package appimport (	"fmt"	"log"	"net/http"	"strconv"	"strings"	"github.com/nxrmqlly/district/app/httpx"	"github.com/nxrmqlly/district/store")type SubmitPageData struct {	Title string	Body  string	Error string}func (ro *Router) handleSubmitView(w http.ResponseWriter, r *http.Request) {	ro.RenderPage(w, r, "submit", "new post", SubmitPageData{})}func (ro *Router) handleSubmitCreate(w http.ResponseWriter, r *http.Request) {	sess, _ := SessionFromContext(r.Context())	if err := r.ParseForm(); err != nil {		httpx.ErrorJSON(w, http.StatusBadRequest, "invalid form")		return	}	title := strings.TrimSpace(r.FormValue("title"))	body := strings.TrimSpace(r.FormValue("body"))	if title == "" || body == "" {		ro.RenderPage(w, r, "submit", "new post", SubmitPageData{			Title: title,			Body:  body,			Error: "title and body are required",		})		return	}	post, err := ro.queries.NewPost(r.Context(), store.NewPostParams{		AuthorID: sess.UserID,		Title:    title,		Body:     body,		EmbedUrl: "",	})	if err != nil {		httpx.ErrorJSON(w, http.StatusInternalServerError, "could not create post")		return	}	http.Redirect(w, r, fmt.Sprintf("/p/%d", post.ID), http.StatusSeeOther)}type PostPageData struct {	store.GetPostRow	Comments []*CommentTree}func (ro *Router) handlePostGet(w http.ResponseWriter, r *http.Request) {	sess, ok := SessionFromContext(r.Context())	if !ok {		sess = nil	}	id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)	if err != nil {		log.Println(err)		http.NotFound(w, r)		return	}	post, err := ro.queries.GetPost(r.Context(), id)	if err != nil {		httpx.ErrorJSON(w, http.StatusInternalServerError, "internal server error")		return	}	comments, err := ro.queries.GetCommentsByPost(r.Context(), id)	if err != nil {		httpx.ErrorJSON(w, http.StatusInternalServerError, "internal server error")		return	}	ct := buildCommentTree(comments, sess)	log.Printf("comments: %+v", comments)	log.Printf("tree: %+v", ct)	ro.RenderPage(w, r, "post", post.Title, PostPageData{		GetPostRow: post,		Comments:   ct,	})}