add duckduckgo weather engine

1 files changed, 136 insertions, 0 deletions

diff --git a/searx/engines/duckduckgo_weather.py b/searx/engines/duckduckgo_weather.py
new file mode 100644
index 000000000..d0f34d60f
--- /dev/null
+++ b/searx/engines/duckduckgo_weather.py
@@ -0,0 +1,136 @@
+# SPDX-License-Identifier: AGPL-3.0-or-later
+# lint: pylint
+"""DuckDuckGo Weather"""
+
+from json import loads
+from urllib.parse import quote
+
+from datetime import datetime
+from flask_babel import gettext
+
+about = {
+    "website": 'https://duckduckgo.com/',
+    "wikidata_id": 'Q12805',
+    "official_api_documentation": None,
+    "use_official_api": True,
+    "require_api_key": False,
+    "results": "JSON",
+}
+
+categories = ["others"]
+
+url = "https://duckduckgo.com/js/spice/forecast/{query}/{lang}"
+
+
+def generate_condition_table(condition):
+    res = ""
+
+    res += f"<tr><td><b>{gettext('Condition')}</b></td>" f"<td><b>{condition['summary']}</b></td></tr>"
+
+    res += (
+        f"<tr><td><b>{gettext('Temperature')}</b></td>"
+        f"<td><b>{f_to_c(condition['temperature'])}°C / {condition['temperature']}°F</b></td></tr>"
+    )
+
+    res += (
+        f"<tr><td>{gettext('Feels like')}</td><td>{f_to_c(condition['apparentTemperature'])}°C / "
+        f"{condition['apparentTemperature']}°F</td></tr>"
+    )
+
+    res += (
+        f"<tr><td>{gettext('Wind')}</td><td>{condition['windBearing']}° — "
+        f"{'%.2f' % (condition['windSpeed'] * 1.6093440006147)} km/h / {condition['windSpeed']} mph</td></tr>"
+    )
+
+    res += f"<tr><td>{gettext('Visibility')}</td><td>{condition['visibility']} km</td>"
+
+    res += f"<tr><td>{gettext('Humidity')}</td><td>{condition['humidity'] * 100}%</td></tr>"
+
+    return res
+
+
+def generate_day_table(day):
+    res = ""
+
+    res += (
+        f"<tr><td>{gettext('Min temp.')}</td><td>{f_to_c(day['temperatureLow'])}°C / "
+        f"{day['temperatureLow']}°F</td></tr>"
+    )
+    res += (
+        f"<tr><td>{gettext('Max temp.')}</td><td>{f_to_c(day['temperatureHigh'])}°C / "
+        f"{day['temperatureHigh']}°F</td></tr>"
+    )
+    res += f"<tr><td>{gettext('UV index')}</td><td>{day['uvIndex']}</td></tr>"
+    res += (
+        f"<tr><td>{gettext('Sunrise')}</td><td>{datetime.fromtimestamp(day['sunriseTime']).strftime('%H:%M')}</td></tr>"
+    )
+    res += (
+        f"<tr><td>{gettext('Sunset')}</td><td>{datetime.fromtimestamp(day['sunsetTime']).strftime('%H:%M')}</td></tr>"
+    )
+
+    return res
+
+
+def request(query, params):
+    params["url"] = url.format(query=quote(query), lang=params['language'].split('-')[0])
+
+    return params
+
+
+def f_to_c(temperature):
+    return "%.2f" % ((temperature - 32) / 1.8)
+
+
+def response(resp):
+    results = []
+
+    if resp.text.strip() == "ddg_spice_forecast();":
+        return []
+
+    result = loads(resp.text[resp.text.find('\n') + 1 : resp.text.rfind('\n') - 2])
+
+    current = result["currently"]
+
+    title = result['flags']['ddg-location']
+
+    infobox = f"<h3>{gettext('Current condition')}</h3><table><tbody>"
+
+    infobox += generate_condition_table(current)
+
+    infobox += "</tbody></table>"
+
+    last_date = None
+
+    for time in result['hourly']['data']:
+        current_time = datetime.fromtimestamp(time['time'])
+
+        if last_date != current_time.date():
+            if last_date is not None:
+                infobox += "</tbody></table>"
+
+            infobox += f"<h3>{current_time.strftime('%Y-%m-%d')}</h3>"
+
+            infobox += "<table><tbody>"
+
+            for day in result['daily']['data']:
+                if datetime.fromtimestamp(day['time']).date() == current_time.date():
+                    infobox += generate_day_table(day)
+
+            infobox += "</tbody></table><table><tbody>"
+
+        last_date = current_time.date()
+
+        infobox += f"<tr><td rowspan=\"7\"><b>{current_time.strftime('%H:%M')}</b></td></tr>"
+
+        infobox += generate_condition_table(time)
+
+    infobox += "</tbody></table>"
+
+    results.append(
+        {
+            "infobox": title,
+            "content": infobox,
+        }
+    )
+
+    return results