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package wikipedia
import (
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"strconv"
"strings"
"time"
)
var (
defaultLocale string
titlemap = make(map[string]map[string]string)
)
func Init(locale string) error {
defaultLocale = locale
base := fmt.Sprintf("https://%s.wikipedia.org/w/api.php", defaultLocale)
u, err := url.Parse(base)
if err != nil {
return err
}
var resp APIResponse
titles := strings.Join(extractedTitles[:], "|")
q := u.Query()
q.Set("action", "query")
q.Set("format", "json")
q.Set("prop", "langlinks")
q.Set("titles", titles)
q.Set("formatversion", "2")
q.Set("lllimit", "max")
for {
if resp.Continue != nil {
q.Set("continue", resp.Continue.Continue)
q.Set("llcontinue", resp.Continue.LlContinue)
}
u.RawQuery = q.Encode()
respjson, err := http.Get(u.String())
if err != nil {
return err
}
if respjson.StatusCode >= 400 &&
respjson.StatusCode != http.StatusTooManyRequests {
return fmt.Errorf("Failed to GET %s: %s", u, respjson.Status)
}
defer respjson.Body.Close()
secs, err := strconv.Atoi(respjson.Header.Get("Retry-After"))
if err != nil {
time.Sleep(time.Duration(secs) * time.Second)
}
body, err := io.ReadAll(respjson.Body)
if err != nil {
return err
}
resp = APIResponse{}
if err = json.Unmarshal(body, &resp); err != nil {
return err
}
for _, page := range resp.Query.Pages {
if page.LangLinks == nil {
continue
}
t := url.PathEscape(page.Title)
if _, ok := titlemap[t]; !ok {
titlemap[t] = make(map[string]string)
}
for _, ll := range *page.LangLinks {
titlemap[t][ll.Lang] = url.PathEscape(ll.Title)
}
}
if resp.Continue == nil {
return nil
}
}
}
func Url(title, locale string) string {
base := "https://%s.wikipedia.org/wiki/%s"
title = url.PathEscape(title)
t, ok := titlemap[title][locale]
if !ok {
t, locale = title, defaultLocale
}
return fmt.Sprintf(base, locale, t)
}
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