#!/usr/bin/env bash
set -e

fast=0
[[ "$1" == "fast" ]] && fast=1
[[ "$1" == "test" ]] && fast=2

inject=../Lua/inject
sha1=d6133ace5afaa0882cf214cf88daba39e266c078
extracted=../dump/mm-US10-"$sha1"
rom=../roms/everything/"Legend of Zelda, The - Majora's Mask (U) [!].z64"
lips=../Lua/lib/lips

code="0031 V00B3C000"
extra="1552 V02EE7040"

ratio() {
    len1="$(wc -c < "$1")"
    len2="$(wc -c < "$2")"
    let percent=(len2*100)/len1
    echo "ratio: $percent%"
}

unc() {
    [ -e patchme/"$1".Yaz0 ] || return 0
    ../z64yaz0 patchme/"$1".Yaz0 > patchme/"$1"
    echo "uncompressed $1"
    ratio patchme/"$1" patchme/"$1".Yaz0
    rm patchme/"$1".Yaz0
}

comp() {
    [ -e patchme/"$1" ] || return 0
    ../z64yaz0 patchme/"$1" > patchme/"$1".Yaz0
    echo "compressed $1"
    ratio patchme/"$1" patchme/"$1".Yaz0
    rm patchme/"$1"
}

#if ! [ -d "$extracted" ]; then
if [ $fast -eq 0 ] || [ ! -d patchme ]; then
    [ -d patchme ] && rm -r patchme
    (cd ..; ./z64dump.py -c "$rom")
    mv ../"$sha1" patchme
fi
#if [ $fast -eq 0 ]; then
#    [ -d patchme ] && rm -r patchme
#    cp -r "$extracted" patchme
#fi

unc "$code"

# don't copy entire dir; avoid copying dotfiles (.git)
mkdir -p lips
cp "$lips"/* lips
cp "$inject/"{crc32,entrances}.asm .

touch "extra"

luajit patch.lua code.asm patchme/"$code" 0
luajit patch.lua extra.asm extra 0x80780000

dd if=extra of=patchme/"$extra" bs=370688 count=1 2>/dev/null
rm extra

if [ $fast -ne 2 ]; then
    comp "$code"
    comp "$extra"
    (cd ..; ./z64dump.py patch/patchme)
    dd if=patchme.z64 of=mm-bq.z64 bs=$((1024*1024)) count=32 status=none
fi