Added EInk Bonnet Event Calendar

EInk_Bonnet_Event_Calendar/event_calendar.py

@@ -0,0 +1,277 @@
+from __future__ import print_function
+from datetime import datetime
+import time
+import pickle
+import os.path
+from googleapiclient.discovery import build
+from google_auth_oauthlib.flow import InstalledAppFlow
+from google.auth.transport.requests import Request
+import textwrap
+import digitalio
+import busio
+import board
+from PIL import Image, ImageDraw, ImageFont
+from adafruit_epd.epd import Adafruit_EPD
+from adafruit_epd.ssd1675 import Adafruit_SSD1675
+
+spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
+ecs = digitalio.DigitalInOut(board.CE0)
+dc = digitalio.DigitalInOut(board.D22)
+rst = digitalio.DigitalInOut(board.D27)
+busy = digitalio.DigitalInOut(board.D17)
+up_button = digitalio.DigitalInOut(board.D5)
+up_button.switch_to_input()
+down_button = digitalio.DigitalInOut(board.D6)
+down_button.switch_to_input()
+
+# If modifying these scopes, delete the file token.pickle.
+SCOPES = ["https://www.googleapis.com/auth/calendar.readonly"]
+
+# Check for new/deleted events every 10 seconds
+QUERY_DELAY = 10  # Time in seconds to delay between querying the Google Calendar API
+MAX_EVENTS_PER_CAL = 5
+MAX_LINES = 2
+DEBOUNCE_DELAY = 0.3
+
+# Initialize the Display
+display = Adafruit_SSD1675(
+    122, 250, spi, cs_pin=ecs, dc_pin=dc, sramcs_pin=None, rst_pin=rst, busy_pin=busy,
+)
+
+display.rotation = 3
+
+# RGB Colors
+WHITE = (255, 255, 255)
+BLACK = (0, 0, 0)
+
+creds = None
+# The file token.pickle stores the user's access and refresh tokens, and is
+# created automatically when the authorization flow completes for the first
+# time.
+if os.path.exists("token.pickle"):
+    with open("token.pickle", "rb") as token:
+        creds = pickle.load(token)
+# If there are no (valid) credentials available, let the user log in.
+if not creds or not creds.valid:
+    if creds and creds.expired and creds.refresh_token:
+        creds.refresh(Request())
+    else:
+        flow = InstalledAppFlow.from_client_secrets_file("credentials.json", SCOPES)
+        creds = flow.run_console()
+    # Save the credentials for the next run
+    with open("token.pickle", "wb") as token:
+        pickle.dump(creds, token)
+
+service = build("calendar", "v3", credentials=creds)
+
+current_event_id = None
+last_check = None
+events = []
+
+
+def display_event(event_id):
+    event_index = search_id(event_id)
+    if event_index is None:
+        if len(events) > 0:
+            # Event was probably deleted while we were updating
+            event_index = 0
+            event = events[0]
+        else:
+            event = None
+    else:
+        event = events[event_index]
+
+    current_time = get_current_time()
+    display.fill(Adafruit_EPD.WHITE)
+    image = Image.new("RGB", (display.width, display.height), color=WHITE)
+    draw = ImageDraw.Draw(image)
+    event_font = ImageFont.truetype(
+        "/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", 24
+    )
+    time_font = ImageFont.truetype(
+        "/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf", 18
+    )
+    next_event_font = ImageFont.truetype(
+        "/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf", 16
+    )
+
+    # Draw Time
+    current_time = get_current_time()
+    (font_width, font_height) = time_font.getsize(current_time)
+    draw.text(
+        (display.width - font_width - 2, 2), current_time, font=time_font, fill=BLACK,
+    )
+
+    if event is None:
+        text = "No events found"
+        (font_width, font_height) = event_font.getsize(text)
+        draw.text(
+            (
+                display.width // 2 - font_width // 2,
+                display.height // 2 - font_height // 2,
+            ),
+            text,
+            font=event_font,
+            fill=BLACK,
+        )
+    else:
+        how_long = format_interval(
+            event["start"].get("dateTime", event["start"].get("date"))
+        )
+        draw.text(
+            (2, 2), how_long, font=time_font, fill=BLACK,
+        )
+
+        (font_width, font_height) = event_font.getsize(event["summary"])
+        lines = textwrap.wrap(event["summary"], width=20)
+        for line_index, line in enumerate(lines):
+            if line_index < MAX_LINES:
+                draw.text(
+                    (2, line_index * font_height + 22),
+                    line,
+                    font=event_font,
+                    fill=BLACK,
+                )
+
+        # Draw Next Event if there is one
+        if event_index < len(events) - 1:
