Display playtime graph on session list

Fixes #29

.dockerignore

@@ -0,0 +1,5 @@
+src/web/static/*
+.venv
+.githooks
+.vscode
+node_modules

.gitignore

@@ -4,4 +4,5 @@ __pycache__
 .venv
 node_modules
 package-lock.json
-db.sqlite3
+db.sqlite3
+src/web/static

CHANGELOG.md

@@ -1,3 +1,30 @@
+## 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)
+
+## 0.1.3 / 2023-01-08 15:23+01:00
+
+* Fix CSRF error (https://git.kucharczyk.xyz/lukas/timetracker/pulls/22)
+
+## 0.1.2 / 2023-01-07 22:05+01:00
+
+* Switch to Uvicorn/Gunicorn + Caddy (https://git.kucharczyk.xyz/lukas/timetracker/pulls/4)
+
 ## 0.1.1 / 2023-01-05 23:26+01:00
 * Order by timestamp_start by default
 * Add pre-commit hook to update version
@@ -19,4 +46,4 @@
 * Make it possible to add a new platform
 * Save calculated duration to database if both timestamps are set
 * Improve session listing
-* Set version in the footer to fixed, fix main container height
+* Set version in the footer to fixed, fix main container height

Caddyfile

@@ -0,0 +1,14 @@
+{
+    auto_https off
+    admin off
+}
+
+:8000 {
+    handle_path /static/* {
+        root * src/web/static/
+        file_server
+    }
+    handle {
+        reverse_proxy :8001
+    }
+}

Dockerfile

@@ -4,12 +4,17 @@ COPY . /app
 RUN npm install && \
     npx tailwindcss -i ./src/input.css -o ./src/web/tracker/static/base.css --minify
 
-FROM python:3.10-slim-bullseye
+FROM python:3.10.9-alpine
 
-ENV VERSION_NUMBER 0.1.0-48-gdb5de81
+ENV VERSION_NUMBER 0.2.2
 ENV PROD 1
 
-RUN useradd --create-home --uid 1000 timetracker
+RUN apk add \
+    bash \
+    vim \
+    curl \
+    caddy
+RUN adduser -D -u 1000 timetracker
 WORKDIR /home/timetracker/app
 COPY . /home/timetracker/app/
 RUN chown -R timetracker:timetracker /home/timetracker/app

Makefile

@@ -1,5 +1,3 @@
-.PHONY: createsuperuser shell
-
 all: css migrate
 
 initialize: npm css migrate sethookdir loadplatforms
@@ -22,7 +20,13 @@ migrate: makemigrations
 	poetry run python src/web/manage.py migrate
 
 dev: migrate sethookdir
-	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
+	cd src/web/; PROD=1 poetry run python -m gunicorn --bind 0.0.0.0:8001 web.asgi:application -k uvicorn.workers.UvicornWorker
 
 dumptracker:
 	poetry run python src/web/manage.py dumpdata --format yaml tracker --output tracker_fixture.yaml
@@ -39,6 +43,9 @@ createsuperuser:
 shell:
 	poetry run python src/web/manage.py shell
 
+collectstatic:
+	poetry run python src/web/manage.py collectstatic --clear --no-input
+
 poetry.lock: pyproject.toml
 	poetry install
 
@@ -48,5 +55,10 @@ test: poetry.lock
 sethookdir:
 	git config core.hooksPath .githooks
 
-make date:
+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/*
+
+clean: cleanstatic

docker-compose.yml

@@ -0,0 +1,17 @@
+---
+services:
+  timetracker:
+    image: registry.kucharczyk.xyz/timetracker
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: timetracker
+    environment:
+      - TZ=Europe/Prague
+      - CSRF_TRUSTED_ORIGINS="https://tracker.kucharczyk.xyz"
+    user: "1000"
+    # volumes:
+    #   - "db:/home/timetracker/app/src/web/db.sqlite3"
+    ports:
+      - "8000:8000"
+    restart: unless-stopped

entrypoint.sh

@@ -1,8 +1,13 @@
 #!/bin/bash
 # Apply database migrations
+set -euo pipefail
 echo "Apply database migrations"
 poetry run python src/web/manage.py migrate
 
