Try fixing the problem

Fixes #35

.dockerignore

@@ -1 +1,5 @@
 src/web/static/*
+.venv
+.githooks
+.vscode
+node_modules

CHANGELOG.md

@@ -1,3 +1,37 @@
+## Unreleased
+
+* New
+  * When adding session, pre-select game with the last session
+  * Date and time input fields now have proper pickers
+
+## 0.2.4 / 2023-01-16 19:39+01:00
+
+* Fixed
+  * When filtering by game, the "Filtering by (...)" text would erroneously list an unrelated platform
+  * Playtime graph would display timeline backwards
+  * Playtime graph with many dates would overlap (https://git.kucharczyk.xyz/lukas/timetracker/issues/34)
+  * Manually added times (= without end timestamp) would make graphs look ugly and noisy (https://git.kucharczyk.xyz/lukas/timetracker/issues/35)
+
+## 0.2.3 / 2023-01-15 23:13+01:00
+
+* Allow filtering by platform and game on session list (https://git.kucharczyk.xyz/lukas/timetracker/issues/32)
+* Order session by newest as preparation for https://git.kucharczyk.xyz/lukas/timetracker/issues/33
+
+## 0.2.2 / 2023-01-15 17:59+01:00
+
+* Display playtime graph on session list (https://git.kucharczyk.xyz/lukas/timetracker/issues/29)
+* Fix error when showing session list with no sessions (https://git.kucharczyk.xyz/lukas/timetracker/issues/31)
+
+## 0.2.1 / 2023-01-13 16:53+01:00
+
+* List number of sessions when filtering on session list
+* Start sessions of last purchase from list (https://git.kucharczyk.xyz/lukas/timetracker/issues/19)
+
+## 0.2.0 / 2023-01-09 22:42+01:00
+
+* Show playtime total on session list (https://git.kucharczyk.xyz/lukas/timetracker/issues/6)
+* Make formatting durations more robust, change default duration display to "X hours" (https://git.kucharczyk.xyz/lukas/timetracker/issues/26)
+
 ## 0.1.4 / 2023-01-08 15:45+01:00
 
 * Fix collectstaticfiles causing error when restarting container (https://git.kucharczyk.xyz/lukas/timetracker/issues/23)

Dockerfile

@@ -4,17 +4,25 @@ COPY . /app
 RUN npm install && \
     npx tailwindcss -i ./src/input.css -o ./src/web/tracker/static/base.css --minify
 
-FROM python:3.10.9-alpine
+FROM python:3.10.9-slim-bullseye
 
-ENV VERSION_NUMBER 0.1.4
+ENV VERSION_NUMBER 0.2.4
 ENV PROD 1
+ENV PYTHONUNBUFFERED=1
 
-RUN apk add \
+RUN apt update && \
+    apt install -y \
     bash \
     vim \
-    curl \
+    curl && \
-    caddy
+    apt install -y debian-keyring debian-archive-keyring apt-transport-https && \
-RUN adduser -D -u 1000 timetracker
+    curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' | gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg && \
+    curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' | tee /etc/apt/sources.list.d/caddy-stable.list && \
+    apt update && \
+    apt install caddy && \
+    rm -rf /var/lib/apt/lists/*
+
+RUN useradd -m --uid 1000 timetracker
 WORKDIR /home/timetracker/app
 COPY . /home/timetracker/app/
 RUN chown -R timetracker:timetracker /home/timetracker/app

Makefile

@@ -19,13 +19,13 @@ makemigrations:
 migrate: makemigrations
 	poetry run python src/web/manage.py migrate
 
-dev: migrate sethookdir
+dev: migrate
-	poetry run python src/web/manage.py runserver_plus
+	poetry run python src/web/manage.py runserver
 
 caddy:
 	caddy run --watch
 
-dev-prod: migrate collectstatic sethookdir
+dev-prod: migrate collectstatic
 	cd src/web/; PROD=1 poetry run python -m gunicorn --bind 0.0.0.0:8001 web.asgi:application -k uvicorn.workers.UvicornWorker
 
 dumptracker:
@@ -52,11 +52,8 @@ poetry.lock: pyproject.toml
 test: poetry.lock
 	poetry run pytest
 
-sethookdir:
-	git config core.hooksPath .githooks
-
 date:
-	python3 -c 'import datetime; from zoneinfo import ZoneInfo; print(datetime.datetime.isoformat(datetime.datetime.now(ZoneInfo("Europe/Prague")), timespec="minutes", sep=" "))'
+	poetry run python -c 'import datetime; from zoneinfo import ZoneInfo; print(datetime.datetime.isoformat(datetime.datetime.now(ZoneInfo("Europe/Prague")), timespec="minutes", sep=" "))'
 
 cleanstatic:
 	rm -r src/web/static/*

entrypoint.sh

@@ -10,4 +10,4 @@ poetry run python src/web/manage.py collectstatic --clear --no-input
 echo "Starting server"
 caddy start
 cd src/web || exit
-poetry run python -m gunicorn --bind 0.0.0.0:8001 web.asgi:application -k uvicorn.workers.UvicornWorker
+poetry run python -m gunicorn --bind 0.0.0.0:8001 web.asgi:application -k uvicorn.workers.UvicornWorker --access-logfile - --error-logfile -

poetry.lock

@@ -96,6 +96,81 @@ files = [
     {file = "colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44"},
 ]
 