+            next_event = events[event_index + 1]
+            next_time = format_event_date(
+                next_event["start"].get("dateTime", next_event["start"].get("date"))
+            )
+            next_item = "Then " + next_time + ": "
+            (font_width, font_height) = next_event_font.getsize(next_item)
+            draw.text(
+                (2, display.height - font_height * 2 - 8),
+                next_item,
+                font=next_event_font,
+                fill=BLACK,
+            )
+            draw.text(
+                (2, display.height - font_height - 2),
+                next_event["summary"],
+                font=next_event_font,
+                fill=BLACK,
+            )
+
+    display.image(image)
+    display.display()
+
+
+def format_event_date(datestr):
+    event_date = datetime.fromisoformat(datestr)
+    # If the same day, just return time
+    if event_date.date() == datetime.now().date():
+        return event_date.strftime("%I:%M %p")
+    # If a future date, return date and time
+    return event_date.strftime("%m/%d/%y %I:%M %p")
+
+
+def format_interval(datestr):
+    event_date = datetime.fromisoformat(datestr).replace(tzinfo=None)
+    delta = event_date - datetime.now()
+    # if < 60 minutes, return minutes
+    if delta.days < 0:
+        return "Now:"
+    if not delta.days and delta.seconds < 3600:
+        value = round(delta.seconds / 60)
+        return "In {} minute{}:".format(value, "s" if value > 1 else "")
+    # if < 24 hours return hours
+    if not delta.days:
+        value = round(delta.seconds / 3600)
+        return "In {} hour{}:".format(value, "s" if value > 1 else "")
+    return "In {} day{}:".format(delta.days, "s" if delta.days > 1 else "")
+
+
+def search_id(event_id):
+    if event_id is not None:
+        for index, event in enumerate(events):
+            if event["id"] == event_id:
+                return index
+    return None
+
+
+def get_current_time():
+    now = datetime.now()
+    return now.strftime("%I:%M %p")
+
+
+current_time = get_current_time()
+
+
+def get_events(calendar_id):
+    print("Fetching Events for {}".format(calendar_id))
+    page_token = None
+    events = (
+        service.events()
+        .list(
+            calendarId=calendar_id,
+            timeMin=now,
+            maxResults=MAX_EVENTS_PER_CAL,
+            singleEvents=True,
+            orderBy="startTime",
+        )
+        .execute()
+    )
+    return events.get("items", [])
+
+
+def get_all_calendar_ids():
+    page_token = None
+    calendar_ids = []
+    while True:
+        print("Fetching Calendar IDs")
+        calendar_list = service.calendarList().list(pageToken=page_token).execute()
+        for calendar_list_entry in calendar_list["items"]:
+            calendar_ids.append(calendar_list_entry["id"])
+        page_token = calendar_list.get("nextPageToken")
+        if not page_token:
+            break
+    return calendar_ids
+
+
+while True:
+    last_event_id = current_event_id
+    last_time = current_time
+
+    if last_check is None or time.monotonic() >= last_check + QUERY_DELAY:
+        # Call the Calendar API
+        now = datetime.utcnow().isoformat() + "Z"
+        calendar_ids = get_all_calendar_ids()
+        events = []
+        for calendar_id in calendar_ids:
+            events += get_events(calendar_id)
+
+        # Sort Events by Start Time
+        events = sorted(
+            events, key=lambda k: k["start"].get("dateTime", k["start"].get("date"))
+        )
+        last_check = time.monotonic()
+
+        # Update the current time
+        current_time = get_current_time()
+
+    if not events:
+        current_event_id = None
+        current_index = None
+    else:
+        if current_event_id is None:
+            current_index = 0
+        else:
+            current_index = search_id(current_event_id)
+
+        if current_index is not None:
+            # Check for Button Presses
+            if up_button.value != down_button.value:
+                if not up_button.value and current_index < len(events) - 1:
+                    current_index += 1
+                    time.sleep(DEBOUNCE_DELAY)
+                if not down_button.value and current_index > 0:
+                    current_index -= 1
+                    time.sleep(DEBOUNCE_DELAY)
+
+            current_event_id = events[current_index]["id"]
+        else:
+            current_event_id = None
+    if current_event_id != last_event_id or current_time != last_time:
+        display_event(current_event_id)