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#   http://www.apache.org/licenses/LICENSE-2.0
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# Provides extra kopf handlers to manage openserverless users
import logging
from datetime import datetime

import kopf

import openserverless.config as cfg
import openserverless.couchdb as cdb
import openserverless.endpoint as endpoint
import openserverless.ferretdb as mdb
import openserverless.kube as kube
import openserverless.milvus_standalone as milvus
import openserverless.minio_deploy as minio_deploy
import openserverless.postgres_operator as postgres
import openserverless.redis as redis
import openserverless.storage_static as static
import openserverless.user_patcher as user_patcher
import openserverless.userdb_util as userdb
import openserverless.seaweedfs_deploy as seaweedfs
from openserverless.quota_checker import REDIS_DB_QUOTA_ANNOTATION
from openserverless.user_config import UserConfig
from openserverless.user_metadata import UserMetadata


def get_ucfg(spec):
    ucfg = UserConfig(spec)
    ucfg.dump_config()
    return ucfg

@kopf.on.create('openserverless.org', 'v1', 'whisksusers')
def whisk_user_create(spec, name, patch, **kwargs):
    logging.info(f"*** whisk_user_create {name}")
    conditions = []
    state = {
    }

    conditions.append({        
        "lastTransitionTime": datetime.now().strftime("%Y-%m-%d %H:%M:%S"),
        "status": "True",
        "type": "Initialized"})

    ucfg = get_ucfg(spec)
    user_metadata = UserMetadata(ucfg)
    owner = kube.get(f"wsku/{name}")
    
    if(ucfg.get("namespace") and ucfg.get("auth")):
        res = cdb.create_ow_user(ucfg,user_metadata)       
        logging.info(f"OpenWhisk subject {ucfg.get('namespace')} added = {res}")
        state['couchdb']= res

        res = endpoint.create_ow_api_endpoint(ucfg,user_metadata)
        logging.info(f"OpenWhisk api endpoints {ucfg.get('namespace')} added = {res}")
        state['api']= res

    if(cfg.get('components.minio') and (ucfg.get('object-storage.data.enabled') or ucfg.get('object-storage.route.enabled'))):        
        minio_deploy.create_ow_storage(state, ucfg, user_metadata, owner)

    if(cfg.get('components.seaweedfs') and (ucfg.get('object-storage.data.enabled') or ucfg.get('object-storage.route.enabled'))):        
        seaweedfs.create_ow_storage(state, ucfg, user_metadata, owner)        

    if((cfg.get('components.minio') or cfg.get('components.seaweedfs')) and ucfg.get('object-storage.route.enabled') and cfg.get('components.static')):
        res = static.create_ow_static_endpoint(ucfg,user_metadata, owner)
        logging.info("OpenWhisk static endpoint for %s added = %s", ucfg.get('namespace'), res)
        state['static']= res

    if(cfg.get('components.mongodb') and ucfg.get('mongodb.enabled')):
        res = mdb.create_db_user(ucfg,user_metadata)
        logging.info(f"Mongodb setup for {ucfg.get('namespace')} added = {res}")
        state['mongodb']= res

    if(cfg.get('components.redis') and ucfg.get('redis.enabled')):
        res = redis.create_db_user(ucfg, user_metadata)
        logging.info(f"Redis setup for {ucfg.get('namespace')} added = {res}")
        state['redis']= res

    if(cfg.get('components.postgres') and ucfg.get('postgres.enabled')):
        res = postgres.create_db_user(ucfg, user_metadata)
        logging.info(f"Postgres setup for {ucfg.get('namespace')} added = {res}")
        state['postgres']= res 

    if(cfg.get('components.milvus') and ucfg.get('milvus.enabled')):
        res = milvus.create_ow_milvus(ucfg, user_metadata)
        logging.info(f"Milvus setup for {ucfg.get('namespace')} added = {res}")
        state['milvus']= res

