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package main
import (
"encoding/json"
"io/ioutil"
"strings"
log "github.com/Sirupsen/logrus"
"github.com/gocolly/colly"
)
func (app *App) crawlForCategories(wiki_url string) ([]string, bool) {
return app.queryWMLabs(wiki_url)
}
func (app *App) queryWMLabs(wiki_url string) ([]string, bool) {
defer func() { recover() }()
var categories []string
title, hostname := getWikipediaTitle(wiki_url)
wm_url := ("https://xtools.wmflabs.org/api/page/assessments/" + hostname + "/" + title)
if "" == title || "/" == title {
return []string{}, false
}
response := getResponse(wm_url)
resp_data, err := ioutil.ReadAll(response.Body)
if err != nil {
log.Warnf("queryWMLabs: Reading response data failed for %s", wm_url)
panic(err)
}
var data map[string]interface{}
if err = json.Unmarshal(resp_data, &data); err != nil {
log.Warnf("queryWMLabs: Decoding JSON failed for: %s", wm_url)
panic(err)
}
for k, v := range data {
if "project" != k && "elapsed_time" != k {
wp := v.(map[string]interface{})
for k2, v2 := range wp {
if k2 == "wikiprojects" {
list := v2.(map[string]interface{})
for k3, _ := range list {
cat := normalizeCategory(k3)
if "" != cat {
categories = append(categories, cat)
}
}
}
}
}
}
if len(categories) > 0 {
return categories, true
}
return categories, false
}
func (app *App) crawlWMLabs(wiki_url string) (Category, bool) {
var err error
//path := strings.TrimPrefix(u.EscapedPath(), "/wiki/")
title, hostname := getWikipediaTitle(wiki_url)
wm_url := ("https://xtools.wmflabs.org/articleinfo/" + hostname + "/" + title)
if "" == title || "/" == title {
return Category{}, false
}
var category Category
c := colly.NewCollector()
c.OnHTML(".sort-entry--wikiproject", func(e *colly.HTMLElement) {
category.Name = strings.TrimSpace(e.Text)
category.Url = strings.TrimSpace(e.Attr("href"))
})
err = c.Visit(wm_url)
if err != nil {
log.Fatal(err)
}
if category.Name == "" || category.Url == "" {
log.Warnf("title: %s WM URL: %s \tWiki Url: %s", title, wm_url, wiki_url)
} else {
log.Warnf("crawler: %+v", category)
}
return category, true
}
func (app *App) saveAllCategories() {
rows, err := app.DB.Query("SELECT a.id, url FROM article AS a LEFT JOIN article_category AS j ON a.id = j.article_id WHERE j.id IS NULL;")
if err != nil {
log.Fatal(err)
}
for rows.Next() {
var article_id int
var wiki_url string
err = rows.Scan(&article_id, &wiki_url)
if err != nil {
log.Fatal(err)
}
//category, ok := app.crawlWMLabs(wiki_url)
categories, ok := app.queryWMLabs(wiki_url)
if ok {
app.saveCategory(article_id, categories)
} else {
log.Debug("saveAllCategories: No categories for " + wiki_url)
}
}
}
func normalizeCategory(s string) string {
cat := strings.TrimSpace(s)
cat = strings.TrimSuffix(s, "task force")
cat = strings.TrimSuffix(s, "taskforce")
cat = strings.TrimSuffix(s, "Taskforce")
cat = strings.TrimSuffix(s, "Task Force")
if strings.Contains(strings.ToLower(cat), "articles") {
return ""
}
/**
* The category "Wikipedia" is very useful, but other occurrences are not.
*/
if strings.Contains(strings.ToLower(cat), "wikipedia") && cat != strings.ToLower("wikipedia") {
return ""
}
if strings.Contains(strings.ToLower(cat), "/wikiproject") {
cat = strings.ReplaceAll(cat, "WikiProject ", "")
cat = strings.ReplaceAll(cat, "wikiproject ", "")
cat = strings.ReplaceAll(cat, "Wikiproject ", "")
}
cat = strings.TrimSpace(cat)
return cat
}
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