-# Start server
+echo "Collect static files"
+poetry run python src/web/manage.py collectstatic --clear --no-input
+
 echo "Starting server"
-poetry run python src/web/manage.py runserver 0.0.0.0:8000
+caddy start
+cd src/web || exit
+poetry run python -m gunicorn --bind 0.0.0.0:8001 web.asgi:application -k uvicorn.workers.UvicornWorker --access-logfile - --error-logfile -

poetry.lock

@@ -73,7 +73,7 @@ uvloop = ["uvloop (>=0.15.2)"]
 name = "click"
 version = "8.1.3"
 description = "Composable command line interface toolkit"
-category = "dev"
+category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -88,7 +88,7 @@ colorama = {version = "*", markers = "platform_system == \"Windows\""}
 name = "colorama"
 version = "0.4.6"
 description = "Cross-platform colored terminal text."
-category = "dev"
+category = "main"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,>=2.7"
 files = [
@@ -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 = [
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+    {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 +302,65 @@ 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"]
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 description = "Core utilities for Python packages"
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 python-versions = ">=3.7"
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+
 [[package]]
 name = "platformdirs"
 version = "2.6.2"
@@ -455,6 +911,21 @@ files = [
 dev = ["pre-commit", "tox"]
 testing = ["pytest", "pytest-benchmark"]
 
+[[package]]
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+version = "3.0.9"
+description = "pyparsing module - Classes and methods to define and execute parsing grammars"
+category = "main"
+optional = false
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+]
+
+[package.extras]
+diagrams = ["jinja2", "railroad-diagrams"]
+
 [[package]]
 name = "pytest"
 version = "7.2.0"
@@ -479,6 +950,33 @@ 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"
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+]
+
+[package.dependencies]
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+
+[[package]]
+name = "pytz"
+version = "2022.7.1"
+description = "World timezone definitions, modern and historical"
+category = "main"
+optional = false
+python-versions = "*"
+files = [
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+]
+
 [[package]]
 name = "pyyaml"
 version = "6.0"
@@ -627,11 +1125,28 @@ files = [
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 ]
 
+[[package]]
+name = "setuptools"
+version = "65.6.3"
+description = "Easily download, build, install, upgrade, and uninstall Python packages"
+category = "main"
+optional = false
+python-versions = ">=3.7"
+files = [
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+
 [[package]]
 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 = [
@@ -708,6 +1223,25 @@ files = [
     {file = "tzdata-2022.7.tar.gz", hash = "sha256:fe5f866eddd8b96e9fcba978f8e503c909b19ea7efda11e52e39494bad3a7bfa"},
 ]
 
+[[package]]
+name = "uvicorn"
+version = "0.20.0"
+description = "The lightning-fast ASGI server."
+category = "main"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "uvicorn-0.20.0-py3-none-any.whl", hash = "sha256:c3ed1598a5668208723f2bb49336f4509424ad198d6ab2615b7783db58d919fd"},
+    {file = "uvicorn-0.20.0.tar.gz", hash = "sha256:a4e12017b940247f836bc90b72e725d7dfd0c8ed1c51eb365f5ba30d9f5127d8"},
+]
+
+[package.dependencies]
+click = ">=7.0"
+h11 = ">=0.8"
+
+[package.extras]
+standard = ["colorama (>=0.4)", "httptools (>=0.5.0)", "python-dotenv (>=0.13)", "pyyaml (>=5.1)", "uvloop (>=0.14.0,!=0.15.0,!=0.15.1)", "watchfiles (>=0.13)", "websockets (>=10.4)"]
+
 [[package]]
 name = "werkzeug"
 version = "2.2.2"
@@ -745,4 +1279,4 @@ testing = ["flake8 (<5)", "func-timeout", "jaraco.functools", "jaraco.itertools"
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.10"
-content-hash = "4e2d507e5549e97f894ebcaf0781c1fa54acf3444583510c36d3807e6c4761d9"
+content-hash = "01d5c9b89b638c993f8540298dedfa79321b3aac1b2af70da58ef77706d0a113"

