package d2datadict

import (
	"log"

	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2fileformats/d2txt"
)

// LevelMazeDetailsRecord is a representation of a row from lvlmaze.txt
// these records define the parameters passed to the maze level generator
type LevelMazeDetailsRecord struct {
	// descriptive, not loaded in game. Corresponds with Name field in
	// Levels.txt
	Name string // Name

	// ID from Levels.txt
	// NOTE: Cave 1 is the Den of Evil, its associated treasure level is quest
	// only.
	LevelID int // Level

	// the minimum number of .ds1 map sections that will make up the maze in
	// Normal, Nightmare and Hell difficulties.
	NumRoomsNormal    int // Rooms
	NumRoomsNightmare int // Rooms(N)
	NumRoomsHell      int // Rooms(H)

	// the size in the X\Y direction of any component ds1 map section.
	SizeX int // SizeX
	SizeY int // SizeY

	// Possibly related to how adjacent .ds1s are connected with each other,
	// but what the different values are for is unknown.
	// Merge int // Merge

	// Included in the original Diablo II beta tests and in the demo version.
	// Beta
}

// LevelMazeDetails stores all of the LevelMazeDetailsRecords
var LevelMazeDetails map[int]*LevelMazeDetailsRecord //nolint:gochecknoglobals // Currently global by design

// LoadLevelMazeDetails loads LevelMazeDetailsRecords from text file
func LoadLevelMazeDetails(file []byte) {
	LevelMazeDetails = make(map[int]*LevelMazeDetailsRecord)

	d := d2txt.LoadDataDictionary(file)
	for d.Next() {
		record := &LevelMazeDetailsRecord{
			Name:              d.String("Name"),
			LevelID:           d.Number("Level"),
			NumRoomsNormal:    d.Number("Rooms"),
			NumRoomsNightmare: d.Number("Rooms(N)"),
			NumRoomsHell:      d.Number("Rooms(H)"),
			SizeX:             d.Number("SizeX"),
			SizeY:             d.Number("SizeY"),
		}
		LevelMazeDetails[record.LevelID] = record
	}

	if d.Err != nil {
		panic(d.Err)
	}

	log.Printf("Loaded %d LevelMazeDetails records", len(LevelMazeDetails))
}