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searxng/searx/engines/currency_convert.py

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+# SPDX-License-Identifier: AGPL-3.0-or-later
+# lint: pylint
+"""Currency convert (DuckDuckGo)
+"""
+
+import json
+
+# about
+about = {
+    "website": 'https://duckduckgo.com/',
+    "wikidata_id": 'Q12805',
+    "official_api_documentation": 'https://duckduckgo.com/api',
+    "use_official_api": False,
+    "require_api_key": False,
+    "results": 'JSONP',
+    "description": "Service from DuckDuckGo.",
+}
+
+engine_type = 'online_currency'
+categories = []
+base_url = 'https://duckduckgo.com/js/spice/currency/1/{0}/{1}'
+weight = 100
+
+https_support = True
+
+
+def request(_query, params):
+    params['url'] = base_url.format(params['from'], params['to'])
+    return params
+
+
+def response(resp):
+    """remove first and last lines to get only json"""
+    json_resp = resp.text[resp.text.find('\n') + 1 : resp.text.rfind('\n') - 2]
+    results = []
+    try:
+        conversion_rate = float(json.loads(json_resp)['conversion']['converted-amount'])
+    except ValueError:
+        return results
+    answer = '{0} {1} = {2} {3}, 1 {1} ({5}) = {4} {3} ({6})'.format(
+        resp.search_params['amount'],
+        resp.search_params['from'],
+        resp.search_params['amount'] * conversion_rate,
+        resp.search_params['to'],
+        conversion_rate,
+        resp.search_params['from_name'],
+        resp.search_params['to_name'],
+    )
+
+    url = 'https://duckduckgo.com/js/spice/currency/1/{0}/{1}'.format(
+        resp.search_params['from'].upper(), resp.search_params['to']
+    )
+
+    results.append({'answer': answer, 'url': url})
+
+    return results