#!/usr/bin/env bash
# Compila o Apple Master Revived (jogo de pegar macas de Manuel Huber, codigo MIT e arte CC0; Zig + raylib 4.x via
# raylib-zig) a partir do commit 9e3a4f7 de gitlab.com/zahnputzmonster/apple-master, com os submodulos nos commits
# que o repositorio fixa (raysan5/raylib ae50bfa, zlib; Not-Nik/raylib-zig f8735a8, MIT).
#
# O "zig build" do projeto nao roda aqui: o Zig 0.11.0 que o projeto pede (ci/Dockerfile) nao consegue ligar o proprio
# build runner no macOS atual (simbolos _abort, _free... indefinidos) e as versoes novas do Zig quebram o build.zig. Entao
# os mesmos passos do build.zig e do ci/build-html5.sh sao feitos a mao: (1) o jogo em Zig vira biblioteca
# wasm32-wasi com "zig build-lib -O ReleaseSmall" (modulos raylib e raylib-math como no build.zig; texturas embutidas
# com @embedFile); (2) o raylib sai de emcc (-DPLATFORM_WEB -DGRAPHICS_API_OPENGL_ES2, mesmos arquivos e flags do build.zig
# do raylib); (3) o webhack.c de raylib-zig (__stack_chk_guard, __stack_chk_fail, errno) vira objeto com "zig cc";
# (4) emcc liga tudo com os mesmos argumentos do raylib-zig (-sFULL-ES3=1 -sUSE_GLFW=3 -sASYNCIFY -O3) e a pagina do
# jogo e a html/index.html do autor com start.js.
#
# Mudanca na pagina (apple-master/apple-master-fredygames.patch): uma CSP que bloqueia conexoes fora da propria origem.
# O jogo nao usa audio, rede nem fontes de fora (a fonte e a padrao embutida no raylib).
#
# Ferramentas em artifacts/tools: Zig 0.11.0 (macos-aarch64, sha256 abaixo) e o Emscripten 6.0.10 (emsdk).
#
#   src/FredGames.Bundler/Builds/build-apple-master.sh
#
# Saida: artifacts/build/apple-master-9e3a4f7/{apple-master-9e3a4f7-dist.tar.gz,licenses.txt}; o tar.gz (pasta dist/) tem
# que sair igual em dois builds seguidos.

set -euo pipefail

COMMIT=9e3a4f73c33c40510527daa076c5e5c419d6764f
SHA256=cc7058adde9d542d6c166d483f659785350cd4a6d3dc6151978101a4e2bc3574
RAYLIB=ae50bfa2cc569c0f8d5bc4315d39db64005b1b08
RAYLIB_SHA256=964bfe348b78fa655dcdd3483238675d87f56712ef65746b3fc74d162a45eef6
RAYLIBZIG=f8735a8cc79db221d3c651c93778cfdb5066818d
RAYLIBZIG_SHA256=7e350a197d1b7b222a1de363eda34dc4b632fd08fe297659bc990073345056d7
ZIG=0.11.0
ZIG_SHA256=c6ebf927bb13a707d74267474a9f553274e64906fd21bf1c75a20bde8cadf7b2

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(git -C "$here" rev-parse --show-toplevel 2>/dev/null || pwd)"
out="$root/artifacts/build/apple-master-${COMMIT:0:7}"
cache="$root/artifacts/build/cache"
tools="$root/artifacts/tools"

mkdir -p "$cache"
fetch() {
  if [ ! -f "$cache/$2" ]; then
    curl -fsSL --retry 4 "$1" -o "$cache/$2.partial" && mv "$cache/$2.partial" "$cache/$2"
  fi
  echo "$3  $cache/$2" | shasum -a 256 -c -
}
# O GitLab recusa o /-/archive/ para curl; a API entrega o mesmo commit.
fetch "https://gitlab.com/api/v4/projects/zahnputzmonster%2Fapple-master/repository/archive.tar.gz?sha=$COMMIT" "apple-master-${COMMIT:0:7}.tar.gz" "$SHA256"
fetch "https://github.com/raysan5/raylib/archive/$RAYLIB.tar.gz" "raylib-${RAYLIB:0:7}.tar.gz" "$RAYLIB_SHA256"
fetch "https://github.com/Not-Nik/raylib-zig/archive/$RAYLIBZIG.tar.gz" "raylib-zig-${RAYLIBZIG:0:7}.tar.gz" "$RAYLIBZIG_SHA256"
fetch "https://ziglang.org/download/$ZIG/zig-macos-aarch64-$ZIG.tar.xz" "zig-macos-aarch64-$ZIG.tar.xz" "$ZIG_SHA256"

