package common

import (
	"encoding/json"
	"fmt"
)

// Scene metadata is exported from the installed Client's RuntimeFloor tables.
// A complete group list allows us to exclude deleted/client-owned groups
// without maintaining special cases for individual maps or group IDs.
type sceneMetadata struct {
	ClientVersion string `json:"client_version"`
	Floors        map[uint32]struct {
		StartAnchor *AnchorItem                        `json:"start_anchor"`
		Monsters    map[uint32]map[uint32]TeleportInfo `json:"monsters"`
		GroupCount  int                                `json:"group_count"`
		Groups      map[uint32]struct {
			LoadSide string `json:"load_side"`
			Deleted  bool   `json:"is_deleted"`
		} `json:"groups"`
	} `json:"floors"`
}

func applySceneMetadata(res *JsonConfig) {
	raw, err := ReadResourceFile("resources/SceneMetadata.json")
	if err != nil {
		return
	}
	var metadata sceneMetadata
	if err := json.Unmarshal(raw, &metadata); err != nil {
		LogInfo("[SCENE] Invalid SceneMetadata: %v", err)
		return
	}
	config, err := LoadRuntimeConfig()
	if err != nil || metadata.ClientVersion != config.ClientVersion {
		LogInfo("[SCENE] SceneMetadata Client revision does not match runtime config; not applied")
		return
	}
	for entryID, configs := range res.LevelOutputConfigs {
		for name, scene := range configs {
			var planeID, floorID uint32
			if n, _ := fmt.Sscanf(name, "P%d_F%d", &planeID, &floorID); n != 2 {
				continue
			}
			floor, ok := metadata.Floors[floorID]
			if !ok {
				continue
			}
			if floor.GroupCount == 0 || len(floor.Groups) != floor.GroupCount {
				LogInfo("[SCENE] Incomplete group metadata for floor %d; not applied", floorID)
				continue
			}
			if floor.StartAnchor != nil {
				res.SceneAnchors[entryID] = []AnchorItem{*floor.StartAnchor}
			}
			for groupID := range scene.Scenes {
				group, exists := floor.Groups[groupID]
				if !exists || group.Deleted || group.LoadSide == "Client" {
					delete(scene.Scenes, groupID)
					LogInfo("[SCENE] Excluded group entry=%d floor=%d group=%d present=%t deleted=%t side=%s", entryID, floorID, groupID, exists, group.Deleted, group.LoadSide)
					continue
				}
				data := scene.Scenes[groupID]
				for index := range data.Monsters {
					monster := &data.Monsters[index]
					if placement, ok := floor.Monsters[groupID][monster.InstID]; ok {
						monster.Pos, monster.Rot = placement.Pos, placement.Rot
					}
				}
				scene.Scenes[groupID] = data
			}
		}
	}
}