+[[package]]
+name = "contourpy"
+version = "1.0.7"
+description = "Python library for calculating contours of 2D quadrilateral grids"
+category = "main"
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "contourpy-1.0.7-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:95c3acddf921944f241b6773b767f1cbce71d03307270e2d769fd584d5d1092d"},
+    {file = "contourpy-1.0.7-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:fc1464c97579da9f3ab16763c32e5c5d5bb5fa1ec7ce509a4ca6108b61b84fab"},
+    {file = "contourpy-1.0.7-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:8acf74b5d383414401926c1598ed77825cd530ac7b463ebc2e4f46638f56cce6"},
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+    {file = "contourpy-1.0.7-pp38-pypy38_pp73-win_amd64.whl", hash = "sha256:efe99298ba37e37787f6a2ea868265465410822f7bea163edcc1bd3903354ea9"},
+    {file = "contourpy-1.0.7-pp39-pypy39_pp73-macosx_10_9_x86_64.whl", hash = "sha256:a1e97b86f73715e8670ef45292d7cc033548266f07d54e2183ecb3c87598888f"},
+    {file = "contourpy-1.0.7-pp39-pypy39_pp73-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:cc331c13902d0f50845099434cd936d49d7a2ca76cb654b39691974cb1e4812d"},
+    {file = "contourpy-1.0.7-pp39-pypy39_pp73-manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:24847601071f740837aefb730e01bd169fbcaa610209779a78db7ebb6e6a7051"},
+    {file = "contourpy-1.0.7-pp39-pypy39_pp73-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:abf298af1e7ad44eeb93501e40eb5a67abbf93b5d90e468d01fc0c4451971afa"},
+    {file = "contourpy-1.0.7-pp39-pypy39_pp73-win_amd64.whl", hash = "sha256:64757f6460fc55d7e16ed4f1de193f362104285c667c112b50a804d482777edd"},
+    {file = "contourpy-1.0.7.tar.gz", hash = "sha256:d8165a088d31798b59e91117d1f5fc3df8168d8b48c4acc10fc0df0d0bdbcc5e"},
+]
+
+[package.dependencies]
+numpy = ">=1.16"
+
+[package.extras]
+bokeh = ["bokeh", "chromedriver", "selenium"]
+docs = ["furo", "sphinx-copybutton"]
+mypy = ["contourpy[bokeh]", "docutils-stubs", "mypy (==0.991)", "types-Pillow"]
+test = ["Pillow", "matplotlib", "pytest"]
+test-no-images = ["pytest"]
+
 [[package]]
 name = "cssbeautifier"
 version = "1.14.7"
@@ -112,6 +187,18 @@ editorconfig = ">=0.12.2"
 jsbeautifier = "*"
 six = ">=1.13.0"
 
+[[package]]
+name = "cycler"
+version = "0.11.0"
+description = "Composable style cycles"
+category = "main"
+optional = false
+python-versions = ">=3.6"
+files = [
+    {file = "cycler-0.11.0-py3-none-any.whl", hash = "sha256:3a27e95f763a428a739d2add979fa7494c912a32c17c4c38c4d5f082cad165a3"},
+    {file = "cycler-0.11.0.tar.gz", hash = "sha256:9c87405839a19696e837b3b818fed3f5f69f16f1eec1a1ad77e043dcea9c772f"},
+]
+
 [[package]]
 name = "django"
 version = "4.1.5"
@@ -215,6 +302,32 @@ files = [
 [package.extras]
 test = ["pytest (>=6)"]
 
+[[package]]
+name = "fonttools"
+version = "4.38.0"
+description = "Tools to manipulate font files"
+category = "main"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "fonttools-4.38.0-py3-none-any.whl", hash = "sha256:820466f43c8be8c3009aef8b87e785014133508f0de64ec469e4efb643ae54fb"},
+    {file = "fonttools-4.38.0.zip", hash = "sha256:2bb244009f9bf3fa100fc3ead6aeb99febe5985fa20afbfbaa2f8946c2fbdaf1"},
+]
+
+[package.extras]
+all = ["brotli (>=1.0.1)", "brotlicffi (>=0.8.0)", "fs (>=2.2.0,<3)", "lxml (>=4.0,<5)", "lz4 (>=1.7.4.2)", "matplotlib", "munkres", "scipy", "skia-pathops (>=0.5.0)", "sympy", "uharfbuzz (>=0.23.0)", "unicodedata2 (>=14.0.0)", "xattr", "zopfli (>=0.1.4)"]
+graphite = ["lz4 (>=1.7.4.2)"]
+interpolatable = ["munkres", "scipy"]
+lxml = ["lxml (>=4.0,<5)"]
+pathops = ["skia-pathops (>=0.5.0)"]
+plot = ["matplotlib"]
+repacker = ["uharfbuzz (>=0.23.0)"]
+symfont = ["sympy"]
+type1 = ["xattr"]
+ufo = ["fs (>=2.2.0,<3)"]
+unicode = ["unicodedata2 (>=14.0.0)"]
+woff = ["brotli (>=1.0.1)", "brotlicffi (>=0.8.0)", "zopfli (>=0.1.4)"]
+
 [[package]]
 name = "gunicorn"
 version = "20.1.0"
@@ -304,6 +417,24 @@ files = [
     {file = "iniconfig-1.1.1.tar.gz", hash = "sha256:bc3af051d7d14b2ee5ef9969666def0cd1a000e121eaea580d4a313df4b37f32"},
 ]
 
+[[package]]
+name = "isort"
+version = "5.11.4"
+description = "A Python utility / library to sort Python imports."
+category = "dev"
+optional = false
+python-versions = ">=3.7.0"
+files = [
+    {file = "isort-5.11.4-py3-none-any.whl", hash = "sha256:c033fd0edb91000a7f09527fe5c75321878f98322a77ddcc81adbd83724afb7b"},
+    {file = "isort-5.11.4.tar.gz", hash = "sha256:6db30c5ded9815d813932c04c2f85a360bcdd35fed496f4d8f35495ef0a261b6"},
+]
+
+[package.extras]
+colors = ["colorama (>=0.4.3,<0.5.0)"]
+pipfile-deprecated-finder = ["pipreqs", "requirementslib"]
+plugins = ["setuptools"]
+requirements-deprecated-finder = ["pip-api", "pipreqs"]
+
 [[package]]
 name = "jsbeautifier"
 version = "1.14.7"
@@ -319,6 +450,84 @@ files = [
 editorconfig = ">=0.12.2"
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 [[package]]
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 version = "2.1.1"
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 ]
 
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+    {file = "Pillow-9.4.0.tar.gz", hash = "sha256:a1c2d7780448eb93fbcc3789bf3916aa5720d942e37945f4056680317f1cd23e"},
+]
+
+[package.extras]
+docs = ["furo", "olefile", "sphinx (>=2.4)", "sphinx-copybutton", "sphinx-inline-tabs", "sphinx-issues (>=3.0.1)", "sphinx-removed-in", "sphinxext-opengraph"]
+tests = ["check-manifest", "coverage", "defusedxml", "markdown2", "olefile", "packaging", "pyroma", "pytest", "pytest-cov", "pytest-timeout"]
+
 [[package]]
 name = "platformdirs"
 version = "2.6.2"
@@ -488,6 +929,21 @@ files = [
 dev = ["pre-commit", "tox"]
 testing = ["pytest", "pytest-benchmark"]
 
