package data

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

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

type Tables struct {
	Equip        EquipTable
	EquipLevel   EquipLevelTable
	EquipSet     EquipSetTable
	Hero         HeroTable
	HeroBond     HeroBondTable
	HeroBreak    HeroBreakTable
	HeroLevel    HeroLevelTable
	HeroGeneral  HeroGeneralTable
	Item         ItemTable
	ServerConfig ServerConfigTable
}

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
}