From e89e6ca32ec07079f8d68d00b42f46e3e9493830 Mon Sep 17 00:00:00 2001
From: matejcik <ja@matejcik.cz>
Date: Tue, 4 Dec 2018 17:19:51 +0100
Subject: [PATCH] build: add script for fetching required release versions

---
 helper-scripts/bump-required-fw-versions.py | 57 +++++++++++++++++++++
 trezorlib/__init__.py                       |  4 +-
 2 files changed, 59 insertions(+), 2 deletions(-)
 create mode 100755 helper-scripts/bump-required-fw-versions.py

diff --git a/helper-scripts/bump-required-fw-versions.py b/helper-scripts/bump-required-fw-versions.py
new file mode 100755
index 000000000..f968f1a53
--- /dev/null
+++ b/helper-scripts/bump-required-fw-versions.py
@@ -0,0 +1,57 @@
+#!/usr/bin/env python3
+import os
+import requests
+
+RELEASES_URL = "https://beta-wallet.trezor.io/data/firmware/{}/releases.json"
+MODELS = ("1", "T")
+
+FILENAME = os.path.join(os.path.dirname(__file__), "..", "trezorlib", "__init__.py")
+START_LINE = "MINIMUM_FIRMWARE_VERSION = {\n"
+END_LINE = "}\n"
+
+
+def version_str(vtuple):
+    return ".".join(map(str, vtuple))
+
+
+def fetch_releases(model):
+    version = model
+    if model == "T":
+        version = "2"
+
+    url = RELEASES_URL.format(version)
+    releases = requests.get(url).json()
+    releases.sort(key=lambda r: r["version"], reverse=True)
+    return releases
+
+
+def find_latest_required(model):
+    releases = fetch_releases(model)
+    return next(r for r in releases if r["required"])
+
+
+with open(FILENAME, "r+") as f:
+    output = []
+    line = None
+    # copy up to & incl START_LINE
+    while line != START_LINE:
+        line = next(f)
+        output.append(line)
+    # throw away until END_LINE
+    while line != END_LINE:
+        line = next(f)
+    # append models
+    for model in MODELS:
+        rel = find_latest_required(model)
+        version_tuple = tuple(rel["version"])
+        line = f'    "{model}": {version_tuple!r},\n'
+        output.append(line)
+    output.append(END_LINE)
+    # finish reading file
+    for line in f:
+        output.append(line)
+
+    f.seek(0)
+    f.truncate(0)
+    for line in output:
+        f.write(line)
diff --git a/trezorlib/__init__.py b/trezorlib/__init__.py
index 3cf120afa..2fe5fe7fc 100644
--- a/trezorlib/__init__.py
+++ b/trezorlib/__init__.py
@@ -2,7 +2,7 @@ __version__ = "0.11.0"
 
 # fmt: off
 MINIMUM_FIRMWARE_VERSION = {
-    "1": (1, 6, 3),
-    "T": (2, 0, 10),
+    "1": (1, 6, 1),
+    "T": (2, 0, 5),
 }
 # fmt: on