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#!/usr/bin/env python3
"""nexus_latest_snap.py: Locate the most recent snapshot in Nexus"""

import sys
import xml.etree.ElementTree as tree

import requests

ARTIFACT = sys.argv[1]
HINT = sys.argv[2]
BASE_URL = 'http://nexus:8080'


def main():
    """Blah"""

    # Pull Lucene search results
    root = tree.fromstring(requests.get(
        BASE_URL + '/service/local/lucene/search?p=jar&a=' + ARTIFACT +
        '&g=com.*' + HINT + '*').text)

    # Translate the group ID into a path
    group_id_path = root.find(
        "./data/artifact/[artifactId='"+ARTIFACT +
        "']/groupId").text.replace('.', '/')

    # Pull more info about the repo
    latest_snap = root.find(
        "./data/artifact/[artifactId='"+ARTIFACT +
        "']/latestSnapshot").text
    snap_repo = root.find(
        "./data/artifact/[artifactId='" + ARTIFACT +
        "']/latestSnapshotRepositoryId").text

    # Set the path to the maven-metadata.xml
    repo_meta = BASE_URL + '/service/local/repositories/' + \
        snap_repo + '/content/' + group_id_path + '/' + \
        ARTIFACT + '/' + latest_snap + '/maven-metadata.xml'

    # Pull the repo metadata and parse the XML
    repo_root = tree.fromstring(requests.get(repo_meta).text)

    # Pull out the lastUpdated value
    most_recent = repo_root.find('./versioning/lastUpdated').text

    # Pull the jar name that matches the most recent change
    jar_ext = repo_root.find(
        ".//snapshotVersion/[extension='jar'][classifier][updated='" +
        most_recent + "']/value").text

    # Generate and print the final jar URL
    url = BASE_URL + '/service/local/repositories/' + snap_repo + \
        '/content' + '/'+group_id_path + '/'+ARTIFACT + '/' + \
        latest_snap + '/' + ARTIFACT + '-' + jar_ext + '.jar'
    print(url)

if __name__ == '__main__':
    main()