xclip -o -selection primary   2>/dev/null
            xclip -o -selection secondary 2>/dev/null
            xclip -o -selection clipboard 2>/dev/null
            ;;
    esac
    echo ""
}

save_clip() {
    #
    # Save single clip
    #
    local clipname=$1
    mkdir -p "$STORAGE_DIR" || die "could not create directory for saving"
    local path="$STORAGE_DIR/$(date +%Y%m%d-%H%M%S.clip)"
    clipln "$clipname" > "$path"
}

lsclips() {
    #
    # List clips with MIME types and hints
    #
    local ft hint name
    test -d "$STORAGE_DIR" || return 0
    find "$STORAGE_DIR" -name "*.clip" 2>/dev/null \
      | while read name;
        do
            ft=$(file -b -i "$name" | cut -d\; -f1)
            case $ft in
                text/*)
                    hint=$(head -c 80 "$name" | tr '\n' '↵')
                    ;;
                *)
                    hint=$(head -c 16 "$name" | hexdump -C | head -1)
                    ;;
            esac
            echos "$(basename "$name") || $ft || $hint"
        done
}

lspaths() {
    #
    # List only clip paths
    #
    ls "$STORAGE_DIR/"*.clip
}

load_clip() {
    #
    # Load single clip of choice
    #
    local clipname=$1
    local name=$(pick_clip)
    test -n "$name" || return 1
    < "$STORAGE_DIR/$name" xclip -i -selection "$clipname"
}

rm_clip() {
    #
    # Remove single clip of choice
    #
    local name=$(pick_clip)
    test -n "$name" || return 1
    rm -f "$STORAGE_DIR/$name"
}

rm_all() {
    #
    # Drop all clips
    #
    test -n "$STORAGE_DIR" || die "storage directory is unset, aborting"
    test -d "$STORAGE_DIR" || return 0
    find "$STORAGE_DIR" -name "*.clip" -print0 | xargs -0 rm -f
    rmdir "$STORAGE_DIR" 2>/dev/null | :
}

pick_clip() {
    saturnin clip ls \
      | saturnin dmenu \
      | cut -d\   -f 1
}


clipname=primary
action=list_nice
while true; do case "$1" in
    save)   action=save;        shift ;;
    load)   action=load;        shift ;;
    ls)     action=list;        shift ;;
    lsh)    action=list_nice    shift ;;
    rm)     action=remove;      shift ;;
    clean)  action=clean;       shift ;;
    -1)     clipname=primary;   shift ;;
    -2)     clipname=secondary; shift ;;
    -c)     clipname=clipboard; shift ;;
    "")     break                     ;;
    *)      usage                     ;;
esac done

debug "\$*='$*'"
debug -v clipname action

case $action in
    save)       save_clip $clipname ;;
    load)       load_clip $clipname ;;
    remove)     rm_clip ;;
    clean)      rm_all ;;
    list)       lspaths ;;
    list_nice)  lsclips ;;
esac