#!/usr/bin/env python
# -*- coding: utf-8 -*-
from __future__ import division, print_function

import sys
import pickle
import os
from os.path import abspath, dirname, split, exists

# Add parent directory to beginning of path variable
sys.path = [split(dirname(abspath(__file__)))[0]] + sys.path

import jobmanager.persistentData as pd
from jobmanager.persistentData import PersistentDataStructure as PDS

VERBOSE = 1

if sys.version_info[0] == 2:
    # fixes keyword problems with python 2.x
    old_open = open
    def new_open(file, mode):
        old_open(name = file, mode = mode)
    open = new_open
    

def test_pd():
    try:
        with PDS(name='test_data', verbose=VERBOSE) as data:
            key = 'a'
            value = 1
            data.setData(key=key, value=value)
            assert data.getData(key) == value
            
            
            key_sub = 'zz'
            with data.getData(key_sub, create_sub_data=True) as sub_data:
                sub_data.setData(key=key, value=3)
                assert sub_data.getData(key) == 3
                assert data.getData(key) == 1
                
    
                with sub_data.getData(key_sub, create_sub_data=True) as sub_sub_data:
                    sub_sub_data.setData(key=key, value=4)
                    assert sub_sub_data.getData(key) == 4
                    assert sub_data.getData(key) == 3
                    assert data.getData(key) == 1
                    
                with sub_data.getData(key_sub, create_sub_data=True) as sub_sub_data:
                    assert sub_sub_data.getData(key) == 4
                    assert sub_data.getData(key) == 3
                    assert data.getData(key) == 1
    
            data._consistency_check()
    finally:
        data.erase()
    
def test_reserved_key_catch():
    try:
        with PDS(name='data', verbose=VERBOSE) as data:
            # TRY TO READ RESERVED KEYS
            try:
                a = data[pd.KEY_COUNTER]
            except RuntimeError:
                pass
            else:
                assert False
                
            try:
                b = data[pd.KEY_SUB_DATA_KEYS]
            except RuntimeError:
                pass
            else:
                assert False
            
            # TRY TO SET RESERVED KEYS
            try:
                data[pd.KEY_COUNTER] = 4
            except RuntimeError:
                pass
            else:
                assert False
                
            try:
                data[pd.KEY_SUB_DATA_KEYS] = 4
            except RuntimeError:
                pass
            else:
                assert False
    
            # TRY TO REMOVE RESERVED KEYS
            try:
                del data[pd.KEY_COUNTER]
            except RuntimeError:
                pass
            else:
                assert False
            
            try:
                del data[pd.KEY_SUB_DATA_KEYS]
            except RuntimeError:
                pass
            else:
                assert False            
    finally:
        data.erase()
                
def test_pd_bytes():
    t1 = (3.4, 4.5, 5.6, 6.7, 7.8, 8.9)
    t2 = (3.4, 4.5, 5.6, 6.7, 7.8, 8.9, 9,1)
    
    b1 = pickle.dumps(t1)
    b2 = pickle.dumps(t2)
    
    try:
        with PDS(name='base', verbose=VERBOSE) as base_data:
            with base_data.getData(key=b1, create_sub_data=True) as sub_data:
                for i in range(2, 10):
                    sub_data[i] = t2
                    
            base_data[b2] = t1
            
        if VERBOSE > 1:
            print("\nCHECK\n")
            
        with PDS(name='base', verbose=VERBOSE) as base_data:
            with base_data.getData(key=b1) as sub_data:
                for i in range(2, 10):
                    assert sub_data[i] == t2
            
            assert base_data[b2] == t1
            
            base_data._consistency_check()
    finally:
        base_data.erase()

def test_directory_removal():
    try:
        with PDS(name='data', verbose=VERBOSE) as data:
            with data.newSubData('s1') as s1:
                s1['bla'] = 9
                
            f = open(file=data._dirname + '/other_file', mode='w')
            f.close()
            
            print("now there should be a warning, because there is an unknown file in the directory!")
    finally:
        data.erase()
        
    assert exists(data._dirname)
    os.remove(data._dirname + '/other_file')
    os.rmdir(data._dirname)
    
