from buildbot.plugins import *
from buildbot_common.build_helpers import *
import os

__all__ = [ "configure", "E" ]

class E():
    PROJECT       = "cryptoportfolio"
    BUILDBOT_URL  = "https://git.immae.eu/buildbot/{}/".format(PROJECT)
    SOCKET        = "unix:/run/buildbot/{}.sock".format(PROJECT)
    PB_SOCKET     = "unix:address=/run/buildbot/{}_pb.sock".format(PROJECT)
    RELEASE_PATH  = "/var/lib/ftp/release.immae.eu/{}".format(PROJECT)
    RELEASE_URL   = "https://release.immae.eu/{}".format(PROJECT)
    GIT_URL       = "https://git.immae.eu/perso/Immae/Projets/Cryptomonnaies/Cryptoportfolio/{0}.git"
    SSH_KEY_PATH  = "/var/lib/buildbot/buildbot_key"
    LDAP_HOST     = "ldap.immae.eu"
    LDAP_DN       = "cn=buildbot,ou=services,dc=immae,dc=eu"
    LDAP_ROLES_BASE = "ou=roles,ou=hosts,dc=immae,dc=eu"

    PUPPET_HOST = {
            "production": "root@cryptoportfolio.immae.eu",
            "integration": "root@cryptoportfolio-dev.immae.eu"
            }

    # master.cfg
    SECRETS_FILE       = os.getcwd() + "/secrets"
    LDAP_URL           = "ldaps://ldap.immae.eu:636"
    LDAP_ADMIN_USER    = "cn=buildbot,ou=services,dc=immae,dc=eu"
    LDAP_BASE          = "dc=immae,dc=eu"
    LDAP_PATTERN       = "(uid=%(username)s)"
    LDAP_GROUP_PATTERN = "(&(memberOf=cn=groups,ou=cryptoportfolio,cn=buildbot,ou=services,dc=immae,dc=eu)(member=%(dn)s))"
    TITLE_URL          = "https://git.immae.eu"
    TITLE              = "Cryptoportfolio"

# eval .. dans .zshrc_local
# mkdir -p $BUILD/go
# export GOPATH=$BUILD/go
# go get -u github.com/golang/dep/cmd/dep
# export PATH=$PATH:$BUILD/go/bin
# go get git.immae.eu/Cryptoportfolio/Front.git
# cd $BUILD/go/src/git.immae.eu/Cryptoportfolio/Front.git
# git checkout dev
# dep ensure
def configure(c):
    c["buildbotURL"] = E.BUILDBOT_URL
    c["www"]["port"] = E.SOCKET

    c['workers'].append(worker.LocalWorker("generic-worker"))
    c['workers'].append(worker.LocalWorker("deploy-worker"))

    c['schedulers'].append(hook_scheduler("Trader"))
    c['schedulers'].append(hook_scheduler("Front"))
    c['schedulers'].append(force_scheduler(
        "force_cryptoportfolio", ["Trader_build", "Front_build"]))
    c['schedulers'].append(deploy_scheduler("deploy_cryptoportfolio",
        ["Trader_deploy", "Front_deploy"]))

    c['builders'].append(factory("trader"))
    c['builders'].append(factory("front", ignore_fails=True))

    c['builders'].append(deploy_factory("trader"))
    c['builders'].append(deploy_factory("front"))

    c['services'].append(SlackStatusPush(
        name="slack_status_cryptoportfolio",
        builders=["Front_build", "Trader_build", "Front_deploy", "Trader_deploy"],
        serverUrl=open(E.SECRETS_FILE + "/slack_webhook", "r").read().rstrip()))

def factory(project, ignore_fails=False):
    release_file = "{1}/{0}/{0}_%(kw:clean_branch)s.tar.gz"

    url = E.GIT_URL.format(project.capitalize())

    package = util.Interpolate("{0}_%(kw:clean_branch)s.tar.gz".format(project), clean_branch=clean_branch)
    package_dest = util.Interpolate(release_file.format(project, E.RELEASE_PATH), clean_branch=clean_branch)
    package_url = util.Interpolate(release_file.format(project, E.RELEASE_URL), clean_branch=clean_branch)

