From 2ed09ccbe389b27ac698b845e49da5a823d59bad Mon Sep 17 00:00:00 2001
From: TheAfroOfDoom <tehafroofdoom@gmail.com>
Date: Sun, 4 Feb 2024 15:36:57 -0500
Subject: [PATCH] add `sync.down` script to extract `world.zip` to client saves
 directory - closes #53 - creates a backup in a `tmp` directory so we don't
 unintentionally lose local world changes - tested by running the following
 steps:   1. sync-up world with `yarn sync`   2. move player to a different
 spot in the world (e.g. turn around 180 degrees)   3. sync-down world with
 `yarn down`   4. open world and see that player is in the original spot
 before we turned them around

---
 .gitignore                    |   4 ++
 package-scripts/sync-world.js |  49 ++++++++++++++---
 package.json                  |   2 +
 yarn.lock                     | 101 +++++++++++++++++++++++++++++++++-
 4 files changed, 147 insertions(+), 9 deletions(-)

diff --git a/.gitignore b/.gitignore
index 616fbe5e0..521ccbe41 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,3 +16,7 @@ resourcepack/assets/animated_java
 resourcepack/assets/minecraft/models/item/animated_java_empty.json
 resourcepack/assets/minecraft/models/item/white_dye.json
 resourcepack/resourcepack.ajmeta
+
+## temp files
+# old world folders that have been backed up after running `yarn down`
+tmp
diff --git a/package-scripts/sync-world.js b/package-scripts/sync-world.js
index a35682881..634491789 100644
--- a/package-scripts/sync-world.js
+++ b/package-scripts/sync-world.js
@@ -1,6 +1,8 @@
 const archiver = require('archiver');
+const chalk = require('chalk');
 const dotenv = require('dotenv');
-const { createWriteStream, remove } = require('fs-extra');
+const extract = require('extract-zip');
+const { createWriteStream, remove, stat, mkdir, exists } = require('fs-extra');
 const minimist = require('minimist');
 
 const { assertEnvironmentVariables } = require('./utils');
@@ -13,11 +15,12 @@ const minecraftPath = process.env.MINECRAFT_PATH;
 const worldName = process.env.WORLD_NAME;
 
 const minecraftWorldPath = `${minecraftPath}/saves/${worldName}`;
+const worldBackupPath = './world.zip';
+const tempBackupPath = './tmp/world-backups';
 
-const syncUp = async () => {
-  await remove('./world.zip');
-  return new Promise((resolve, reject) => {
-    const output = createWriteStream('./world.zip');
+const backupWorld = async (dest, useColor = true) =>
+  new Promise((resolve, reject) => {
+    const output = createWriteStream(dest);
     const archive = archiver('zip');
 
     archive.on('error', function (err) {
@@ -32,7 +35,10 @@ const syncUp = async () => {
     });
 
     output.on('close', function () {
-      console.log('Finished world backup');
+      const prefix = 'Finished world backup to:';
+      const prefixFormatted = useColor ? chalk.greenBright(prefix) : prefix;
+      const destFormatted = chalk.blueBright(dest);
+      console.log(prefixFormatted, destFormatted);
       resolve();
     });
 
@@ -40,10 +46,39 @@ const syncUp = async () => {
     archive.directory(minecraftWorldPath, false);
     archive.finalize();
   });
+
+/** Backup name will be the minecraft save directory's last modified date */
+const createTempWorldBackupName = async () => {
+  const modifiedTime = (await stat(minecraftWorldPath)).mtime;
+  const formattedTime = modifiedTime.toISOString().replaceAll(':', '.');
+  return `world-${formattedTime}.zip`;
+};
+
+const syncUp = async () => {
+  await remove(worldBackupPath);
+  await backupWorld(worldBackupPath);
 };
 
 const syncDown = async () => {
-  throw new Error('Unimplemented');
+  // Create tmp/world-backups folder if it doesn't exist
+  if (!(await exists(tempBackupPath))) {
+    await mkdir(tempBackupPath, { recursive: true });
+  }
+
+  console.log('Backing up your current world as a precautionary measure...');
+  const name = await createTempWorldBackupName();
+  const path = `${tempBackupPath}/${name}`;
+  await backupWorld(path, false);
+
+  await remove(minecraftWorldPath);
+  await extract(worldBackupPath, { dir: minecraftWorldPath });
+
+  const srcFormatted = chalk.blueBright(worldBackupPath);
+  const destFormatted = chalk.blueBright(minecraftWorldPath);
+  const successMessage = chalk.greenBright(
+    `Extracted ${srcFormatted} to ${destFormatted}`,
+  );
+  console.log(successMessage);
 };
 
