package ledis

import (
	"fmt"
	"github.com/siddontang/copier"
	"github.com/siddontang/ledisdb/store"
	"path"
	"strings"
)

type Config struct {
	DataDir string `json:"data_dir"`

	DB struct {
		Name            string `json:"name"`
		Compression     bool   `json:"compression"`
		BlockSize       int    `json:"block_size"`
		WriteBufferSize int    `json:"write_buffer_size"`
		CacheSize       int    `json:"cache_size"`
		MaxOpenFiles    int    `json:"max_open_files"`
		MapSize         int    `json:"map_size"`
	} `json:"db"`

	BinLog struct {
		Use         bool `json:"use"`
		MaxFileSize int  `json:"max_file_size"`
		MaxFileNum  int  `json:"max_file_num"`
	} `json:"binlog"`
}

func (cfg *Config) NewDBConfig() *store.Config {
	if len(cfg.DB.Name) == 0 {
		fmt.Printf("no store set, use default %s\n", store.DefaultStoreName)
		cfg.DB.Name = store.DefaultStoreName
	}

	cfg.DB.Name = strings.ToLower(cfg.DB.Name)

	dbCfg := new(store.Config)
	copier.Copy(dbCfg, &cfg.DB)

	dbPath := path.Join(cfg.DataDir, fmt.Sprintf("%s_data", cfg.DB.Name))

	dbCfg.Path = dbPath
	return dbCfg
}

func (cfg *Config) NewBinLogConfig() *BinLogConfig {
	binLogPath := path.Join(cfg.DataDir, "bin_log")
	c := new(BinLogConfig)
	copier.Copy(c, &cfg.BinLog)
	c.Path = binLogPath
	return c
}