✨ feat(constants): defines colors and symbols as constants

This commit introduces the constants module. There are redundant
uses of many strings and symbols in the entire code base and this
module puts them all in one place such that all existing and future
code can refer these.

riocli/constants/__init__.py

@@ -0,0 +1,18 @@
+# Copyright 2023 Rapyuta Robotics
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from riocli.constants.colors import Colors
+from riocli.constants.symbols import Symbols
+
+__all__ = [Colors, Symbols]

riocli/constants/colors.py

@@ -0,0 +1,41 @@
+# Copyright 2023 Rapyuta Robotics
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from enum import Enum
+
+
+class Colors(str, Enum):
+    """
+    Colors is a str enum based on the colors supported by click.
+    https://github.com/pallets/click/blob/main/examples/colors/colors.py
+    """
+    def __str__(self):
+        return str(self.value).lower()
+
+    BLACK = 'black'
+    RED = 'red'
+    GREEN = 'green'
+    YELLOW = 'yellow'
+    BLUE = 'blue'
+    MAGENTA = 'magenta'
+    CYAN = 'cyan'
+    WHITE = 'white'
+    BRIGHT_BLACK = 'bright_black'
+    BRIGHT_RED = 'bright_red'
+    BRIGHT_GREEN = 'bright_green'
+    BRIGHT_YELLOW = 'bright_yellow'
+    BRIGHT_BLUE = 'bright_blue'
+    BRIGHT_MAGENTA = 'bright_magenta'
+    BRIGHT_CYAN = 'bright_cyan'
+    BRIGHT_WHITE = 'bright_white'

riocli/constants/symbols.py

@@ -0,0 +1,20 @@
+# Copyright 2023 Rapyuta Robotics
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+class Symbols:
+    INFO = '🛈'
+    ERROR = '✘'
+    SUCCESS = '✔'
+    WARNING = '⚠'
+    WAITING = '⧖'