feat(admin): multi-select and delete rooms

3 files changed, 209 insertions, 11 deletions

diff --git a/internal/admin/api_rooms_bulk_delete.go b/internal/admin/api_rooms_bulk_delete.go
new file mode 100644
index 0000000..6aa0181
--- /dev/null
+++ b/internal/admin/api_rooms_bulk_delete.go
@@ -0,0 +1,132 @@
+package admin
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+
+	"thehouseoficarus/internal/world"
+)
+
+type bulkDeleteRequest struct {
+	IDs []int `json:"ids"`
+}
+
+func (s *AdminServer) handleBulkDelete(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	body, readErr := io.ReadAll(r.Body)
+	r.Body.Close()
+	if readErr != nil {
+		writeJSON(w, map[string]any{"error": fmt.Sprintf("read body: %v", readErr)})
+		return
+	}
+
+	var req bulkDeleteRequest
+	if err := json.Unmarshal(body, &req); err != nil {
+		writeJSON(w, map[string]any{"error": fmt.Sprintf("invalid json: %v", err)})
+		return
+	}
+
+	if len(req.IDs) == 0 {
+		writeJSON(w, map[string]any{"error": "no room ids"})
+		return
+	}
+
+	type roomSnapshot struct {
+		id         int
+		path       string
+		oldContent []byte
+	}
+
+	snapshots := make([]roomSnapshot, 0, len(req.IDs))
+	for _, id := range req.IDs {
+		path, ok := s.world.GetRoomPath(id)
+		if !ok {
+			writeJSON(w, map[string]any{"error": fmt.Sprintf("room %d not found", id)})
+			return
+		}
+		oldContent, snapErr := snapshotFile(path)
+		if snapErr != nil {
+			writeJSON(w, map[string]any{"error": fmt.Sprintf("snapshot room %d: %v", id, snapErr)})
+			return
+		}
+		snapshots = append(snapshots, roomSnapshot{id: id, path: path, oldContent: oldContent})
+	}
+
+	deletedSet := make(map[int]bool, len(req.IDs))
+	for _, snap := range snapshots {
+		s.detachRoomFromCourse(snap.id)
+		if err := os.Remove(snap.path); err != nil {
+			writeJSON(w, map[string]any{"error": fmt.Sprintf("delete room %d: %v", snap.id, err)})
+			return
+		}
+		deletedSet[snap.id] = true
+	}
+
+	s.world.RebuildRoomIndex(s.dataDir)
+	for _, snap := range snapshots {
+		s.world.ClearRoomState(snap.id)
+	}
+
+	allIDs, _ := listRoomIDs(s.dataDir)
+	var extraFiles []ExtraFile
+	var exitCleaned int
+	for _, otherID := range allIDs {
+		if deletedSet[otherID] {
+			continue
+		}
+		otherRoom, loadErr := s.world.LoadRoom(otherID)
+		if loadErr != nil {
+			continue
+		}
+		changed := false
+		for _, dir := range world.ExitOrder {
+			exit, exists := otherRoom.Exits[dir]
+			if !exists || !deletedSet[exit.Room] {
+				continue
+			}
+			delete(otherRoom.Exits, dir)
+			changed = true
+		}
+		if changed {
+			otherPath, pathOk := s.world.GetRoomPath(otherID)
+			if pathOk {
+				oldExtra, _ := snapshotFile(otherPath)
+				newContent, writeErr := writeYAMLFile(otherPath, otherRoom)
+				if writeErr != nil {
+					continue
+				}
+				extraFiles = append(extraFiles, ExtraFile{
+					FilePath:   otherPath,
+					OldContent: oldExtra,
+					NewContent: newContent,
+				})
+				exitCleaned++
+			}
+		}
+	}
+
+	for i := 1; i < len(snapshots); i++ {
+		extraFiles = append(extraFiles, ExtraFile{
+			FilePath:   snapshots[i].path,
+			OldContent: snapshots[i].oldContent,
+			IsDelete:   true,
+		})
+	}
+
+	s.undoStack.Push(ChangeDesc{
+		Description: fmt.Sprintf("delete %d rooms (cleaned %d exits)", len(req.IDs), exitCleaned),
+		FilePath:    snapshots[0].path,
+		OldContent:  snapshots[0].oldContent,
+		IsDelete:    true,
+		ExtraFiles:  extraFiles,
+	})
+
+	writeJSON(w, map[string]any{"ok": true, "count": len(req.IDs)})
+}
diff --git a/internal/admin/server.go b/internal/admin/server.go
index c33bd21..67de0ab 100644
--- a/internal/admin/server.go
+++ b/internal/admin/server.go
@@ -126,6 +126,7 @@ func NewServer(cfg *config.Config, useTLS bool, accountStore *player.AccountStor
 	apiMux.HandleFunc("/api/rooms/move", s.handleRoomMove)
 	apiMux.HandleFunc("/api/rooms/rename", s.handleRoomRename)
 	apiMux.HandleFunc("/api/rooms/bulk-edit", s.handleBulkEdit)
+	apiMux.HandleFunc("/api/rooms/bulk-delete", s.handleBulkDelete)
 	apiMux.HandleFunc("/api/rooms", s.handleRooms)
 	apiMux.HandleFunc("/api/rooms/new-empty", s.handleCreateEmptyRoom)
 	apiMux.HandleFunc("/api/rooms/", s.handleRoomByID)
diff --git a/internal/admin/static/map.js b/internal/admin/static/map.js
index 1f67275..e053dda 100644
--- a/internal/admin/static/map.js
+++ b/internal/admin/static/map.js
@@ -42,7 +42,7 @@ function onMapMouseMove(e) {
   if (!dragging) return;
   var moved = Math.abs(e.clientX - startX) >= 4 || Math.abs(e.clientY - startY) >= 4;
 