 const main = async () => {
diff --git a/package.json b/package.json
index d886faab5..81bcc5f4a 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,7 @@
   "name": "omega-flowey-minecraft-remastered",
   "packageManager": "yarn@3.6.3",
   "scripts": {
+    "down": "nps sync.world.down",
     "lint": "nps lint",
     "lint.fix": "nps lint.fix",
     "start": "nps",
@@ -16,6 +17,7 @@
     "chokidar": "3.5.3",
     "dotenv": "16.3.1",
     "eslint": "8.56.0",
+    "extract-zip": "2.0.1",
     "find-process": "1.4.7",
     "fs-extra": "11.2.0",
     "glob": "10.3.10",
diff --git a/yarn.lock b/yarn.lock
index c53ad607a..abc0e92c4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -149,6 +149,24 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/node@npm:*":
+  version: 20.11.16
+  resolution: "@types/node@npm:20.11.16"
+  dependencies:
+    undici-types: ~5.26.4
+  checksum: 51f0831c1219bf4698e7430aeb9892237bd851deeb25ce23c5bb0ceefcc77c3b114e48f4e98d9fc26def5a87ba9d8079f0281dd37bee691140a93f133812c152
+  languageName: node
+  linkType: hard
+
+"@types/yauzl@npm:^2.9.1":
+  version: 2.10.3
+  resolution: "@types/yauzl@npm:2.10.3"
+  dependencies:
+    "@types/node": "*"
+  checksum: 5ee966ea7bd6b2802f31ad4281c92c4c0b6dfa593c378a2582c58541fa113bec3d70eb0696b34ad95e8e6861a884cba6c3e351285816693ed176222f840a8c08
+  languageName: node
+  linkType: hard
+
 "@ungap/structured-clone@npm:^1.2.0":
   version: 1.2.0
   resolution: "@ungap/structured-clone@npm:1.2.0"
@@ -406,7 +424,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"buffer-crc32@npm:^0.2.1":
+"buffer-crc32@npm:^0.2.1, buffer-crc32@npm:~0.2.3":
   version: 0.2.13
   resolution: "buffer-crc32@npm:0.2.13"
   checksum: 06252347ae6daca3453b94e4b2f1d3754a3b146a111d81c68924c22d91889a40623264e95e67955b1cb4a68cbedf317abeabb5140a9766ed248973096db5ce1c
@@ -834,6 +852,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"end-of-stream@npm:^1.1.0":
+  version: 1.4.4
+  resolution: "end-of-stream@npm:1.4.4"
+  dependencies:
+    once: ^1.4.0
+  checksum: 530a5a5a1e517e962854a31693dbb5c0b2fc40b46dad2a56a2deec656ca040631124f4795823acc68238147805f8b021abbe221f4afed5ef3c8e8efc2024908b
+  languageName: node
+  linkType: hard
+
 "env-paths@npm:^2.2.0":
   version: 2.2.1
   resolution: "env-paths@npm:2.2.1"
@@ -1011,6 +1038,23 @@ __metadata:
   languageName: node
   linkType: hard
 
