package world

import "gitlab.com/beoran/woe/monolog"
import "gitlab.com/beoran/woe/sitef"
import "errors"

/* Elements of the WOE game world.
 * Only Zones, Rooms and their Exits, Items,
 * Mobiles & Characters are saved
 * and loaded from disk. All the rest
 * is kept statically delared in code for simplicity.
 */

type World struct {
	Name         string
	MOTD         string
	dirname      string
	entitymap    map[string]*Entity
	zonemap      map[string]*Zone
	zones        []*Zone
	charactermap map[string]*Character
	characters   []Character
	roommap      map[string]*Room
	rooms        []Room
	itemmap      map[string]*Item
	items        []Item
	mobilemap    map[string]*Mobile
	mobiles      []Mobile
	accounts     []*Account
	accountmap   map[string]*Account
}

func (me *World) AddWoeDefaults() {
	/*
	   me.AddSpecies(NewSpecies("sp_human"  , "Human"))
	   me.AddSpecies(NewSpecies("sp_neosa"  , "Neosa"))
	   me.AddSpecies(NewSpecies("sp_mantu"  , "Mantu"))
	   me.AddSpecies(NewSpecies("sp_cyborg" , "Cyborg"))
	   me.AddSpecies(NewSpecies("sp_android", "Android"))
	*/
}

func NewWorld(name string, motd string, dirname string) *World {
	world := new(World)
	world.Name = name
	world.MOTD = motd
	world.dirname = dirname
	world.accountmap = make(map[string]*Account)
	world.itemmap = make(map[string]*Item)
	world.roommap = make(map[string]*Room)
	world.charactermap = make(map[string]*Character)

	world.AddWoeDefaults()
	return world
}

func HaveID(ids []string, id string) bool {
	for index := 0; index < len(ids); index++ {
		if ids[index] == id {
			return true
		}
	}
	return false
}

func (me *World) AddEntity(entity *Entity) {
	me.entitymap[entity.ID] = entity
}

func (me *World) AddZone(zone *Zone) {
	me.zones = append(me.zones, zone)
	me.zonemap[zone.ID] = zone
	me.AddEntity(&zone.Entity)
}

// Save an account as a sitef file.
func (me *World) Save(dirname string) (err error) {
	path := SavePathFor(dirname, "world", me.Name)

	rec := sitef.NewRecord()
	rec.Put("name", me.Name)
	rec.Put("motd", me.MOTD)
	monolog.Debug("Saving World record: %s %v", path, rec)
	return sitef.SaveRecord(path, *rec)
}

// Load a world from a sitef file.
func LoadWorld(dirname string, name string) (world *World, err error) {

	path := SavePathFor(dirname, "world", name)

	records, err := sitef.ParseFilename(path)
	if err != nil {
		return nil, err
	}

	if len(records) < 1 {
		return nil, errors.New("No record found!")
	}

	record := records[0]
	monolog.Info("Loading World record: %s %v", path, record)

	world = NewWorld(record.Get("name"), record.Get("motd"), dirname)
	monolog.Info("Loaded World: %s %v", path, world)
	return world, nil
}

// Returns an acccount that has already been loaded or nil if not found
func (me *World) GetAccount(name string) (account *Account) {
	account, ok := me.accountmap[name]
	if !ok {
		return nil
	}
	return account
}

// Loads an account to be used with this world. Characters will be linked.
// If the account was already loaded, returns that in stead.
func (me *World) LoadAccount(name string) (account *Account, err error) {
	account = me.GetAccount(name)
	if account != nil {
		return account, nil
	}

	account, err = LoadAccount(me.dirname, name)
	if err != nil {
		return account, err
	}
	me.accountmap[account.Name] = account
	return account, nil
}

// Removes an account from this world by name.
func (me *World) RemoveAccount(name string) {
	_, have := me.accountmap[name]
	if !have {
		return
	}
	delete(me.accountmap, name)
}

// Default world pointer
var DefaultWorld *World

// Returns an item that has already been loaded or nil if not found
func (me *World) GetItem(id string) (item *Item) {
	item, ok := me.itemmap[id]
	if !ok {
		return nil
	}
	return item
}

// Loads an item to be used with this world.
// If the item was already loaded, returns that in stead.
func (me *World) LoadItem(id string) (item *Item, err error) {
	item = me.GetItem(id)

	if item != nil {
		return item, nil
	}

	item, err = LoadItem(me.dirname, id)
	if err != nil {
		return item, err
	}
	me.itemmap[item.ID] = item
	return item, nil
}

// Removes an item from this world by ID.
func (me *World) RemoveItem(id string) {
	_, have := me.itemmap[id]
	if !have {
		return
	}
	delete(me.itemmap, id)
}

// Returns a Room that has already been loaded or nil if not found
func (me *World) GetRoom(id string) (room *Room) {
	room, ok := me.roommap[id]
	if !ok {
		return nil
	}
	return room
}

// Loads a Room to be used with this world.
// If the room was already loaded, returns that in stead.
func (me *World) LoadRoom(id string) (room *Room, err error) {
	room = me.GetRoom(id)

	if room != nil {
		return room, nil
	}

	room, err = LoadRoom(me.dirname, id)
	if err != nil {
		return room, err
	}
	me.roommap[room.ID] = room
	return room, nil
}

// Removes an item from this world by ID.
func (me *World) RemoveRoom(id string) {
	_, have := me.roommap[id]
	if !have {
		return
	}
	delete(me.roommap, id)
}