From 08617722a40d8b3c849c3c37efaa79ec61a51414 Mon Sep 17 00:00:00 2001
From: Anri Dellal <anridellal@gmail.com>
Date: Wed, 31 Mar 2021 14:12:15 +0300
Subject: [PATCH] init: Hide unsupported UIs (MR 2043)

Hides user interfaces which require GPU acceleration
for unsupported devices. Device support is identified
by deviceinfo property `deviceinfo_gpu_accelerated`.
UI which has GPU acceleration as requirement,
must have `pmb:gpu-accel` in APKBUILD's options.
---
 pmb/config/__init__.py |  1 +
 pmb/config/init.py     | 23 ++++++++++++++++++++---
 2 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/pmb/config/__init__.py b/pmb/config/__init__.py
index 87f473ed..cff80693 100644
--- a/pmb/config/__init__.py
+++ b/pmb/config/__init__.py
@@ -529,6 +529,7 @@ apkbuild_custom_valid_options = [
     "pmb:kconfigcheck-containers",
     "pmb:kconfigcheck-nftables",
     "pmb:cross-native",
+    "pmb:gpu-accel",
     "pmb:strict",
 ]
 
diff --git a/pmb/config/init.py b/pmb/config/init.py
index f2c45c94..66cb0735 100644
--- a/pmb/config/init.py
+++ b/pmb/config/init.py
@@ -114,12 +114,29 @@ def ask_for_channel(args):
 def ask_for_ui(args, device):
     info = pmb.parse.deviceinfo(args, device)
     ui_list = pmb.helpers.ui.list(args, info["arch"])
-    logging.info("Available user interfaces (" +
-                 str(len(ui_list) - 1) + "): ")
+    hidden_ui_count = 0
+    device_is_accelerated = info.get("gpu_accelerated") == "true"
+    if not device_is_accelerated:
+        for i in reversed(range(len(ui_list))):
+            pkgname = f"postmarketos-ui-{ui_list[i][0]}"
+            apkbuild = pmb.helpers.pmaports.get(args, pkgname,
+                                                subpackages=False,
+                                                must_exist=False)
+            if apkbuild and "pmb:gpu-accel" in apkbuild["options"]:
+                ui_list.pop(i)
+                hidden_ui_count += 1
+
+    logging.info(f"Available user interfaces ({len(ui_list) - 1}): ")
     ui_completion_list = []
     for ui in ui_list:
-        logging.info("* " + ui[0] + ": " + ui[1])
+        logging.info(f"* {ui[0]}: {ui[1]}")
         ui_completion_list.append(ui[0])
+    if hidden_ui_count > 0:
+        logging.info(f"NOTE: {hidden_ui_count} user interfaces are not"
+                     " available. If device supports GPU acceleration,"
+                     " set \"deviceinfo_gpu_accelerated\" to make UIs"
+                     " available. See: <https://wiki.postmarketos.org/wiki/"
+                     "Deviceinfo_reference")
     while True:
         ret = pmb.helpers.cli.ask(args, "User interface", None, args.ui, True,
                                   complete=ui_completion_list)