Add video picker and Discord video attachments.

The picker accepts one MP4 or WebM, the thread lightbox zooms photos, and Discord gets the video as a file on a follow-up message so photo embeds still render.

internal/web/events_test.go

@@ -1,8 +1,10 @@
 package web
 
 import (
+	"bytes"
 	"context"
 	"encoding/json"
+	"io"
 	"net/http"
 	"net/url"
 	"strings"
@@ -237,20 +239,72 @@ func assertPostEvent(t *testing.T, got, want events.PostEvent) {
 	}
 }
 
-func TestPostEventOmitsVideos(t *testing.T) {
+func TestPostEventIncludesPhotosAndVideos(t *testing.T) {
 	t.Parallel()
 
 	srv, _ := newTestServer(t, Config{})
 	got := srv.postEvent(&store.Post{
-		ID:     "root-1",
-		Title:  "Clip",
-		Body:   "Photo and video.",
+		ID:    "root-1",
+		Title: "Clip",
+		Body:  "Photo and video.",
 		Images: []store.PostImage{
 			{PublicURL: "https://cdn.example/a.jpg", Description: "Still", Kind: store.MediaKindImage},
 			{PublicURL: "https://cdn.example/a.mp4", Description: "Walkthrough", Kind: store.MediaKindVideo},
 		},
 	}, nil, nil)
-	if len(got.Images) != 1 || got.Images[0].URL != "https://cdn.example/a.jpg" {
+	if len(got.Images) != 2 ||
+		got.Images[0].URL != "https://cdn.example/a.jpg" || got.Images[0].Kind != store.MediaKindImage ||
+		got.Images[1].URL != "https://cdn.example/a.mp4" || got.Images[1].Kind != store.MediaKindVideo {
 		t.Fatalf("event images = %+v", got.Images)
 	}
 }
+
+func TestCreatePostHoldsVideoUntilRelease(t *testing.T) {
+	t.Parallel()
+
+	rec := &events.Recording{}
+	blobs := &recordingImageBlob{}
+	srv, mem := newTestServer(t, Config{
+		Events:                 rec,
+		Blob:                   blobs,
+		HoldUploadUntilDiscord: true,
+	})
+	handler := srv.Handler()
+	user := seedUser(t, mem, uniq("hold-video"), "hunter22", store.RoleUser)
+	cookies := loginUser(t, handler, user.Username, "hunter22")
+	csrf := csrfForCookies(t, handler, cookies)
+	clip := tinyMP4()
+
+	res := multipartPost(t, handler, "/submit", map[string][]string{
+		"_csrf": {csrf},
+		"title": {"Valve clip"},
+		"body":  {"Watch the handle."},
+		"city":  {"Oakland"},
+	}, []multipartTestFile{{name: "walk.mp4", body: clip}}, cookies)
+	if res.Code != http.StatusSeeOther {
+		t.Fatalf("submit status = %d: %s", res.Code, res.Body.String())
+	}
+
+	got := rec.Snapshot()
+	if len(got) != 1 {
+		t.Fatalf("published %d events, want 1: %#v", len(got), got)
+	}
+	created, ok := got[0].(events.PostCreated)
+	if !ok {
+		t.Fatalf("event %T, want PostCreated", got[0])
+	}
+	if len(created.Media) != 1 ||
+		created.Media[0].Kind != store.MediaKindVideo ||
+		created.Media[0].ContentType != "video/mp4" ||
+		created.Media[0].Body == nil {
+		t.Fatalf("held media = %+v", created.Media)
+	}
+	if created.Release == nil {
+		t.Fatal("missing Release")
+	}
+	body, err := io.ReadAll(created.Media[0].Body)
+	if err != nil || !bytes.Equal(body, clip) {
+		t.Fatalf("held video body = %d bytes err=%v", len(body), err)
+	}
+	created.Release()
+}