Fixed bug with Reader exhaustion

cmd/go-mtg-vk/main.go

@@ -1,7 +1,9 @@
 package main
 
 import (
+	"encoding/json"
 	"gitlab.com/flygrounder/go-mtg-vk/internal/cardsinfo"
+	"io/ioutil"
 	"log"
 	"math/rand"
 	"os"
@@ -20,6 +22,9 @@ func main() {
 
 	groupId, _ := strconv.ParseInt(os.Getenv("VK_GROUP_ID"), 10, 64)
 	dict, _ := os.Open("./assets/additional_cards.json")
+	dictBytes, _ := ioutil.ReadAll(dict)
+	var dictMap map[string]string
+	_ = json.Unmarshal(dictBytes, &dictMap)
 	handler := vk.Handler{
 		Sender: &vk.ApiSender{
 			Token: os.Getenv("VK_TOKEN"),
@@ -30,7 +35,7 @@ func main() {
 		ConfirmationString: os.Getenv("VK_CONFIRMATION_STRING"),
 		Cache:              caching.NewClient("redis:6379", "", time.Hour*24, 0),
 		InfoFetcher: &cardsinfo.Fetcher{
-			Dict: dict,
+			Dict: dictMap,
 		},
 	}
 

internal/cardsinfo/fetcher.go

@@ -1,7 +1,5 @@
 package cardsinfo
 
-import "io"
-
 type Fetcher struct {
-	Dict io.Reader
+	Dict map[string]string
 }

internal/cardsinfo/names.go

@@ -23,7 +23,7 @@ func (f *Fetcher) GetOriginalName(name string) string {
 	path := scryfallUrl + "/cards/named?fuzzy=" + applyFilters(name)
 	result := getCardByUrl(path)
 	if result == "" && f.Dict != nil {
-		result, _ = dicttranslate.FindFromReader(name, f.Dict, 5)
+		result, _ = dicttranslate.Find(name, f.Dict, 5)
 	}
 	return result
 }

internal/cardsinfo/names_test.go

@@ -1,11 +1,9 @@
 package cardsinfo
 
 import (
-	"encoding/json"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/h2non/gock.v1"
 	"net/http"
-	"strings"
 	"testing"
 )
 
@@ -31,19 +29,19 @@ func TestGetOriginalName_Scryfall(t *testing.T) {
 	assert.Equal(t, "Result Card", name)
 }
 
-func TestGetOriginalName_Dict(t *testing.T) {
+func TestGetOriginalName_DictTwice(t *testing.T) {
 	defer gock.Off()
 
-	gock.New(scryfallUrl + "/cards/named?fuzzy=card").Reply(http.StatusOK).JSON(card{})
-	serialized, _ := json.Marshal(map[string]string{
-		"card": "Card",
-	})
-	dict := strings.NewReader(string(serialized))
+	gock.New(scryfallUrl + "/cards/named?fuzzy=card").Persist().Reply(http.StatusOK).JSON(card{})
 	f := &Fetcher{
-		Dict: dict,
+		Dict: map[string]string{
+			"card": "Card",
+		},
 	}
 	name := f.GetOriginalName("card")
 	assert.Equal(t, "Card", name)
+	name = f.GetOriginalName("card")
+	assert.Equal(t, "Card", name)
 }
 
 func TestGetOriginalName_BadJson(t *testing.T) {

internal/dicttranslate/find.go

@@ -1,12 +1,6 @@
 package dicttranslate
 
-import (
-	"encoding/json"
-	"io"
-	"io/ioutil"
-)
-
-func find(query string, dict map[string]string, maxDist int) (string, bool) {
+func Find(query string, dict map[string]string, maxDist int) (string, bool) {
 	var keys []string
 	for i := range dict {
 		keys = append(keys, i)
@@ -14,10 +8,3 @@ func find(query string, dict map[string]string, maxDist int) (string, bool) {
 	key, f := match(query, keys, maxDist)
 	return dict[key], f
 }
-
-func FindFromReader(query string, reader io.Reader, maxDist int) (string, bool) {
-	content, _ := ioutil.ReadAll(reader)
-	dict := map[string]string{}
-	_ = json.Unmarshal(content, &dict)
-	return find(query, dict, maxDist)
-}

internal/dicttranslate/find_test.go

@@ -2,13 +2,12 @@ package dicttranslate
 
 import (
 	"github.com/stretchr/testify/assert"
-	"strings"
 	"testing"
 )
 
 func TestFindEmpty(t *testing.T) {
 	dict := map[string]string{}
-	_, f := find("", dict, 0)
+	_, f := Find("", dict, 0)
 	assert.False(t, f)
 }
 
@@ -16,18 +15,7 @@ func TestFindEntry(t *testing.T) {
 	dict := map[string]string{
 		"entry": "value",
 	}
-	val, f := find("entry", dict, 0)
+	val, f := Find("entry", dict, 0)
 	assert.True(t, f)
 	assert.Equal(t, "value", val)
 }
-
-func TestFindFromReaderFail(t *testing.T) {
-	_, f := FindFromReader("entry", strings.NewReader("{}"), 0)
-	assert.False(t, f)
-}
-
-func TestFindFromReaderSuccess(t *testing.T) {
-	value, f := FindFromReader("entry", strings.NewReader("{\"entry\":\"value\"}"), 0)
-	assert.True(t, f)
-	assert.Equal(t, "value", value)
-}