feat(backend): implement HTTP API, auth, chat, and admin surfaces

Expose learning, registration controls, mentor chat, realtime WebSocket, and staff administration.

backend/internal/api/video_accept_test.go

@@ -0,0 +1,75 @@
+package api
+
+import (
+	"bytes"
+	"mime/multipart"
+	"net/textproto"
+	"testing"
+)
+
+type seekBuf struct {
+	*bytes.Reader
+}
+
+func (s seekBuf) Close() error { return nil }
+
+func TestAcceptAdminVideoMP4(t *testing.T) {
+	// Minimal ftyp box header
+	payload := []byte{
+		0x00, 0x00, 0x00, 0x18, 'f', 't', 'y', 'p',
+		'i', 's', 'o', 'm', 0x00, 0x00, 0x02, 0x00,
+		'i', 's', 'o', 'm', 'i', 's', 'o', '2',
+	}
+	h := &multipart.FileHeader{
+		Filename: "lesson.mp4",
+		Size:     int64(len(payload)),
+		Header:   textproto.MIMEHeader{"Content-Type": []string{"video/mp4"}},
+	}
+	got, err := acceptAdminVideo(h, seekBuf{bytes.NewReader(payload)})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got.Ext != ".mp4" || got.Mime != "video/mp4" {
+		t.Fatalf("got %+v", got)
+	}
+}
+
+func TestAcceptAdminVideoWebM(t *testing.T) {
+	payload := []byte{0x1A, 0x45, 0xDF, 0xA3, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08}
+	h := &multipart.FileHeader{
+		Filename: "clip.webm",
+		Size:     int64(len(payload)),
+		Header:   textproto.MIMEHeader{"Content-Type": []string{"video/webm"}},
+	}
+	got, err := acceptAdminVideo(h, seekBuf{bytes.NewReader(payload)})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got.Ext != ".webm" || got.Mime != "video/webm" {
+		t.Fatalf("got %+v", got)
+	}
+}
+
+func TestAcceptAdminVideoRejectsMOV(t *testing.T) {
+	payload := []byte{0x00, 0x00, 0x00, 0x14, 'f', 't', 'y', 'p', 'q', 't', ' ', ' '}
+	h := &multipart.FileHeader{
+		Filename: "clip.mov",
+		Size:     int64(len(payload)),
+		Header:   textproto.MIMEHeader{"Content-Type": []string{"video/quicktime"}},
+	}
+	if _, err := acceptAdminVideo(h, seekBuf{bytes.NewReader(payload)}); err == nil {
+		t.Fatal("expected rejection")
+	}
+}
+
+func TestAcceptAdminVideoRejectsMismatch(t *testing.T) {
+	payload := []byte{0x1A, 0x45, 0xDF, 0xA3, 0x01, 0x02, 0x03, 0x04}
+	h := &multipart.FileHeader{
+		Filename: "clip.mp4",
+		Size:     int64(len(payload)),
+		Header:   textproto.MIMEHeader{"Content-Type": []string{"video/mp4"}},
+	}
+	if _, err := acceptAdminVideo(h, seekBuf{bytes.NewReader(payload)}); err == nil {
+		t.Fatal("expected content mismatch rejection")
+	}
+}