#!/usr/bin/env python
from __future__ import print_function

import logging
from dateutil.parser import parse as parse_date

from elasticsearch import Elasticsearch


def print_search_stats(results):
    print("=" * 80)
    print(
        "Total %d found in %dms" % (results["hits"]["total"]["value"], results["took"])
    )
    print("-" * 80)


def print_hits(results):
    " Simple utility function to print results of a search query. "
    print_search_stats(results)
    for hit in results["hits"]["hits"]:
        # get created date for a repo and fallback to authored_date for a commit
        created_at = parse_date(
            hit["_source"].get("created_at", hit["_source"]["authored_date"])
        )
        print(
            "/%s/%s/%s (%s): %s"
            % (
                hit["_index"],
                hit["_type"],
                hit["_id"],
                created_at.strftime("%Y-%m-%d"),
                hit["_source"]["description"].split("\n")[0],
            )
        )

    print("=" * 80)
    print()


# get trace logger and set level
tracer = logging.getLogger("elasticsearch.trace")
tracer.setLevel(logging.INFO)
tracer.addHandler(logging.FileHandler("/tmp/es_trace.log"))
# instantiate es client, connects to localhost:9200 by default
es = Elasticsearch()

print("Empty search:")
print_hits(es.search(index="git"))

print('Find commits that says "fix" without touching tests:')
result = es.search(
    index="git",
    body={
        "query": {
            "bool": {
                "must": {"match": {"description": "fix"}},
                "must_not": {"term": {"files": "test_elasticsearch"}},
            }
        }
    },
)
print_hits(result)

print("Last 8 Commits for elasticsearch-py:")
result = es.search(
    index="git",
    body={
        "query": {"term": {"repository": "elasticsearch-py"}},
        "sort": [{"committed_date": {"order": "desc"}}],
        "size": 8,
    },
)
print_hits(result)

print("Stats for top 10 committers:")
result = es.search(
    index="git",
    body={
        "size": 0,
        "aggs": {
            "committers": {
                "terms": {"field": "committer.name.keyword"},
                "aggs": {"line_stats": {"stats": {"field": "stats.lines"}}},
            }
        },
    },
)

print_search_stats(result)
for committer in result["aggregations"]["committers"]["buckets"]:
    print(
        "%15s: %3d commits changing %6d lines"
        % (committer["key"], committer["doc_count"], committer["line_stats"]["sum"])
    )
print("=" * 80)