import requests
import logging
from django.core.cache import cache

logger = logging.getLogger(__name__)


# TODO: implement caching decorator, cache get_* functions
def get_json(url):
    if cache.get(url) is None:
        try:
            response = requests.get(url)
            json = response.json()
            cache.set(url, json, 180)  # cache result for 180 seconds
            return response.json()
        except requests.exceptions.RequestException as e:
            logger.exception(e)
        except ValueError as e:
            logger.exception(e)
    else:
        return cache.get(url)


def get_all_slaves():
    url = "https://build.opnfv.org/ci/computer/api/json?tree=computer[displayName,offline,idle]"
    json = get_json(url)
    if json is not None:
        return json['computer']  # return list of dictionaries
    return []


def get_slave(slavename):
    slaves = get_all_slaves()
    for slave in slaves:
        if slave['displayName'] == slavename:
            return slave
    return {}


def get_ci_slaves():
    url = "https://build.opnfv.org/ci/label/ci-pod/api/json?tree=nodes[nodeName,offline,idle]"
    json = get_json(url)
    if json is not None:
        return json['nodes']
    return []


def get_all_jobs():
    url = "https://build.opnfv.org/ci/api/json?tree=jobs[displayName,url,lastBuild[fullDisplayName,building,builtOn,timestamp,result]]"
    json = get_json(url)
    if json is not None:
        return json['jobs']  # return list of dictionaries
    return []


def get_jenkins_job(slavename):
    jobs = get_all_jobs()
    max_time = 0
    last_job = None
    for job in jobs:
        if job['lastBuild'] is not None:
            if job['lastBuild']['builtOn'] == slavename:
                if job['lastBuild']['building'] is True:
                    return job  # return active build
                if job['lastBuild']['timestamp'] > max_time:
                    last_job = job
                    max_time = job['lastBuild']['timestamp']
    return last_job


def is_ci_slave(slavename):
    ci_slaves = get_ci_slaves()
    for ci_slave in ci_slaves:
        if ci_slave['nodeName'] == slavename:
            return True
    return False


def is_dev_pod(slavename):
    if is_ci_slave(slavename):
        return False
    if slavename.find('pod') != -1:
        return True
    return False