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main.go
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main.go
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package main
import (
"crypto/tls"
"encoding/json"
"fmt"
"github.com/urfave/cli"
"golang.org/x/exp/slices"
"sort"
"strings"
"github.com/snabb/sitemap"
"golang.org/x/exp/maps"
"io"
"log"
"net/http"
"os"
"strconv"
"time"
)
type URLShareCnt struct {
URL string
Twitter ShareCnt
FaceBook ShareCnt
Hatebu ShareCnt
Pocket ShareCnt
Feedly *ShareCnt `json:",omitempty"`
}
type ShareCnt struct {
Count int
FetchAt time.Time
}
type PocketResponse struct {
Saves int `json:"saves"`
}
type FaceBookResponse struct {
OgObject *OgObject `json:"og_object"`
ID string `json:"id"`
}
func (c FaceBookResponse) Likes() int {
if c.OgObject == nil {
return 0
}
if c.OgObject.Engagement == nil {
return 0
}
return c.OgObject.Engagement.Count
}
type OgObject struct {
Engagement *Engagement `json:"engagement"`
ID string `json:"id"`
}
type Engagement struct {
Count int `json:"count"`
SocialSentence string `json:"social_sentence"`
}
type FeedlyResponse struct {
Description string `json:"description"`
Language string `json:"language"`
ID string `json:"id"`
Title string `json:"title"`
FeedID string `json:"feedId"`
Website string `json:"website"`
Topics []string `json:"topics"`
Subscribers int `json:"subscribers"`
Velocity float64 `json:"velocity"`
Updated int64 `json:"updated"`
IconURL string `json:"iconUrl"`
Partial bool `json:"partial"`
CoverURL string `json:"coverUrl"`
VisualURL string `json:"visualUrl"`
EstimatedEngagement int `json:"estimatedEngagement"`
}
var hc = &http.Client{Transport: &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}}
func main() {
app := &cli.App{
Name: "sns share count",
Usage: "snssharecount <URL>",
Flags: []cli.Flag{
&cli.StringFlag{
Name: "disable",
Value: "",
Usage: "disable refresh sns count. eg) disable=facebook,hatebu,pocket",
},
&cli.IntFlag{
Name: "days",
Value: 14,
Usage: "enable to reset sns count before days of this flag",
},
},
Action: func(cCtx *cli.Context) error {
snsCacheMap, err := readSNSCacheJSON()
if err != nil {
return err
}
postSitemap, err := fetchSiteMap()
if err != nil {
return err
}
// 公開後14日は更新する
now := time.Now()
resetMinute := now.Add(-1 * time.Minute)
cacheResetAt := now.AddDate(0, 0, -1*cCtx.Int("days"))
disables := strings.Split(cCtx.String("disable"), ",")
defaultCnt := ShareCnt{
Count: 0,
}
for _, v := range postSitemap.URLs {
if v.Loc == "https://future-architect.github.io/" {
feedly, err := fetchFeedly()
if err != nil {
return err
}
cache := snsCacheMap[v.Loc]
cache.Feedly = &ShareCnt{
Count: feedly.Subscribers,
FetchAt: now,
}
snsCacheMap[v.Loc] = cache
}
if v.LastMod != nil && v.LastMod.After(cacheResetAt) {
// 記事の更新日がリセットより後ろであればSNSシェア数を更新
cache, ok := snsCacheMap[v.Loc]
if !ok {
cache = URLShareCnt{
URL: v.Loc,
Twitter: defaultCnt,
FaceBook: defaultCnt,
Hatebu: defaultCnt,
Pocket: defaultCnt,
}
}
if cache.Pocket.FetchAt.Before(resetMinute) && !slices.Contains(disables, "pocket") {
pc, err := fetchPocket(v.Loc)
if err != nil {
return err
}
cache.Pocket = ShareCnt{
Count: pc.Saves,
FetchAt: now,
}
}
if cache.Hatebu.FetchAt.Before(resetMinute) && !slices.Contains(disables, "hatebu") {
hatebuCnt, err := fetchHatebu(v.Loc)
if err != nil {
return err
}
cache.Hatebu = ShareCnt{
Count: hatebuCnt,
FetchAt: now,
}
}
if cache.FaceBook.FetchAt.Before(resetMinute) && !slices.Contains(disables, "facebook") {
fbCnt, err := fetchFacebook(v.Loc)
if err != nil {
return err
}
cache.FaceBook = ShareCnt{
Count: fbCnt.Likes(),
FetchAt: now,
}
}
snsCacheMap[v.Loc] = cache
}
}
shares := maps.Values(snsCacheMap)
sort.SliceStable(shares, func(i, j int) bool {
return shares[i].URL > shares[j].URL
})
marshal, err := json.MarshalIndent(shares, "", " ")
if err != nil {
panic(err)
