#!/usr/bin/python
from backup import hashify
import argparse
import os
import shutil
import sqlite3
import time
import time

def create_temp():
    name= 'fsb{}'.format(hex(time.time_ns())[2:])
    os.mkdir(name)
    return name

def lookup(cur,imohash,realhash=None):
    if realhash is not None:
        cur.execute('SELECT path FROM paths where blake=?',[realhash])
    else:
        cur.execute('SELECT path FROM paths where imohash=?',[imohash])
    res = cur.fetchall()
    return res

def restore(database,source,destination):
    con=sqlite3.connect(database)
    cur=con.cursor()
    temp = create_temp()
    hashes = hashify(source)
    for path,imohash,realhash in hashes:
        ppath = os.path.join(source,path)
        qpath=lookup(cur,imohash,realhash)
        qpath=os.path.join(temp,qpath)
        parent = os.path.dirname(qpath)
        if not os.path.exists(parent):
            os.makedirs(parent)
        print(ppath,qpath,sep = '->')
        os.rename(ppath,qpath)
    os.rename(temp,destination)

if __name__ == "__main__":
    parser = argparse.ArgumentParser()
    parser.add_argument('database')
    parser.add_argument('src')
    parser.add_argument('dst',default = None,nargs='?')
    args = parser.parse_args()
    if args.dst is None:
        args.dst=args.src
    restore(args.database,args.src,args.dst)