+[[package]]
+name = "pyparsing"
+version = "3.0.9"
+description = "pyparsing module - Classes and methods to define and execute parsing grammars"
+category = "main"
+optional = false
+python-versions = ">=3.6.8"
+files = [
+    {file = "pyparsing-3.0.9-py3-none-any.whl", hash = "sha256:5026bae9a10eeaefb61dab2f09052b9f4307d44aee4eda64b309723d8d206bbc"},
+    {file = "pyparsing-3.0.9.tar.gz", hash = "sha256:2b020ecf7d21b687f219b71ecad3631f644a47f01403fa1d1036b0c6416d70fb"},
+]
+
+[package.extras]
+diagrams = ["jinja2", "railroad-diagrams"]
+
 [[package]]
 name = "pytest"
 version = "7.2.0"
@@ -512,6 +968,33 @@ tomli = {version = ">=1.0.0", markers = "python_version < \"3.11\""}
 [package.extras]
 testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.7.2)", "requests", "xmlschema"]
 
+[[package]]
+name = "python-dateutil"
+version = "2.8.2"
+description = "Extensions to the standard Python datetime module"
+category = "main"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7"
+files = [
+    {file = "python-dateutil-2.8.2.tar.gz", hash = "sha256:0123cacc1627ae19ddf3c27a5de5bd67ee4586fbdd6440d9748f8abb483d3e86"},
+    {file = "python_dateutil-2.8.2-py2.py3-none-any.whl", hash = "sha256:961d03dc3453ebbc59dbdea9e4e11c5651520a876d0f4db161e8674aae935da9"},
+]
+
+[package.dependencies]
+six = ">=1.5"
+
+[[package]]
+name = "pytz"
+version = "2022.7.1"
+description = "World timezone definitions, modern and historical"
+category = "main"
+optional = false
+python-versions = "*"
+files = [
+    {file = "pytz-2022.7.1-py2.py3-none-any.whl", hash = "sha256:78f4f37d8198e0627c5f1143240bb0206b8691d8d7ac6d78fee88b78733f8c4a"},
+    {file = "pytz-2022.7.1.tar.gz", hash = "sha256:01a0681c4b9684a28304615eba55d1ab31ae00bf68ec157ec3708a8182dbbcd0"},
+]
+
 [[package]]
 name = "pyyaml"
 version = "6.0"
@@ -681,7 +1164,7 @@ testing-integration = ["build[virtualenv]", "filelock (>=3.4.0)", "jaraco.envs (
 name = "six"
 version = "1.16.0"
 description = "Python 2 and 3 compatibility utilities"
-category = "dev"
+category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
 files = [
@@ -814,4 +1297,4 @@ testing = ["flake8 (<5)", "func-timeout", "jaraco.functools", "jaraco.itertools"
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.10"
-content-hash = "fd85e51c8fb99824a433b451c9712b7418c13688b9eb0e8ca6c51768f544e48f"
+content-hash = "bf02e951b8c14fbe6f2709b6df7f9664f99ad5fbf7195d8e7b18c8574d00e683"

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "timetracker"
-version = "0.1.4"
+version = "0.2.4"
 description = "A simple time tracker."
 authors = ["Lukáš Kucharczyk <lukas@kucharczyk.xyz>"]
 license = "GPL"
@@ -11,6 +11,8 @@ python = "^3.10"
 django = "^4.1.4"
 gunicorn = "^20.1.0"
 uvicorn = "^0.20.0"
+pandas = "^1.5.2"
+matplotlib = "^3.6.3"
 
 [tool.poetry.group.dev.dependencies]
 black = "^22.12.0"
@@ -21,6 +23,7 @@ django-extensions = "^3.2.1"
 werkzeug = "^2.2.2"
 djhtml = "^1.5.2"
 djlint = "^1.19.11"
+isort = "^5.11.4"
 
 [build-system]
 requires = ["poetry-core"]

src/input.css

@@ -14,7 +14,7 @@ textarea {
 
 #session-table {
   display: grid;
-  grid-template-columns: repeat(3, 2fr) 0.5fr 1fr;
+  grid-template-columns: 3fr 1fr repeat(2, 2fr) 0.5fr 1fr;
 }
 
 #button-container button {

src/web/common/util/plots.py

@@ -0,0 +1,91 @@
+import base64
+from datetime import datetime
+from io import BytesIO
+
+import matplotlib.pyplot as plt
+import matplotlib.dates as mdates
+import pandas as pd
+from django.db.models import F, IntegerField, QuerySet, Sum
+from django.db.models.functions import TruncDay
+from tracker.models import Session
+
+
+def key_value_to_value_value(data):
+    return {data["date"]: data["hours"]}
+
+
+def playtime_over_time_chart(queryset: QuerySet = Session.objects):
+    microsecond_in_second = 1000000
+    result = (
+        queryset.exclude(timestamp_end__exact=None)
+        .annotate(date=TruncDay("timestamp_start"))
+        .values("date")
+        .annotate(
+            hours=Sum(
+                F("duration_calculated"),
+                output_field=IntegerField(),
+            )
+        )
+        .values("date", "hours")
+    )
+    keys = []
+    values = []
+    running_total = int(0)
+    for item in result:
+        # date_value = datetime.strftime(item["date"], "%d-%m-%Y")
+        date_value = item["date"]
+        keys.append(date_value)
+        running_total += int(item["hours"] / (3600 * microsecond_in_second))
+        values.append(running_total)
+    data = [keys, values]
+    return get_chart(
+        data,
+        title="Playtime over time (manual excluded)",
+        xlabel="Date",
+        ylabel="Hours",
+    )
+
+
+def get_graph():
+    buffer = BytesIO()
+    plt.savefig(buffer, format="svg", transparent=True)
+    buffer.seek(0)
+    image_png = buffer.getvalue()
+    graph = base64.b64encode(image_png)
+    graph = graph.decode("utf-8")
+    buffer.close()
+    return graph
+
+
+def get_chart(data, title="", xlabel="", ylabel=""):
+    x = data[0]
+    y = data[1]
+    plt.style.use("dark_background")
+    plt.switch_backend("SVG")
+    fig, ax = plt.subplots()
+    fig.set_size_inches(10, 4)
+    ax.plot(x, y)
+    first = x[0]
+    last = x[-1]
+    difference = last - first
+    if difference.days <= 14:
+        ax.xaxis.set_major_locator(mdates.DayLocator())
+    elif difference.days < 60 or len(x) < 60:
+        ax.xaxis.set_major_locator(mdates.WeekdayLocator())
+        ax.xaxis.set_minor_locator(mdates.DayLocator())
+    elif difference.days < 720:
+        ax.xaxis.set_major_locator(mdates.MonthLocator())
+        ax.xaxis.set_minor_locator(mdates.WeekdayLocator())
+    else:
+        ax.xaxis.set_major_locator(mdates.YearLocator())
+        ax.xaxis.set_minor_locator(mdates.MonthLocator())
+
+    ax.xaxis.set_major_formatter(mdates.DateFormatter("%Y-%m-%d"))
+    for label in ax.get_xticklabels(which="major"):
+        label.set(rotation=30, horizontalalignment="right")
+    ax.set_xlabel(xlabel)
+    ax.set_ylabel(ylabel)
+    ax.set_title(title)
+    fig.tight_layout()
+    chart = get_graph()
+    return chart

