Add support for caldav, icloud, ics calendars

.editorconfig

@@ -0,0 +1,20 @@
+# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+charset = utf-8
+
+# 4 space indentation
+[*.{py,java,r,R}]
+indent_style = space
+indent_size = 4
+
+[*.md]
+trim_trailing_whitespace = false
+charset = utf-8

.gitignore

@@ -8,8 +8,11 @@ env.sh
 *.pickle
 credentials*
 *.json
+!.vscode/*
 *.bin
 test.svg
 *.xml
 venv
-cache_
+cache_
+.venv
+.env

.vscode/extensions.json

@@ -0,0 +1,13 @@
+{
+	// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.
+	// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp
+
+	// List of extensions which should be recommended for users of this workspace.
+	"recommendations": [
+		"EditorConfig.EditorConfig", "ms-python.python"
+	],
+	// List of extensions recommended by VS Code that should not be recommended for users of this workspace.
+	"unwantedRecommendations": [
+
+	]
+}

.vscode/launch.json

@@ -0,0 +1,19 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Python: Current File",
+            "type": "python",
+            "request": "launch",
+            "program": "${file}",
+            "console": "integratedTerminal",
+            "justMyCode": true,
+            "envFile": "${workspaceFolder}/.env",
+            "preLaunchTask": "Source Shell"
+
+        }
+    ]
+}

.vscode/settings.json

@@ -0,0 +1,7 @@
+{
+    "python.defaultInterpreterPath": ".venv/bin/python",
+    "python.envFile": "${workspaceFolder}/env.sh",
+    "python.terminal.activateEnvironment": true,
+    "python.linting.flake8Enabled": true,
+    "python.linting.enabled": true
+}

.vscode/tasks.json

@@ -0,0 +1,12 @@
+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "Source Shell",
+            "type": "shell",
+            "command": "source env.sh; printenv > ${workspaceFolder}/.env;"
+        }
+    ]
+}

CHANGELOG.md

@@ -1,47 +1,53 @@
+## 2022-11-25
+* ICS and CalDav calendar support added by [anthonyscorrea](https://github.com/mendhak/waveshare-epaper-display/pull/43)
+* Moved pip package list into requirements.txt.  The package versions are fixed, it's simpler to install, and better stability.
+* Refactored the calendar code into providers and simplified the code for better reuse
+* Added instructions and VSCode integration for running and debugging the project locally
+
 ## 2022-10-04
-* Bugfix: an `&` ampersand in event title would cause image generation to crash. 
+* Bugfix: an `&` ampersand in event title would cause image generation to crash.
 
 ## 2022-04-21
-* By default, past calendar events will disappear from the list. 
+* By default, past calendar events will disappear from the list.
 * Added option to show all past events from today, `CALENDAR_INCLUDE_PAST_EVENTS_FOR_TODAY=1`
 
 ## 2022-04-13
 * Add new layouts for the user to choose from. Set the value `export SCREEN_LAYOUT=1` to 2, 3, 4...
-* Layouts contributed by @feh123 and @jmason 
-* Added the ability to have custom SVGs added onto the rendered output.  Done via `screen-custom-get.py` and `screen-custom.svg`.  
+* Layouts contributed by @feh123 and @jmason
+* Added the ability to have custom SVGs added onto the rendered output.  Done via `screen-custom-get.py` and `screen-custom.svg`.
 * Bugfix: Multi day events will now show start and end days. eg, "Monday - Wednesday"
 
 ## 2022-04-10
-* Use friendly day names for calendar entries, like "Today", "Tonight", "Tomorrow".  
-* If the calendar entry is within the next 6 days use the day name "Monday" "Tuesday", else use "Mon Apr 18". 
+* Use friendly day names for calendar entries, like "Today", "Tonight", "Tomorrow".
+* If the calendar entry is within the next 6 days use the day name "Monday" "Tuesday", else use "Mon Apr 18".
 
 ## 2022-04-08
 * Add Met Éireann weather and alert provider by [@jmason](https://github.com/mendhak/waveshare-epaper-display/pull/34)
 
 ## 2022-03-06
 * Add weather.gov as a weather and alert provider
 * Add VisualCrossing instructions to the README
-* Rename the weather and alert and calendar cache files to use a `cache_` prefix.  A little consistency. 
+* Rename the weather and alert and calendar cache files to use a `cache_` prefix.  A little consistency.
 
 ## 2022-01-07
 
 * Add cryptography==36.0.0 to setup. It's used by msal, but version 36.0.1 from piwheels produces [illegal instruction](https://github.com/piwheels/packages/issues/273)
-* Add gsfonts to setup.  It contains Nimbus fonts required by the SVG.  
+* Add gsfonts to setup.  It contains Nimbus fonts required by the SVG.
 
 ## 2021-12-29
 
-* Updated instructions for Raspberry Pi OS Bullseye.  Many dependencies stopped working, fixed it now. 
-* Removed some dependencies that aren't needed anymore! BCM not needed.  WiringPi is deprecated.  LibJpeg doesn't look needed.  
-* Replace Inkscape with CairoSVG. Inkscape broke some commandline args, and CairoSVG seems better suited for commandline anyway. 
-* Updated Google Calendar instructions, it's simpler for now, until Google break their URLs again. 
+* Updated instructions for Raspberry Pi OS Bullseye.  Many dependencies stopped working, fixed it now.
+* Removed some dependencies that aren't needed anymore! BCM not needed.  WiringPi is deprecated.  LibJpeg doesn't look needed.
+* Replace Inkscape with CairoSVG. Inkscape broke some commandline args, and CairoSVG seems better suited for commandline anyway.
+* Updated Google Calendar instructions, it's simpler for now, until Google break their URLs again.
 
 ## 2021-10-29
 
-* Bug fix - Outlook calendar entries will now show in local time, instead of UTC. 
+* Bug fix - Outlook calendar entries will now show in local time, instead of UTC.
 
 ## 2021-08-13
 
-* Calendar entries will include all events from today, even if they are past.   
+* Calendar entries will include all events from today, even if they are past.
 
 ## 2021-08-10
 
@@ -67,7 +73,7 @@
 
 ## Before all that
 
-* Basic weather, time and event dashboard.  
+* Basic weather, time and event dashboard.
 * There were a few weather providers hardcoded
 * There was PiHole stats but I removed it
 * There was TFL train times but I removed it