hanayo/modules/doc/documentation.go

135 lines
2.7 KiB
Go
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2019-02-23 13:29:15 +00:00
package doc
import (
"fmt"
"io/ioutil"
"net/http"
"regexp"
"strings"
"time"
)
const referenceLanguage = "en"
var docFiles []Document
// File represents the single documentation file of a determined language.
type File struct {
IsUpdated bool
Title string
referencesFile string
}
// Data retrieves data from file's actual file on disk.
func (f File) Data() (string, error) {
data, err := ioutil.ReadFile(f.referencesFile)
updateIPs()
res := strings.NewReplacer(
"{ipmain}", ipMain,
"{ipmirror}", ipMirror,
).Replace(string(data))
return res, err
}
// Document represents a documentation file, providing its old ID, its slug,
// and all its variations in the various languages.
type Document struct {
Slug string
OldID int
Languages map[string]File
}
// File retrieves a Document's File based on the passed language, and returns
// the values for the referenceLanguage (en) if in the passed language they are
// not available
func (d Document) File(lang string) File {
if vals, ok := d.Languages[lang]; ok {
return vals
}
return d.Languages[referenceLanguage]
}
// LanguageDoc has the only purpose to be returned by GetDocs.
type LanguageDoc struct {
Title string
Slug string
}
// GetDocs retrieves a list of documents in a certain language, with titles and
// slugs.
func GetDocs(lang string) []LanguageDoc {
var docs []LanguageDoc
for _, file := range docFiles {
docs = append(docs, LanguageDoc{
Slug: file.Slug,
Title: file.File(lang).Title,
})
}
return docs
}
// SlugFromOldID gets a doc file's slug from its old ID
func SlugFromOldID(i int) string {
for _, d := range docFiles {
if d.OldID == i {
return d.Slug
}
}
return ""
}
// GetFile retrieves a file, given a slug and a language.
func GetFile(slug, language string) File {
for _, f := range docFiles {
if f.Slug != slug {
continue
}
if val, ok := f.Languages[language]; ok {
return val
}
return f.Languages[referenceLanguage]
}
return File{}
}
var (
ipMain = "163.172.71.251"
ipMirror = "51.15.222.176"
ipLastUpdated = time.Date(2018, 5, 13, 11, 45, 0, 0, time.UTC)
ipRegex = regexp.MustCompile(`^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$`)
)
func updateIPs() {
if time.Now().Sub(ipLastUpdated) < time.Hour*24*14 {
return
}
ipLastUpdated = time.Now()
resp, err := http.Get("https://ip.ripple.moe")
if err != nil {
fmt.Println("error updating IPs", err)
return
}
data, err := ioutil.ReadAll(resp.Body)
resp.Body.Close()
if err != nil {
fmt.Println("error updating IPs", err)
return
}
ips := strings.SplitN(string(data), "\n", 3)
if len(ips) < 2 || !ipRegex.MatchString(ips[0]) || !ipRegex.MatchString(ips[1]) {
return
}
ipMain = ips[0]
ipMirror = ips[1]
}
func init() {
go updateIPs()
}