fix UpdateFeed xml parsing; fix ErrorCount magic number

Change-Id: Ib7780ab7a82fe0ee0d31e11ba88d65d0fae09499

bot/controller.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"fmt"
 	"github.com/indes/flowerss-bot/bot/fsm"
+	"github.com/indes/flowerss-bot/config"
 	"github.com/indes/flowerss-bot/model"
 	tb "gopkg.in/tucnak/telebot.v2"
 	"html/template"
@@ -92,7 +93,7 @@ func toggleCtrlButtons(c *tb.Callback, action string) {
 		Text:   "暂停更新",
 	}
 
-	if source.ErrorCount >= 100 {
+	if source.ErrorCount >= config.ErrorThreshold {
 		toggleEnabledKey.Text = "重启更新"
 	}
 
@@ -366,7 +367,7 @@ func setFeedItemBtnCtr(c *tb.Callback) {
 		Text:   "暂停更新",
 	}
 
-	if source.ErrorCount >= 100 {
+	if source.ErrorCount >= config.ErrorThreshold {
 		toggleEnabledKey.Text = "重启更新"
 	}
 
@@ -768,7 +769,7 @@ func textCtr(m *tb.Message) {
 					Text:   "暂停更新",
 				}
 
-				if source.ErrorCount >= 100 {
+				if source.ErrorCount >= config.ErrorThreshold {
 					toggleEnabledKey.Text = "重启更新"
 				}
 

model/source.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"github.com/SlyMarbo/rss"
 	"github.com/indes/flowerss-bot/config"
+	"github.com/jinzhu/gorm"
 	"io/ioutil"
 	"log"
 	"net/http"
@@ -44,34 +45,37 @@ func GetSourceByUrl(url string) (*Source, error) {
 	return &source, nil
 }
 
+func fetchFunc(url string) (resp *http.Response, err error) {
+	resp, err = http.Get(url)
+	if err != nil {
+		return nil, err
+	}
+	var data []byte
+	if data, err = ioutil.ReadAll(resp.Body); err != nil {
+		_ = resp.Body.Close()
+		return nil, err
+	}
+	_ = resp.Body.Close()
+	resp.Body = ioutil.NopCloser(strings.NewReader(strings.Map(func(r rune) rune {
+		if unicode.IsPrint(r) {
+			return r
+		}
+		return -1
+	}, string(data))))
+	return
+}
+
 func FindOrNewSourceByUrl(url string) (*Source, error) {
 	var source Source
 	db := getConnect()
 	defer db.Close()
 
 	if err := db.Where("link=?", url).Find(&source).Error; err != nil {
-		if err.Error() == "record not found" {
+		if err == gorm.ErrRecordNotFound {
 			source.Link = url
 
 			// parsing task
-			feed, err := rss.FetchByFunc(func(url string) (resp *http.Response, err error) {
-				resp, err = http.Get(url)
-				if err != nil {
-					return nil, err
-				}
-				defer resp.Body.Close()
-				var data []byte
-				if data, err = ioutil.ReadAll(resp.Body); err != nil {
-					return nil, err
-				}
-				resp.Body = ioutil.NopCloser(strings.NewReader(strings.Map(func(r rune) rune {
-					if unicode.IsPrint(r) {
-						return r
-					}
-					return -1
-				}, string(data))))
-				return
-			}, url)
+			feed, err := rss.FetchByFunc(fetchFunc, url)
 
 			if err != nil {
 				return nil, fmt.Errorf("Feed 抓取错误 %v", err)
@@ -124,7 +128,7 @@ func (s *Source) IsSubscribed() bool {
 
 func (s *Source) GetNewContents() ([]Content, error) {
 	var newContents []Content
-	feed, err := rss.Fetch(s.Link)
+	feed, err := rss.FetchByFunc(fetchFunc, s.Link)
 	if err != nil {
 		log.Println("Unable to make request: ", err, " ", s.Link)
 		s.AddErrorCount()

model/subscribe.go

@@ -1,6 +1,9 @@
 package model
 
-import "errors"
+import (
+	"errors"
+	"github.com/indes/flowerss-bot/config"
+)
 
 type Subscribe struct {
 	ID                 uint `gorm:"primary_key;AUTO_INCREMENT"`
@@ -190,10 +193,10 @@ func (s *Subscribe) ToggleTelegraph() error {
 }
 
 func (s *Source) ToggleEnabled() error {
-	if s.ErrorCount >= 100 {
+	if s.ErrorCount >= config.ErrorThreshold {
 		s.ErrorCount = 0
 	} else {
-		s.ErrorCount = 100
+		s.ErrorCount = config.ErrorThreshold
 	}
 
 	///TODO a hack for save source changes