gosora/routes.go

/*
*
*	Gosora Route Handlers
*	Copyright Azareal 2016 - 2018
*
 */
package main

import (
	"log"
	//"fmt"
	"bytes"
	"html"
	"io"
	"net"
	"net/http"
	"strconv"
	"strings"
	"time"

	"./query_gen/lib"
)

// A blank list to fill out that parameter in Page for routes which don't use it
var tList []interface{}

//var nList []string
var hvars *HeaderVars // We might need to rethink this now that it's a pointer
var successJSONBytes = []byte(`{"success":"1"}`)
var cacheControlMaxAge = "max-age=" + strconv.Itoa(day)

func init() {
	hvars = &HeaderVars{Site: site}
}

type HTTPSRedirect struct {
}

func (red *HTTPSRedirect) ServeHTTP(w http.ResponseWriter, req *http.Request) {
	dest := "https://" + req.Host + req.URL.Path
	if len(req.URL.RawQuery) > 0 {
		dest += "?" + req.URL.RawQuery
	}
	http.Redirect(w, req, dest, http.StatusTemporaryRedirect)
}

// GET functions
func routeStatic(w http.ResponseWriter, r *http.Request) {
	//log.Print("Outputting static file '" + r.URL.Path + "'")
	file, ok := staticFiles[r.URL.Path]
	if !ok {
		w.WriteHeader(http.StatusNotFound)
		return
	}
	h := w.Header()

	// Surely, there's a more efficient way of doing this?
	t, err := time.Parse(http.TimeFormat, h.Get("If-Modified-Since"))
	if err == nil && file.Info.ModTime().Before(t.Add(1*time.Second)) {
		w.WriteHeader(http.StatusNotModified)
		return
	}
	h.Set("Last-Modified", file.FormattedModTime)
	h.Set("Content-Type", file.Mimetype)
	//Cache-Control: max-age=31536000
	h.Set("Cache-Control", cacheControlMaxAge)
	h.Set("Vary", "Accept-Encoding")
	//http.ServeContent(w,r,r.URL.Path,file.Info.ModTime(),file)
	//w.Write(file.Data)
	if strings.Contains(h.Get("Accept-Encoding"), "gzip") {
		h.Set("Content-Encoding", "gzip")
		h.Set("Content-Length", strconv.FormatInt(file.GzipLength, 10))
		io.Copy(w, bytes.NewReader(file.GzipData)) // Use w.Write instead?
	} else {
		h.Set("Content-Length", strconv.FormatInt(file.Length, 10)) // Avoid doing a type conversion every time?
		io.Copy(w, bytes.NewReader(file.Data))
	}
	//io.CopyN(w, bytes.NewReader(file.Data), static_files[r.URL.Path].Length)
}

// Deprecated: Test route for stopping the server during a performance analysis
/*func route_exit(w http.ResponseWriter, r *http.Request){
	db.Close()
	os.Exit(0)
}

// Deprecated: Test route to see which file serving method is faster
func route_fstatic(w http.ResponseWriter, r *http.Request){
	http.ServeFile(w,r,r.URL.Path)
}*/

// TODO: Make this a static file somehow? Is it possible for us to put this file somewhere else?
// TODO: Add a sitemap
// TODO: Add an API so that plugins can register disallowed areas. E.g. /groups/join for plugin_socialgroups
func routeRobotsTxt(w http.ResponseWriter, r *http.Request) {
	_, _ = w.Write([]byte(`User-agent: *
Disallow: /panel/
Disallow: /topics/create/
Disallow: /user/edit/
Disallow: /accounts/
`))
}

func routeOverview(w http.ResponseWriter, r *http.Request, user User) {
	headerVars, ok := UserCheck(w, r, &user)
	if !ok {
		return
	}
	BuildWidgets("overview", nil, headerVars, r)

	pi := Page{"Overview", user, headerVars, tList, nil}
	if preRenderHooks["pre_render_overview"] != nil {
		if runPreRenderHook("pre_render_overview", w, r, &user, &pi) {
			return
		}
	}

	err := templates.ExecuteTemplate(w, "overview.html", pi)
	if err != nil {
		InternalError(err, w)
	}
}

func routeCustomPage(w http.ResponseWriter, r *http.Request, user User) {
	headerVars, ok := UserCheck(w, r, &user)
	if !ok {
		return
	}

	name := r.URL.Path[len("/pages/"):]
	if templates.Lookup("page_"+name) == nil {
		NotFound(w, r)
		return
	}
	BuildWidgets("custom_page", name, headerVars, r)

	pi := Page{"Page", user, headerVars, tList, nil}
	if preRenderHooks["pre_render_custom_page"] != nil {
		if runPreRenderHook("pre_render_custom_page", w, r, &user, &pi) {
			return
		}
	}

	err := templates.ExecuteTemplate(w, "page_"+name, pi)
	if err != nil {
		InternalError(err, w)
	}
}