src/web/common/util/time.py

@@ -1,15 +1,25 @@
-from datetime import datetime, timedelta
-from django.conf import settings
-from zoneinfo import ZoneInfo
 import re
+from datetime import datetime, timedelta
+from zoneinfo import ZoneInfo
+
+from django.conf import settings
 
 
 def now() -> datetime:
     return datetime.now(ZoneInfo(settings.TIME_ZONE))
 
 
+def _safe_timedelta(duration: timedelta | int | None):
+    if duration == None:
+        return timedelta(0)
+    elif isinstance(duration, int):
+        return timedelta(seconds=duration)
+    elif isinstance(duration, timedelta):
+        return duration
+
+
 def format_duration(
-    duration: timedelta, format_string: str = "%H hours %m minutes"
+    duration: timedelta | int | None, format_string: str = "%H hours"
 ) -> str:
     """
     Format timedelta into the specified format_string.
@@ -18,19 +28,28 @@ def format_duration(
     - %m minutes
     - %s seconds
     - %r total seconds
+    Values don't change into higher units if those units are missing
+    from the formatting string. For example:
+    - 61 seconds as "%s" = 61 seconds
+    - 61 seconds as "%m %s" = 1 minutes 1 seconds"
     """
     minute_seconds = 60
     hour_seconds = 60 * minute_seconds
     day_seconds = 24 * hour_seconds
-    if not isinstance(duration, timedelta):
+    duration = _safe_timedelta(duration)
-        duration = timedelta(seconds=duration)
+    # we don't need float
     seconds_total = int(duration.total_seconds())
     # timestamps where end is before start
     if seconds_total < 0:
         seconds_total = 0
-    days, remainder = divmod(seconds_total, day_seconds)
+    days = hours = minutes = seconds = 0
-    hours, remainder = divmod(remainder, hour_seconds)
+    remainder = seconds = seconds_total
-    minutes, seconds = divmod(remainder, minute_seconds)
+    if "%d" in format_string:
+        days, remainder = divmod(seconds_total, day_seconds)
+    if "%H" in format_string:
+        hours, remainder = divmod(remainder, hour_seconds)
+    if "%m" in format_string:
+        minutes, seconds = divmod(remainder, minute_seconds)
     literals = {
         "%d": str(days),
         "%H": str(hours),

src/web/tracker/admin.py

@@ -1,5 +1,6 @@
 from django.contrib import admin
-from .models import Game, Purchase, Platform, Session
+
+from .models import Game, Platform, Purchase, Session
 
 # Register your models here.
 admin.site.register(Game)

src/web/tracker/forms.py

@@ -1,8 +1,26 @@
 from django import forms
-from .models import Session, Purchase, Game, Platform
+
+from .models import Game, Platform, Purchase, Session
 
 
 class SessionForm(forms.ModelForm):
+    custom_datetime_widget = forms.SplitDateTimeWidget(
+        date_format=("%d-%m-%Y"),
+        time_format=("%H:%M"),
+        date_attrs={"type": "date"},
+        time_attrs={"type": "time"},
+    )
+    timestamp_start = forms.SplitDateTimeField(
+        input_date_formats="['%d-%m-%Y]",
+        input_time_formats="['%H:%M']",
+        widget=custom_datetime_widget,
+    )
+    timestamp_end = forms.SplitDateTimeField(
+        input_date_formats="['%d-%m-%Y]",
+        input_time_formats="['%H:%M']",
+        widget=custom_datetime_widget,
+    )
+
     class Meta:
         model = Session
         fields = [
@@ -13,11 +31,27 @@ class SessionForm(forms.ModelForm):
             "note",
         ]
 
+        # fields_classes = {
+        #     "timestamp_start": custom_datetime_field,
+        #     "timestamp_end": custom_datetime_field,
+        # }
+        # widgets = {
+        #     "timestamp_start": custom_datetime_widget,
+        #     "timestamp_end": custom_datetime_widget,
+        # }
+
 
 class PurchaseForm(forms.ModelForm):
     class Meta:
         model = Purchase
         fields = ["game", "platform", "date_purchased", "date_refunded"]
+        custom_date_widget = forms.DateInput(
+            format=("%d-%m-%Y"), attrs={"type": "date"}
+        )
+        widgets = {
+            "date_purchased": custom_date_widget,
+            "date_refunded": custom_date_widget,
+        }
 
 
 class GameForm(forms.ModelForm):

src/web/tracker/migrations/0001_initial.py

@@ -1,7 +1,7 @@
 # Generated by Django 4.1.4 on 2023-01-02 18:27
 
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):

src/web/tracker/migrations/0002_alter_session_duration_manual.py

@@ -1,6 +1,7 @@
 # Generated by Django 4.1.4 on 2023-01-02 18:55
 
 import datetime
+
 from django.db import migrations, models
 
 

