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Feature: Shared lists & Invite Code invitation mechanism

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- Backend:
  - Migration 000002: add invite_code column to lists & list_members auto-population
  - ListStore: GetLists/GetList check owner_id & list_members; add GetInviteCode & JoinByInviteCode
  - HTTP API: add POST /api/lists/{id}/invite & POST /api/lists/join
- Android App:
  - DTOs & MitbringslApi: add JoinListRequestDto, InviteCodeResponseDto & endpoints
  - ListsScreen & ViewModel: add 'Liste beitreten' action button & dialog for entering invite code
  - ListDetailScreen & ViewModel: add 'Liste teilen' action icon in top bar with System Share Sheet
- ADB reinstall & launch verified ✅
This commit is contained in:
Tronax 2026-08-05 20:36:43 +02:00
parent 47b24dfcdf
commit 69591df12a
Signed by: Tronax
SSH key fingerprint: SHA256:2pKKXDZucWvaF/GzXNz0FY53EAO1YDLN80bqS+TTz/o
11 changed files with 457 additions and 56 deletions
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106
backend/internal/httpapi/lists.go
View file

@ -27,11 +27,20 @@ type createListRequest struct {
Name string `json:"name"`
}
type joinListRequest struct {
InviteCode string `json:"invite_code"`
}
type inviteCodeResponse struct {
InviteCode string `json:"invite_code"`
}
type listDTO struct {
ID string `json:"id"`
Name string `json:"name"`
UpdatedAt string `json:"updated_at"`
HLCTS int64 `json:"hlc_ts"`
ID string `json:"id"`
Name string `json:"name"`
InviteCode string `json:"invite_code,omitempty"`
UpdatedAt string `json:"updated_at"`
HLCTS int64 `json:"hlc_ts"`
}
type listDetailDTO struct {
@ -45,7 +54,7 @@ type listListResponse struct {
// --- handlers ---------------------------------------------------------------
// List returns all non-deleted lists for the authenticated user.
// List returns all non-deleted lists for the authenticated user (owner or member).
// GET /api/lists
func (h *ListHandler) List(w http.ResponseWriter, r *http.Request) {
userID, ok := userIDFromCtx(r)
@ -64,10 +73,11 @@ func (h *ListHandler) List(w http.ResponseWriter, r *http.Request) {
dtos := make([]listDTO, len(ls))
for i, l := range ls {
dtos[i] = listDTO{
ID: l.ID.String(),
Name: l.Name,
UpdatedAt: l.UpdatedAt.Format("2006-01-02T15:04:05Z07:00"),
HLCTS: l.HLCTS,
ID: l.ID.String(),
Name: l.Name,
InviteCode: l.InviteCode,
UpdatedAt: l.UpdatedAt.Format("2006-01-02T15:04:05Z07:00"),
HLCTS: l.HLCTS,
}
}
renderJSON(w, http.StatusOK, listListResponse{Lists: dtos})
@ -99,10 +109,11 @@ func (h *ListHandler) Create(w http.ResponseWriter, r *http.Request) {
return
}
renderJSON(w, http.StatusCreated, listDTO{
ID: l.ID.String(),
Name: l.Name,
UpdatedAt: l.UpdatedAt.Format("2006-01-02T15:04:05Z07:00"),
HLCTS: l.HLCTS,
ID: l.ID.String(),
Name: l.Name,
InviteCode: l.InviteCode,
UpdatedAt: l.UpdatedAt.Format("2006-01-02T15:04:05Z07:00"),
HLCTS: l.HLCTS,
})
}
@ -142,15 +153,76 @@ func (h *ListHandler) Get(w http.ResponseWriter, r *http.Request) {
renderJSON(w, http.StatusOK, listDetailDTO{
listDTO: listDTO{
ID: l.ID.String(),
Name: l.Name,
UpdatedAt: l.UpdatedAt.Format("2006-01-02T15:04:05Z07:00"),
HLCTS: l.HLCTS,
ID: l.ID.String(),
Name: l.Name,
InviteCode: l.InviteCode,
UpdatedAt: l.UpdatedAt.Format("2006-01-02T15:04:05Z07:00"),
HLCTS: l.HLCTS,
},
Items: its,
})
}
// Invite returns or generates the invite code for a list.
// POST /api/lists/{id}/invite
func (h *ListHandler) Invite(w http.ResponseWriter, r *http.Request) {
userID, ok := userIDFromCtx(r)
if !ok {
renderError(w, http.StatusUnauthorized, "Unauthorized", "Missing user context.")
return
}
listID, err := uuid.Parse(r.PathValue("id"))
if err != nil {
renderError(w, http.StatusBadRequest, "Bad request", "Invalid list ID.")
return
}
code, err := h.lists.GetInviteCode(r.Context(), listID, userID)
if err != nil {
slog.Error("get invite code failed", "error", err, "list_id", listID)
renderError(w, http.StatusBadRequest, "Bad request", "Could not get invite code.")
return
}
renderJSON(w, http.StatusOK, inviteCodeResponse{InviteCode: code})
}
// Join adds the authenticated user to a list using an invite code.
// POST /api/lists/join
func (h *ListHandler) Join(w http.ResponseWriter, r *http.Request) {
userID, ok := userIDFromCtx(r)
if !ok {
renderError(w, http.StatusUnauthorized, "Unauthorized", "Missing user context.")
return
}
var req joinListRequest
if !decodeJSON(w, r, &req) {
return
}
code := strings.TrimSpace(req.InviteCode)
if code == "" {
renderError(w, http.StatusBadRequest, "Bad request", "Invite code must not be empty.")
return
}
l, err := h.lists.JoinByInviteCode(r.Context(), userID, code)
if err != nil {
slog.Error("join list failed", "error", err, "user_id", userID, "code", code)
renderError(w, http.StatusBadRequest, "Bad request", "Ungültiger Einladungs-Code.")
return
}
renderJSON(w, http.StatusOK, listDTO{
ID: l.ID.String(),
Name: l.Name,
InviteCode: l.InviteCode,
UpdatedAt: l.UpdatedAt.Format("2006-01-02T15:04:05Z07:00"),
HLCTS: l.HLCTS,
})
}
// userIDFromCtx extracts the user UUID from the request context (set by RequireAuth).
func userIDFromCtx(r *http.Request) (uuid.UUID, bool) {
v := r.Context().Value(ctxKeyUserID)