    factory = util.BuildFactory()
    factory.addStep(steps.Git(logEnviron=False, repourl=url,
        mode="full", method="copy"))
    factory.addStep(steps.ShellCommand(name="make install",
        logEnviron=False, haltOnFailure=(not ignore_fails),
        warnOnFailure=ignore_fails, flunkOnFailure=(not ignore_fails),
        command=["make", "install"]))
    factory.addStep(steps.ShellCommand(name="make test",
        logEnviron=False, haltOnFailure=(not ignore_fails),
        warnOnFailure=ignore_fails, flunkOnFailure=(not ignore_fails),
        command=["make", "test"]))
    factory.addSteps(package_and_upload(package, package_dest, package_url))

    return util.BuilderConfig(
            name="{}_build".format(project.capitalize()),
            workernames=["generic-worker"], factory=factory)

def compute_build_infos(project):
    @util.renderer
    def compute(props):
        import re, hashlib
        build_file = props.getProperty("build")
        package_dest = "{2}/{0}/{1}".format(project, build_file, E.RELEASE_PATH)
        version = re.match(r"{0}_(.*).tar.gz".format(project), build_file).group(1)
        with open(package_dest, "rb") as f:
            sha = hashlib.sha256(f.read()).hexdigest()
        return {
                "build_version": version,
                "build_hash": sha,
                }
    return compute

@util.renderer
def puppet_host(props):
    environment = props["environment"] if props.hasProperty("environment") else "integration"
    return E.PUPPET_HOST.get(environment, "host.invalid")

def deploy_factory(project):
    package_dest = util.Interpolate("{1}/{0}/%(prop:build)s".format(project, E.RELEASE_PATH))

    factory = util.BuildFactory()
    factory.addStep(steps.MasterShellCommand(command=["test", "-f", package_dest]))
    factory.addStep(steps.SetProperties(properties=compute_build_infos(project)))
    factory.addStep(LdapPush(environment=util.Property("environment"),
        project=project, build_version=util.Property("build_version"),
        build_hash=util.Property("build_hash"), ldap_password=util.Secret("ldap")))
    factory.addStep(steps.MasterShellCommand(command=[
        "ssh", "-o", "UserKnownHostsFile=/dev/null", "-o", "StrictHostKeyChecking=no", "-o", "CheckHostIP=no", "-i", E.SSH_KEY_PATH, puppet_host]))
    return util.BuilderConfig(name="{}_deploy".format(project.capitalize()), workernames=["deploy-worker"], factory=factory)

from twisted.internet import defer
from buildbot.process.buildstep import FAILURE
from buildbot.process.buildstep import SUCCESS
from buildbot.process.buildstep import BuildStep

class LdapPush(BuildStep):
    name = "LdapPush"
    renderables = ["environment", "project", "build_version", "build_hash", "ldap_password"]

    def __init__(self, **kwargs):
        self.environment = kwargs.pop("environment")
        self.project = kwargs.pop("project")
        self.build_version = kwargs.pop("build_version")
        self.build_hash = kwargs.pop("build_hash")
        self.ldap_password = kwargs.pop("ldap_password")
        self.ldap_host = kwargs.pop("ldap_host", E.LDAP_HOST)
        super().__init__(**kwargs)

    def run(self):
        import json
        from ldap3 import Reader, Writer, Server, Connection, ObjectDef
        server = Server(self.ldap_host)
        conn = Connection(server,
                user=E.LDAP_DN,
                password=self.ldap_password)
        conn.bind()
        obj = ObjectDef("immaePuppetClass", conn)
        r = Reader(conn, obj,
                "cn=cryptoportfolio.{},{}".format(self.environment, E.LDAP_ROLES_BASE))
        r.search()
        if len(r) > 0:
            w = Writer.from_cursor(r)
            for value in w[0].immaePuppetJson.values:
                config = json.loads(value)
                if "role::cryptoportfolio::{}_version".format(self.project) in config:
                    config["role::cryptoportfolio::{}_version".format(self.project)] = self.build_version
                    config["role::cryptoportfolio::{}_sha256".format(self.project)] = self.build_hash
                    w[0].immaePuppetJson -= value
                    w[0].immaePuppetJson += json.dumps(config, indent="  ")
                    w.commit()
                    return defer.succeed(SUCCESS)
        return defer.succeed(FAILURE)