#!/usr/bin/env python3
#
# Todo:
#
# - Remove all json files from previous runs
import json
import logging
import os
import pystache
import requests
import sys


URL='https://moose.leap.se:9200'


def _get_logger():
    logger = logging.getLogger(__name__)
    ch = logging.StreamHandler()
    ch.setFormatter(logging.Formatter('%(asctime)s %(message)s'))
    logger.addHandler(ch)
    logger.setLevel(logging.INFO)
    return logger


def _delete_jsons(directory):
    logger.info('removing *.json from %s' % directory)
    for f in os.listdir(directory):
        if f.endswith('.json'):
            os.unlink(os.path.join(directory, f))


def generate_visualizations(tests):
    with open(os.path.join('templates', 'visualization.mustache'), 'r') as f:
        template = f.read()
    with open(os.path.join('templates', 'visualization-visState.mustache')) as f:
        template_visState = f.read()
    with open(os.path.join('templates', 'visualization-searchSourceJSON.mustache')) as f:
        template_searchSourceJSON = f.read()

    out_dir = './visualization'
    _delete_jsons(out_dir)

    # remove all json files in output directory
    for f in os.listdir(out_dir):
        if f.endswith('.json'):
            os.unlink(os.path.join(out_dir, f))

    for test_name in tests:
        out_file = os.path.join(out_dir, test_name + '.json')
        logger.info('Generating ' + out_file)

        context = {
           'title': test_name,
           'query': "commit_info.project:soledad "
                    "AND commit_info.branch='master' "
                    "AND machine_info.host='weasel' "
                    "AND name='" + test_name + "'"
        }

        visState = pystache.render(template_visState, context)
        assert json.loads(visState)
        context['visState'] = json.dumps(visState)

        searchSourceJSON = pystache.render(template_searchSourceJSON, context)
        assert json.loads(searchSourceJSON)
        context['searchSourceJSON'] = json.dumps(searchSourceJSON)

        rendered = pystache.render(template, context)
        assert json.loads(rendered)

        with open(out_file, 'w') as out:
            out.write(rendered)


def generate_dashboards(tests):
    with open(os.path.join('templates', 'dashboard.mustache'), 'r') as f:
        template = f.read()

    out_dir = './dashboard'
    _delete_jsons(out_dir)

    out_file = os.path.join(out_dir, 'soledad-benchmarks.json')
    logger.info('Generating ' + out_file)

    panels = []
    count = 0
    for test_name in tests:
        count += 1
        panels.append({
            'id': test_name,
            'panelIndex': count,
            'col': 1,
            'row': count,
            'size_x': 6,
            'size_y': 3,
            'type': 'visualization',
        })

    context = {'panels_json': json.dumps(json.dumps(panels))}
    rendered = pystache.render(template, context)
    assert json.loads(rendered), rendered

    with open(out_file, 'w') as f:
        f.write(rendered)


def _get_test_names():
    with open('./query/test_names.json') as f:
        response = requests.get(URL + '/_search', data=f)
        buckets = response.json()['aggregations']['test_names']['buckets']
    tests = []
    for d in buckets:
        name = d['key']
        tests.append(name)
    return sorted(tests)


if __name__ == '__main__':
    logger = _get_logger()
    tests = _get_test_names()
    generate_dashboards(tests)
    generate_visualizations(tests)