1 files changed, 248 insertions, 0 deletions
diff --git a/internal/game/cmd_undig.go b/internal/game/cmd_undig.go
new file mode 100644
index 0000000..2cfae70
--- /dev/null
+++ b/internal/game/cmd_undig.go
@@ -0,0 +1,248 @@
+package game
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"gopkg.in/yaml.v3"
+	"thehouseoficarus/internal/net"
+	"thehouseoficarus/internal/player"
+	"thehouseoficarus/internal/world"
+)
+
+func (g *Game) executeUndig(sess *net.Session, args []string, rawInput string) {
+	if !g.checkAdmin(sess) {
+		sess.WriteLine("Unknown command.")
+		return
+	}
+	p := sess.Player
+	if p == nil {
+		return
+	}
+	if len(args) == 0 {
+		sess.WriteLine("Undig which direction?")
+		return
+	}
+
+	dir := g.World.ResolveExit(args[0])
+	if dir == "" {
+		sess.WriteLine("Invalid direction. Use north/south/east/west/up/down.")
+		return
+	}
+
+	curRoom, err := g.World.LoadRoom(p.RoomID)
+	if err != nil {
+		sess.WriteLine("Error loading current room.")
+		return
+	}
+
+	exitDef, ok := curRoom.Exits[dir]
+	if !ok {
+		sess.WriteLine(fmt.Sprintf("There is no exit to the %s from here.", dir))
+		return
+	}
+
+	targetID := exitDef.Room
+	targetRoom, err := g.World.LoadRoom(targetID)
+	if err != nil {
+		sess.WriteLine(fmt.Sprintf("Target room %d not found.", targetID))
+		return
+	}
+
+	sess.PendingUndigDir = string(dir)
+	sess.PendingUndigRoom = targetID
+	sess.State = net.StateUndigConfirm
+
+	sess.WriteLine(fmt.Sprintf("You are about to DELETE Room #%d (%s) and all exits leading to it.", targetID, targetRoom.Name))
+	sess.WriteLine("")
+	g.listUndigOrphans(sess, targetID)
+	sess.WriteLine("")
+	sess.WriteLine(fmt.Sprintf("Type UNDIG %s to confirm, or anything else to cancel.", strings.ToUpper(string(dir))))
+}
+
+func (g *Game) listUndigOrphans(sess *net.Session, targetID int) {
+	roomIndex := g.World.RoomIndex()
+
+	inbound := make(map[int]bool)
+	roomsDir := filepath.Join(g.DataDir, "rooms")
+	re := regexp.MustCompile(fmt.Sprintf(`\b%d\b`, targetID))
+	_ = filepath.WalkDir(roomsDir, func(path string, d os.DirEntry, err error) error {
+		if err != nil || d.IsDir() || filepath.Ext(path) != ".yaml" {
+			return nil
+		}
+		data, rerr := os.ReadFile(path)
+		if rerr != nil {
+			return nil
+		}
+		if re.MatchString(string(data)) {
+			idStr := strings.TrimSuffix(filepath.Base(path), ".yaml")
+			if rid, serr := strconv.Atoi(idStr); serr == nil && rid != targetID {
+				inbound[rid] = true
+			}
+		}
+		return nil
+	})
+
+	if len(inbound) == 0 {
+		return
+	}
+
+	var orphans []int
+	for rid := range inbound {
+		room, err := g.World.LoadRoom(rid)
+		if err != nil {
+			continue
+		}
+		hasOtherExit := false
+		for _, exitDef := range room.Exits {
+			if roomIndex[exitDef.Room] && exitDef.Room != targetID {
+				hasOtherExit = true
+				break
+			}
+		}
+		if !hasOtherExit {
+			orphans = append(orphans, rid)
+		}
+	}
+
+	if len(orphans) > 0 {
+		sess.WriteLine(g.colorize(sess, "warning",
+			fmt.Sprintf("WARNING: The following rooms will become unreachable after deletion:")))
+		for _, rid := range orphans {
+			room, err := g.World.LoadRoom(rid)
+			name := fmt.Sprintf("#%d", rid)
+			if err == nil {
+				name = fmt.Sprintf("#%d (%s)", rid, room.Name)
+			}
+			sess.WriteLine(fmt.Sprintf("  %s", name))
+		}
+	}
+}
+
+func (g *Game) handleUndigConfirm(sess *net.Session, input string) {
+	p := sess.Player
+	if p == nil {
+		sess.State = net.StateGame
+		g.writePrompt(sess)
+		return
+	}
+
+	choice := strings.TrimSpace(input)
+	dir := sess.PendingUndigDir
+	targetID := sess.PendingUndigRoom
+	sess.PendingUndigDir = ""
+	sess.PendingUndigRoom = 0
+	sess.State = net.StateGame
+
+	if dir == "" || targetID == 0 {
+		g.writePrompt(sess)
+		return
+	}
+
+	expected := "UNDIG " + strings.ToUpper(dir)
+	if strings.ToUpper(choice) != expected {
+		sess.WriteLine("Undig cancelled.")