src/web/tracker/migrations/0004_alter_session_duration_manual.py

@@ -0,0 +1,22 @@
+# Generated by Django 4.1.5 on 2023-01-09 14:49
+
+import datetime
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("tracker", "0003_alter_session_duration_manual_and_more"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="session",
+            name="duration_manual",
+            field=models.DurationField(
+                blank=True, default=datetime.timedelta(0), null=True
+            ),
+        ),
+    ]

src/web/tracker/migrations/0005_auto_20230109_1843.py

@@ -0,0 +1,35 @@
+# Generated by Django 4.1.5 on 2023-01-09 17:43
+
+from datetime import timedelta
+
+from django.db import migrations
+
+
+def set_duration_calculated_none_to_zero(apps, schema_editor):
+    Session = apps.get_model("tracker", "Session")
+    for session in Session.objects.all():
+        if session.duration_calculated == None:
+            session.duration_calculated = timedelta(0)
+            session.save()
+
+
+def revert_set_duration_calculated_none_to_zero(apps, schema_editor):
+    Session = apps.get_model("tracker", "Session")
+    for session in Session.objects.all():
+        if session.duration_calculated == timedelta(0):
+            session.duration_calculated = None
+            session.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("tracker", "0004_alter_session_duration_manual"),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            set_duration_calculated_none_to_zero,
+            revert_set_duration_calculated_none_to_zero,
+        )
+    ]

src/web/tracker/migrations/0006_auto_20230109_1904.py

@@ -0,0 +1,35 @@
+# Generated by Django 4.1.5 on 2023-01-09 18:04
+
+from datetime import timedelta
+
+from django.db import migrations
+
+
+def set_duration_manual_none_to_zero(apps, schema_editor):
+    Session = apps.get_model("tracker", "Session")
+    for session in Session.objects.all():
+        if session.duration_manual == None:
+            session.duration_manual = timedelta(0)
+            session.save()
+
+
+def revert_set_duration_manual_none_to_zero(apps, schema_editor):
+    Session = apps.get_model("tracker", "Session")
+    for session in Session.objects.all():
+        if session.duration_manual == timedelta(0):
+            session.duration_manual = None
+            session.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("tracker", "0005_auto_20230109_1843"),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            set_duration_manual_none_to_zero,
+            revert_set_duration_manual_none_to_zero,
+        )
+    ]

src/web/tracker/models.py

@@ -1,9 +1,11 @@
-from django.db import models
 from datetime import datetime, timedelta
-from django.conf import settings
+from typing import Any
 from zoneinfo import ZoneInfo
+
 from common.util.time import format_duration
-from django.db.models import Sum
+from django.conf import settings
+from django.db import models
+from django.db.models import F, Manager, Sum
 
 
 class Game(models.Model):
@@ -32,69 +34,58 @@ class Platform(models.Model):
         return self.name
 
 
+class SessionQuerySet(models.QuerySet):
+    def total_duration(self):
+        result = self.aggregate(
+            duration=Sum(F("duration_calculated") + F("duration_manual"))
+        )
+        return format_duration(result["duration"])
+
+
 class Session(models.Model):
     purchase = models.ForeignKey("Purchase", on_delete=models.CASCADE)
     timestamp_start = models.DateTimeField()
     timestamp_end = models.DateTimeField(blank=True, null=True)
-    duration_manual = models.DurationField(blank=True, null=True)
+    duration_manual = models.DurationField(blank=True, null=True, default=timedelta(0))
     duration_calculated = models.DurationField(blank=True, null=True)
     note = models.TextField(blank=True, null=True)
 
+    objects = SessionQuerySet.as_manager()
+
     def __str__(self):
         mark = ", manual" if self.duration_manual != None else ""
-        return f"{str(self.purchase)} {str(self.timestamp_start.date())} ({self.duration_any()}{mark})"
+        return f"{str(self.purchase)} {str(self.timestamp_start.date())} ({self.duration_formatted()}{mark})"
 
     def finish_now(self):
         self.timestamp_end = datetime.now(ZoneInfo(settings.TIME_ZONE))
 
+    def start_now():
+        self.timestamp_start = datetime.now(ZoneInfo(settings.TIME_ZONE))
+
     def duration_seconds(self) -> timedelta:
-        if self.duration_manual == None:
+        manual = timedelta(0)
-            if self.timestamp_end == None or self.timestamp_start == None:
+        calculated = timedelta(0)
-                return timedelta(0)
+        if not self.duration_manual in (None, 0, timedelta(0)):
-            else:
+            manual = self.duration_manual
-                value = self.timestamp_end - self.timestamp_start
+        if self.timestamp_end != None and self.timestamp_start != None:
-        else:
+            calculated = self.timestamp_end - self.timestamp_start
-            value = self.duration_manual
+        return timedelta(seconds=(manual + calculated).total_seconds())
-        return timedelta(seconds=value.total_seconds())
 
     def duration_formatted(self) -> str:
         result = format_duration(self.duration_seconds(), "%H:%m")
         return result
 
-    def duration_any(self):
+    @property
-        return (
+    def duration_sum(self) -> str:
-            self.duration_formatted()
+        return Session.objects.all().total_duration()
-            if self.duration_manual == None
-            else self.duration_manual
-        )
 
-    @staticmethod
+    @property
-    def calculated_sum() -> timedelta:
+    def last(self) -> Manager[Any]:
-        calculated_sum_query = Session.objects.all().aggregate(
+        return Session.objects.all().order_by("timestamp_start")[0]
-            Sum("duration_calculated")
-        )
-        calculated_sum = (
-            timedelta(0)
-            if calculated_sum_query["duration_calculated__sum"] == None
-            else calculated_sum_query["duration_calculated__sum"]
-        )
-        return calculated_sum
-
-    @staticmethod
-    def manual_sum() -> timedelta:
-        manual_sum_query = Session.objects.all().aggregate(Sum("duration_manual"))
-        manual_sum = (
-            timedelta(0)
-            if manual_sum_query["duration_manual__sum"] == None
-            else manual_sum_query["duration_manual__sum"]
-        )
-        return manual_sum
-
-    @staticmethod
-    def total_sum() -> timedelta:
-        return Session.manual_sum() + Session.calculated_sum()
 
     def save(self, *args, **kwargs):
         if self.timestamp_start != None and self.timestamp_end != None:
             self.duration_calculated = self.timestamp_end - self.timestamp_start
+        else:
+            self.duration_calculated = timedelta(0)
         super(Session, self).save(*args, **kwargs)

src/web/tracker/static/base.css

@@ -683,34 +683,66 @@ select {
   width: 100%;
 }
 
+.\!container {
+  width: 100% !important;
+}
+
 @media (min-width: 640px) {
   .container {
     max-width: 640px;
   }
+
+  .\!container {
+    max-width: 640px !important;
+  }
 }
 