    # finally persists user metadata into the internal couchdb database
    user_metadata.dump()
    res = userdb.save_user_metadata(user_metadata)
    state['user_metadata']= res

    conditions.append({        
        "lastTransitionTime": datetime.now().strftime("%Y-%m-%d %H:%M:%S"),
        "status": "True",
        "type": "Ready"})

    patch.status['conditions']=conditions
    return state

@kopf.on.delete('openserverless.org', 'v1', 'whisksusers')
def whisk_user_delete(spec, name, **kwargs):
    logging.info(f"*** whisk_user_delete {name}")

    ucfg = get_ucfg(spec)

    if(ucfg.get("namespace")):
        res = endpoint.delete_ow_api_endpoint(ucfg)
        logging.info(f"OpenWhisk subject {ucfg.get('namespace')} api removed = {res}")

        res = cdb.delete_ow_user(ucfg.get("namespace"))
        logging.info(f"OpenWhisk subject {ucfg.get('namespace')} removed = {res}")

    if(cfg.get('components.minio') and (ucfg.get('object-storage.data.enabled') or ucfg.get('object-storage.route.enabled'))):        
        res = minio_deploy.delete_ow_storage(ucfg)
        logging.info(f"OpenWhisk namespace {ucfg.get('namespace')} MINIO storage removed = {res}")

    if(cfg.get('components.seaweedfs') and (ucfg.get('object-storage.data.enabled') or ucfg.get('object-storage.route.enabled'))):        
        res = seaweedfs.delete_ow_storage(ucfg)
        logging.info(f"OpenWhisk namespace {ucfg.get('namespace')} SEAWEEDFS storage removed = {res}")         

    if((cfg.get('components.minio') or cfg.get('components.seaweedfs')) and ucfg.get('object-storage.route.enabled') and cfg.get('components.static')):
        res = static.delete_ow_static_endpoint(ucfg)
        logging.info(f"OpenWhisk static endpoint for {ucfg.get('namespace')} removed = {res}")

    if(cfg.get('components.mongodb') and ucfg.get('mongodb.enabled')):
        res = mdb.delete_db_user(ucfg.get('namespace'),ucfg.get('mongodb.database'))
        logging.info(f"Mongodb setup for {ucfg.get('namespace')} removed = {res}")

    if(cfg.get('components.redis') and ucfg.get('redis.enabled')):
        res = redis.delete_db_user(ucfg.get('namespace'))
        logging.info(f"Redis setup for {ucfg.get('namespace')} removed = {res}")

    if(cfg.get('components.postgres') and ucfg.get('postgres.enabled')):
        res = postgres.delete_db_user(ucfg.get('namespace'),ucfg.get('postgres.database'))
        logging.info(f"Postgres setup for {ucfg.get('namespace')} removed = {res}")

    if(cfg.get('components.milvus') and ucfg.get('milvus.enabled')):
        res = milvus.delete_ow_milvus(ucfg)
        logging.info(f"Milvus setup for {ucfg.get('namespace')} removed = {res}")        

    res = userdb.delete_user_metadata(ucfg.get('namespace'))


@kopf.on.update('openserverless.org', 'v1', 'whisksusers')
def whisk_user_update(spec, status, namespace, diff, name, **kwargs):
    logging.info(f"*** detected an update of wsku/{name} under namespace {namespace}")
    
    owner = kube.get(f"wsku/{name}")
    
    ucfg = get_ucfg(spec)
    user_metadata = UserMetadata(ucfg)

    user_patcher.patch(ucfg,user_metadata,diff, status, owner, name)

@kopf.on.resume('openserverless.org', 'v1', 'whisksusers')
def whisk_user_resume(spec, name, namespace,annotations, **kwargs):
    logging.info(f"*** detected an update of wsku/{name} under namespace {namespace}")
    ucfg = get_ucfg(spec)
    user_metadata = UserMetadata(ucfg)
    state = {}
    
    if(cfg.get('components.redis') and ucfg.get('redis.enabled')):
        read_only_mode = False

        if annotations and REDIS_DB_QUOTA_ANNOTATION in annotations:
            read_only_mode = annotations[REDIS_DB_QUOTA_ANNOTATION] in ["true"]
            
        res = redis.create_db_user(ucfg,user_metadata,read_only_mode)
        logging.info(f"Redis setup for {ucfg.get('namespace')} resumed = {res}")
        state['redis']= res

    if(cfg.get('components.minio') and ucfg.get('object-storage.route.enabled') and cfg.get('components.static')):
        state['static']= True

    if(cfg.get('components.mongodb') and ucfg.get('mongodb.enabled')):
        state['mongodb']= True 

    if(cfg.get('components.milvus') and ucfg.get('milvus.enabled')):
        state['milvus']= True 

    if(cfg.get('components.postgres') and ucfg.get('postgres.enabled')):
        state['postgres']= True