def test_mp_read_from_sqlite():
    import sqlitedict as sqd
    import multiprocessing as mp
    import time
    
    d = sqd.SqliteDict('test.db', autocommit = True)
    
    def write(arg):
        with sqd.SqliteDict('test.db', autocommit = True) as d:
            for i in range(100):
                d[i] = (i, arg)
    
    def read():
        with sqd.SqliteDict('test.db', autocommit = True) as d:
            for i in range(len(d)):
                print(i, d[i])
            
    p1 = mp.Process(target = write, args=('p1', ))
    time.sleep(0.1)
    p2 = mp.Process(target = read)
    
    p1.start()
    p2.start()
    
    p1.join(10)
    p2.join(10)
    
    try:
        if p1.is_alive():
            raise RuntimeError("write process did not finish on time")
        if p2.is_alive():
            raise RuntimeError("read process did not finish on time")
    finally:    
        p1.terminate()
        p2.terminate()
        d.terminate()
    
    
def test_from_existing_sub_data():
    t1 = (3.4, 4.5, 5.6, 6.7, 7.8, 8.9)
    t2 = (3.4, 4.5, 5.6, 6.7, 7.8, 8.9, 9,1)
    
    try:
        with PDS(name='base', verbose=VERBOSE) as base_data:
            with base_data.getData(key='sub1', create_sub_data = True) as sub_data:
                sub_data[100] = t1
                sub_data[200] = t2
                with sub_data.getData(key = 'subsub1', create_sub_data = True) as sub_sub_data:
                    sub_sub_data['t'] = 'hallo Welt'
                    
            base_data.setDataFromSubData(key='sub2', subData = sub_data)
    
            
        with PDS(name='base', verbose=VERBOSE) as base_data:
            with base_data.getData(key='sub2', create_sub_data = False) as sub_data:
                assert sub_data[100] == t1
                assert sub_data[200] == t2
                with sub_data.getData(key = 'subsub1', create_sub_data = False) as sub_sub_data:
                    assert sub_sub_data['t'] == 'hallo Welt'
                    
    
        with PDS(name='base', verbose=VERBOSE) as base_data:
            with base_data.getData(key='sub1', create_sub_data = True) as sub_data:
                base_data['sub2'] = sub_data
                
        with PDS(name='base', verbose=VERBOSE) as base_data:
            with base_data.getData(key='sub2', create_sub_data = False) as sub_data:
                assert sub_data[100] == t1
                assert sub_data[200] == t2
                with sub_data.getData(key = 'subsub1', create_sub_data = False) as sub_sub_data:
                    assert sub_sub_data['t'] == 'hallo Welt'
                    sub_sub_data['t'] = 'sub2:hallo Welt'
                
                sub_data[100] = "sub2:t1"  
                sub_data[200] = "sub2:t2"
                
        with PDS(name='base', verbose=VERBOSE) as base_data:
            with base_data.getData(key='sub1', create_sub_data = True) as sub_data:
                assert sub_data[100] == t1
                assert sub_data[200] == t2
                with sub_data.getData(key = 'subsub1', create_sub_data = True) as sub_sub_data:
                    assert sub_sub_data['t'] == 'hallo Welt'
    
        with PDS(name='base', verbose=VERBOSE) as base_data:
            with base_data.getData(key='sub2', create_sub_data = False) as sub_data:
                with sub_data.getData(key = 'subsub1', create_sub_data = False) as sub_sub_data:
                    assert sub_sub_data['t'] == 'sub2:hallo Welt'
                
                assert sub_data[100] == "sub2:t1"  
                assert sub_data[200] == "sub2:t2"                
    
            base_data._consistency_check()
    finally:
        base_data.erase()
    
def test_remove_sub_data_and_check_len():
    try:
        with PDS(name='base', verbose=VERBOSE) as base_data:
            with base_data.getData(key='sub1', create_sub_data = True) as sub_data:
                sub_data[100] = 't1'
                sub_data[200] = 't2'
                with sub_data.getData(key = 'subsub1', create_sub_data = True) as sub_sub_data:
                    sub_sub_data['t'] = 'hallo Welt'
                    
                assert len(sub_data) == 3
            
    
    
            assert len(base_data) == 1
            base_data['copy_of_sub1'] = sub_data
            assert len(base_data) == 2
            del base_data['sub1']
            assert len(base_data) == 1
            
            with base_data.getData(key='copy_of_sub1', create_sub_data = True) as sub_data:
                assert len(sub_data) == 3
                assert sub_data[100] == 't1'
                assert sub_data[200] == 't2'
                with sub_data.getData(key = 'subsub1', create_sub_data = True) as sub_sub_data:
                    assert sub_sub_data['t'] == 'hallo Welt'
                
