feat: add multi-chat routing and bill-specific dashboard countdown

tests/test_config.py

@@ -7,8 +7,7 @@ from blackout_notifier.config import Config, ConfigurationError
 REQUIRED = {
     "BARGHEMAN_TOKEN": "bargheman",
     "EITAAYAR_TOKEN": "eitaayar",
-    "CHAT_ID": "chat",
-    "BILL_IDS": " 123,456,123 ,, ",
+    "BILL_CHAT_MAP": " 123:chat-a,456:chat-b,123:chat-c,123:chat-a ,, ",
 }
 
 
@@ -17,13 +16,17 @@ def do_not_load_project_dotenv(monkeypatch: pytest.MonkeyPatch) -> None:
     monkeypatch.setattr("blackout_notifier.config.load_dotenv", lambda **_: None)
 
 
-def test_config_parses_and_deduplicates_bill_ids(monkeypatch: pytest.MonkeyPatch) -> None:
+def test_config_parses_and_deduplicates_bill_routes(monkeypatch: pytest.MonkeyPatch) -> None:
     for name, value in REQUIRED.items():
         monkeypatch.setenv(name, value)
 
     config = Config.from_env()
 
     assert config.bill_ids == ("123", "456")
+    assert dict(config.bill_chat_ids) == {
+        "123": ("chat-a", "chat-c"),
+        "456": ("chat-b",),
+    }
     assert str(config.state_file) == "state/outages.json"
     assert config.lookahead_days == 5
 
@@ -40,12 +43,39 @@ def test_config_reports_all_missing_required_values(monkeypatch: pytest.MonkeyPa
 def test_config_rejects_non_decimal_bill_ids(monkeypatch: pytest.MonkeyPatch) -> None:
     for name, value in REQUIRED.items():
         monkeypatch.setenv(name, value)
-    monkeypatch.setenv("BILL_IDS", "123,761/pe9314604429")
+    monkeypatch.setenv("BILL_CHAT_MAP", "123:chat-a,761/pe9314604429:chat-b")
 
-    with pytest.raises(ConfigurationError, match="decimal IDs"):
+    with pytest.raises(ConfigurationError, match="bill IDs must be decimal"):
         Config.from_env()
 
 
+def test_config_rejects_malformed_routes(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    for name, value in REQUIRED.items():
+        monkeypatch.setenv(name, value)
+
+    monkeypatch.setenv("BILL_CHAT_MAP", "123")
+    with pytest.raises(ConfigurationError, match="BILL_ID:CHAT_ID"):
+        Config.from_env()
+
+def test_legacy_single_chat_configuration_is_still_supported(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    monkeypatch.setenv("BARGHEMAN_TOKEN", "bargheman")
+    monkeypatch.setenv("EITAAYAR_TOKEN", "eitaayar")
+    monkeypatch.setenv("CHAT_ID", "legacy-chat")
+    monkeypatch.setenv("BILL_IDS", "123,456,123")
+    monkeypatch.delenv("BILL_CHAT_MAP", raising=False)
+
+    config = Config.from_env()
+
+    assert dict(config.bill_chat_ids) == {
+        "123": ("legacy-chat",),
+        "456": ("legacy-chat",),
+    }
+
+
 def test_config_validates_numeric_ranges(monkeypatch: pytest.MonkeyPatch) -> None:
     for name, value in REQUIRED.items():
         monkeypatch.setenv(name, value)