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package api
import (
"encoding/json"
"fmt"
"log"
"net/http"
"strings"
"git.hatecomputers.club/hatecomputers/hatecomputers.club/database"
"git.hatecomputers.club/hatecomputers/hatecomputers.club/utils"
)
type HcaptchaArgs struct {
SiteKey string
}
func validateGuestbookEntry(entry *database.GuestbookEntry) []string {
errors := []string{}
if entry.Name == "" {
errors = append(errors, "name is required")
}
if entry.Message == "" {
errors = append(errors, "message is required")
}
messageLength := len(entry.Message)
if messageLength > 500 {
errors = append(errors, "message cannot be longer than 500 characters")
}
newLines := strings.Count(entry.Message, "\n")
if newLines > 10 {
errors = append(errors, "message cannot contain more than 10 new lines")
}
return errors
}
func SignGuestbookContinuation(context *RequestContext, req *http.Request, resp http.ResponseWriter) ContinuationChain {
return func(success Continuation, failure Continuation) ContinuationChain {
name := req.FormValue("name")
message := req.FormValue("message")
hCaptchaResponse := req.FormValue("h-captcha-response")
formErrors := FormError{
Errors: []string{},
}
if hCaptchaResponse == "" {
formErrors.Errors = append(formErrors.Errors, "hCaptcha is required")
}
entry := &database.GuestbookEntry{
ID: utils.RandomId(),
Name: name,
Message: message,
}
formErrors.Errors = append(formErrors.Errors, validateGuestbookEntry(entry)...)
err := verifyHCaptcha(context.Args.HcaptchaSecret, hCaptchaResponse)
if err != nil {
log.Println(err)
formErrors.Errors = append(formErrors.Errors, "hCaptcha verification failed")
}
if len(formErrors.Errors) > 0 {
(*context.TemplateData)["FormError"] = formErrors
(*context.TemplateData)["EntryForm"] = entry
return failure(context, req, resp)
}
_, err = database.SaveGuestbookEntry(context.DBConn, entry)
if err != nil {
log.Println(err)
resp.WriteHeader(http.StatusInternalServerError)
return failure(context, req, resp)
}
return success(context, req, resp)
}
}
func ListGuestbookContinuation(context *RequestContext, req *http.Request, resp http.ResponseWriter) ContinuationChain {
return func(success Continuation, failure Continuation) ContinuationChain {
entries, err := database.GetGuestbookEntries(context.DBConn)
if err != nil {
log.Println(err)
resp.WriteHeader(http.StatusInternalServerError)
return failure(context, req, resp)
}
(*context.TemplateData)["GuestbookEntries"] = entries
return success(context, req, resp)
}
}
func HcaptchaArgsContinuation(context *RequestContext, req *http.Request, resp http.ResponseWriter) ContinuationChain {
return func(success Continuation, failure Continuation) ContinuationChain {
(*context.TemplateData)["HcaptchaArgs"] = HcaptchaArgs{
SiteKey: context.Args.HcaptchaSiteKey,
}
log.Println(context.Args.HcaptchaSiteKey)
return success(context, req, resp)
}
}
func verifyHCaptcha(secret, response string) error {
verifyURL := "https://hcaptcha.com/siteverify"
body := strings.NewReader("secret=" + secret + "&response=" + response)
req, err := http.NewRequest("POST", verifyURL, body)
if err != nil {
return err
}
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
return err
}
jsonResponse := struct {
Success bool `json:"success"`
}{}
err = json.NewDecoder(resp.Body).Decode(&jsonResponse)
if err != nil {
return err
}
if !jsonResponse.Success {
return fmt.Errorf("hcaptcha verification failed")
}
defer resp.Body.Close()
return nil
}
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