1 files changed, 161 insertions, 0 deletions
diff --git a/internal/web/handlers_pages.go b/internal/web/handlers_pages.go
new file mode 100644
index 0000000..1b79280
--- /dev/null
+++ b/internal/web/handlers_pages.go
@@ -0,0 +1,161 @@
+package web
+
+import (
+	"errors"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/gramanas/blogspace/internal/markdown"
+	"github.com/gramanas/blogspace/internal/slug"
+	"github.com/gramanas/blogspace/internal/store"
+)
+
+// Page slugs that would collide with blog routes.
+var reservedPageSlugs = map[string]bool{"media": true, "static": true, "feed.xml": true}
+
+func (s *Server) handlePages(w http.ResponseWriter, r *http.Request) {
+	pages, err := s.st.ListPages(r.Context(), currentBlog(r).ID)
+	if err != nil {
+		s.serverError(w, err)
+		return
+	}
+	s.render(w, r, "dashboard/pages.html", map[string]any{"pages": pages})
+}
+
+// loadPage fetches the page named in the URL, or nil (having written the response) on failure.
+func (s *Server) loadPage(w http.ResponseWriter, r *http.Request) *store.Page {
+	id, _ := strconv.ParseInt(r.PathValue("id"), 10, 64)
+	p, err := s.st.PageByID(r.Context(), currentBlog(r).ID, id)
+	if err != nil {
+		if errors.Is(err, store.ErrNotFound) {
+			http.NotFound(w, r)
+		} else {
+			s.serverError(w, err)
+		}
+		return nil
+	}
+	return p
+}
+
+func (s *Server) handlePageForm(w http.ResponseWriter, r *http.Request) {
+	p := &store.Page{ShowInNav: true}
+	if r.PathValue("id") != "" {
+		if p = s.loadPage(w, r); p == nil {
+			return
+		}
+	}
+	s.render(w, r, "dashboard/page_form.html", map[string]any{"page": p})
+}
+
+func (s *Server) handlePageSave(w http.ResponseWriter, r *http.Request) {
+	blog := currentBlog(r)
+	p := &store.Page{BlogID: blog.ID}
+	if r.PathValue("id") != "" {
+		if p = s.loadPage(w, r); p == nil {
+			return
+		}
+	}
+	p.Title = strings.TrimSpace(r.FormValue("title"))
+	p.Slug = strings.TrimSpace(r.FormValue("slug"))
+	p.IntroMD = r.FormValue("intro")
+	p.ShowInNav = r.FormValue("show_in_nav") == "on"
+	autoSlug := p.Slug == ""
+	if autoSlug {
+		p.Slug = slug.Make(p.Title)
+	}
+	var msg string
+	switch {
+	case p.Title == "" || len(p.Title) > 120:
+		msg = "Title is required (max 120 characters)."
+	case !slug.Valid(p.Slug) || reservedPageSlugs[p.Slug]:
+		msg = "Slug may only contain lowercase letters, digits and dashes (and not be a reserved word)."
+	}
+	if msg != "" {
+		s.renderStatus(w, r, http.StatusBadRequest, "dashboard/page_form.html", map[string]any{"page": p, "error": msg})
+		return
+	}
+	p.IntroHTML = markdown.Render(p.IntroMD)
+	var err error
+	base := p.Slug
+	for n := 1; ; n++ { // generated slugs get -2, -3… on collision; typed ones report the conflict
+		p.Slug = slug.WithSuffix(base, n)
+		if p.ID == 0 {
+			var created *store.Page
+			if created, err = s.st.CreatePage(r.Context(), p); err == nil {
+				p = created
+			}
+		} else {
+			err = s.st.UpdatePage(r.Context(), p)
+		}
+		if !errors.Is(err, store.ErrConflict) || !autoSlug || n >= 50 {
+			break
+		}
+	}
+	if err != nil {
+		if errors.Is(err, store.ErrConflict) {
+			s.renderStatus(w, r, http.StatusConflict, "dashboard/page_form.html", map[string]any{"page": p, "error": "A page with that slug already exists."})
+			return
+		}
+		s.serverError(w, err)
+		return
+	}
+	redirectOK(w, r, "/b/"+blog.Subdomain+"/pages/"+strconv.FormatInt(p.ID, 10)+"/edit", "Saved. Refresh your blog to see it.")
+}
+
+func (s *Server) handlePageDeleteConfirm(w http.ResponseWriter, r *http.Request) {
+	p := s.loadPage(w, r)
+	if p == nil {
+		return
+	}
+	s.render(w, r, "dashboard/confirm.html", map[string]any{
+		"what":   "the page \"" + p.Title + "\" and all " + strconv.Itoa(p.PostCount) + " of its posts",
+		"action": r.URL.Path,
+		"back":   "/b/" + currentBlog(r).Subdomain + "/pages",
+		"isHome": p.IsHome,
+	})
+}
+
+func (s *Server) handlePageDelete(w http.ResponseWriter, r *http.Request) {
+	p := s.loadPage(w, r)
+	if p == nil {
+		return
+	}
+	if p.IsHome {
+		s.plainError(w, http.StatusBadRequest, "The home page cannot be deleted. Make another page the home page first.")
+		return
+	}
+	if err := s.st.DeletePage(r.Context(), p.BlogID, p.ID); err != nil {
+		s.serverError(w, err)
+		return
+	}
+	redirectOK(w, r, "/b/"+currentBlog(r).Subdomain+"/pages", "Page deleted.")
+}
+
+func (s *Server) handlePageMove(w http.ResponseWriter, r *http.Request) {
+	p := s.loadPage(w, r)
+	if p == nil {
+		return
+	}
+	dir := 1
+	if r.FormValue("dir") == "up" {
+		dir = -1
+	}
+	if err := s.st.MovePage(r.Context(), p.BlogID, p.ID, dir); err != nil {
+		s.serverError(w, err)
+		return
+	}
+	http.Redirect(w, r, "/b/"+currentBlog(r).Subdomain+"/pages", http.StatusSeeOther)
+}
+
+func (s *Server) handlePageHome(w http.ResponseWriter, r *http.Request) {
+	p := s.loadPage(w, r)
+	if p == nil {
+		return
+	}
+	if err := s.st.SetHomePage(r.Context(), p.BlogID, p.ID); err != nil {
+		s.serverError(w, err)
+		return
+	}
+	redirectOK(w, r, "/b/"+currentBlog(r).Subdomain+"/pages", "\""+p.Title+"\" is now the home page.")
+}