// TODO: Paginate this
func routeTopics(w http.ResponseWriter, r *http.Request, user User) {
	headerVars, ok := UserCheck(w, r, &user)
	if !ok {
		return
	}
	BuildWidgets("topics", nil, headerVars, r)

	var qlist string
	var fidList []interface{}
	group, err := gstore.Get(user.Group)
	if err != nil {
		LocalError("Something weird happened", w, r, user)
		log.Print("Group #" + strconv.Itoa(user.Group) + " doesn't exist despite being used by User #" + strconv.Itoa(user.ID))
		return
	}

	for _, fid := range group.CanSee {
		if fstore.DirtyGet(fid).Name != "" {
			fidList = append(fidList, strconv.Itoa(fid))
			qlist += "?,"
		}
	}
	qlist = qlist[0 : len(qlist)-1]

	var topicList []*TopicsRow
	//stmt, err := qgen.Builder.SimpleLeftJoin("topics","users","topics.tid, topics.title, topics.content, topics.createdBy, topics.is_closed, topics.sticky, topics.createdAt, topics.lastReplyAt, topics.parentID, topics.postCount, topics.likeCount, users.name, users.avatar","topics.createdBy = users.uid","parentID IN("+qlist+")","topics.sticky DESC, topics.lastReplyAt DESC, topics.createdBy DESC","")
	stmt, err := qgen.Builder.SimpleSelect("topics", "tid, title, content, createdBy, is_closed, sticky, createdAt, lastReplyAt, lastReplyBy, parentID, postCount, likeCount", "parentID IN("+qlist+")", "sticky DESC, lastReplyAt DESC, createdBy DESC", "")
	if err != nil {
		InternalError(err, w)
		return
	}

	rows, err := stmt.Query(fidList...)
	if err != nil {
		InternalError(err, w)
		return
	}
	defer rows.Close()

	var reqUserList = make(map[int]bool)
	for rows.Next() {
		topicItem := TopicsRow{ID: 0}
		err := rows.Scan(&topicItem.ID, &topicItem.Title, &topicItem.Content, &topicItem.CreatedBy, &topicItem.IsClosed, &topicItem.Sticky, &topicItem.CreatedAt, &topicItem.LastReplyAt, &topicItem.LastReplyBy, &topicItem.ParentID, &topicItem.PostCount, &topicItem.LikeCount)
		if err != nil {
			InternalError(err, w)
			return
		}

		topicItem.Link = buildTopicURL(nameToSlug(topicItem.Title), topicItem.ID)

		forum := fstore.DirtyGet(topicItem.ParentID)
		if topicItem.ParentID >= 0 {
			topicItem.ForumName = forum.Name
			topicItem.ForumLink = forum.Link
		} else {
			topicItem.ForumName = ""
			//topicItem.ForumLink = ""
		}

		/*topicItem.CreatedAt, err = relativeTime(topicItem.CreatedAt)
		if err != nil {
			replyItem.CreatedAt = ""
		}*/
		topicItem.LastReplyAt, err = relativeTime(topicItem.LastReplyAt)
		if err != nil {
			InternalError(err, w)
		}

		if vhooks["topics_topic_row_assign"] != nil {
			runVhook("topics_topic_row_assign", &topicItem, &forum)
		}
		topicList = append(topicList, &topicItem)
		reqUserList[topicItem.CreatedBy] = true
		reqUserList[topicItem.LastReplyBy] = true
	}
	err = rows.Err()
	if err != nil {
		InternalError(err, w)
		return
	}

	// Convert the user ID map to a slice, then bulk load the users
	var idSlice = make([]int, len(reqUserList))
	var i int
	for userID := range reqUserList {
		idSlice[i] = userID
		i++
	}

	// TODO: What if a user is deleted via the Control Panel?
	userList, err := users.BulkGetMap(idSlice)
	if err != nil {
		InternalError(err, w)
		return
	}