+		g.writePrompt(sess)
+		return
+	}
+
+	g.performUndig(sess, p, targetID)
+	g.writePrompt(sess)
+}
+
+func (g *Game) performUndig(sess *net.Session, p *player.Player, targetID int) {
+	targetRoom, err := g.World.LoadRoom(targetID)
+	roomName := fmt.Sprintf("#%d", targetID)
+	if err == nil {
+		roomName = fmt.Sprintf("#%d (%s)", targetID, targetRoom.Name)
+	} else {
+		sess.WriteLine(fmt.Sprintf("Target room %d no longer exists.", targetID))
+		return
+	}
+
+	roomsDir := filepath.Join(g.DataDir, "rooms")
+	re := regexp.MustCompile(fmt.Sprintf(`\b%d\b`, targetID))
+	var cleaned int
+	_ = filepath.WalkDir(roomsDir, func(path string, d os.DirEntry, err error) error {
+		if err != nil || d.IsDir() || filepath.Ext(path) != ".yaml" {
+			return nil
+		}
+		data, rerr := os.ReadFile(path)
+		if rerr != nil {
+			return nil
+		}
+		if !re.MatchString(string(data)) {
+			return nil
+		}
+
+		idStr := strings.TrimSuffix(filepath.Base(path), ".yaml")
+		rid, serr := strconv.Atoi(idStr)
+		if serr != nil || rid == targetID {
+			return nil
+		}
+
+		var room world.Room
+		if yerr := yaml.Unmarshal(data, &room); yerr != nil {
+			return nil
+		}
+		if room.Exits == nil {
+			return nil
+		}
+
+		changed := false
+		for ed, exitDef := range room.Exits {
+			if exitDef.Room == targetID {
+				delete(room.Exits, ed)
+				changed = true
+			}
+		}
+
+		if changed {
+			newData, merr := yaml.Marshal(&room)
+			if merr != nil {
+				return nil
+			}
+			if werr := os.WriteFile(path, newData, 0644); werr != nil {
+				return werr
+			}
+			cleaned++
+		}
+		return nil
+	})
+
+	targetPath, ok := g.World.GetRoomPath(targetID)
+	if !ok {
+		sess.WriteLine(fmt.Sprintf("Room file for %d not found.", targetID))
+		return
+	}
+	if rerr := os.Remove(targetPath); rerr != nil {
+		sess.WriteLine(fmt.Sprintf("Error deleting room file: %v", rerr))
+		return
+	}
+
+	g.World.RebuildRoomIndex(g.DataDir)
+
+	if p.RoomID == targetID {
+		p.RoomID = 0
+	}
+
+	for _, other := range g.Hub.AllSessions() {
+		if other.Player != nil && other.Player.RoomID == targetID {
+			other.Player.RoomID = p.RoomID
+			if g.Hub != nil {
+				g.Hub.EnterRoom(other, p.RoomID)
+			}
+			other.WriteLine(fmt.Sprintf("The room around you dissolves. You find yourself elsewhere."))
+			g.doLook(other)
+		}
+	}
+
+	g.MobStore.RemoveMobsInRoom(targetID)
+	g.World.ClearRoomState(targetID)
+
+	sess.WriteLine(fmt.Sprintf("Deleted room %s and %d exit(s) pointing to it.", roomName, cleaned))
+}