+"extract-zip@npm:2.0.1":
+  version: 2.0.1
+  resolution: "extract-zip@npm:2.0.1"
+  dependencies:
+    "@types/yauzl": ^2.9.1
+    debug: ^4.1.1
+    get-stream: ^5.1.0
+    yauzl: ^2.10.0
+  dependenciesMeta:
+    "@types/yauzl":
+      optional: true
+  bin:
+    extract-zip: cli.js
+  checksum: 8cbda9debdd6d6980819cc69734d874ddd71051c9fe5bde1ef307ebcedfe949ba57b004894b585f758b7c9eeeea0e3d87f2dda89b7d25320459c2c9643ebb635
+  languageName: node
+  linkType: hard
+
 "fast-deep-equal@npm:^3.1.1, fast-deep-equal@npm:^3.1.3":
   version: 3.1.3
   resolution: "fast-deep-equal@npm:3.1.3"
@@ -1048,6 +1092,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"fd-slicer@npm:~1.1.0":
+  version: 1.1.0
+  resolution: "fd-slicer@npm:1.1.0"
+  dependencies:
+    pend: ~1.2.0
+  checksum: c8585fd5713f4476eb8261150900d2cb7f6ff2d87f8feb306ccc8a1122efd152f1783bdb2b8dc891395744583436bfd8081d8e63ece0ec8687eeefea394d4ff2
+  languageName: node
+  linkType: hard
+
 "file-entry-cache@npm:^6.0.1":
   version: 6.0.1
   resolution: "file-entry-cache@npm:6.0.1"
@@ -1242,6 +1295,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"get-stream@npm:^5.1.0":
+  version: 5.2.0
+  resolution: "get-stream@npm:5.2.0"
+  dependencies:
+    pump: ^3.0.0
+  checksum: 8bc1a23174a06b2b4ce600df38d6c98d2ef6d84e020c1ddad632ad75bac4e092eeb40e4c09e0761c35fc2dbc5e7fff5dab5e763a383582c4a167dd69a905bd12
+  languageName: node
+  linkType: hard
+
 "glob-parent@npm:^6.0.2":
   version: 6.0.2
   resolution: "glob-parent@npm:6.0.2"
@@ -2189,6 +2251,7 @@ __metadata:
     chokidar: 3.5.3
     dotenv: 16.3.1
     eslint: 8.56.0
+    extract-zip: 2.0.1
     find-process: 1.4.7
     fs-extra: 11.2.0
     glob: 10.3.10
@@ -2202,7 +2265,7 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"once@npm:^1.3.0":
+"once@npm:^1.3.0, once@npm:^1.3.1, once@npm:^1.4.0":
   version: 1.4.0
   resolution: "once@npm:1.4.0"
   dependencies:
@@ -2445,6 +2508,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"pend@npm:~1.2.0":
+  version: 1.2.0
+  resolution: "pend@npm:1.2.0"
+  checksum: 6c72f5243303d9c60bd98e6446ba7d30ae29e3d56fdb6fae8767e8ba6386f33ee284c97efe3230a0d0217e2b1723b8ab490b1bbf34fcbb2180dbc8a9de47850d
+  languageName: node
+  linkType: hard
+
 "picomatch@npm:^2.0.4, picomatch@npm:^2.2.1":
   version: 2.3.1
   resolution: "picomatch@npm:2.3.1"
@@ -2550,6 +2620,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"pump@npm:^3.0.0":
+  version: 3.0.0
+  resolution: "pump@npm:3.0.0"
+  dependencies:
+    end-of-stream: ^1.1.0
+    once: ^1.3.1
+  checksum: e42e9229fba14732593a718b04cb5e1cfef8254544870997e0ecd9732b189a48e1256e4e5478148ecb47c8511dca2b09eae56b4d0aad8009e6fac8072923cfc9
+  languageName: node
+  linkType: hard
+
 "punycode@npm:^2.1.0":
   version: 2.3.1
   resolution: "punycode@npm:2.3.1"
@@ -3263,6 +3343,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"undici-types@npm:~5.26.4":
+  version: 5.26.5
+  resolution: "undici-types@npm:5.26.5"
+  checksum: 3192ef6f3fd5df652f2dc1cd782b49d6ff14dc98e5dced492aa8a8c65425227da5da6aafe22523c67f035a272c599bb89cfe803c1db6311e44bed3042fc25487
+  languageName: node
+  linkType: hard
+
 "unique-filename@npm:^3.0.0":
   version: 3.0.0
   resolution: "unique-filename@npm:3.0.0"
@@ -3451,6 +3538,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"yauzl@npm:^2.10.0":
+  version: 2.10.0
+  resolution: "yauzl@npm:2.10.0"
+  dependencies:
+    buffer-crc32: ~0.2.3
+    fd-slicer: ~1.1.0
+  checksum: 7f21fe0bbad6e2cb130044a5d1d0d5a0e5bf3d8d4f8c4e6ee12163ce798fee3de7388d22a7a0907f563ac5f9d40f8699a223d3d5c1718da90b0156da6904022b
+  languageName: node
+  linkType: hard
+
 "yocto-queue@npm:^0.1.0":
   version: 0.1.0
   resolution: "yocto-queue@npm:0.1.0"