feat: add workarounds for unobfuscated versions

Signed-off-by: Sefa Eyeoglu <contact@scrumplex.net>

4 files changed, 37 insertions, 11 deletions

diff --git a/meta/common/fabric.py b/meta/common/fabric.py
index 2a35695cf1..667c38482f 100644
--- a/meta/common/fabric.py
+++ b/meta/common/fabric.py
@@ -10,3 +10,10 @@ LOADER_COMPONENT = "net.fabricmc.fabric-loader"
 INTERMEDIARY_COMPONENT = "net.fabricmc.intermediary"
 
 DATETIME_FORMAT_HTTP = "%a, %d %b %Y %H:%M:%S %Z"
+
+# version -> releaseTime
+BROKEN_INTERMEDIARIES = {
+    "1.21.11-pre1_unobfuscated": "2025-11-19T11:03:07+00:00"  # releaseTime of 1.21.11 intermediary
+}
+EARLY_UNOBFUSCATED_SUFFIX = "_unobfuscated"
+NOOP_INTERMEDIARY_VERSION = "net.fabricmc:intermediary:0.0.0"
diff --git a/meta/model/fabric.py b/meta/model/fabric.py
index 5cb0e9caab..7acd7c8756 100644
--- a/meta/model/fabric.py
+++ b/meta/model/fabric.py
@@ -6,6 +6,10 @@ from pydantic import Field
 from . import Library, MetaBase
 
 
+EARLY_UNOBFUSCATED_SUFFIX = "_unobfuscated"
+NOOP_INTERMEDIARY_VERSION = "net.fabricmc:intermediary:0.0.0"
+
+
 class FabricInstallerArguments(MetaBase):
     client: Optional[List[str]]
     common: Optional[List[str]]
diff --git a/meta/run/generate_fabric.py b/meta/run/generate_fabric.py
index 7ca50dd6aa..9d1f96263b 100755
--- a/meta/run/generate_fabric.py
+++ b/meta/run/generate_fabric.py
@@ -8,11 +8,13 @@ from meta.common import (
     transform_maven_key,
 )
 from meta.common.fabric import (
+    EARLY_UNOBFUSCATED_SUFFIX,
     JARS_DIR,
     INSTALLER_INFO_DIR,
     META_DIR,
     INTERMEDIARY_COMPONENT,
     LOADER_COMPONENT,
+    NOOP_INTERMEDIARY_VERSION,
 )
 from meta.model import MetaVersion, Dependency, Library, MetaPackage, GradleSpecifier
 from meta.model.fabric import FabricJarInfo, FabricInstallerDataV1, FabricMainClasses
@@ -76,8 +78,13 @@ def process_intermediary_version(entry) -> MetaVersion:
     v.type = "release"
     v.libraries = []
     v.volatile = True
+
+    maven = entry["maven"]
+    if EARLY_UNOBFUSCATED_SUFFIX in entry["version"]:
+        maven = NOOP_INTERMEDIARY_VERSION
+
     intermediary_lib = Library(
-        name=GradleSpecifier.from_string(entry["maven"]),
+        name=GradleSpecifier.from_string(maven),
         url="https://maven.fabricmc.net",
     )
     v.libraries.append(intermediary_lib)
diff --git a/meta/run/update_fabric.py b/meta/run/update_fabric.py
index e0c1d819c9..43a27e146c 100755
--- a/meta/run/update_fabric.py
+++ b/meta/run/update_fabric.py
@@ -14,6 +14,7 @@ from meta.common import (
     default_session,
 )
 from meta.common.fabric import (
+    BROKEN_INTERMEDIARIES,
     JARS_DIR,
     INSTALLER_INFO_DIR,
     META_DIR,
@@ -70,7 +71,7 @@ def get_binary_file(path, url):
             f.write(chunk)
 
 
-def compute_jar_file(path, url):
+def fetch_release_time(path, url):
     # These two approaches should result in the same metadata, except for the timestamp which might be a few minutes
     # off for the fallback method
     try:
@@ -91,18 +92,25 @@ def compute_jar_file(path, url):
                 if tstamp_new > tstamp:
                     tstamp = tstamp_new
 
-    data = FabricJarInfo(release_time=tstamp)
-    data.write(path + ".json")
+    return tstamp
 
 
 def compute_jar_file_concurrent(it):
-    print(f"Processing {it['version']} ")
-    jar_maven_url = get_maven_url(it["maven"], "https://maven.fabricmc.net/", ".jar")
-    compute_jar_file(
-        os.path.join(UPSTREAM_DIR, JARS_DIR, transform_maven_key(it["maven"])),
-        jar_maven_url,
-    )
-    print(f"Processing {it['version']} Done")
+    print(f"Processing {it['maven']} ")
+    path = os.path.join(UPSTREAM_DIR, JARS_DIR, transform_maven_key(it["maven"]))
+    tstamp = BROKEN_INTERMEDIARIES.get(it["version"])
+    if not tstamp:
+        jar_maven_url = get_maven_url(
+            it["maven"], "https://maven.fabricmc.net/", ".jar"
+        )
+        tstamp = fetch_release_time(
+            path,
+            jar_maven_url,
+        )
+
+    data = FabricJarInfo(release_time=tstamp)
+    data.write(f"{path}.json")
+    print(f"Processing {it['maven']} Done")
 
 
 def get_json_file_concurrent(it):