}
fmt.Println(string(marshal))
return nil
},
}
if err := app.Run(os.Args); err != nil {
log.Fatal(err)
}
}
func fetchSiteMap() (*sitemap.Sitemap, error) {
resp, err := hc.Get("https://future-architect.github.io/post-sitemap.xml")
if err != nil {
return nil, fmt.Errorf("get post-sitemap.xml: %w", err)
}
defer resp.Body.Close()
sm := sitemap.New()
if _, err := sm.ReadFrom(resp.Body); err != nil {
return nil, fmt.Errorf("parse post-sitemap.xml: %w", err)
}
return sm, nil
}
func readSNSCacheJSON() (map[string]URLShareCnt, error) {
snsCache, err := os.Open("sns_count_cache.json")
if err != nil {
return nil, fmt.Errorf("sns_count_cache.json is not found: %w", err)
}
defer snsCache.Close()
all, err := io.ReadAll(snsCache)
if err != nil {
return nil, fmt.Errorf("read sns_count_cache.json: %w", err)
}
var shares []URLShareCnt
if err := json.Unmarshal(all, &shares); err != nil {
return nil, fmt.Errorf("unmarshal sns_count_cache.json: %w", err)
}
shareMap := make(map[string]URLShareCnt, len(shares))
for _, v := range shares {
shareMap[v.URL] = v
}
return shareMap, nil
}
func fetchFeedly() (FeedlyResponse, error) {
resp, err := hc.Get("https://cloud.feedly.com/v3/feeds/feed%2Fhttps%3A%2F%2Ffuture-architect.github.io%2Fatom.xml")
if err != nil {
return FeedlyResponse{}, fmt.Errorf("feedly: %w", err)
}
defer resp.Body.Close()
all, err := io.ReadAll(resp.Body)
if err != nil {
return FeedlyResponse{}, fmt.Errorf("read feedly response: %w", err)
}
var feedly FeedlyResponse
if err := json.Unmarshal(all, &feedly); err != nil {
return FeedlyResponse{}, fmt.Errorf("unmarshal feedly response: %w", err)
}
return feedly, nil
}
func fetchPocket(url string) (PocketResponse, error) {
req, err := http.NewRequest(http.MethodGet, "https://widgets.getpocket.com/api/saves", nil)
if err != nil {
return PocketResponse{}, fmt.Errorf("pocket request url: %w", err)
}
q := req.URL.Query()
q.Add("url", url)
req.URL.RawQuery = q.Encode()
resp, err := http.DefaultClient.Do(req)
if err != nil {
return PocketResponse{}, fmt.Errorf("pocket count: %w", err)
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
if err != nil {
return PocketResponse{}, fmt.Errorf("pocket response body: %w", err)
}
var pc PocketResponse
if err := json.Unmarshal(body, &pc); err != nil {
return PocketResponse{}, fmt.Errorf("pocket response unmarshal json: %w", err)
}
return pc, nil
}
func fetchHatebu(url string) (int, error) {
req, err := http.NewRequest(http.MethodGet, "https://bookmark.hatenaapis.com/count/entry", nil)
if err != nil {
return 0, fmt.Errorf("hatebu request url: %w", err)
}
q := req.URL.Query()
q.Add("url", url)
req.URL.RawQuery = q.Encode()
resp, err := http.DefaultClient.Do(req)
if err != nil {
return 0, fmt.Errorf("hatebu count: %w", err)
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
if err != nil {
return 0, fmt.Errorf("hatebu response body: %w", err)
}
bookMarkCnt, err := strconv.Atoi(string(body))
if err != nil {
return 0, fmt.Errorf("hatebu response is invalid: %w", err)
}
return bookMarkCnt, nil
}
func fetchFacebook(url string) (FaceBookResponse, error) {
req, err := http.NewRequest(http.MethodGet, "https://graph.facebook.com/v10.0/?fields=og_object{engagement}", nil)
if err != nil {
return FaceBookResponse{}, fmt.Errorf("facebook request url: %w", err)
}
q := req.URL.Query()
q.Add("id", url)
q.Add("access_token", os.Getenv("FB_TOKEN"))
req.URL.RawQuery = q.Encode()
resp, err := hc.Do(req)
if err != nil {
return FaceBookResponse{}, fmt.Errorf("facebook http get count: %w", err)
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
if err != nil {
return FaceBookResponse{}, fmt.Errorf("facebook response body: %w", err)
}
var fbc FaceBookResponse
if err := json.Unmarshal(body, &fbc); err != nil {
return FaceBookResponse{}, fmt.Errorf("facebook response unmarshal json: %w", err)
}
return fbc, nil
}