if [ ! -x "$tools/zig-$ZIG/zig" ]; then
  mkdir -p "$tools/zig-$ZIG.tmp"
  tar -xJf "$cache/zig-macos-aarch64-$ZIG.tar.xz" -C "$tools/zig-$ZIG.tmp" --strip-components 1
  mv "$tools/zig-$ZIG.tmp" "$tools/zig-$ZIG"
fi
zig="$tools/zig-$ZIG/zig"
[ "$("$zig" version)" = "$ZIG" ] || { echo "Zig $ZIG esperado em $zig." >&2; exit 1; }
# shellcheck disable=SC1091
source "$tools/emsdk/emsdk_env.sh" >/dev/null 2>&1
emver="$(emcc --version 2>/dev/null | sed -n 1p)"
case "$emver" in *" 6.0.10 "*) ;; *) echo "Emscripten 6.0.10 esperado (artifacts/tools/emsdk): $emver" >&2; exit 1 ;; esac

rm -rf "$out"
mkdir -p "$out/tree/ext/raylib" "$out/tree/ext/raylib-zig" "$out/obj" "$out/game" "$out/dist"
tar -xzf "$cache/apple-master-${COMMIT:0:7}.tar.gz" -C "$out/tree" --strip-components 1
tar -xzf "$cache/raylib-${RAYLIB:0:7}.tar.gz" -C "$out/tree/ext/raylib" --strip-components 1
tar -xzf "$cache/raylib-zig-${RAYLIBZIG:0:7}.tar.gz" -C "$out/tree/ext/raylib-zig" --strip-components 1
patch -s -p1 -d "$out/tree" < "$here/apple-master/apple-master-fredygames.patch"

export ZIG_GLOBAL_CACHE_DIR="$out/zig-cache-global" ZIG_LOCAL_CACHE_DIR="$out/zig-cache-local"
cd "$out/tree"

# 1. o jogo
"$zig" build-lib src/main.zig \
  --mod raylib::ext/raylib-zig/lib/raylib-zig.zig \
  --mod raylib-math:raylib-zig=raylib:ext/raylib-zig/lib/raylib-zig-math.zig \
  --deps raylib,raylib-math \
  -target wasm32-wasi -O ReleaseSmall -lc --name apple-master -femit-bin="$out/game/libapple-master.a"
# 2. o raylib
for f in rcore rshapes rtextures rtext rmodels raudio utils; do
  emcc -c -O3 -std=gnu99 -D_GNU_SOURCE -DGL_SILENCE_DEPRECATION=199309L -DPLATFORM_WEB -DGRAPHICS_API_OPENGL_ES2 \
    -Iext/raylib/src -Iext/raylib/src/external/glfw/include "ext/raylib/src/$f.c" -o "$out/obj/$f.o" 2>/dev/null
done
# 3. o webhack.c do raylib-zig (o texto esta no build.zig dele, em "webhack_c")
cat > "$out/webhack.c" <<'C'
#include <stdint.h>
uintptr_t __stack_chk_guard;
void __stack_chk_fail(void){}
int errno;
C
"$zig" cc -target wasm32-wasi -c -o "$out/obj/webhack.o" "$out/webhack.c"
# 4. a ligacao
emcc -O3 -sFULL-ES3=1 -sUSE_GLFW=3 -sASYNCIFY "$out/game/libapple-master.a.o" "$out/obj/"*.o -o "$out/obj/index.html" 2>/dev/null
[ -f "$out/obj/index.wasm" ] && [ -f "$out/obj/index.js" ]

cp "$out/obj/index.js" "$out/obj/index.wasm" "$out/tree/html/index.html" "$out/tree/html/start.js" "$out/dist/"
{
  echo "== apple-master (LICENSE, MIT) e arte (Assets.LICENSE, CC0 1.0): ver o LICENSE.txt do jogo no site"
  echo
  echo "== raylib (LICENSE, zlib)"
  cat "$out/tree/ext/raylib/LICENSE"
  echo
  echo "== raylib-zig (LICENSE, MIT)"
  cat "$out/tree/ext/raylib-zig/LICENSE"
  echo
  echo "== Zig $ZIG (biblioteca padrao, LICENSE, MIT)"
  cat "$tools/zig-$ZIG/LICENSE"
  echo
  echo "== Emscripten (LICENSE, MIT / UIUC)"
  cat "$tools/emsdk/upstream/emscripten/LICENSE"
} > "$out/licenses.txt"

# dist/ vira um tar.gz deterministico (datas fixas, ordem fixa, sem dono).
find "$out/dist" -exec touch -t 202404180000 {} +
( cd "$out" && find dist -type f | LC_ALL=C sort > files.txt \
  && COPYFILE_DISABLE=1 tar --format=ustar --uid 0 --gid 0 --uname root --gname root -n -cf - -T files.txt \
  | gzip -n -9 > "apple-master-${COMMIT:0:7}-dist.tar.gz" && rm files.txt )
rm -rf "$out/tree" "$out/obj" "$out/game" "$out/zig-cache-global" "$out/zig-cache-local" "$out/webhack.c"
ls -l "$out/apple-master-${COMMIT:0:7}-dist.tar.gz"
shasum -a 256 "$out/apple-master-${COMMIT:0:7}-dist.tar.gz" "$out/licenses.txt"