Complete rewrite using config flow

.github/CODEOWNERS

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+.github/* @JohNan

.github/delete-merged-branch-config.yml

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+exclude: 
+  - master
+  - next

.github/release-drafter.yml

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+name-template: 'v$RESOLVED_VERSION 🌈'
+tag-template: 'v$RESOLVED_VERSION'
+change-template: '- #$NUMBER $TITLE @$AUTHOR'
+sort-direction: ascending
+categories:
+  - title: '🚀 Features'
+    labels:
+      - 'feature'
+      - 'enhancement'
+
+  - title: '🐛 Bug Fixes'
+    labels:
+      - 'fix'
+      - 'bugfix'
+      - 'bug'
+
+  - title: '🧰 Maintenance'
+    label: 'chore'
+
+version-resolver:
+  major:
+    labels:
+      - 'major'
+  minor:
+    labels:
+      - 'minor'
+  patch:
+    labels:
+      - 'patch'
+  default: patch
+template: |
+  ## Changes
+
+  $CHANGES
+
+  ## Thank you so much for helping out to keep this integration awesome
+  $CONTRIBUTORS  

.github/workflows/cron.yaml

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+name: "Cron actions 16:30 every 4 days"
+on:
+  schedule:
+    - cron:  '30 16 */4 * *'
+
+jobs:
+  validate-hassfest:
+    name: With hassfest
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v2
+
+      - name: Hassfest validation
+        uses: home-assistant/actions/hassfest@master
+
+  validate-hacs:
+    name: With HACS action
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v2
+
+      - name: HACS Validation
+        uses: hacs/action@main
+        with:
+          category: integration
+          comment: False

.github/workflows/release-drafter.yaml

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+name: Release Drafter
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  update_release_draft:
+    name: Update release draft
+    runs-on: ubuntu-latest
+    steps:
+      - name: Create Release
+        uses: release-drafter/release-drafter@v5
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+

.github/workflows/release.yaml

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+name: Release
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  release_zip_file:
+    name: Prepare release asset
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v2
+
+      - name: Get version
+        id: version
+        uses: home-assistant/actions/helpers/version@master
+
+      - name: "Set version number"
+        run: |
+          python3 ${{ github.workspace }}/manage/update_manifest.py --version ${{ steps.version.outputs.version }}
+
+      - name: Create zip
+        run: |
+          cd custom_components/pollenprognos
+          zip pollenprognos.zip -r ./
+
+      - name: Upload zip to release
+        uses: svenstaro/upload-release-action@v1-release
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: ./custom_components/pollenprognos/pollenprognos.zip
+          asset_name: pollenprognos.zip
+          tag: ${{ github.ref }}
+          overwrite: true

.github/workflows/validate.yaml

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+name: "Validate"
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  validate-hassfest:
+    name: With hassfest
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v2
+
+      - name: Hassfest validation
+        uses: home-assistant/actions/hassfest@master
+
+  validate-hacs:
+    name: With HACS action
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v2
+
+      - name: HACS Validation
+        uses: hacs/action@main
+        with:
+          category: integration
+          comment: True

.github/workflows/validate_pr.yaml

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+name: "Validate"
+
+on:
+  pull_request_target:
+   types: [opened, labeled, unlabeled, synchronize]
+
+jobs:
+  validate-labels:
+    name: With PR label action
+    runs-on: ubuntu-latest
+    steps:
+      - name: PR Label Validation
+        uses: jesusvasquez333/[email protected]
+        with:
+          github-token: '${{ secrets.GITHUB_TOKEN }}'
+          valid-labels: 'bug, enhancement'
+          invalid-labels: 'help wanted, invalid, question'
+          pull-request-number: '${{ github.event.pull_request.number }}'
+          disable-reviews: true

README.md

@@ -1,62 +1,20 @@
-# Home Assistant Pollennivå
+# Home Assistant Pollenprognos
 
 Support for getting current pollen levels from Pollenkollen.se
-Visit https://pollenkoll.se/pollenprognos/ to find available cities
-Visit https://pollenkoll.se/pollenprognos-ostersund/ to find available allergens
 
-Available states:
+### Install with HACS (recommended)
+Add the url to the repository as a custom integration.
 