 @media (min-width: 768px) {
   .container {
     max-width: 768px;
   }
+
+  .\!container {
+    max-width: 768px !important;
+  }
 }
 
 @media (min-width: 1024px) {
   .container {
     max-width: 1024px;
   }
+
+  .\!container {
+    max-width: 1024px !important;
+  }
 }
 
 @media (min-width: 1280px) {
   .container {
     max-width: 1280px;
   }
+
+  .\!container {
+    max-width: 1280px !important;
+  }
 }
 
 @media (min-width: 1536px) {
   .container {
     max-width: 1536px;
   }
+
+  .\!container {
+    max-width: 1536px !important;
+  }
+}
+
+.visible {
+  visibility: visible;
+}
+
+.collapse {
+  visibility: collapse;
 }
 
 .static {
@@ -721,6 +753,26 @@ select {
   position: fixed;
 }
 
+.\!fixed {
+  position: fixed !important;
+}
+
+.absolute {
+  position: absolute;
+}
+
+.relative {
+  position: relative;
+}
+
+.sticky {
+  position: sticky;
+}
+
+.\!sticky {
+  position: sticky !important;
+}
+
 .left-2 {
   left: 0.5rem;
 }
@@ -734,6 +786,11 @@ select {
   margin-right: auto;
 }
 
+.my-5 {
+  margin-top: 1.25rem;
+  margin-bottom: 1.25rem;
+}
+
 .mb-4 {
   margin-bottom: 1rem;
 }
@@ -742,18 +799,70 @@ select {
   margin-top: 1rem;
 }
 
+.mb-3 {
+  margin-bottom: 0.75rem;
+}
+
 .ml-1 {
   margin-left: 0.25rem;
 }
 
+.mt-5 {
+  margin-top: 1.25rem;
+}
+
+.mb-2 {
+  margin-bottom: 0.5rem;
+}
+
+.mt-10 {
+  margin-top: 2.5rem;
+}
+
 .block {
   display: block;
 }
 
+.inline-block {
+  display: inline-block;
+}
+
+.inline {
+  display: inline;
+}
+
 .flex {
   display: flex;
 }
 
+.table {
+  display: table;
+}
+
+.table-caption {
+  display: table-caption;
+}
+
+.table-cell {
+  display: table-cell;
+}
+
+.contents {
+  display: contents;
+}
+
+.hidden {
+  display: none;
+}
+
+.\!hidden {
+  display: none !important;
+}
+
+.h-6 {
+  height: 1.5rem;
+}
+
 .h-5 {
   height: 1.25rem;
 }
@@ -770,6 +879,10 @@ select {
   width: 100%;
 }
 
+.w-6 {
+  width: 1.5rem;
+}
+
 .w-5 {
   width: 1.25rem;
 }
@@ -786,6 +899,10 @@ select {
   max-width: 1024px;
 }
 
+.resize {
+  resize: both;
+}
+
 .flex-col {
   flex-direction: column;
 }
@@ -818,6 +935,20 @@ select {
   align-self: center;
 }
 
+.overflow-hidden {
+  overflow: hidden;
+}
+
+.truncate {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.text-ellipsis {
+  text-overflow: ellipsis;
+}
+
 .whitespace-nowrap {
   white-space: nowrap;
 }
@@ -826,12 +957,16 @@ select {
   border-radius: 0.25rem;
 }
 
+.rounded-lg {
+  border-radius: 0.5rem;
+}
+
 .rounded-xl {
   border-radius: 0.75rem;
 }
 
-.rounded-lg {
+.border {
-  border-radius: 0.5rem;
+  border-width: 1px;
 }
 
 .border-gray-200 {
@@ -913,20 +1048,28 @@ select {
   line-height: 1rem;
 }
 
-.text-lg {
-  font-size: 1.125rem;
-  line-height: 1.75rem;
-}
-
 .text-base {
   font-size: 1rem;
   line-height: 1.5rem;
 }
 
+.text-lg {
+  font-size: 1.125rem;
+  line-height: 1.75rem;
+}
+
 .font-semibold {
   font-weight: 600;
 }
 
+.uppercase {
+  text-transform: uppercase;
+}
+
+.lowercase {
+  text-transform: lowercase;
+}
+
 .text-white {
   --tw-text-opacity: 1;
   color: rgb(255 255 255 / var(--tw-text-opacity));
@@ -942,10 +1085,9 @@ select {
   color: rgb(248 113 113 / var(--tw-text-opacity));
 }
 
-.shadow {
+.text-red-700 {
-  --tw-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
+  --tw-text-opacity: 1;
-  --tw-shadow-colored: 0 1px 3px 0 var(--tw-shadow-color), 0 1px 2px -1px var(--tw-shadow-color);
+  color: rgb(185 28 28 / var(--tw-text-opacity));
-  box-shadow: var(--tw-ring-offset-shadow, 0 0 #0000), var(--tw-ring-shadow, 0 0 #0000), var(--tw-shadow);
 }
 
 .shadow-md {
@@ -954,6 +1096,35 @@ select {
   box-shadow: var(--tw-ring-offset-shadow, 0 0 #0000), var(--tw-ring-shadow, 0 0 #0000), var(--tw-shadow);
 }
 
+.shadow {
+  --tw-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
+  --tw-shadow-colored: 0 1px 3px 0 var(--tw-shadow-color), 0 1px 2px -1px var(--tw-shadow-color);
+  box-shadow: var(--tw-ring-offset-shadow, 0 0 #0000), var(--tw-ring-shadow, 0 0 #0000), var(--tw-shadow);
+}
+
+.blur {
+  --tw-blur: blur(8px);
+  filter: var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow);
+}
+
+.invert {
+  --tw-invert: invert(100%);
+  filter: var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow);
+}
+
+.\!invert {
+  --tw-invert: invert(100%) !important;
+  filter: var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow) !important;
+}
+
+.filter {
+  filter: var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow);
+}
+
+.\!filter {
+  filter: var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow) !important;
+}
+
 .transition {
   transition-property: color, background-color, border-color, text-decoration-color, fill, stroke, opacity, box-shadow, transform, filter, -webkit-backdrop-filter;
   transition-property: color, background-color, border-color, text-decoration-color, fill, stroke, opacity, box-shadow, transform, filter, backdrop-filter;
@@ -989,7 +1160,7 @@ textarea {
 
