package main

import (
	"encoding/json"
	"flag"
	"fmt"
	"io/ioutil"
	"log"
	"os"
	"strings"
	"time"

	"git.wecise.com/wecise/odbserver/odb"
	"gitee.com/wecisecode/util/logger"
)

func main() {
	log.SetFlags(log.LstdFlags | log.Lshortfile)
	var keyspace = flag.String("k", "matrix", "Keyspace")
	var filePath = flag.String("f", "", "Recover file")
	flag.Parse()

	logger.SetConsole(false)

	g, err := odb.New(&odb.Option{Cache: odb.CacheAll, Keyspace: *keyspace})
	if err != nil {
		log.Fatal("New odb error:", err)
	}

	var (
		mql        string
		oldTagDirs []map[string]interface{}
	)
	if *filePath == "" {
		mql = `select creater, domain, name, tags from /matrix/tagdir limit -1`
		oldTagDirs, _, err = g.Query(mql)
		if err != nil {
			log.Fatal("Get old tagdir error:", err)
		}

		// Export old tagdir
		b, err := json.MarshalIndent(oldTagDirs, "", "  ")
		if err != nil {
			log.Fatal(err)
		}
		file, err := os.OpenFile("old_tagdir.json", os.O_CREATE|os.O_TRUNC|os.O_RDWR, os.ModePerm)
		if err != nil {
			log.Fatal("Create old_tagdir file error:", err)
		}
		if _, err = file.Write(b); err != nil {
			log.Fatal(err)
		}

		if _, _, err = g.Query(`delete from /matrix/tagdir with version`); err != nil {
			log.Fatal(err)
		}
		time.Sleep(time.Second)
		fmt.Println("Drop old tagdir class.")
		mql = `delete from /matrix/tagdir with version`
		if _, _, err = g.Query(mql); err != nil {
			log.Fatal(err)
		}
		time.Sleep(time.Second)
		mql = `drop class /matrix/tagdir`
		if _, _, err = g.Query(mql); err != nil {
			log.Fatal(err)
		}
		time.Sleep(time.Second)
	} else {
		b, err := ioutil.ReadFile(*filePath)
		if err != nil {
			log.Fatal(err)
		}
		if err = json.Unmarshal(b, &oldTagDirs); err != nil {
			log.Fatal(err)
		}
	}

	fmt.Println("Create new tagdir class.")
	mql = `create class if not exists /matrix/tagdir(
	creater		varchar          '创建者',
	domain		varchar          '目录所属域',
	name		varchar	         '标签名称',
    parent      varchar          '父级目录，/分割的路径',
    path        varchar          '标签全名，/分割的路径',
	keys(creater, domain, name),
	indexes(creater, domain, name, parent, path)
)`
	if _, _, err = g.Query(mql); err != nil {
		log.Fatal(err)
	}
	time.Sleep(time.Second)

	mql = `select name from /matrix/tagdir where creater = ? and domain = ? and name = ?`
	selectPs, err := g.Prepare(mql)
	if err != nil {
		log.Fatal(err)
	}
	mql = `insert into /matrix/tagdir (creater, domain, name, parent, path, tags) values (?, ?, ?, ?, ?, ?)`
	insertPs, err := g.Prepare(mql)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println("Insert new tagdir data.")
	for _, ot := range oldTagDirs {
		creater := ot["creater"].(string)
		domain := ot["domain"].(string)
		a := strings.Split(ot["name"].(string), "/")
		var parent string
		for _, tag := range a {
			res, _, err := selectPs.Exec(creater, domain, tag)
			if err != nil {
				log.Fatal(err)
			}
			if len(res) == 0 {
				var path string
				if parent != "" {
					path = parent + "/" + tag
				} else {
					path = tag
				}
				if _, _, err = insertPs.Exec(creater, domain, tag, parent, path, strings.Split(path, "/")); err != nil {
					log.Fatal(err)
				}
				fmt.Printf("Insert creater: %s, domain: %s, tag: %s, parent: %s, path: %s, tags: %v \n", creater, domain, tag, parent, path, strings.Split(path, "/"))
			}
			if parent == "" {
				parent = tag
			} else {
				parent += "/" + tag
			}
		}
	}
}