From 829951d8e7ba114c89370688b5f75fa0bf1cd3af Mon Sep 17 00:00:00 2001
From: ducoterra <ducoterra@gmail.com>
Date: Sat, 30 Oct 2021 19:19:31 -0400
Subject: [PATCH] init

---
 Dockerfile     |  9 +++++++++
 IMAGE          |  1 +
 Makefile       | 18 ++++++++++++++++++
 README.md      | 27 +++++++++++++++++++++++++++
 SERVER_VERSION |  1 +
 VERSION        |  1 +
 get_server.py  | 42 ++++++++++++++++++++++++++++++++++++++++++
 7 files changed, 99 insertions(+)
 create mode 100644 Dockerfile
 create mode 100644 IMAGE
 create mode 100644 Makefile
 create mode 100644 README.md
 create mode 100644 SERVER_VERSION
 create mode 100644 VERSION
 create mode 100644 get_server.py

diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..524b825
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,9 @@
+FROM python:latest
+
+RUN pip install requests
+COPY get_server.py get_server.py
+RUN chmod +x get_server.py
+WORKDIR /downloads
+
+CMD [ "/get_server.py" ]
+ENTRYPOINT ["python"]
diff --git a/IMAGE b/IMAGE
new file mode 100644
index 0000000..658e90c
--- /dev/null
+++ b/IMAGE
@@ -0,0 +1 @@
+ducoterra/get-minecraft
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..aa3a1ba
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,18 @@
+SHELL := /bin/bash
+
+IMAGE ?= $(shell cat IMAGE):$(shell cat VERSION)
+IMAGE_LATEST ?= $(shell cat IMAGE):latest
+
+.PHONY: buildx-context
+buildx-context:
+	docker buildx create --name arm64 --use --platform linux/amd64,linux/arm64,linux/arm/v8
+
+.PHONY: build
+build:
+	@docker buildx build --platform linux/amd64,linux/arm64 . -t $(IMAGE)
+	@docker buildx build --platform linux/amd64,linux/arm64 . -t $(IMAGE_LATEST) 
+
+.PHONY: push
+push:
+	@docker push $(IMAGE)
+	@docker push $(IMAGE_LATEST)
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..aa2eddb
--- /dev/null
+++ b/README.md
@@ -0,0 +1,27 @@
+# Minecraft Server Getter
+
+Get the url for any minecraft server version
+
+## Usage
+
+### Python
+
+Since this script is designed to be used in Docker it works with
+environment variables. Set SERVER_VERSION=<desired version> and
+get_server.py will write a file called "SERVER_VERSION" with the url
+to download the version requested.
+
+```bash
+export SERVER_VERSION=1.16.4
+python get_server.py
+```
+
+### Docker
+
+This is the intended way to run get_server. The get_server image saves
+the SERVER_VERSION file to /downloads. Mounting /downloads to `pwd` will
+allow the image to write to your current directory.
+
+```bash
+docker run -it -e SERVER_VERSION=1.16.4 -v $(pwd):/downloads ducoterra/get-minecraft:latest
+```
diff --git a/SERVER_VERSION b/SERVER_VERSION
new file mode 100644
index 0000000..d9f6a13
--- /dev/null
+++ b/SERVER_VERSION
@@ -0,0 +1 @@
+https://launchermeta.mojang.com/v1/packages/584f4f319f0acc2f8c9a7d992ae20b95f425c1c5/1.16.4.json
\ No newline at end of file
diff --git a/VERSION b/VERSION
new file mode 100644
index 0000000..3eefcb9
--- /dev/null
+++ b/VERSION
@@ -0,0 +1 @@
+1.0.0
diff --git a/get_server.py b/get_server.py
new file mode 100644
index 0000000..2eaccc5
--- /dev/null
+++ b/get_server.py
@@ -0,0 +1,42 @@
+import requests
+import json
+import os
+
+LATEST = "latest"
+RELEASE = "release"
+SNAPSHOT = "snapshot"
+REQUESTED_VERSION = os.getenv("SERVER_VERSION", LATEST)
+VERSION_FILE = "SERVER_VERSION"
+
+def get_latest_version(latest):
+    return latest.get(RELEASE)
+
+def get_version(versions, latest, id):
+    if id == LATEST:
+        id = get_latest_version(latest)
+
+    result = list(filter(
+        lambda item: item.get('id') == id,
+        versions
+    ))
+    if len(result) == 1:
+        return result[0]
+    elif len(result) > 1:
+        raise ValueError(f"Version {id} didn't return 1 result, it returned {len(result)}!")
+    else:
+        raise ValueError(f"Version {id} had no matches.")
+
+def write_version_file(version):
+    with open(VERSION_FILE, "w") as f:
+        return f.write(version.get('url'))
+
+if __name__ == "__main__":
+    version_manifest = requests.get("https://launchermeta.mojang.com/mc/game/version_manifest_v2.json")
+    version_json = json.loads(version_manifest.text)
+    versions = version_json.get('versions')
+    latest = version_json.get(LATEST)
+
+    print(f"Attempting to get version {REQUESTED_VERSION}.")
+    version = get_version(versions, latest, REQUESTED_VERSION)
+    print(f"Found, writing url to VERSION file.")
+    write_version_file(version)