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item.go
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item.go
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package model
import (
"context"
"fmt"
"html"
"io"
"log"
"net/http"
"net/url"
"regexp"
"strings"
"time"
"github.com/PuerkitoBio/goquery"
)
type Canonical struct {
Href string `json:"href"`
}
type Item struct {
CrawlTimeMsec string `json:"crawlTimeMsec"`
TimestampUsec string `json:"timestampUsec"`
Id string `json:"id"`
Categories []string `json:"categories"`
Title string `json:"title"`
Published int64 `json:"published"`
Updated int64 `json:"updated"`
Starred int64 `json:"starred"`
Canonical []Canonical `json:"canonical"`
Summary struct {
Direction string `json:"direction"`
Content string `json:"content"`
} `json:"summary"`
Author string `json:"author"`
Origin struct {
StreamId string `json:"streamId"`
Title string `json:"title"`
HtmlUrl string `json:"htmlUrl"`
} `json:"origin"`
}
func (it *Item) DecodeFields() {
it.Title = html.UnescapeString(it.Title)
it.Origin.Title = html.UnescapeString(it.Origin.Title)
}
func (it *Item) PatchedContent() string {
if it.shouldUnescape(it.Title) {
it.Title = html.UnescapeString(it.Title)
}
if it.shouldUnescape(it.Origin.Title) {
it.Origin.Title = html.UnescapeString(it.Origin.Title)
}
it.fullBody()
return fmt.Sprintf("%s %s %s", it.ContentHeader(), it.Summary.Content, it.ContentFooter())
}
func (it *Item) fullBody() {
uri := it.Link()
u, err := url.Parse(uri)
if err != nil {
log.Printf("cannot parse link %s", uri)
return
}
switch {
case strings.HasSuffix(u.Host, "sspai.com"):
full, err := it.grabDoc()
if err != nil {
log.Printf("cannot parse content from %s", uri)
return
}
ct := full.Find("div.article-body div.content").First()
ct.Find("*").RemoveAttr("style").RemoveAttr("class")
htm, err := ct.Html()
if err != nil {
log.Printf("cannot generate content of %s", uri)
return
}
it.Summary.Content = htm
case strings.HasSuffix(u.Host, "leimao.github.io"):
full, err := it.grabDoc()
if err != nil {
log.Printf("cannot parse content from %s", uri)
return
}
ct := full.Find("article.article div.content").First()
ct.Find("*").RemoveAttr("style").RemoveAttr("class")
htm, err := ct.Html()
if err != nil {
log.Printf("cannot generate content of %s", uri)
return
}
it.Summary.Content = htm
case strings.HasSuffix(u.Host, "thoughtworks.cn"):
full, err := it.grabDoc()
if err != nil {
log.Printf("cannot parse content from %s", uri)
return
}
ct := full.Find("article.post div.entry-wrap").First()
ct.Find("*").RemoveAttr("style").RemoveAttr("class")
htm, err := ct.Html()
if err != nil {
log.Printf("cannot generate content of %s", uri)
return
}
it.Summary.Content = htm
case strings.HasSuffix(u.Host, "huxiu.com"):
full, err := it.grabDoc()
if err != nil {
log.Printf("cannot parse content from %s", uri)
return
}
js := full.Find("div.js-video-play-log-report-wrap script").Text()
if js == "" {
return
}
ms := regexp.MustCompile(`'(https://.*video\.huxiucdn\.com/[^']+)'`).FindStringSubmatch(js)
if len(ms) > 0 {
tpl := `<video autoplay controls width="100%%"><source src="%s" type="video/mp4"></video>`
video := fmt.Sprintf(tpl, ms[1])
it.Summary.Content = video + it.Summary.Content
}
}
}
func (it *Item) grabDoc() (doc *goquery.Document, err error) {
timeout, cancel := context.WithTimeout(context.TODO(), time.Second*15)
defer cancel()
req, err := http.NewRequestWithContext(timeout, http.MethodGet, it.Link(), nil)
if err != nil {
return
}
req.Header.Set("referer", it.Link())
req.Header.Set("user-agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:94.0) Gecko/20100101 Firefox/94.0")
rsp, err := http.DefaultClient.Do(req)
if err != nil {
log.Printf("cannot grab link %s", it.Link())
return
}
defer rsp.Body.Close()
dat, err := io.ReadAll(rsp.Body)
if err != nil {
return
}
htm := strings.ReplaceAll(string(dat), "<!--!-->", "")
return goquery.NewDocumentFromReader(strings.NewReader(htm))
}
func (it *Item) ContentHeader() string {
const tpl = `
<p>
<a title="Published: {published}" href="{link}" style="display:block; color: #000; padding-bottom: 10px; text-decoration: none; font-size:1em; font-weight: normal;">
<span style="display: block; color: #666; font-size:1.0em; font-weight: normal;">{origin}</span>
<span style="font-size: 1.5em;">{title}</span>
</a>
</p>`
replacer := strings.NewReplacer(
"{link}", it.Link(),
"{origin}", html.EscapeString(it.Origin.Title),
"{published}", it.PublishedTime().Format("2006-01-02 15:04:05"),
"{title}", html.EscapeString(it.Title),
)
return replacer.Replace(tpl)
}
func (it *Item) ContentFooter() string {
const tpl = `
<br/><br/>
<a style="display: block; display: inline-block; border-top: 1px solid #ccc; padding-top: 5px; color: #666; text-decoration: none;"
href="{link}">{link}</a>
<p style="color:#999;">Save with <a style="color:#666; text-decoration:none; font-weight: bold;"
href="https://github.com/gonejack/inostar">inostar</a>
</p>`
replacer := strings.NewReplacer(
"{link}", it.Link(),
)
return replacer.Replace(tpl)
}
func (it *Item) Link() string {
if len(it.Canonical) > 0 {
return it.Canonical[0].Href
}
return it.Origin.HtmlUrl
}
func (it *Item) PublishedTime() time.Time {
return time.Unix(it.Published, 0)
}
func (it *Item) shouldUnescape(s string) bool {
return regexp.MustCompile(`(&#\d{2,6};){2,}`).MatchString(s)
}