package data

import (
	"fmt"
	"os"
	"reflect"
	"strings"
)

type tableLoader interface {
	load(buf []byte) error
}

type Tables struct {
	Copy         CopyTable
	CopyMain     CopyMainTable
	Equip        EquipTable
	EquipLevel   EquipLevelTable
	EquipSet     EquipSetTable
	Hero         HeroTable
	HeroBond     HeroBondTable
	HeroBook     HeroBookTable
	HeroBreak    HeroBreakTable
	HeroLevel    HeroLevelTable
	FunctionOpen FunctionOpenTable
	Item         ItemTable
	Monster      MonsterTable
	Scene        SceneTable
	ServerConfig ServerConfigTable
	Treasure     TreasureTable
}

func NewTables(dataDir string) (*Tables, error) {
	var tables = new(Tables)
	var tt = reflect.TypeOf(tables).Elem()
	var tv = reflect.ValueOf(tables).Elem()

	var fn = tt.NumField()
	for i := range fn {
		var sf = tt.Field(i)
		var ft = sf.Type
		var name = ft.Name()
		if strings.HasSuffix(name, "Table") {
			name = strings.TrimSuffix(name, "Table")
		}

		var fv = tv.Field(i)

		loader, ok := fv.Addr().Interface().(tableLoader)
		if !ok {
			continue
		}

		buf, err := os.ReadFile(fmt.Sprintf("%s/tb%s.json", dataDir, strings.ToLower(name)))
		if err != nil {
			return nil, err
		}

		err = loader.load(buf)
		if err != nil {
			return nil, err
		}
	}

	return tables, nil
}