 #session-table {
   display: grid;
-  grid-template-columns: repeat(3, 2fr) 0.5fr 1fr;
+  grid-template-columns: 3fr 1fr repeat(2, 2fr) 0.5fr 1fr;
 }
 
 #button-container button {

src/web/tracker/templates/list_sessions.html

@@ -3,20 +3,41 @@
 {% block title %}Sessions{% endblock title %}
 
 {% block content %}
-    {% if purchase %}
         <div class="text-center text-xl mb-4 dark:text-slate-400">
-            <h1>Listing sessions only for purchase "{{ purchase }}"</h1>
+            {% if dataset.count >= 2 %}
-            <a class="dark:text-white hover:underline" href="{% url 'list_sessions' %}">View all sessions</a>
+            <img src="data:image/svg+xml;base64,{{ chart|safe }}" class="mx-auto mb-3" />
+            {% endif %}
+            {% if dataset.count >= 1 %}
+            <div class="mb-4">Total playtime: {{ total_duration }} over {{ dataset.count }} sessions.</div>
+            {% endif %}
+            {% if purchase or platform or game %}
+            <a class="text-red-400 inline" href="{% url 'list_sessions' %}"><svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-6 h-6 inline">
+                <path stroke-linecap="round" stroke-linejoin="round" d="M9.75 9.75l4.5 4.5m0-4.5l-4.5 4.5M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
+              </svg>
+              </a><span>Filtering by "{% firstof purchase platform game %}"</span>
+            {% if purchase %}<a class="dark:text-white hover:underline block" href="{% url 'list_sessions_by_game' purchase.game.id %}">See all platforms</a>{% endif %}
+            {% endif %}
+            {% if dataset.count >= 1 %}
+            <a class="block" href="{% url 'start_session' dataset.last.purchase.id %}">
+                <button type="button" title="Track last tracked" class="mt-10 py-1 px-2 bg-green-600 hover:bg-green-700 focus:ring-green-500 focus:ring-offset-blue-200 text-white transition ease-in duration-200 text-center text-base font-semibold shadow-md focus:outline-none focus:ring-2 focus:ring-offset-2 rounded-lg ">
+                    <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="self-center w-6 h-6 inline">
+                        <path stroke-linecap="round" stroke-linejoin="round" d="M5.25 5.653c0-.856.917-1.398 1.667-.986l11.54 6.348a1.125 1.125 0 010 1.971l-11.54 6.347a1.125 1.125 0 01-1.667-.985V5.653z" />
+                    </svg>
+                    {{ last.purchase }}
+                </button>
+            </a>
+            {% endif %}
         </div>
-    {% endif %}
     <div id="session-table" class="gap-4 shadow rounded-xl max-w-screen-lg mx-auto dark:bg-slate-700 p-2 justify-center">
         <div class="dark:border-white dark:text-slate-300 text-lg">Name</div>
+        <div class="dark:border-white dark:text-slate-300 text-lg">Platform</div>
         <div class="dark:border-white dark:text-slate-300 text-lg text-center">Start</div>
         <div class="dark:border-white dark:text-slate-300 text-lg text-center">End</div>
         <div class="dark:border-white dark:text-slate-300 text-lg">Duration</div>
         <div class="dark:border-white dark:text-slate-300 text-lg text-right">Manage</div>
         {% for data in dataset %}
-            <div><a class="dark:text-white hover:underline" href="{% url 'list_sessions' data.purchase.id %}">{{ data.purchase }}</a></div>
+            <div class="dark:text-white overflow-hidden text-ellipsis whitespace-nowrap"><a class="hover:underline" href="{% url 'list_sessions_by_purchase' data.purchase.id %}">{{ data.purchase.game }}</a></div>
+            <div class="dark:text-white overflow-hidden text-ellipsis whitespace-nowrap"><a class="hover:underline" href="{% url 'list_sessions_by_platform' data.purchase.platform.id %}">{{ data.purchase.platform }}</a></div>
             <div class="dark:text-slate-400 text-center">{{ data.timestamp_start | date:"d/m/Y H:i" }}</div>
             <div class="dark:text-slate-400 text-center">
                 {% if data.unfinished %}

src/web/tracker/templatetags/version.py

@@ -1,7 +1,8 @@
+import os
+import time
+
 from django import template
 from django.conf import settings
-import time
-import os
 
 register = template.Library()
 

src/web/tracker/urls.py

@@ -12,6 +12,11 @@ urlpatterns = [
         views.update_session,
         name="update_session",
     ),
+    path(
+        "start-session/<int:purchase_id>",
+        views.start_session,
+        name="start_session",
+    ),
     path(
         "delete_session/by-id/<int:session_id>",
         views.delete_session,
@@ -22,6 +27,19 @@ urlpatterns = [
     path(
         "list-sessions/by-purchase/<int:purchase_id>",
         views.list_sessions,
-        name="list_sessions",
+        {"filter": "purchase"},
+        name="list_sessions_by_purchase",
+    ),
+    path(
+        "list-sessions/by-platform/<int:platform_id>",
+        views.list_sessions,
+        {"filter": "platform"},
+        name="list_sessions_by_platform",
+    ),
+    path(
+        "list-sessions/by-game/<int:game_id>",
+        views.list_sessions,
+        {"filter": "game"},
+        name="list_sessions_by_game",
     ),
 ]

src/web/tracker/views.py

@@ -1,13 +1,13 @@
-from django.shortcuts import render, redirect
+from datetime import datetime
-
-from .models import Game, Platform, Purchase, Session
-from .forms import SessionForm, PurchaseForm, GameForm, PlatformForm
-from datetime import datetime, timedelta
 from zoneinfo import ZoneInfo
+
+from common.util.plots import playtime_over_time_chart
+from common.util.time import now as now_with_tz
 from django.conf import settings
-from common.util.time import now as now_with_tz, format_duration
+from django.shortcuts import redirect, render
-from django.db.models import Sum
+
-import logging
+from .forms import GameForm, PlatformForm, PurchaseForm, SessionForm
+from .models import Game, Platform, Purchase, Session
 
 
 def model_counts(request):
@@ -22,7 +22,12 @@ def model_counts(request):
 def add_session(request):
     context = {}
     now = now_with_tz()
-    initial = {"timestamp_start": now}
+    last = Session.objects.all().last()
+    initial = {
+        "timestamp_start_0": now.date(),
+        "timestamp_start_1": now.time(),
+        "purchase": last.purchase,
+    }
     form = SessionForm(request.POST or None, initial=initial)
     if form.is_valid():
         form.save()
@@ -40,27 +45,43 @@ def update_session(request, session_id=None):
     return redirect("list_sessions")
 
