catbase/plugins/meme/webHandlers.go

148 lines
3.6 KiB
Go

package meme
import (
"encoding/json"
"fmt"
"html/template"
"net/http"
"net/url"
"path"
"sort"
"github.com/rs/zerolog/log"
"github.com/velour/catbase/bot"
)
func (p *MemePlugin) registerWeb(c bot.Connector) {
http.HandleFunc("/slash/meme", p.slashMeme(c))
http.HandleFunc("/meme/img/", p.img)
http.HandleFunc("/meme/all", p.all)
http.HandleFunc("/meme/add", p.addMeme)
http.HandleFunc("/meme/rm", p.rmMeme)
http.HandleFunc("/meme", p.webRoot)
p.bot.RegisterWeb("/meme", "Memes")
}
type webResp struct {
Name string `json:"name"`
URL string `json:"url"`
Config string `json:"config"`
}
type webResps []webResp
func (w webResps) Len() int { return len(w) }
func (w webResps) Swap(i, j int) { w[i], w[j] = w[j], w[i] }
type ByName struct{ webResps }
func (s ByName) Less(i, j int) bool { return s.webResps[i].Name < s.webResps[j].Name }
func (p *MemePlugin) all(w http.ResponseWriter, r *http.Request) {
memes := p.c.GetMap("meme.memes", defaultFormats)
configs := p.c.GetMap("meme.memeconfigs", map[string]string{})
values := webResps{}
for n, u := range memes {
config, ok := configs[n]
if !ok {
b, _ := json.Marshal(defaultFormatConfig)
config = string(b)
}
realURL, err := url.Parse(u)
if err != nil || realURL.Scheme == "" {
realURL, err = url.Parse("https://imgflip.com/s/meme/" + u)
if err != nil {
values = append(values, webResp{n, "404.png", config})
log.Error().Err(err).Msgf("invalid URL")
continue
}
}
values = append(values, webResp{n, realURL.String(), config})
}
sort.Sort(ByName{values})
out, err := json.Marshal(values)
if err != nil {
w.WriteHeader(500)
log.Error().Err(err).Msgf("could not serve all memes route")
return
}
w.Write(out)
}
func mkCheckError(w http.ResponseWriter) func(error) bool {
return func(err error) bool {
if err != nil {
log.Error().Err(err).Msgf("meme failed")
w.WriteHeader(500)
e, _ := json.Marshal(err)
w.Write(e)
return true
}
return false
}
}
func (p *MemePlugin) rmMeme(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodDelete {
w.WriteHeader(405)
fmt.Fprintf(w, "Incorrect HTTP method")
return
}
checkError := mkCheckError(w)
decoder := json.NewDecoder(r.Body)
values := webResp{}
err := decoder.Decode(&values)
if checkError(err) {
return
}
formats := p.c.GetMap("meme.memes", defaultFormats)
delete(formats, values.Name)
err = p.c.SetMap("meme.memes", formats)
checkError(err)
}
func (p *MemePlugin) addMeme(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
w.WriteHeader(405)
fmt.Fprintf(w, "Incorrect HTTP method")
return
}
checkError := mkCheckError(w)
decoder := json.NewDecoder(r.Body)
values := webResp{}
err := decoder.Decode(&values)
if checkError(err) {
log.Error().Err(err).Msgf("could not decode body")
return
}
log.Debug().Msgf("POSTed values: %+v", values)
formats := p.c.GetMap("meme.memes", defaultFormats)
formats[values.Name] = values.URL
err = p.c.SetMap("meme.memes", formats)
checkError(err)
configs := p.c.GetMap("meme.memeconfigs", map[string]string{})
configs[values.Name] = values.Config
err = p.c.SetMap("meme.memeconfigs", configs)
checkError(err)
}
func (p *MemePlugin) webRoot(w http.ResponseWriter, r *http.Request) {
var tpl = template.Must(template.New("factoidIndex").Parse(string(memeIndex)))
tpl.Execute(w, struct{ Nav []bot.EndPoint }{p.bot.GetWebNavigation()})
}
func (p *MemePlugin) img(w http.ResponseWriter, r *http.Request) {
_, file := path.Split(r.URL.Path)
id := file
if img, ok := p.images[id]; ok {
w.Write(img.repr)
} else {
w.WriteHeader(404)
w.Write([]byte("not found"))
}
p.images.cleanup()
}