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "timetracker"
-version = "0.1.0"
+version = "0.2.2"
 description = "A simple time tracker."
 authors = ["Lukáš Kucharczyk <lukas@kucharczyk.xyz>"]
 license = "GPL"
@@ -9,6 +9,10 @@ readme = "README.md"
 [tool.poetry.dependencies]
 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"

src/web/common/util/plots.py

@@ -0,0 +1,64 @@
+import pandas as pd
+import matplotlib.pyplot as plt
+from matplotlib.dates import date2num
+import base64
+from io import BytesIO
+from tracker.models import Session
+from django.db.models import Sum, IntegerField, F
+from django.db.models.functions import TruncDay
+import logging
+from datetime import datetime
+from django.db.models import QuerySet
+
+
+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.annotate(date=TruncDay("timestamp_start"))
+        .values("date")
+        .annotate(
+            hours=Sum(
+                F("duration_calculated") + F("duration_manual"),
+                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")
+        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", 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=""):
+    plt.style.use("dark_background")
+    plt.switch_backend("SVG")
+    fig = plt.figure(figsize=(10, 4))
+    plt.plot(data[0], data[1])
+    plt.title(title)
+    plt.xlabel(xlabel)
+    plt.ylabel(ylabel)
+    plt.tight_layout()
+    chart = get_graph()
+    return chart

src/web/common/util/time.py

@@ -8,8 +8,17 @@ 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 +27,28 @@ 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/migrations/0004_alter_session_duration_manual.py

@@ -0,0 +1,21 @@
+# 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 +1,34 @@
+# Generated by Django 4.1.5 on 2023-01-09 17:43
+
+from django.db import migrations
+from datetime import timedelta
+
+
+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 +1,34 @@
+# Generated by Django 4.1.5 on 2023-01-09 18:04
+
+from django.db import migrations
+from datetime import timedelta
+
+
+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

@@ -3,7 +3,9 @@ from datetime import datetime, timedelta
 from django.conf import settings
 from zoneinfo import ZoneInfo
 from common.util.time import format_duration
-from django.db.models import Sum
+from django.db.models import Sum, F
+from django.db.models import Manager
+from typing import Any
 
 
 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")[:-1]
-            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;
 }
@@ -742,6 +794,10 @@ select {
   margin-top: 1rem;
 }
 
+.mb-5 {
+  margin-bottom: 1.25rem;
+}
+
 .ml-1 {
   margin-left: 0.25rem;
 }
@@ -750,10 +806,42 @@ select {
   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-5 {
   height: 1.25rem;
 }
@@ -786,6 +874,10 @@ select {
   max-width: 1024px;
 }
 
+.resize {
+  resize: both;
+}
+
 .flex-col {
   flex-direction: column;
 }
@@ -818,6 +910,12 @@ select {
   align-self: center;
 }
 
+.truncate {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
 .whitespace-nowrap {
   white-space: nowrap;
 }
@@ -826,12 +924,16 @@ 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 +1015,28 @@ 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));
@@ -942,16 +1052,39 @@ select {
   color: rgb(248 113 113 / var(--tw-text-opacity));
 }
 
+.shadow-md {
+  --tw-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
+  --tw-shadow-colored: 0 4px 6px -1px var(--tw-shadow-color), 0 2px 4px -2px var(--tw-shadow-color);
+  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);
 }
 
-.shadow-md {
+.blur {
-  --tw-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
+  --tw-blur: blur(8px);
-  --tw-shadow-colored: 0 4px 6px -1px var(--tw-shadow-color), 0 2px 4px -2px var(--tw-shadow-color);
+  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);
-  box-shadow: var(--tw-ring-offset-shadow, 0 0 #0000), var(--tw-ring-shadow, 0 0 #0000), var(--tw-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 {

