From a979847280904a8ce7a17adbeb541646343f5d5c Mon Sep 17 00:00:00 2001
From: "Michael F." <michael.froewis@gmx.at>
Date: Wed, 13 Dec 2023 17:15:28 +0100
Subject: [PATCH] access config values via cli

---
 src/graphsenselib/config/cli.py    | 14 ++++++++++++++
 src/graphsenselib/utils/generic.py | 14 ++++++++++++++
 tests/utils/test_utils.py          | 16 ++++++++++++++++
 3 files changed, 44 insertions(+)

diff --git a/src/graphsenselib/config/cli.py b/src/graphsenselib/config/cli.py
index 3228d26..5603afe 100644
--- a/src/graphsenselib/config/cli.py
+++ b/src/graphsenselib/config/cli.py
@@ -1,5 +1,6 @@
 import click
 
+from ..utils import subkey_get
 from ..utils.console import console
 from .config import config as cfg
 
@@ -25,6 +26,19 @@ def show(json):
         console.print(cfg.text())
 
 
+@config.command("get")
+@click.option(
+    "--path",
+    help="path in the config file sep. is a dot (.)",
+    type=str,
+    required=True,
+    default=False,
+)
+def get(path):
+    """Prints the configuration used in the environment."""
+    console.print(subkey_get(cfg.dict(), path.split(".")))
+
+
 @config.command("path")
 def path():
     """Prints the path where the config is loaded from."""
diff --git a/src/graphsenselib/utils/generic.py b/src/graphsenselib/utils/generic.py
index 6af07a5..6a8e159 100644
--- a/src/graphsenselib/utils/generic.py
+++ b/src/graphsenselib/utils/generic.py
@@ -133,5 +133,19 @@ def subkey_exists(item, key_list) -> bool:
         return False
 
 
+def subkey_get(item, key_list) -> bool:
+    if item is None and len(key_list) > 0:
+        return item
+    if not key_list:
+        return item
+    h, *rest = key_list
+    if h.isdigit() and isinstance(item, list) and int(h) < len(item):
+        return subkey_get(item[int(h)], rest)
+    elif h in item:
+        return subkey_get(item[h], rest)
+    else:
+        return None
+
+
 def first_or_default(seq: Sequence[object], pred, default=None):
     return next(filter(pred, seq), default)
diff --git a/tests/utils/test_utils.py b/tests/utils/test_utils.py
index 8afd589..6397c80 100644
--- a/tests/utils/test_utils.py
+++ b/tests/utils/test_utils.py
@@ -7,6 +7,7 @@
     remove_prefix,
     strip_0x,
     subkey_exists,
+    subkey_get,
     to_int,
 )
 from graphsenselib.utils.errorhandling import CrashRecoverer
@@ -97,6 +98,21 @@ def test_subkey_exists():
     assert subkey_exists({"abc": {"cbd": None}}, ["abc", "cbd"]) is True
 
 
+def test_subkey_get():
+    assert subkey_get({}, ["abc"]) is None
+    assert subkey_get({"abc": None}, ["abc"]) is None
+    assert subkey_get({"abc": []}, ["abc", "cbd"]) is None
+    assert subkey_get({"abc": {"cbd": 1}}, ["abc", "cbd"]) == 1
+    assert subkey_get({"abc": {"cbd": "string"}}, ["abc", "cbd"]) == "string"
+    assert (
+        subkey_get({"abc": {"cbd": ["a", "b"], "bbb": [1, 2, 3]}}, ["abc", "cbd", "1"])
+        == "b"
+    )
+    assert subkey_get(
+        {"abc": {"cbd": ["a", "b"], "bbb": [1, 2, 3]}}, ["abc", "bbb"]
+    ) == [1, 2, 3]
+
+
 def test_first_or_default():
     assert first_or_default([1, 2, 3], lambda x: x > 2, default=10) == 3
     assert first_or_default([1, 2, 3], lambda x: x > 5, default=10) == 10