package dmmo

import (
	"encoding/json"
	"os"
)

type Index struct {
	Tiles []*Tile `json:"tiles"`
}

func NewIndex() *Index {
	return &Index{
		Tiles: []*Tile{},
	}
}

func (i *Index) Save(filename string) error {
	b, err := json.Marshal(i.Tiles)
	if err != nil {
		return err
	}
	err = os.WriteFile(filename+".json", b, os.ModePerm)
	return err
}

func LoadIndex(filename string) (*Index, error) {
	pay, err := os.ReadFile(filename + ".json")
	if err != nil {
		return nil, err
	}
	var idx *Index = &Index{
		Tiles: []*Tile{},
	}
	err = json.Unmarshal(pay, &idx.Tiles)
	return idx, err
}

func (i *Index) Has(name string) bool {
	for _, t := range i.Tiles {
		if t != nil && t.Name == name {
			return true
		}
	}
	return false
}

func (i *Index) Get(name string) *Tile {
	for _, t := range i.Tiles {
		if t != nil && t.Name == name {
			return t
		}
	}
	return nil
}

func (i *Index) Id(name string) (uint64, bool) {
	for id, t := range i.Tiles {
		if t != nil && t.Name == name {
			return uint64(id), true
		}
	}
	return 0, false
}

func (i *Index) Set(name, symbol, color string, auto ...bool) {
	if i.Has(name) {
		for id, t := range i.Tiles {
			if t != nil && t.Name == name {
				i.Tiles[id].Symbol = symbol
				i.Tiles[id].Color = color
				if len(auto) != 0 {
					i.Tiles[id].AutoLight = auto[0]
				}
				break
			}
		}
	} else {
		if len(auto) == 0 {
			i.Tiles = append(i.Tiles, NewTile(name, symbol, color, true))
		} else {
			i.Tiles = append(i.Tiles, NewTile(name, symbol, color, auto[0]))
		}
	}
}

func (i *Index) HasId(id uint64) bool {
	return len(i.Tiles) < int(id) || id > 0
}

func (i *Index) GetId(id uint64) *Tile {
	idy := int(id)
	for idx, t := range i.Tiles {
		if idx == idy {
			return t
		}
	}
	return nil
}

func (i *Index) SetId(id uint64, name, symbol, color string, auto ...bool) {
	if i.HasId(id) {
		i.Tiles[id].Name = name
		i.Tiles[id].Symbol = symbol
		i.Tiles[id].Color = color
		if len(auto) != 0 {
			i.Tiles[id].AutoLight = auto[0]
		}
	} else {
		if len(auto) == 0 {
			i.Tiles = append(i.Tiles, NewTile(name, symbol, color, true))
		} else {
			i.Tiles = append(i.Tiles, NewTile(name, symbol, color, auto[0]))
		}
	}
}