Add border for bookings in the schedule image

[dantetemplar]

Current situation

No borders, so neighboring bookings merge

Implementation

• Try to use headless html rendering or svg
• Or just add borders in Pillow

Related code

repository.py:145

    async def form_schedule(self, start_of_week: datetime.date) -> bytes:
        xbase = 48  # origin for x
        ybase = 73  # origin for y
        xsize = 175.5  # length of the rect by x-axis
        ysize = 32  # length of the rect by x-axis

        # Create a new image using PIL
        image = Image.open("src/repositories/bookings/schedule.jpg")
        draw = ImageDraw.Draw(image)

        lightGray = (211, 211, 211)
        lightBlack = (48, 54, 59)
        red = (255, 0, 0)

        fontSimple = ImageFont.truetype("src/repositories/bookings/open_sans.ttf", size=14)

        bookings = await self.get_bookings_for_week(start_of_week)
        for booking in bookings:
            day = booking.time_start.weekday()

            ylength = count_duration(booking.time_start, booking.time_end)
            x0 = xbase + xsize * day
            y0 = ybase + int(ysize * ((booking.time_start.hour - 7) + (booking.time_start.minute / 60.0)))
            x1 = x0 + xsize
            y1 = y0 + 31.5 * ylength

            draw.rounded_rectangle((x0, y0, x1, y1), 2, fill=lightGray)
            participant = await self.get_participant(booking.participant_id)

            alias = participant.alias
            max_alias_length: int = 10
            if len(alias) > max_alias_length:
                alias = f"{alias[:max_alias_length]}..."

            caption = f"{alias} "

            # noinspection SqlAlchemyUnsafeQuery
            draw.text(
                (x0 + 2, (y0 + y1) / 2 - 9),
                text=f"{caption}{booking.time_start.strftime('%H:%M')}-{booking.time_end.strftime('%H:%M')}",
                fill=lightBlack,
                font=fontSimple,
            )

        today = datetime.date.today()
        weekday = today.weekday()

        current = datetime.datetime.now()
        current_week = False
        if start_of_week <= current.date() <= start_of_week + timedelta(days=6):
            current_week = True

        # Drawing red line
        if 6 < current.hour < 23 and current_week:
            now_x0 = xbase + xsize * weekday
            now_y0 = ybase + int(ysize * ((current.hour - 7) + (current.minute / 60)))
            draw.rounded_rectangle((now_x0, now_y0, now_x0 + xsize, now_y0 + 2), 2, fill=red)

        await self.draw_week_numbers(draw, await self.is_start_of_week(start_of_week))
        await self.draw_month_and_year(draw, current_week)
        image_stream = io.BytesIO()
        image.save(image_stream, format="png")
        val = image_stream.getvalue()
        image_stream.close()
        return val