From bf3845b0931b0a528e76d233802c3b196867641d Mon Sep 17 00:00:00 2001
From: Bnyro <bnyro@tutanota.com>
Date: Thu, 28 Mar 2024 21:05:46 +0100
Subject: [PATCH] [feat] engine: implementation of Open Meteo

---
 searx/engines/open_meteo.py | 118 ++++++++++++++++++++++++++++++++++++
 searx/settings.yml          |   5 ++
 2 files changed, 123 insertions(+)
 create mode 100644 searx/engines/open_meteo.py

diff --git a/searx/engines/open_meteo.py b/searx/engines/open_meteo.py
new file mode 100644
index 000000000..66817d5c9
--- /dev/null
+++ b/searx/engines/open_meteo.py
@@ -0,0 +1,118 @@
+# SPDX-License-Identifier: AGPL-3.0-or-later
+"""Open Meteo (weather)"""
+
+from urllib.parse import urlencode, quote_plus
+from datetime import datetime
+from flask_babel import gettext
+
+from searx.network import get
+from searx.exceptions import SearxEngineAPIException
+
+about = {
+    "website": 'https://open-meteo.com',
+    "wikidata_id": None,
+    "official_api_documentation": 'https://open-meteo.com/en/docs',
+    "use_official_api": True,
+    "require_api_key": False,
+    "results": "JSON",
+}
+
+categories = ["weather"]
+
+geo_url = "https://geocoding-api.open-meteo.com"
+api_url = "https://api.open-meteo.com"
+
+data_of_interest = "temperature_2m,relative_humidity_2m,apparent_temperature,cloud_cover,pressure_msl,wind_speed_10m,wind_direction_10m"  # pylint: disable=line-too-long
+
+
+def request(query, params):
+    location_url = f"{geo_url}/v1/search?name={quote_plus(query)}"
+
+    resp = get(location_url)
+    if resp.status_code != 200:
+        raise SearxEngineAPIException("invalid geo location response code")
+
+    json_locations = resp.json().get("results", [])
+    if len(json_locations) == 0:
+        raise SearxEngineAPIException("location not found")
+
+    location = json_locations[0]
+    args = {
+        'latitude': location['latitude'],
+        'longitude': location['longitude'],
+        'timeformat': 'unixtime',
+        'format': 'json',
+        'current': data_of_interest,
+        'forecast_days': 7,
+        'hourly': data_of_interest,
+    }
+
+    params['url'] = f"{api_url}/v1/forecast?{urlencode(args)}"
+
+    return params
+
+
+def c_to_f(temperature):
+    return "%.2f" % ((temperature * 1.8) + 32)
+
+
+def get_direction(degrees):
+    if degrees < 45 or degrees >= 315:
+        return "N"
+
+    if 45 <= degrees < 135:
+        return "O"
+
+    if 135 <= degrees < 225:
+        return "S"
+
+    return "W"
+
+
+def generate_condition_table(condition):
+    res = ""
+
+    res += (
+        f"<tr><td><b>{gettext('Temperature')}</b></td>"
+        f"<td><b>{condition['temperature_2m']}°C / {c_to_f(condition['temperature_2m'])}°F</b></td></tr>"
+    )
+
+    res += (
+        f"<tr><td>{gettext('Feels like')}</td><td>{condition['apparent_temperature']}°C / "
+        f"{c_to_f(condition['apparent_temperature'])}°F</td></tr>"
+    )
+
+    res += (
+        f"<tr><td>{gettext('Wind')}</td><td>{get_direction(condition['wind_direction_10m'])}, "
+        f"{condition['wind_direction_10m']}° — "
+        f"{condition['wind_speed_10m']} km/h</td></tr>"
+    )
+
+    res += f"<tr><td>{gettext('Cloud cover')}</td><td>{condition['cloud_cover']}%</td>"
+
+    res += f"<tr><td>{gettext('Humidity')}</td><td>{condition['relative_humidity_2m']}%</td></tr>"
+
+    res += f"<tr><td>{gettext('Pressure')}</td><td>{condition['pressure_msl']}hPa</td></tr>"
+
+    return res
+
+
+def response(resp):
+    data = resp.json()
+
+    table_content = generate_condition_table(data['current'])
+
+    infobox = f"<table><tbody>{table_content}</tbody></table>"
+
+    for index, time in enumerate(data['hourly']['time']):
+        hourly_data = {}
+
+        for key in data_of_interest.split(","):
+            hourly_data[key] = data['hourly'][key][index]
+
+        table_content = generate_condition_table(hourly_data)
+
+        infobox += f"<h3>{datetime.utcfromtimestamp(time).strftime('%Y-%m-%d %H:%M')}</h3>"
+        infobox += f"<table><tbody>{table_content}</tbody></table>"
+
+    return [{'infobox': 'Open Meteo', 'content': infobox}]
diff --git a/searx/settings.yml b/searx/settings.yml
index eec2d82db..628b8cd85 100644
--- a/searx/settings.yml
+++ b/searx/settings.yml
@@ -1270,6 +1270,11 @@ engines:
       require_api_key: false
       results: JSON
 
+  - name: openmeteo
+    engine: open_meteo
+    shortcut: om
+    disabled: true
+
   # - name: opensemanticsearch
   #   engine: opensemantic
   #   shortcut: oss