            
            assert ('sub1' not in base_data)
            base_data._consistency_check()
    finally:
        base_data.erase()
    
def test_show_stat():
    try:
        with PDS(name='test_data', verbose=VERBOSE) as data:
            key = 'a'
            value = 1
            data.setData(key=key, value=value)
            assert data.getData(key) == value
            
            
            key_sub = 'zz'
            with data.getData(key_sub, create_sub_data=True) as sub_data:
                sub_data.setData(key=key, value=3)
                assert sub_data.getData(key) == 3
                assert data.getData(key) == 1
                
                
                key_sub_bin = pickle.dumps(key_sub, protocol=2)
                with sub_data.getData(key_sub_bin, create_sub_data=True) as sub_sub_data:
                    sub_sub_data.setData(key=key, value=4)
                    assert sub_sub_data.getData(key) == 4
                    assert sub_data.getData(key) == 3
                    assert data.getData(key) == 1
                    
                with sub_data.getData(key_sub_bin, create_sub_data=True) as sub_sub_data:
                    assert sub_sub_data.getData(key) == 4
                    assert sub_data.getData(key) == 3
                    assert data.getData(key) == 1
    
            data._consistency_check()
            
            data.show_stat(recursive=True)
    finally:
        data.erase()

def slow_len(pd):
    n = 0
    for k in pd:
        n += 1
    return n
    
def test_len():
    try:
        with PDS(name='data', verbose=VERBOSE) as data:
            assert len(data) == 0
            assert slow_len(data) == 0
            
            data['a'] = 1
            assert len(data) == 1
            assert slow_len(data) == 1
            
            for i in range(1, 8):
                data[i*10] = i
            assert len(data) == 8
            assert slow_len(data) == 8
            
        with PDS(name='data', verbose=VERBOSE) as data:
            assert len(data) == 8
            assert slow_len(data) == 8
            
            data.clear()
            assert len(data) == 0
            assert slow_len(data) == 0
            
        with PDS(name='data', verbose=VERBOSE) as data:
            assert len(data) == 0
            assert slow_len(data) == 0
    finally:
        data.erase()
        
    
    
def test_clear():
    try:
        with PDS(name='data', verbose=VERBOSE) as data:
            data['a'] = 1
            data['b'] = 2
            with data.newSubData('s1') as s1:
                s1['bla'] = 9
            with data.newSubData('s2') as s2:
                s2['bla2'] = 18
            
            with data['s1'] as s1:
                s1['t'] = 'tmp'
                s1.clear()
            
            with data['s1'] as s1:
                assert len(s1) == 0
                assert slow_len(s1) == 0
            
            data.clear()
            
            dir_content = os.listdir(data._dirname)
            assert len(dir_content) == 1
            assert dir_content[0] == 'data.db'
    finally:
        data.erase()

def test_not_in():
    try:
        with PDS(name='data', verbose=VERBOSE) as data:
            data['a'] = 1
            data['b'] = 2
            with data.newSubData('s1') as s1:
                s1['bla'] = 9
                
            assert ('a' in data)
            assert ('b' in data)
            assert ('s1' in data)
            
            assert ('c' not in data)
                
    finally:
        data.erase()
        
      
if __name__ == "__main__":
#     test_reserved_key_catch()
#     test_pd()
#     test_pd_bytes()
#     test_directory_removal()
#     test_mp_read_from_sqlite()
#     test_dict_dump()
#     test_from_existing_sub_data()
#     test_remove_sub_data_and_check_len()
#     test_show_stat()
#     test_len()
#     test_clear()
    test_not_in()