	// Second pass to the add the user data
	// TODO: Use a pointer to TopicsRow instead of TopicsRow itself?
	for _, topicItem := range topicList {
		topicItem.Creator = userList[topicItem.CreatedBy]
		topicItem.LastUser = userList[topicItem.LastReplyBy]
	}

	pi := TopicsPage{"Topic List", user, headerVars, topicList}
	if preRenderHooks["pre_render_topic_list"] != nil {
		if runPreRenderHook("pre_render_topic_list", w, r, &user, &pi) {
			return
		}
	}
	RunThemeTemplate(headerVars.ThemeName, "topics", pi, w)
}

func routeForum(w http.ResponseWriter, r *http.Request, user User, sfid string) {
	page, _ := strconv.Atoi(r.FormValue("page"))

	// SEO URLs...
	halves := strings.Split(sfid, ".")
	if len(halves) < 2 {
		halves = append(halves, halves[0])
	}
	fid, err := strconv.Atoi(halves[1])
	if err != nil {
		PreError("The provided ForumID is not a valid number.", w, r)
		return
	}

	headerVars, ok := ForumUserCheck(w, r, &user, fid)
	if !ok {
		return
	}
	//log.Printf("groups[user.Group]: %+v\n", groups[user.Group].Forums)
	if !user.Perms.ViewTopic {
		NoPermissions(w, r, user)
		return
	}

	// TODO: Fix this double-check
	forum, err := fstore.Get(fid)
	if err == ErrNoRows {
		NotFound(w, r)
		return
	} else if err != nil {
		InternalError(err, w)
		return
	}

	BuildWidgets("view_forum", forum, headerVars, r)

	// Calculate the offset
	var offset int
	lastPage := (forum.TopicCount / config.ItemsPerPage) + 1
	if page > 1 {
		offset = (config.ItemsPerPage * page) - config.ItemsPerPage
	} else if page == -1 {
		page = lastPage
		offset = (config.ItemsPerPage * page) - config.ItemsPerPage
	} else {
		page = 1
	}
	rows, err := get_forum_topics_offset_stmt.Query(fid, offset, config.ItemsPerPage)
	if err != nil {
		InternalError(err, w)
		return
	}
	defer rows.Close()

	// TODO: Use something other than TopicsRow as we don't need to store the forum name and link on each and every topic item?
	var topicList []*TopicsRow
	var reqUserList = make(map[int]bool)
	for rows.Next() {
		var topicItem = TopicsRow{ID: 0}
		err := rows.Scan(&topicItem.ID, &topicItem.Title, &topicItem.Content, &topicItem.CreatedBy, &topicItem.IsClosed, &topicItem.Sticky, &topicItem.CreatedAt, &topicItem.LastReplyAt, &topicItem.LastReplyBy, &topicItem.ParentID, &topicItem.PostCount, &topicItem.LikeCount)
		if err != nil {
			InternalError(err, w)
			return
		}

		topicItem.Link = buildTopicURL(nameToSlug(topicItem.Title), topicItem.ID)
		topicItem.LastReplyAt, err = relativeTime(topicItem.LastReplyAt)
		if err != nil {
			InternalError(err, w)
		}

		if vhooks["forum_trow_assign"] != nil {
			runVhook("forum_trow_assign", &topicItem, &forum)
		}
		topicList = append(topicList, &topicItem)
		reqUserList[topicItem.CreatedBy] = true
		reqUserList[topicItem.LastReplyBy] = true
	}
	err = rows.Err()
	if err != nil {
		InternalError(err, w)
		return
	}

	// Convert the user ID map to a slice, then bulk load the users
	var idSlice = make([]int, len(reqUserList))
	var i int
	for userID := range reqUserList {
		idSlice[i] = userID
		i++
	}

	// TODO: What if a user is deleted via the Control Panel?
	userList, err := users.BulkGetMap(idSlice)
	if err != nil {
		InternalError(err, w)
		return
	}