-  if (delFromId && moved && !delDrag) { delDrag = true; }
+  if (delFromId && moved && !delDrag && multiSelectedIds.size === 0) { delDrag = true; }
   if (delDrag && moved) {
     delOneWay = e.ctrlKey;
     updateDelDragTarget(e);
@@ -81,7 +81,11 @@ function onMapMouseUp(e) {
   var moved = Math.abs(e.clientX - startX) >= 4 || Math.abs(e.clientY - startY) >= 4;
 
   if (delFromId && !delDrag && !moved) {
-    showRoomContextMenu(startX, startY, delFromId);
+    if (multiSelectedIds.size > 0) {
+      showBulkDeleteContextMenu(startX, startY, delFromId);
+    } else {
+      showRoomContextMenu(startX, startY, delFromId);
+    }
     clearDelHighlight();
     dragging = false; dragRoom = false; delFromId = null; delTargetId = null; delDrag = false;
     if (document.activeElement && document.activeElement.blur) document.activeElement.blur();
@@ -368,7 +372,7 @@ function renderMap(data) {
     var onUdBtn = e.target.classList.contains('ud-btn');
     var onNavBtn = e.target.classList.contains('nav-btn');
 
-    if (!e.shiftKey && multiSelectedIds.size > 0) {
+    if (e.button === 0 && !e.shiftKey && multiSelectedIds.size > 0) {
       clearMultiSelect();
     }
 
@@ -2263,6 +2267,58 @@ function showRoomContextMenu(x, y, id) {
   clampMenuToViewport(menu);
 }
 
