add symbol search

.gitignore

@@ -0,0 +1 @@
+/.idea

av.go

@@ -1,6 +1,8 @@
 package av
 
 import (
+	"encoding/json"
+	"io/ioutil"
 	"net/http"
 	"net/url"
 	"time"
@@ -21,10 +23,13 @@ const (
 	queryMarket     = "market"
 	queryEndpoint   = "function"
 	queryInterval   = "interval"
+	queryKeywords   = "keywords"
 
 	valueCompact                  = "compact"
-	valueJson                     = "csv"
+	valueCsv                      = "csv"
+	valueJson                     = "json"
 	valueDigitcalCurrencyEndpoint = "DIGITAL_CURRENCY_INTRADAY"
+	valueSymbolSearchEndpoint     = "SYMBOL_SEARCH"
 
 	pathQuery = "query"
 
@@ -94,7 +99,7 @@ func (c *Client) buildRequestPath(params map[string]string) *url.URL {
 	// base parameters
 	query := endpoint.Query()
 	query.Set(queryApiKey, c.apiKey)
-	query.Set(queryDataType, valueJson)
+	query.Set(queryDataType, valueCsv)
 	query.Set(queryOutputSize, valueCompact)
 
 	// additional parameters
@@ -153,3 +158,29 @@ func (c *Client) DigitalCurrency(digital, physical string) ([]*DigitalCurrencySe
 	defer response.Body.Close()
 	return parseDigitalCurrencySeriesData(response.Body)
 }
+
+func (c *Client) SymbolSearch(keywords string) (*SymbolMatches, error) {
+	endpoint := c.buildRequestPath(map[string]string{
+		queryEndpoint: valueSymbolSearchEndpoint,
+		queryDataType: valueJson,
+		queryKeywords: keywords,
+	})
+
+	response, err := c.conn.Request(endpoint)
+
+	if err != nil {
+		return nil, err
+	}
+
+	defer response.Body.Close()
+	body, err := ioutil.ReadAll(response.Body)
+
+	if err != nil {
+		return nil, err
+	}
+
+	var matches *SymbolMatches
+	json.Unmarshal(body, &matches)
+
+	return matches, nil
+}

symbol_matches.go

@@ -0,0 +1,17 @@
+package av
+
+type SymbolMatches struct {
+	BestMatches []*SymbolMatch `json:"bestMatches"`
+}
+
+type SymbolMatch struct {
+	Symbol      string  `json:"1. symbol"`
+	Name        string  `json:"2. name"`
+	Type        string  `json:"3. type"`
+	Region      string  `json:"4. region"`
+	MarketOpen  string  `json:"5. marketOpen"`
+	MarketClose string  `json:"6. marketClose"`
+	Timezone    string  `json:"7. timezone"`
+	Currency    string  `json:"8. currency"`
+	MatchScore  float64 `json:"9. matchScore,string"`
+}