	// Second pass to the add the user data
	// TODO: Use a pointer to TopicsRow instead of TopicsRow itself?
	for _, topicItem := range topicList {
		topicItem.Creator = userList[topicItem.CreatedBy]
		topicItem.LastUser = userList[topicItem.LastReplyBy]
	}

	pi := ForumPage{forum.Name, user, headerVars, topicList, *forum, page, lastPage}
	if preRenderHooks["pre_render_view_forum"] != nil {
		if runPreRenderHook("pre_render_view_forum", w, r, &user, &pi) {
			return
		}
	}
	RunThemeTemplate(headerVars.ThemeName, "forum", pi, w)
}

func routeForums(w http.ResponseWriter, r *http.Request, user User) {
	headerVars, ok := UserCheck(w, r, &user)
	if !ok {
		return
	}
	BuildWidgets("forums", nil, headerVars, r)

	var err error
	var forumList []Forum
	var canSee []int
	if user.IsSuperAdmin {
		canSee, err = fstore.GetAllVisibleIDs()
		if err != nil {
			InternalError(err, w)
			return
		}
		//log.Print("canSee",canSee)
	} else {
		group, err := gstore.Get(user.Group)
		if err != nil {
			LocalError("Something weird happened", w, r, user)
			log.Print("Group #" + strconv.Itoa(user.Group) + " doesn't exist despite being used by User #" + strconv.Itoa(user.ID))
			return
		}
		canSee = group.CanSee
		//log.Print("group.CanSee",group.CanSee)
	}

	for _, fid := range canSee {
		//log.Print(forums[fid])
		var forum = *fstore.DirtyGet(fid)
		if forum.ParentID == 0 {
			if forum.LastTopicID != 0 {
				forum.LastTopicTime, err = relativeTime(forum.LastTopicTime)
				if err != nil {
					InternalError(err, w)
				}
			} else {
				forum.LastTopic = "None"
				forum.LastTopicTime = ""
			}
			if hooks["forums_frow_assign"] != nil {
				runHook("forums_frow_assign", &forum)
			}
			forumList = append(forumList, forum)
		}
	}

	pi := ForumsPage{"Forum List", user, headerVars, forumList}
	if preRenderHooks["pre_render_forum_list"] != nil {
		if runPreRenderHook("pre_render_forum_list", w, r, &user, &pi) {
			return
		}
	}
	RunThemeTemplate(headerVars.ThemeName, "forums", pi, w)
}

func routeTopicID(w http.ResponseWriter, r *http.Request, user User) {
	var err error
	var page, offset int
	var replyList []Reply

	page, _ = strconv.Atoi(r.FormValue("page"))

	// SEO URLs...
	halves := strings.Split(r.URL.Path[len("/topic/"):], ".")
	if len(halves) < 2 {
		halves = append(halves, halves[0])
	}

	tid, err := strconv.Atoi(halves[1])
	if err != nil {
		PreError("The provided TopicID is not a valid number.", w, r)
		return
	}

	// Get the topic...
	topic, err := getTopicuser(tid)
	if err == ErrNoRows {
		NotFound(w, r)
		return
	} else if err != nil {
		InternalError(err, w)
		return
	}
	topic.ClassName = ""

	headerVars, ok := ForumUserCheck(w, r, &user, topic.ParentID)
	if !ok {
		return
	}
	if !user.Perms.ViewTopic {
		//log.Printf("user.Perms: %+v\n", user.Perms)
		NoPermissions(w, r, user)
		return
	}

	BuildWidgets("view_topic", &topic, headerVars, r)

	topic.Content = parseMessage(topic.Content)
	topic.ContentLines = strings.Count(topic.Content, "\n")

	// We don't want users posting in locked topics...
	if topic.IsClosed && !user.IsMod {
		user.Perms.CreateReply = false
	}

	postGroup, err := gstore.Get(topic.Group)
	if err != nil {
		InternalError(err, w)
		return
	}

	topic.Tag = postGroup.Tag
	if postGroup.IsMod || postGroup.IsAdmin {
		topic.ClassName = config.StaffCss
	}

	/*if headerVars.Settings["url_tags"] == false {
		topic.URLName = ""
	} else {
		topic.URL, ok = external_sites[topic.URLPrefix]
		if !ok {
			topic.URL = topic.URLName
		} else {
			topic.URL = topic.URL + topic.URLName
		}
	}*/

	topic.CreatedAt, err = relativeTime(topic.CreatedAt)
	if err != nil {
		topic.CreatedAt = ""
	}

	// Calculate the offset
	lastPage := (topic.PostCount / config.ItemsPerPage) + 1
	if page > 1 {
		offset = (config.ItemsPerPage * page) - config.ItemsPerPage
	} else if page == -1 {
		page = lastPage
		offset = (config.ItemsPerPage * page) - config.ItemsPerPage
	} else {
		page = 1
	}

