#!/usr/bin/python3

import time
import os
import json
import logging
from flask import url_for
from .util import live_server_setup
from urllib.parse import urlparse, parse_qs

def test_consistent_history(client, live_server):
    live_server_setup(live_server)

    r = range(1, 50)

    for one in r:
        test_url = url_for('test_endpoint', content_type="text/html", content=str(one), _external=True)
        res = client.post(
            url_for("import_page"),
            data={"urls": test_url},
            follow_redirects=True
        )

        assert b"1 Imported" in res.data

    time.sleep(3)
    while True:
        res = client.get(url_for("index"))
        logging.debug("Waiting for 'Checking now' to go away..")
        if b'Checking now' not in res.data:
            break
        time.sleep(0.5)

    time.sleep(3)
    # Essentially just triggers the DB write/update
    res = client.post(
        url_for("settings_page"),
        data={"application-empty_pages_are_a_change": "",
              "requests-time_between_check-minutes": 180,
              'application-fetch_backend': "html_requests"},
        follow_redirects=True
    )
    assert b"Settings updated." in res.data

    # Give it time to write it out
    time.sleep(3)
    json_db_file = os.path.join(live_server.app.config['DATASTORE'].datastore_path, 'url-watches.json')

    json_obj = None
    with open(json_db_file, 'r') as f:
        json_obj = json.load(f)

    # assert the right amount of watches was found in the JSON
    assert len(json_obj['watching']) == len(r), "Correct number of watches was found in the JSON"

    # each one should have a history.txt containing just one line
    for w in json_obj['watching'].keys():
        history_txt_index_file = os.path.join(live_server.app.config['DATASTORE'].datastore_path, w, 'history.txt')
        assert os.path.isfile(history_txt_index_file), "History.txt should exist where I expect it - {}".format(history_txt_index_file)

        # Same like in model.Watch
        with open(history_txt_index_file, "r") as f:
            tmp_history = dict(i.strip().split(',', 2) for i in f.readlines())
            assert len(tmp_history) == 1, "History.txt should contain 1 line"

        # Should be two files,. the history.txt , and the snapshot.txt
        files_in_watch_dir = os.listdir(os.path.join(live_server.app.config['DATASTORE'].datastore_path,
                                                     w))
        # Find the snapshot one
        for fname in files_in_watch_dir:
            if fname != 'history.txt':
                # contents should match what we requested as content returned from the test url
                with open(os.path.join(live_server.app.config['DATASTORE'].datastore_path, w, fname), 'r') as snapshot_f:
                    contents = snapshot_f.read()
                    watch_url = json_obj['watching'][w]['url']
                    u = urlparse(watch_url)
                    q = parse_qs(u[4])
                    assert q['content'][0] == contents.strip(), "Snapshot file {} should contain {}".format(fname, q['content'][0])



        assert len(files_in_watch_dir) == 2, "Should be just two files in the dir, history.txt and the snapshot"