refactor: extract shared settings_core and Flask route logic to domain/services

tests/test_settings_service.py

@@ -0,0 +1,94 @@
+"""Tests for webui/services/settings_service.py — form→settings mapping."""
+
+from collections import OrderedDict
+
+from abogen.webui.services.settings_service import apply_form_to_settings
+
+
+def _form(**kwargs: str | None) -> dict[str, str | None]:
+    return OrderedDict(kwargs)
+
+
+def _base() -> dict:
+    return {
+        "language": "en",
+        "default_speaker": "",
+        "default_voice": "",
+        "supertonic_total_steps": 5,
+        "supertonic_speed": 1.0,
+        "output_format": "mp3",
+        "subtitle_mode": "Disabled",
+        "subtitle_format": "srt",
+        "save_mode": "save_next_to_input",
+        "replace_single_newlines": False,
+        "use_gpu": False,
+        "save_chapters_separately": False,
+        "merge_chapters_at_end": True,
+        "save_as_project": False,
+        "separate_chapters_format": "wav",
+        "silence_between_chapters": 2.0,
+        "chapter_intro_delay": 0.5,
+        "read_title_intro": False,
+        "read_closing_outro": True,
+        "normalize_chapter_opening_caps": True,
+        "auto_prefix_chapter_titles": True,
+        "max_subtitle_words": 50,
+        "chunk_level": "paragraph",
+        "generate_epub3": False,
+        "speaker_analysis_threshold": 15,
+        "integrations": {},
+    }
+
+
+class TestApplyFormToSettings:
+    def test_general_fields(self):
+        settings = _base()
+        form = _form(language="fr", default_speaker="af_heart", output_format="wav")
+        apply_form_to_settings(settings, form)
+        assert settings["language"] == "fr"
+        assert settings["default_speaker"] == "af_heart"
+        assert settings["output_format"] == "wav"
+
+    def test_numeric_fields(self):
+        settings = _base()
+        form = _form(supertonic_total_steps="10", supertonic_speed="1.5", max_subtitle_words="30")
+        apply_form_to_settings(settings, form)
+        assert settings["supertonic_total_steps"] == 10
+        assert settings["supertonic_speed"] == 1.5
+        assert settings["max_subtitle_words"] == 30
+
+    def test_numeric_clamping(self):
+        settings = _base()
+        form = _form(supertonic_total_steps="100", supertonic_speed="5.0", max_subtitle_words="0")
+        apply_form_to_settings(settings, form)
+        assert settings["supertonic_total_steps"] == 15
+        assert settings["supertonic_speed"] == 2.0
+        assert settings["max_subtitle_words"] == 1
+
+    def test_boolean_checkboxes(self):
+        settings = _base()
+        form = _form(use_gpu="on", save_chapters_separately="on")
+        apply_form_to_settings(settings, form)
+        assert settings["use_gpu"] is True
+        assert settings["save_chapters_separately"] is True
+
+    def test_default_values_preserved(self):
+        settings = _base()
+        form = _form()
+        apply_form_to_settings(settings, form)
+        assert settings["silence_between_chapters"] == 2.0
+        assert settings["chunk_level"] == "paragraph"
+
+    def test_empty_form_keeps_general_defaults(self):
+        settings = _base()
+        apply_form_to_settings(settings, _form())
+        # General fields should stay at their base values
+        assert settings["language"] == "en"
+        assert settings["output_format"] == "mp3"
+        assert settings["chunk_level"] == "paragraph"
+        assert settings["silence_between_chapters"] == 2.0
+
+    def test_language_whitespace_trimmed(self):
+        settings = _base()
+        apply_form_to_settings(settings, _form(language="  de  "))
+        assert settings["language"] == "de"