Merge pull request #7 from mat-1/1.19

1.19

1 files changed, 90 insertions, 0 deletions

diff --git a/codegen/lib/download.py b/codegen/lib/download.py
new file mode 100644
index 00000000..7d14a3a3
--- /dev/null
+++ b/codegen/lib/download.py
@@ -0,0 +1,90 @@
+from .mappings import Mappings
+import requests
+import json
+import os
+
+# make sure the downloads directory exists
+if not os.path.exists('downloads'):
+    os.mkdir('downloads')
+
+
+def get_burger():
+    if not os.path.exists('downloads/Burger'):
+        print('\033[92mDownloading Burger...\033[m')
+        os.system(
+            'cd downloads && git clone https://github.com/pokechu22/Burger && cd Burger && git pull')
+
+        print('\033[92mInstalling dependencies...\033[m')
+        os.system('cd downloads/Burger && pip install six jawa')
+
+
+def get_version_manifest():
+    if not os.path.exists(f'downloads/version_manifest.json'):
+        print(
+            f'\033[92mDownloading version manifest...\033[m')
+        version_manifest_data = requests.get(
+            'https://launchermeta.mojang.com/mc/game/version_manifest.json').json()
+        with open(f'downloads/version_manifest.json', 'w') as f:
+            json.dump(version_manifest_data, f)
+    else:
+        with open(f'downloads/version_manifest.json', 'r') as f:
+            version_manifest_data = json.load(f)
+    return version_manifest_data
+
+
+def get_version_data(version_id: str):
+    if not os.path.exists(f'downloads/{version_id}.json'):
+        version_manifest_data = get_version_manifest()
+
+        print(
+            f'\033[92mGetting data for \033[1m{version_id}..\033[m')
+        try:
+            package_url = next(
+                filter(lambda v: v['id'] == version_id, version_manifest_data['versions']))['url']
+        except StopIteration:
+            raise ValueError(
+                f'No version with id {version_id} found. Maybe delete downloads/version_manifest.json and try again?')
+        package_data = requests.get(package_url).json()
+        with open(f'downloads/{version_id}.json', 'w') as f:
+            json.dump(package_data, f)
+    else:
+        with open(f'downloads/{version_id}.json', 'r') as f:
+            package_data = json.load(f)
+    return package_data
+
+
+def get_client_jar(version_id: str):
+    if not os.path.exists(f'downloads/client-{version_id}.jar'):
+        package_data = get_version_data(version_id)
+        print('\033[92mDownloading client jar...\033[m')
+        client_jar_url = package_data['downloads']['client']['url']
+        with open(f'downloads/client-{version_id}.jar', 'wb') as f:
+            f.write(requests.get(client_jar_url).content)
+
+
+def get_burger_data_for_version(version_id: str):
+    if not os.path.exists(f'downloads/burger-{version_id}.json'):
+        get_burger()
+        get_client_jar(version_id)
+
+        os.system(
+            f'cd downloads/Burger && python munch.py ../client-{version_id}.jar --output ../burger-{version_id}.json'
+        )
+    with open(f'downloads/burger-{version_id}.json', 'r') as f:
+        return json.load(f)
+
+
+def get_mappings_for_version(version_id: str):
+    if not os.path.exists(f'downloads/mappings-{version_id}.txt'):
+        package_data = get_version_data(version_id)
+
+        client_mappings_url = package_data['downloads']['client_mappings']['url']
+
+        mappings_text = requests.get(client_mappings_url).text
+
+        with open(f'downloads/mappings-{version_id}.txt', 'w') as f:
+            f.write(mappings_text)
+    else:
+        with open(f'downloads/mappings-{version_id}.txt', 'r') as f:
+            mappings_text = f.read()
+    return Mappings.parse(mappings_text)