-```
-STATES = {
-    "i.h.": 0,
-    "L": 1,
-    "L-M": 2,
-    "M": 3,
-    "M-H": 4,
-    "H": 5,
-    "H-H+": 6
-}
-``` 
-
-Place the folder `pollenniva` in `<HA_CONFIG_DIR>/custom_components`
-Add configuration to your `configuration.yaml`
-
-This will create sensors named `senson.pollenniva_CITY_ALLERGEN_day_[0-3]` and the state will be the current level of that allergen.
-
-Example configuration
-
-```
-sensor:
-  - platform: pollenniva
-    scan_interval: 14400 # (default=14400 seconds (4 hours), optional)
-    state_as_string: false # (default=false, optional, show states as strings as per STATES below)
-    sensors:
-      - city: Stockholm
-        days_to_track: 4 # (default=4, values 1-4, optional)
-        allergens:
-          - Gräs
-          - Hassel
-      - city: Östersund
-        allergens:
-          - Hassel
-```
+### Configure
+This integration can be configured via the Home Assistant frontend.
 
+- Go to **Configuration** -> **Integrations**.
+- Click on the `+` in the bottom right corner to add a new integration.
+- Search and select the **Pollenprognos** integration form the list.
+- Follow the instruction on screen to add the sensors.
 
 ### Custom card for Lovelace
 Custom card for Lovelace can be found here:
 https://github.com/isabellaalstrom/pollenkoll-card
 
 <img src="https://github.com/isabellaalstrom/pollenkoll-card/blob/master/pollenkoll-card.png" alt="Pollenkoll Lovelace Card" />
-
-### Automatic updates
-
-For update check of this sensor, add the following to your configuration.yaml. For more information, see [custom_updater](https://github.com/custom-components/custom_updater)
-
-Example configuration
-```
-custom_updater:
-  track:
-    - components
-  component_urls:
-    - https://raw.githubusercontent.com/JohNan/home-assistant-pollenkoll/master/custom_updater.json
-```

custom_component/pollenprognos/__init__.py

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+"""Pollenprognos Custom Component."""
+import asyncio
+import logging
+from datetime import timedelta, datetime
+
+from .api import PollenApi
+from .const import DOMAIN, PLATFORMS
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant, Config
+from homeassistant.exceptions import ConfigEntryNotReady
+from homeassistant.helpers.aiohttp_client import async_get_clientsession
+from homeassistant.helpers.update_coordinator import UpdateFailed, DataUpdateCoordinator
+
+SCAN_INTERVAL = timedelta(hours=4)
+
+_LOGGER: logging.Logger = logging.getLogger(__package__)
+
+
+async def async_setup(hass: HomeAssistant, config: Config):
+    """Set up this integration using YAML is not supported."""
+    return True
+
+
+async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry):
+    """Set up this integration using UI."""
+    if hass.data.get(DOMAIN) is None:
+        hass.data.setdefault(DOMAIN, {})
+
+    session = async_get_clientsession(hass)
+    client = PollenApi(session)
+
+    coordinator = PollenprognosDataUpdateCoordinator(hass, client=client)
+    await coordinator.async_refresh()
+
+    if not coordinator.last_update_success:
+        raise ConfigEntryNotReady
+
+    hass.data[DOMAIN][entry.entry_id] = coordinator
+
+    for platform in PLATFORMS:
+        if entry.options.get(platform, True):
+            coordinator.platforms.append(platform)
+            hass.async_add_job(
+                hass.config_entries.async_forward_entry_setup(entry, platform)
+            )
+
+    entry.add_update_listener(async_reload_entry)
+    return True
+
+
+class PollenprognosDataUpdateCoordinator(DataUpdateCoordinator):
+    """Class to manage fetching data from the API."""
+
+    def __init__(
+        self, hass: HomeAssistant, client: PollenApi
+    ) -> None:
+        """Initialize."""
+        self.api = client
+        self.platforms = []
+        self.last_updated = None
+
+        super().__init__(hass, _LOGGER, name=DOMAIN, update_interval=SCAN_INTERVAL)
+
+    async def _async_update_data(self):
+        """Update data via library."""
+        try:
+            data = await self.api.async_get_data()
+            self.last_updated = datetime.now()
+            return data
+        except Exception as exception:
+            raise UpdateFailed() from exception
+
+
+async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+    """Handle removal of an entry."""
+    coordinator = hass.data[DOMAIN][entry.entry_id]
+    unloaded = all(
+        await asyncio.gather(
+            *[
+                hass.config_entries.async_forward_entry_unload(entry, platform)
+                for platform in PLATFORMS
+                if platform in coordinator.platforms
+            ]
+        )
+    )
+    if unloaded:
+        hass.data[DOMAIN].pop(entry.entry_id)
+
+    return unloaded
+
+
+async def async_reload_entry(hass: HomeAssistant, entry: ConfigEntry) -> None:
+    """Reload config entry."""
+    await async_unload_entry(hass, entry)
+    await async_setup_entry(hass, entry)