 
+def start_session(request, purchase_id=None):
+    session = SessionForm({"purchase": purchase_id, "timestamp_start": now_with_tz()})
+    session.save()
+    return redirect("list_sessions")
+
+
 def delete_session(request, session_id=None):
     session = Session.objects.get(id=session_id)
     session.delete()
     return redirect("list_sessions")
 
 
-def list_sessions(request, purchase_id=None):
+def list_sessions(request, filter="", purchase_id="", platform_id="", game_id=""):
     context = {}
 
-    if purchase_id != None:
+    if filter == "purchase":
         dataset = Session.objects.filter(purchase=purchase_id)
         context["purchase"] = Purchase.objects.get(id=purchase_id)
+    elif filter == "platform":
+        dataset = Session.objects.filter(purchase__platform=platform_id)
+        context["platform"] = Platform.objects.get(id=platform_id)
+    elif filter == "game":
+        dataset = Session.objects.filter(purchase__game=game_id)
+        context["game"] = Game.objects.get(id=game_id)
     else:
-        dataset = Session.objects.all().order_by("timestamp_start")
+        dataset = Session.objects.all().order_by("-timestamp_start")
 
     for session in dataset:
-        if session.timestamp_end == None and session.duration_manual == None:
+        if session.timestamp_end == None and session.duration_manual.seconds == 0:
             session.timestamp_end = datetime.now(ZoneInfo(settings.TIME_ZONE))
             session.unfinished = True
 
+    context["total_duration"] = dataset.total_duration()
     context["dataset"] = dataset
+    context["last"] = Session.objects.all().last()
+    # charts are always oldest->newest
+    context["chart"] = playtime_over_time_chart(dataset.order_by("timestamp_start"))
 
     return render(request, "list_sessions.html", context)
 
@@ -105,12 +126,6 @@ def add_platform(request):
 
 def index(request):
     context = {}
-    if Session.objects.count() == 0:
+    context["total_duration"] = Session().duration_sum
-        duration: str = ""
-    else:
-        context["total_duration"] = format_duration(
-            Session.total_sum(),
-            "%H hours %m minutes",
-        )
     context["title"] = "Index"
     return render(request, "index.html", context)

src/web/web/settings.py

@@ -10,9 +10,8 @@ For the full list of settings and their values, see
 https://docs.djangoproject.com/en/4.1/ref/settings/
 """
 
-from pathlib import Path
-import logging
 import os
+from pathlib import Path
 
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
 BASE_DIR = Path(__file__).resolve().parent.parent

src/web/web/urls.py

@@ -13,11 +13,10 @@ Including another URLconf
     1. Import the include() function: from django.urls import include, path
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
+from django.conf import settings
 from django.contrib import admin
 from django.urls import include, path
 from django.views.generic import RedirectView
-from django.conf import settings
-
 
 urlpatterns = [
     path("", RedirectView.as_view(url="/tracker/list-sessions")),

tests/test_time.py

@@ -1,7 +1,8 @@
 import unittest
-from web.common.util.time import format_duration
 from datetime import timedelta
 
+from web.common.util.time import format_duration
+
 
 class FormatDurationTest(unittest.TestCase):
     def setUp(self) -> None:
@@ -18,15 +19,40 @@ class FormatDurationTest(unittest.TestCase):
         result = format_duration(delta, "%H hours")
         self.assertEqual(result, "1 hours")
 
+    def test_overflow_hours(self):
+        delta = timedelta(hours=25)
+        result = format_duration(delta, "%H hours")
+        self.assertEqual(result, "25 hours")
+
+    def test_overflow_hours_into_days(self):
+        delta = timedelta(hours=25)
+        result = format_duration(delta, "%d days, %H hours")
+        self.assertEqual(result, "1 days, 1 hours")
+
     def test_only_minutes(self):
         delta = timedelta(minutes=34)
         result = format_duration(delta, "%m minutes")
         self.assertEqual(result, "34 minutes")
 
+    def test_only_overflow_minutes(self):
+        delta = timedelta(minutes=61)
+        result = format_duration(delta, "%m minutes")
+        self.assertEqual(result, "61 minutes")
+
+    def test_overflow_minutes_into_hours(self):
+        delta = timedelta(minutes=61)
+        result = format_duration(delta, "%H hours, %m minutes")
+        self.assertEqual(result, "1 hours, 1 minutes")
+
     def test_only_overflow_seconds(self):
         delta = timedelta(seconds=61)
         result = format_duration(delta, "%s seconds")
-        self.assertEqual(result, "1 seconds")
+        self.assertEqual(result, "61 seconds")
+
+    def test_overflow_seconds_into_minutes(self):
+        delta = timedelta(seconds=61)
+        result = format_duration(delta, "%m minutes, %s seconds")
+        self.assertEqual(result, "1 minutes, 1 seconds")
 
     def test_only_rawseconds(self):
         delta = timedelta(seconds=5690)
@@ -56,3 +82,12 @@ class FormatDurationTest(unittest.TestCase):
         delta = timedelta(hours=-2)
         result = format_duration(delta, "%H hours")
         self.assertEqual(result, "0 hours")
+
+    def test_none(self):
+        try:
+            format_duration(None)
+        except TypeError as exc:
+            assert False, f"format_duration(None) raised an exception {exc}"
+
+    def test_number(self):
+        self.assertEqual(format_duration(3600, "%H hour"), "1 hour")