src/web/tracker/templates/list_sessions.html

@@ -3,12 +3,23 @@
 {% block title %}Sessions{% endblock title %}
 
 {% block content %}
-    {% if purchase %}
         <div class="text-center text-xl mb-4 dark:text-slate-400">
+            {% if dataset.count >= 2 %}
+            <img src="data:image/svg+xml;base64,{{ chart|safe }}" class="mx-auto mb-5" />
+            <a href="{% url 'start_session' dataset.last.purchase.id %}">
+                <button type="button" title="Track last tracked" class="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 ">
+                    New session of {{ dataset.last.purchase }}
+                </button>
+            </a>
+            {% else %}
+            Playtime chart will be displayed when there are 2 or more sessions.
+            {% endif %}
+            {% if purchase %}
             <h1>Listing sessions only for purchase "{{ purchase }}"</h1>
+            <h2>Total playtime: {{ total_duration }} over {{ dataset.count }} sessions.</h2>
             <a class="dark:text-white hover:underline" href="{% url 'list_sessions' %}">View all sessions</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 text-center">Start</div>

src/web/tracker/templatetags/version.py

@@ -1,4 +1,5 @@
 from django import template
+from django.conf import settings
 import time
 import os
 
@@ -9,7 +10,11 @@ register = template.Library()
 def version_date():
     return time.strftime(
         "%d-%b-%Y %H:%m",
-        time.gmtime(os.path.getmtime(os.path.abspath(os.path.join(".git")))),
+        time.gmtime(
+            os.path.getmtime(
+                os.path.abspath(os.path.join(settings.BASE_DIR, "..", "..", ".git"))
+            )
+        ),
     )
 
 

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,

src/web/tracker/views.py

@@ -8,6 +8,7 @@ from django.conf import settings
 from common.util.time import now as now_with_tz, format_duration
 from django.db.models import Sum
 import logging
+from common.util.plots import playtime_over_time_chart
 
 
 def model_counts(request):
@@ -40,6 +41,12 @@ 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()
@@ -56,11 +63,13 @@ def list_sessions(request, purchase_id=None):
         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["chart"] = playtime_over_time_chart(dataset)
 
     return render(request, "list_sessions.html", context)
 
@@ -105,12 +114,6 @@ 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

@@ -34,7 +34,6 @@ ALLOWED_HOSTS = ["*"]
 
 INSTALLED_APPS = [
     "tracker.apps.TrackerConfig",
-    "django.contrib.admin",
     "django.contrib.auth",
     "django.contrib.contenttypes",
     "django.contrib.sessions",
@@ -44,6 +43,7 @@ INSTALLED_APPS = [
 
 if DEBUG:
     INSTALLED_APPS.append("django_extensions")
+    INSTALLED_APPS.append("django.contrib.admin")
 
 MIDDLEWARE = [
     "django.middleware.security.SecurityMiddleware",
@@ -123,6 +123,7 @@ USE_TZ = True
 # https://docs.djangoproject.com/en/4.1/howto/static-files/
 
 STATIC_URL = "static/"
+STATIC_ROOT = BASE_DIR / "static"
 
 # Default primary key field type
 # https://docs.djangoproject.com/en/4.1/ref/settings/#default-auto-field
@@ -144,7 +145,8 @@ LOGGING = {
     },
 }
 
-CSRF_TRUSTED_ORIGINS = []
+_csrf_trusted_origins = os.environ.get("CSRF_TRUSTED_ORIGINS")
-
+if _csrf_trusted_origins:
-if os.environ.get("PROD"):
+    CSRF_TRUSTED_ORIGINS = _csrf_trusted_origins.split(",")
-    CSRF_TRUSTED_ORIGINS.append(os.environ.get("CSRF_TRUSTED_ORIGINS"))
+else:
+    CSRF_TRUSTED_ORIGINS = []

src/web/web/urls.py

@@ -16,10 +16,13 @@ Including another URLconf
 from django.contrib import admin
 from django.urls import include, path
 from django.views.generic import RedirectView
+from django.conf import settings
 
 
 urlpatterns = [
-    path("admin/", admin.site.urls),
     path("", RedirectView.as_view(url="/tracker/list-sessions")),
     path("tracker/", include("tracker.urls")),
 ]
+
+if settings.DEBUG:
+    urlpatterns.append(path("admin/", admin.site.urls))

tests/test_time.py

@@ -18,15 +18,40 @@ 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 +81,12 @@ 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")