	// Get the replies..
	rows, err := get_topic_replies_offset_stmt.Query(topic.ID, offset, config.ItemsPerPage)
	if err == ErrNoRows {
		LocalError("Bad Page. Some of the posts may have been deleted or you got here by directly typing in the page number.", w, r, user)
		return
	} else if err != nil {
		InternalError(err, w)
		return
	}
	defer rows.Close()

	replyItem := Reply{ClassName: ""}
	for rows.Next() {
		err := rows.Scan(&replyItem.ID, &replyItem.Content, &replyItem.CreatedBy, &replyItem.CreatedAt, &replyItem.LastEdit, &replyItem.LastEditBy, &replyItem.Avatar, &replyItem.CreatedByName, &replyItem.Group, &replyItem.URLPrefix, &replyItem.URLName, &replyItem.Level, &replyItem.IPAddress, &replyItem.LikeCount, &replyItem.ActionType)
		if err != nil {
			InternalError(err, w)
			return
		}

		replyItem.UserLink = buildProfileURL(nameToSlug(replyItem.CreatedByName), replyItem.CreatedBy)
		replyItem.ParentID = topic.ID
		replyItem.ContentHtml = parseMessage(replyItem.Content)
		replyItem.ContentLines = strings.Count(replyItem.Content, "\n")

		postGroup, err = gstore.Get(replyItem.Group)
		if err != nil {
			InternalError(err, w)
			return
		}

		if postGroup.IsMod || postGroup.IsAdmin {
			replyItem.ClassName = config.StaffCss
		} else {
			replyItem.ClassName = ""
		}

		if replyItem.Avatar != "" {
			if replyItem.Avatar[0] == '.' {
				replyItem.Avatar = "/uploads/avatar_" + strconv.Itoa(replyItem.CreatedBy) + replyItem.Avatar
			}
		} else {
			replyItem.Avatar = strings.Replace(config.Noavatar, "{id}", strconv.Itoa(replyItem.CreatedBy), 1)
		}

		replyItem.Tag = postGroup.Tag

		/*if headerVars.Settings["url_tags"] == false {
			replyItem.URLName = ""
		} else {
			replyItem.URL, ok = external_sites[replyItem.URLPrefix]
			if !ok {
				replyItem.URL = replyItem.URLName
			} else {
				replyItem.URL = replyItem.URL + replyItem.URLName
			}
		}*/

		replyItem.CreatedAt, err = relativeTime(replyItem.CreatedAt)
		if err != nil {
			replyItem.CreatedAt = ""
		}

		// We really shouldn't have inline HTML, we should do something about this...
		if replyItem.ActionType != "" {
			switch replyItem.ActionType {
			case "lock":
				replyItem.ActionType = "This topic has been locked by <a href='" + replyItem.UserLink + "'>" + replyItem.CreatedByName + "</a>"
				replyItem.ActionIcon = "&#x1F512;&#xFE0E"
			case "unlock":
				replyItem.ActionType = "This topic has been reopened by <a href='" + replyItem.UserLink + "'>" + replyItem.CreatedByName + "</a>"
				replyItem.ActionIcon = "&#x1F513;&#xFE0E"
			case "stick":
				replyItem.ActionType = "This topic has been pinned by <a href='" + replyItem.UserLink + "'>" + replyItem.CreatedByName + "</a>"
				replyItem.ActionIcon = "&#x1F4CC;&#xFE0E"
			case "unstick":
				replyItem.ActionType = "This topic has been unpinned by <a href='" + replyItem.UserLink + "'>" + replyItem.CreatedByName + "</a>"
				replyItem.ActionIcon = "&#x1F4CC;&#xFE0E"
			default:
				replyItem.ActionType = replyItem.ActionType + " has happened"
				replyItem.ActionIcon = ""
			}
		}
		replyItem.Liked = false

