feat(app/view): add tag routing

weather/app/route/util.py

@@ -0,0 +1,57 @@
+import datetime
+from enum import Enum
+from typing import NamedTuple, Optional
+
+
+class TagType(str, Enum):
+    DAY = "day"
+    DAYS = "days"
+
+
+class Tag(NamedTuple):
+    type: TagType
+    date: datetime.date
+    days: int = 1
+
+    def __str__(self) -> str:
+        if self.type == TagType.DAY:
+            today = datetime.date.today()
+            day = (self.date - today).days
+            return f"day-{day}"
+        elif self.type == TagType.DAYS:
+            return f"days-{self.days}"
+        else:
+            raise ValueError(self.type)
+
+
+class TagUtil:
+    @classmethod
+    def parse_tag(cls, tag: str) -> Tag:
+        if tag == "today":
+            return Tag(TagType.DAY, datetime.date.today())
+        elif tag == "tomorrow":
+            return Tag(TagType.DAY, datetime.date.today() + datetime.timedelta(days=1))
+        elif tag.startswith("day-"):
+            days = int(tag.split("-")[-1])
+            return Tag(
+                TagType.DAY,
+                datetime.date.today() + datetime.timedelta(days=days),
+            )
+        elif tag.startswith("days-"):
+            days = int(tag.split("-")[-1])
+            return Tag(TagType.DAYS, datetime.date.today(), days)
+        raise ValueError(tag)
+
+    @classmethod
+    def create_tag(
+        cls,
+        tag_type: TagType,
+        date: datetime.date,
+        day: int = 0,
+        days: int = 10,
+    ) -> Tag:
+        if tag_type == TagType.DAY:
+            return Tag(tag_type, date + datetime.timedelta(days=day))
+        if tag_type == TagType.DAYS:
+            return Tag(tag_type, date, days)
+        raise ValueError(tag_type)

weather/app/route/view/__init__.py

@@ -6,10 +6,10 @@ from fastapi.responses import HTMLResponse, RedirectResponse
 from fastapi.staticfiles import StaticFiles
 from fastapi.templating import Jinja2Templates
 
-from gismeteo import datehelp
 from gismeteo.location import LOCATION_BUNDLE
 from gismeteo.mock import MOCK_DATA
 from weather.api import WeatherApi
+from weather.app.route.util import TagType, TagUtil
 from weather.model import WeatherResponse
 
 from .filters import cloudness_icon, wind_direction_icon
@@ -27,6 +27,7 @@ def mount(app: FastAPI):
             request=request,
             name="weather.html",
             context={
+                "tag_util": TagUtil,
                 "datetime": datetime,
                 "response": response,
             },
@@ -48,7 +49,7 @@ def mount(app: FastAPI):
 
     @app.get("/weather/{location}", response_class=RedirectResponse)
     async def get_weather_default(location: str):
-        return RedirectResponse(f"{location}/day/{datetime.date.today()}")
+        return RedirectResponse(f"{location}/tag/today")
 
     @app.get("/weather/{location}/day/mock", response_class=HTMLResponse)
     async def get_weather_day_mock(request: Request):
@@ -71,3 +72,15 @@ def mount(app: FastAPI):
         weather_api: WeatherApi = request.app.state.weather_api
         response = await weather_api.get_days(location, days)
         return build_weather_response(request, response)
+
+    @app.get("/weather/{location}/tag/{tag}", response_class=HTMLResponse)
+    async def get_weather_tag(request: Request, location: str, tag: str):
+        tag_value = TagUtil.parse_tag(tag)
+        weather_api: WeatherApi = request.app.state.weather_api
+        if tag_value.type == TagType.DAY:
+            response = await weather_api.get_day(location, tag_value.date)
+        elif tag_value.type == TagType.DAYS:
+            response = await weather_api.get_days(location, tag_value.days)
+        else:
+            raise ValueError(tag)
+        return build_weather_response(request, response)

weather/app/route/view/templates/weather.html

@@ -19,12 +19,12 @@
     <h3>
         {% if response.period == 'day' %}
         <a class="button {{'disabled' if response.date == datetime.date.today() else ''}}"
-           href="{{response.date - datetime.timedelta(days=1)}}">⬅️</a>
+           href="../tag/{{tag_util.create_tag('day', response.date, -1)}}">⬅️</a>
         <a class="button"
-           href="../days/10">⬆️</a>
+           href="../tag/days-10">⬆️</a>
         <span>{{response.location}} | {{response.date.strftime('%a, %d %B %Y')}}</span>
         <a class="button"
-           href="{{response.date + datetime.timedelta(days=1)}}">➡️</a>
+           href="../tag/{{tag_util.create_tag('day', response.date, 1)}}">➡️</a>
         {% endif %}
         {% if response.period == 'days' %}
         <span>{{response.location}} | {{response.date.strftime('%a, %d %B %Y')}}</span>
@@ -42,9 +42,12 @@
                 </td>
                 {% endif %}
                 {% if response.period == 'days' %}
-                <td
-                    class="date {{'now' if value.date.date() == datetime.date.today() else ''}}">
-                    <span class="value"><a href="../day/{{value.date.date()}}">{{value.date.strftime('%a %d')}}</a></span>
+                <td class="date {{'now' if value.date.date() == datetime.date.today() else ''}}">
+                    <span class="value">
+                        <a href="../tag/{{tag_util.create_tag('day', value.date.date())}}">
+                            {{value.date.strftime('%a %d')}}
+                        </a>
+                    </span>
                 </td>
                 {% endif %}
                 {% endfor %}