+function showBulkDeleteContextMenu(x, y, clickedId) {
+  var overlay = document.createElement('div');
+  overlay.className = 'cm-overlay';
+  var closeAll = function() {
+    if (overlay._subHideTimer) { clearTimeout(overlay._subHideTimer); overlay._subHideTimer = null; }
+    overlay.remove(); menu.remove();
+  };
+  overlay.onclick = closeAll;
+  overlay.addEventListener('contextmenu', function(e) {
+    e.preventDefault();
+    e.stopPropagation();
+    closeAll();
+  });
+
+  var menu = document.createElement('div');
+  menu.className = 'cm-menu';
+  menu.style.left = x + 'px';
+  menu.style.top = y + 'px';
+  menu.oncontextmenu = function(e) { e.preventDefault(); };
+
+  var n = multiSelectedIds.size;
+  var delBtn = document.createElement('button');
+  delBtn.textContent = 'Delete ' + n + ' room' + (n !== 1 ? 's' : '');
+  delBtn.className = 'danger';
+  delBtn.onclick = function() {
+    closeAll();
+    deleteMultiRooms();
+  };
+  menu.appendChild(delBtn);
+
+  document.body.appendChild(overlay);
+  document.body.appendChild(menu);
+
+  clampMenuToViewport(menu);
+}
+
+function deleteMultiRooms() {
+  var n = multiSelectedIds.size;
+  var cb = document.getElementById('confirmDelete');
+  if (!cb || cb.checked) {
+    if (!confirm('Delete ' + n + ' room' + (n !== 1 ? 's' : '') + '?')) return;
+  }
+  var ids = Array.from(multiSelectedIds);
+  API.post('/api/rooms/bulk-delete', {ids: ids}).then(function(res) {
+    var msg = 'Deleted ' + n + ' room' + (n !== 1 ? 's' : '');
+    notify(msg, 'success');
+    updateUndoBar();
+    clearMultiSelect();
+    loadMap();
+  }).catch(function(e) { notify('Delete failed: ' + extractError(e), 'error'); });
+}
+
 // buildSubmenuItem constructs a parent menu row ("Insert Room"/"Remove Room")
 // that carries a nested submenu of the room's exits. The submenu is
 // revealed by both hover (Windows-style: mouseenter with a small dismiss delay
@@ -2572,6 +2628,19 @@ function applyLinkHighlight(fromId, toId) {
   g.appendChild(line);
 }
 
+function restoreRoomStroke(el, id) {
+  if (multiSelectedIds.has(id)) {
+    el.setAttribute('stroke', '#5cf');
+    el.setAttribute('stroke-width', '3.5');
+  } else if (selectedRoom === id) {
+    el.setAttribute('stroke', '#fff');
+    el.setAttribute('stroke-width', '3');
+  } else {
+    el.setAttribute('stroke', el.getAttribute('fill') || '#3a3a6a');
+    el.setAttribute('stroke-width', '1.5');
+  }
+}
+
 function clearLinkHighlight() {
   var line = document.getElementById('__hl_line');
   if (line) line.remove();
@@ -2579,15 +2648,13 @@ function clearLinkHighlight() {
   if (linkFromId) {
     var el = document.querySelector('.rm[data-id="'+linkFromId+'"]');
     if (el) {
-      el.setAttribute('stroke', selectedRoom === linkFromId ? '#fff' : (el.getAttribute('fill') || '#3a3a6a'));
-      el.setAttribute('stroke-width', selectedRoom === linkFromId ? '3' : '1.5');
+      restoreRoomStroke(el, linkFromId);
     }
   }
   if (linkTargetId) {
     var el = document.querySelector('.rm[data-id="'+linkTargetId+'"]');
     if (el) {
-      el.setAttribute('stroke', selectedRoom === linkTargetId ? '#fff' : (el.getAttribute('fill') || '#3a3a6a'));
-      el.setAttribute('stroke-width', selectedRoom === linkTargetId ? '3' : '1.5');
+      restoreRoomStroke(el, linkTargetId);
     }
   }
 }
@@ -2666,15 +2733,13 @@ function clearDelHighlight() {
   if (delFromId) {
     var el = document.querySelector('.rm[data-id="'+delFromId+'"]');
     if (el) {
-      el.setAttribute('stroke', selectedRoom === delFromId ? '#fff' : (el.getAttribute('fill') || '#3a3a6a'));
-      el.setAttribute('stroke-width', selectedRoom === delFromId ? '3' : '1.5');
+      restoreRoomStroke(el, delFromId);
     }
   }
   if (delTargetId) {
     var el = document.querySelector('.rm[data-id="'+delTargetId+'"]');
     if (el) {
-      el.setAttribute('stroke', selectedRoom === delTargetId ? '#fff' : (el.getAttribute('fill') || '#3a3a6a'));
-      el.setAttribute('stroke-width', selectedRoom === delTargetId ? '3' : '1.5');
+      restoreRoomStroke(el, delTargetId);
     }
   }
 }