website/pkg/controller/index/contact.go

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package index
import (
"fmt"
"html/template"
"net/http"
"strconv"
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"code.nonshy.com/nonshy/website/pkg/config"
"code.nonshy.com/nonshy/website/pkg/log"
"code.nonshy.com/nonshy/website/pkg/mail"
"code.nonshy.com/nonshy/website/pkg/markdown"
"code.nonshy.com/nonshy/website/pkg/models"
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"code.nonshy.com/nonshy/website/pkg/ratelimit"
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"code.nonshy.com/nonshy/website/pkg/session"
"code.nonshy.com/nonshy/website/pkg/templates"
)
// Contact or report a problem.
func Contact() http.HandlerFunc {
tmpl := templates.Must("contact.html")
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// Query and form POST parameters.
var (
intent = r.FormValue("intent")
subject = r.FormValue("subject")
title = "Contact Us"
message = r.FormValue("message")
footer string // appends to the message only when posting the feedback
replyTo = r.FormValue("email")
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trap1 = r.FormValue("url") != "https://"
trap2 = r.FormValue("comment") != ""
tableID int
tableName string
tableLabel string // front-end user feedback about selected report item
messageRequired = true // unless we have a table ID to work with
success = "Thank you for your feedback! Your message has been delivered to the website administrators."
)
// For report intents: ID of the user, photo, message, etc.
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tableID, err := strconv.Atoi(r.FormValue("id"))
if err != nil {
// The tableID is not an int - was it a username?
if user, err := models.FindUser(r.FormValue("id")); err == nil {
tableID = int(user.ID)
}
}
if tableID > 0 {
messageRequired = false
}
// In what context is the ID given?
if subject != "" && tableID > 0 {
switch subject {
case "report.user":
tableName = "users"
if user, err := models.GetUser(uint64(tableID)); err == nil {
tableLabel = fmt.Sprintf(`User account "%s"`, user.Username)
} else {
log.Error("/contact: couldn't produce table label for user %d: %s", tableID, err)
}
case "report.photo":
tableName = "photos"
// Find this photo and the user associated.
if pic, err := models.GetPhoto(uint64(tableID)); err == nil {
if user, err := models.GetUser(pic.UserID); err == nil {
tableLabel = fmt.Sprintf(`A profile photo of user account "%s"`, user.Username)
} else {
log.Error("/contact: couldn't produce table label for user %d: %s", tableID, err)
}
} else {
log.Error("/contact: couldn't produce table label for photo %d: %s", tableID, err)
}
case "report.message":
tableName = "messages"
tableLabel = "Direct Message conversation"
// Find this message, and attach it to the report.
if msg, err := models.GetMessage(uint64(tableID)); err == nil {
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var username = "[unavailable]"
if sender, err := models.GetUser(msg.SourceUserID); err == nil {
username = sender.Username
}
footer = fmt.Sprintf(`
---
From: <a href="/u/%s">@%s</a>
%s`,
username, username,
markdown.Quotify(msg.Message),
)
}
case "report.comment":
tableName = "comments"
// Find this comment.
if comment, err := models.GetComment(uint64(tableID)); err == nil {
tableLabel = fmt.Sprintf(`A comment written by "%s"`, comment.User.Username)
} else {
log.Error("/contact: couldn't produce table label for comment %d: %s", tableID, err)
}
case "report.forum", "forum.adopt":
tableName = "forums"
// Find this forum.
if forum, err := models.GetForum(uint64(tableID)); err == nil {
tableLabel = fmt.Sprintf(`The forum "%s" (/f/%s)`, forum.Title, forum.Fragment)
} else {
log.Error("/contact: couldn't produce table label for comment %d: %s", tableID, err)
}
}
}
// On POST: take what we have now and email the admins.
if r.Method == http.MethodPost {
// Look up the current user, in case logged in.
currentUser, err := session.CurrentUser(r)
if err == nil {
replyTo = currentUser.Email
}
// We were getting too much spam logged-out: prevent logged-out bots from still posting.
if currentUser == nil {
log.Error("Blocked POST /contact because user is logged-out")
session.FlashError(w, r, "Our contact form is only for logged-in users, sorry!")
templates.Redirect(w, "/contact")
return
}
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// Rate limit submissions, especially for logged-out users.
if currentUser == nil {
limiter := &ratelimit.Limiter{
Namespace: "contact",
ID: session.RemoteAddr(r),
Limit: config.ContactRateLimit,
Window: config.ContactRateLimitWindow,
CooldownAt: config.ContactRateLimitCooldownAt,
Cooldown: config.ContactRateLimitCooldown,
}
if err := limiter.Ping(); err != nil {
session.FlashError(w, r, err.Error())
templates.Redirect(w, r.URL.Path)
return
}
}
// If they have tripped the spam bot trap fields, don't save their message.
if trap1 || trap2 {
log.Error("Contact form: bot has tripped the trap fields, do not save message")
session.Flash(w, r, success)
templates.Redirect(w, r.URL.Path)
return
}
// Store feedback in the database.
fb := &models.Feedback{
Intent: intent,
Subject: subject,
Message: message + footer,
TableName: tableName,
TableID: uint64(tableID),
}
if currentUser != nil && currentUser.ID > 0 {
fb.UserID = currentUser.ID
} else if replyTo != "" {
fb.ReplyTo = replyTo
}
if err := models.CreateFeedback(fb); err != nil {
session.FlashError(w, r, "Couldn't save feedback: %s", err)
templates.Redirect(w, r.URL.Path)
return
}
// Email the admins.
if err := mail.Send(mail.Message{
To: config.Current.AdminEmail,
Subject: "User Feedback: " + title,
Template: "email/contact_admin.html",
Data: map[string]interface{}{
"Title": title,
"Intent": intent,
"Subject": subject,
"Message": template.HTML(markdown.Render(message)),
"TableName": tableName,
"TableID": tableID,
"CurrentUser": currentUser,
"ReplyTo": replyTo,
"BaseURL": config.Current.BaseURL,
"AdminURL": config.Current.BaseURL + "/admin/feedback",
},
}); err != nil {
log.Error("/contact page: couldn't send email: %s", err)
}
session.Flash(w, r, success)
templates.Redirect(w, r.URL.Path)
return
}
// Default intent = contact
if intent == "report" {
title = "Report a Problem"
} else {
intent = "contact"
}
// Validate the subject.
if subject != "" {
var found bool
for _, group := range config.ContactUsChoices {
for _, opt := range group.Options {
if opt.Value == subject {
found = true
break
}
}
}
if !found {
subject = ""
}
}
var vars = map[string]interface{}{
"Intent": intent,
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"TableID": r.FormValue("id"),
"TableLabel": tableLabel,
"Subject": subject,
"PageTitle": title,
"Subjects": config.ContactUsChoices,
"Message": message,
"MessageRequired": messageRequired,
}
if err := tmpl.Execute(w, r, vars); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
})
}