#!/usr/bin/env bash
fast=0
[[ "$1" == "fast" ]] && fast=1 && shift || [[ "$1" == "test" ]] && fast=2 && shift
args="$@"

lips="$(readlink -f ../Lua/lib/lips)"
YAZ0="$(readlink -f ../z64yaz0)"
DUMP="$(readlink -f ../z64dump.py)"

#extracted="$(readlink -f "$extracted")"
rom="$(readlink -f "$rom")"

mkdir -p build
quiet=0

patchme="build/patchme"

#[ ! -s "$YAZ0" ] && cc -O3 "${YAZ0}.c" -o "$YAZ0"

dump() {
    #(cd "$(dirname "$DUMP")"; ./z64dump.py "$@")
    "$DUMP" "$@"
}

if [ $fast -eq 0 ] || [ ! -d "$patchme" ]; then
    if [ -n "$sha1" ]; then
        [ -d "$patchme" ] && rm -r "$patchme"
        dump -c "$rom"
        mv "$sha1" "$patchme"
    else
        cp "$rom" "build/$out"
    fi
fi

ratio() {
    local len1="$(wc -c < "$1")"
    local len2="$(wc -c < "$2")"

    if [ $len1 -eq 0 ]; then
        [ $quiet -le 0 ] && echo empty
    else
        let percent=(len2*100)/len1
        [ $quiet -le 0 ] && echo "ratio: $percent%"
        return "$((percent < 100))"
    fi
}

unc() {
    local in="$patchme"/"$1".Yaz0
    local out="$patchme"/"$1"

    [ -e "$in" ] || return 0
    "$YAZ0" "$in" > "$out"
    [ $quiet -le 0 ] && echo "uncompressed $1"
    ratio "$out" "$in" || true
    rm "$patchme"/"$1".Yaz0
}

comp() {
    local in="$patchme"/"$1"
    local out="$patchme"/"$1".Yaz0

    [ -e "$in" ] || return 0
    "$YAZ0" "$in" > "$out"
    [ $quiet -le 0 ] && echo "compressed $1"
    ratio "$in" "$out" && {
        [ $quiet -le 1 ] && echo "leaving uncompressed $1"
        rm "$out"
    } || {
        rm "$in"
    }
}

copy_rom() {
    dd if="$patchme".z64 of="$1" bs=$((1024*1024)) count="${2:-32}" status=none
}

# don't copy entire dir; avoid copying dotfiles (.git)
mkdir -p lips
cp "$lips"/* lips