Enhance restclient and add tests for new api methods

docs/rest-api.md

@@ -145,6 +145,12 @@ python3 scripts/rest_client.py help
 ``` output
 Possible commands:
 
+available_pairs
+	Return available pair (backtest data) based on timeframe / stake_currency selection
+
+        :param timeframe: Only pairs with this timeframe available.
+        :param stake_currency: Only pairs that include this timeframe
+
 balance
 	Get the account balance.
 
@@ -184,9 +190,27 @@ logs
 
         :param limit: Limits log messages to the last <limit> logs. No limit to get all the trades.
 
+pair_candles
+	Return live dataframe for <pair><timeframe>.
+
+        :param pair: Pair to get data for
+        :param timeframe: Only pairs with this timeframe available.
+        :param limit: Limit result to the last n candles.
+
+pair_history
+	Return historic, analyzed dataframe
+
+        :param pair: Pair to get data for
+        :param timeframe: Only pairs with this timeframe available.
+        :param strategy: Strategy to analyze and get values for
+        :param timerange: Timerange to get data for (same format than --timerange endpoints)
+
 performance
 	Return the performance of the different coins.
 
+plot_config
+	Return plot configuration if the strategy defines one.
+
 profit
 	Return the profit summary.
 
@@ -209,6 +233,9 @@ stop
 stopbuy
 	Stop buying (but handle sells gracefully). Use `reload_config` to reset.
 
+strategies
+	Lists available strategies
+
 trades
 	Return trades history.
 
@@ -220,7 +247,6 @@ version
 whitelist
 	Show the current whitelist.
 
-
 ```
 
 ## Advanced API usage using JWT tokens

freqtrade/rpc/api_server.py

@@ -166,8 +166,8 @@ class ApiServer(RPC):
         """ Helper function to jsonify object for a webserver """
         return jsonify(return_value)
 
-    def rest_error(self, error_msg):
-        return jsonify({"error": error_msg}), 502
+    def rest_error(self, error_msg, error_code=502):
+        return jsonify({"error": error_msg}), error_code
 
     def register_rest_rpc_urls(self):
         """
@@ -531,6 +531,8 @@ class ApiServer(RPC):
         pair = request.args.get("pair")
         timeframe = request.args.get("timeframe")
         limit = request.args.get("limit", type=int)
+        if not pair or not timeframe:
+            return self.rest_error("Mandatory parameter missing.", 400)
 
         results = self._analysed_dataframe(pair, timeframe, limit)
         return self.rest_dump(results)
@@ -556,7 +558,7 @@ class ApiServer(RPC):
         strategy = request.args.get("strategy")
 
         if not pair or not timeframe or not timerange or not strategy:
-            return self.rest_error("Mandatory parameter missing.")
+            return self.rest_error("Mandatory parameter missing.", 400)
 
         config = deepcopy(self._config)
         config.update({

scripts/rest_client.py

@@ -224,6 +224,62 @@ class FtRestClient():
 
         return self._post("forcesell", data={"tradeid": tradeid})
 
+    def strategies(self):
+        """Lists available strategies
+
+        :return: json object
+        """
+        return self._get("strategies")
+
+    def plot_config(self):
+        """Return plot configuration if the strategy defines one.
+
+        :return: json object
+        """
+        return self._get("plot_config")
+
+    def available_pairs(self, timeframe=None, stake_currency=None):
+        """Return available pair (backtest data) based on timeframe / stake_currency selection
+
+        :param timeframe: Only pairs with this timeframe available.
+        :param stake_currency: Only pairs that include this timeframe
+        :return: json object
+        """
+        return self._get("available_pairs", params={
+            "stake_currency": stake_currency if timeframe else '',
+            "timeframe": timeframe if timeframe else '',
+        })
+
+    def pair_candles(self, pair, timeframe, limit=None):
+        """Return live dataframe for <pair><timeframe>.
+
+        :param pair: Pair to get data for
+        :param timeframe: Only pairs with this timeframe available.
+        :param limit: Limit result to the last n candles.
+        :return: json object
+        """
+        return self._get("available_pairs", params={
+            "pair": pair,
+            "timeframe": timeframe,
+            "limit": limit,
+        })
+
+    def pair_history(self, pair, timeframe, strategy, timerange=None):
+        """Return historic, analyzed dataframe
+
+        :param pair: Pair to get data for
+        :param timeframe: Only pairs with this timeframe available.
+        :param strategy: Strategy to analyze and get values for
+        :param timerange: Timerange to get data for (same format than --timerange endpoints)
+        :return: json object
+        """
+        return self._get("pair_history", params={
+            "pair": pair,
+            "timeframe": timeframe,
+            "strategy": strategy,
+            "timerange": timerange if timerange else '',
+        })
+
 
 def add_arguments():
     parser = argparse.ArgumentParser()

tests/rpc/test_rpc_apiserver.py

@@ -818,6 +818,16 @@ def test_api_pair_candles(botclient, ohlcv_history):
     timeframe = '5m'
     amount = 2
 
+    # No pair
+    rc = client_get(client,
+                    f"{BASE_URI}/pair_candles?limit={amount}&timeframe={timeframe}")
+    assert_response(rc, 400)
+
+    # No timeframe
+    rc = client_get(client,
+                    f"{BASE_URI}/pair_candles?pair=XRP%2FBTC")
+    assert_response(rc, 400)
+
     rc = client_get(client,
                     f"{BASE_URI}/pair_candles?limit={amount}&pair=XRP%2FBTC&timeframe={timeframe}")
     assert_response(rc)