		// TODO: Rename this to topic_rrow_assign
		if hooks["rrow_assign"] != nil {
			runHook("rrow_assign", &replyItem)
		}
		replyList = append(replyList, replyItem)
	}
	err = rows.Err()
	if err != nil {
		InternalError(err, w)
		return
	}

	tpage := TopicPage{topic.Title, user, headerVars, replyList, topic, page, lastPage}
	if preRenderHooks["pre_render_view_topic"] != nil {
		if runPreRenderHook("pre_render_view_topic", w, r, &user, &tpage) {
			return
		}
	}
	RunThemeTemplate(headerVars.ThemeName, "topic", tpage, w)
}

func routeProfile(w http.ResponseWriter, r *http.Request, user User) {
	headerVars, ok := UserCheck(w, r, &user)
	if !ok {
		return
	}

	var err error
	var replyContent, replyCreatedByName, replyCreatedAt, replyAvatar, replyTag, replyClassName string
	var rid, replyCreatedBy, replyLastEdit, replyLastEditBy, replyLines, replyGroup int
	var replyList []Reply

	// SEO URLs...
	halves := strings.Split(r.URL.Path[len("/user/"):], ".")
	if len(halves) < 2 {
		halves = append(halves, halves[0])
	}

	pid, err := strconv.Atoi(halves[1])
	if err != nil {
		LocalError("The provided User ID is not a valid number.", w, r, user)
		return
	}

	var puser *User
	if pid == user.ID {
		user.IsMod = true
		puser = &user
	} else {
		// Fetch the user data
		puser, err = users.Get(pid)
		if err == ErrNoRows {
			NotFound(w, r)
			return
		} else if err != nil {
			InternalError(err, w)
			return
		}
	}

	// Get the replies..
	rows, err := get_profile_replies_stmt.Query(puser.ID)
	if err != nil {
		InternalError(err, w)
		return
	}
	defer rows.Close()

	for rows.Next() {
		err := rows.Scan(&rid, &replyContent, &replyCreatedBy, &replyCreatedAt, &replyLastEdit, &replyLastEditBy, &replyAvatar, &replyCreatedByName, &replyGroup)
		if err != nil {
			InternalError(err, w)
			return
		}

		group, err := gstore.Get(replyGroup)
		if err != nil {
			InternalError(err, w)
			return
		}

		replyLines = strings.Count(replyContent, "\n")
		if group.IsMod || group.IsAdmin {
			replyClassName = config.StaffCss
		} else {
			replyClassName = ""
		}
		if replyAvatar != "" {
			if replyAvatar[0] == '.' {
				replyAvatar = "/uploads/avatar_" + strconv.Itoa(replyCreatedBy) + replyAvatar
			}
		} else {
			replyAvatar = strings.Replace(config.Noavatar, "{id}", strconv.Itoa(replyCreatedBy), 1)
		}

		if group.Tag != "" {
			replyTag = group.Tag
		} else if puser.ID == replyCreatedBy {
			replyTag = "Profile Owner"
		} else {
			replyTag = ""
		}

		replyLiked := false
		replyLikeCount := 0

		// TODO: Add a hook here

		replyList = append(replyList, Reply{rid, puser.ID, replyContent, parseMessage(replyContent), replyCreatedBy, buildProfileURL(nameToSlug(replyCreatedByName), replyCreatedBy), replyCreatedByName, replyGroup, replyCreatedAt, replyLastEdit, replyLastEditBy, replyAvatar, replyClassName, replyLines, replyTag, "", "", "", 0, "", replyLiked, replyLikeCount, "", ""})
	}
	err = rows.Err()
	if err != nil {
		InternalError(err, w)
		return
	}

	ppage := ProfilePage{puser.Name + "'s Profile", user, headerVars, replyList, *puser}
	if preRenderHooks["pre_render_profile"] != nil {
		if runPreRenderHook("pre_render_profile", w, r, &user, &ppage) {
			return
		}
	}

	template_profile_handle(ppage, w)
}

func routeLogin(w http.ResponseWriter, r *http.Request, user User) {
	headerVars, ok := UserCheck(w, r, &user)
	if !ok {
		return
	}
	if user.Loggedin {
		LocalError("You're already logged in.", w, r, user)
		return
	}
	pi := Page{"Login", user, headerVars, tList, nil}
	if preRenderHooks["pre_render_login"] != nil {
		if runPreRenderHook("pre_render_login", w, r, &user, &pi) {
			return
		}
	}
	templates.ExecuteTemplate(w, "login.html", pi)
}

// TODO: Log failed attempted logins?
// TODO: Lock IPS out if they have too many failed attempts?
// TODO: Log unusual countries in comparison to the country a user usually logs in from? Alert the user about this?
func routeLoginSubmit(w http.ResponseWriter, r *http.Request, user User) {
	if user.Loggedin {
		LocalError("You're already logged in.", w, r, user)
		return
	}
	err := r.ParseForm()
	if err != nil {
		LocalError("Bad Form", w, r, user)
		return
	}

	uid, err := auth.Authenticate(html.EscapeString(r.PostFormValue("username")), r.PostFormValue("password"))
	if err != nil {
		LocalError(err.Error(), w, r, user)
		return
	}

	userPtr, err := users.Get(uid)
	if err != nil {
		LocalError("Bad account", w, r, user)
		return
	}
	user = *userPtr

	var session string
	if user.Session == "" {
		session, err = auth.CreateSession(uid)
		if err != nil {
			InternalError(err, w)
			return
		}
	} else {
		session = user.Session
	}

	auth.SetCookies(w, uid, session)
	if user.IsAdmin {
		// Is this error check reundant? We already check for the error in PreRoute for the same IP
		host, _, err := net.SplitHostPort(r.RemoteAddr)
		if err != nil {
			InternalError(err, w)
			return
		}
		log.Print("#" + strconv.Itoa(uid) + " has logged in with IP " + host)
	}
	http.Redirect(w, r, "/", http.StatusSeeOther)
}

func routeRegister(w http.ResponseWriter, r *http.Request, user User) {
	headerVars, ok := UserCheck(w, r, &user)
	if !ok {
		return
	}
	if user.Loggedin {
		LocalError("You're already logged in.", w, r, user)
		return
	}
	pi := Page{"Registration", user, headerVars, tList, nil}
	if preRenderHooks["pre_render_register"] != nil {
		if runPreRenderHook("pre_render_register", w, r, &user, &pi) {
			return
		}
	}
	templates.ExecuteTemplate(w, "register.html", pi)
}

func routeRegisterSubmit(w http.ResponseWriter, r *http.Request, user User) {
	headerLite, _ := SimpleUserCheck(w, r, &user)

	err := r.ParseForm()
	if err != nil {
		LocalError("Bad Form", w, r, user)
		return
	}

	username := html.EscapeString(r.PostFormValue("username"))
	if username == "" {
		LocalError("You didn't put in a username.", w, r, user)
		return
	}
	email := html.EscapeString(r.PostFormValue("email"))
	if email == "" {
		LocalError("You didn't put in an email.", w, r, user)
		return
	}

	password := r.PostFormValue("password")
	if password == "" {
		LocalError("You didn't put in a password.", w, r, user)
		return
	}

	if password == username {
		LocalError("You can't use your username as your password.", w, r, user)
		return
	}

	if password == email {
		LocalError("You can't use your email as your password.", w, r, user)
		return
	}

	err = weakPassword(password)
	if err != nil {
		LocalError(err.Error(), w, r, user)
		return
	}

	confirmPassword := r.PostFormValue("confirm_password")
	log.Print("Registration Attempt! Username: " + username) // TODO: Add controls over what is logged when?

	// Do the two inputted passwords match..?
	if password != confirmPassword {
		LocalError("The two passwords don't match.", w, r, user)
		return
	}

	var active, group int
	switch headerLite.Settings["activation_type"] {
	case 1: // Activate All
		active = 1
		group = config.DefaultGroup
	default: // Anything else. E.g. Admin Activation or Email Activation.
		group = config.ActivationGroup
	}

	uid, err := users.Create(username, password, email, group, active)
	if err == errAccountExists {
		LocalError("This username isn't available. Try another.", w, r, user)
		return
	} else if err != nil {
		InternalError(err, w)
		return
	}

	// Check if this user actually owns this email, if email activation is on, automatically flip their account to active when the email is validated. Validation is also useful for determining whether this user should receive any alerts, etc. via email
	if site.EnableEmails {
		token, err := GenerateSafeString(80)
		if err != nil {
			InternalError(err, w)
			return
		}
		_, err = add_email_stmt.Exec(email, uid, 0, token)
		if err != nil {
			InternalError(err, w)
			return
		}

		if !SendValidationEmail(username, email, token) {
			LocalError("We were unable to send the email for you to confirm that this email address belongs to you. You may not have access to some functionality until you do so. Please ask an administrator for assistance.", w, r, user)
			return
		}
	}

	session, err := auth.CreateSession(uid)
	if err != nil {
		InternalError(err, w)
		return
	}

	auth.SetCookies(w, uid, session)
	http.Redirect(w, r, "/", http.StatusSeeOther)
}

// TODO: Set the cookie domain
func routeChangeTheme(w http.ResponseWriter, r *http.Request, user User) {
	//headerLite, _ := SimpleUserCheck(w, r, &user)
	err := r.ParseForm()
	if err != nil {
		PreError("Bad Form", w, r)
		return
	}

	// TODO: Rename isJs to something else, just in case we rewrite the JS side in WebAssembly?
	isJs := (r.PostFormValue("isJs") == "1")

	newTheme := html.EscapeString(r.PostFormValue("newTheme"))

	theme, ok := themes[newTheme]
	if !ok || theme.HideFromThemes {
		log.Print("Bad Theme: ", newTheme)
		LocalErrorJSQ("That theme doesn't exist", w, r, user, isJs)
		return
	}

	// TODO: Store the current theme in the user's account?
	/*if user.Loggedin {
		_, err = change_theme_stmt.Exec(newTheme, user.ID)
		if err != nil {
			InternalError(err, w)
			return
		}
	}*/

	cookie := http.Cookie{Name: "current_theme", Value: newTheme, Path: "/", MaxAge: year}
	http.SetCookie(w, &cookie)

	if !isJs {
		http.Redirect(w, r, "/", http.StatusSeeOther)
	} else {
		_, _ = w.Write(successJSONBytes)
	}
}

// TODO: We don't need support XML here to support sitemaps, we could handle those elsewhere
var phraseLoginAlerts = []byte(`{"msgs":[{"msg":"Login to see your alerts","path":"/accounts/login"}]}`)

func routeAPI(w http.ResponseWriter, r *http.Request, user User) {
	w.Header().Set("Content-Type", "application/json")
	err := r.ParseForm()
	if err != nil {
		PreErrorJS("Bad Form", w, r)
		return
	}

	action := r.FormValue("action")
	if action != "get" && action != "set" {
		PreErrorJS("Invalid Action", w, r)
		return
	}

	module := r.FormValue("module")
	switch module {
	case "dismiss-alert":
		asid, err := strconv.Atoi(r.FormValue("asid"))
		if err != nil {
			PreErrorJS("Invalid asid", w, r)
			return
		}

		_, err = delete_activity_stream_match_stmt.Exec(user.ID, asid)
		if err != nil {
			InternalError(err, w)
			return
		}
	case "alerts": // A feed of events tailored for a specific user
		if !user.Loggedin {
			w.Write(phraseLoginAlerts)
			return
		}

		var msglist, event, elementType string
		var asid, actorID, targetUserID, elementID int
		var msgCount int

		err = get_activity_count_by_watcher_stmt.QueryRow(user.ID).Scan(&msgCount)
		if err == ErrNoRows {
			PreErrorJS("Couldn't find the parent topic", w, r)
			return
		} else if err != nil {
			InternalErrorJS(err, w, r)
			return
		}

		rows, err := get_activity_feed_by_watcher_stmt.Query(user.ID)
		if err != nil {
			InternalErrorJS(err, w, r)
			return
		}
		defer rows.Close()

		for rows.Next() {
			err = rows.Scan(&asid, &actorID, &targetUserID, &event, &elementType, &elementID)
			if err != nil {
				InternalErrorJS(err, w, r)
				return
			}
			res, err := buildAlert(asid, event, elementType, actorID, targetUserID, elementID, user)
			if err != nil {
				LocalErrorJS(err.Error(), w, r)
				return
			}
			msglist += res + ","
		}

		err = rows.Err()
		if err != nil {
			InternalErrorJS(err, w, r)
			return
		}

		if len(msglist) != 0 {
			msglist = msglist[0 : len(msglist)-1]
		}
		_, _ = w.Write([]byte(`{"msgs":[` + msglist + `],"msgCount":` + strconv.Itoa(msgCount) + `}`))
		//log.Print(`{"msgs":[` + msglist + `],"msgCount":` + strconv.Itoa(msgCount) + `}`)
	//case "topics":
	//case "forums":
	//case "users":
	//case "pages":
	// This might not be possible. We might need .xml paths for sitemaps
	/*case "sitemap":
	if format != "xml" {
		PreError("You can only fetch sitemaps in the XML format!",w,r)
		return
	}*/
	default:
		PreErrorJS("Invalid Module", w, r)
	}
}