import json

import requests
from requests.exceptions import HTTPError

from apigee import APIGEE_ADMIN_API_URL, auth, console

GET_A_LIST_OF_SHARED_FLOWS_PATH = '{api_url}/v1/organizations/{org}/sharedflows'
IMPORT_A_SHARED_FLOW_PATH = '{api_url}/v1/organizations/{org}/sharedflows'
# EXPORT_A_SHARED_FLOW_PATH = ''
GET_A_SHARED_FLOW_PATH = '{api_url}/v1/organizations/{org}/sharedflows/{shared_flow_name}'
DEPLOY_A_SHARED_FLOW_PATH = '{api_url}/v1/organizations/{org}/environments/{environment}/sharedflows/{shared_flow_name}/revisions/{revision_number}/deployments'
UNDEPLOY_SHARED_FLOW_REVISIONS_IN_ENVIRONMENT_PATH = ''
UNDEPLOY_A_SHARED_FLOW_PATH = (
    '{api_url}/v1/organizations/{org}/environments/{environment}/sharedflows/{shared_flow_name}/revisions/{revision_number}/deployments'
)
GET_DEPLOYMENT_ENVIRONMENTS_FOR_SHARED_FLOWS_PATH = '{api_url}/v1/organizations/{org}/sharedflows/{shared_flow_name}/revisions/{revision_number}/deployments'
DELETE_A_SHARED_FLOW_PATH = ''
# ATTACH_A_SHARED_FLOW_TO_A_FLOW_HOOK_PATH = ''
# DETACHES_A_SHARED_FLOW_FROM_A_FLOW_HOOK_PATH = ''
GET_THE_SHARED_FLOW_ATTACHED_TO_A_FLOW_HOOK_PATH = '{api_url}/v1/organizations/{org}/environments/{environment}/flowhooks/{flow_hook}'
GET_SHARED_FLOW_DEPLOYMENTS_PATH = '{api_url}/v1/organizations/{org}/sharedflows/{shared_flow_name}/deployments'
GET_SHARED_FLOW_REVISIONS_PATH = '{api_url}/v1/organizations/{org}/sharedflows/{shared_flow_name}/revisions'


class SharedflowsSerializer:
    def serialize_details(self, sharedflows, format, prefix=None):
        resp = sharedflows
        if format == 'text':
            return sharedflows.text
        sharedflows = sharedflows.json()
        if prefix:
            sharedflows = [sharedflow for sharedflow in sharedflows if sharedflow.startswith(prefix)]
        if format == 'json':
            return json.dumps(sharedflows)
        elif format == 'table':
            pass
        # else:
        #     raise ValueError(format)
        return resp


class Sharedflows:
    def __init__(self, auth, org_name):
        self._auth = auth
        self._org_name = org_name

    def __call__(self):
        pass

    @property
    def auth(self):
        return self._auth

    @auth.setter
    def auth(self, value):
        self._auth = value

    @property
    def org_name(self):
        return self._org_name

    @org_name.setter
    def org_name(self, value):
        self._org_name = value

    def get_a_list_of_shared_flows(self, prefix=None):
        uri = GET_A_LIST_OF_SHARED_FLOWS_PATH.format(api_url=APIGEE_ADMIN_API_URL, org=self._org_name)
        hdrs = auth.set_header(self._auth, {'Accept': 'application/json'})
        resp = requests.get(uri, headers=hdrs)
        resp.raise_for_status()
        return SharedflowsSerializer().serialize_details(resp, 'json', prefix=prefix)

    def import_a_shared_flow(self, shared_flow_file, shared_flow_name):
        uri = IMPORT_A_SHARED_FLOW_PATH.format(api_url=APIGEE_ADMIN_API_URL, org=self._org_name)
        hdrs = auth.set_header(self._auth, {'Accept': 'application/json', 'Content-Type': 'multipart/form-data'})
        params = {'action': 'import', 'name': shared_flow_name}
        with open(shared_flow_file, 'rb') as f:
            resp = requests.post(uri, headers=hdrs, files={'file': ('sharedflow.zip', f)}, params=params)
        resp.raise_for_status()
        return resp

    # def export_a_shared_flow(self, shared_flow_name, revision_number):
    #     pass

    def get_a_shared_flow(self, shared_flow_name):
        uri = GET_A_SHARED_FLOW_PATH.format(api_url=APIGEE_ADMIN_API_URL, org=self._org_name, shared_flow_name=shared_flow_name)
        hdrs = auth.set_header(self._auth, {'Accept': 'application/json'})
        resp = requests.get(uri, headers=hdrs)
        resp.raise_for_status()
        return resp

    def deploy_a_shared_flow(self, environment, shared_flow_name, revision_number, override=False, delay=0, shared_flow_file=None):
        deployed_shared_flows_exist = False
        try:
            if self.get_shared_flow_revisions(shared_flow_name):
                deployed_shared_flows_exist = True
        except HTTPError as e:
            if e.response.status_code != 404:
                raise e
        if deployed_shared_flows_exist:
            console.echo('Attempting undeployment... ')
            self.undeploy_shared_flow_revisions_in_environment(environment, shared_flow_name)
            console.echo('Done.')
        if shared_flow_file:
            revision_number = int(self.import_a_shared_flow(shared_flow_file, shared_flow_name).json()['revision'])
        uri = DEPLOY_A_SHARED_FLOW_PATH.format(
            api_url=APIGEE_ADMIN_API_URL, org=self._org_name, environment=environment, shared_flow_name=shared_flow_name, revision_number=revision_number
        )
        params = {'override': 'false'}
        if override:
            params['override'] = 'true'
        if delay:
            params['delay'] = f'{delay}'
        hdrs = auth.set_header(self._auth, {'Accept': 'application/json'})
        console.echo(f'Deploy revision {revision_number}... ', end='', flush=True)
        resp = requests.post(uri, headers=hdrs, params=params)
        resp.raise_for_status()
        console.echo('Done')
        return resp

    def undeploy_shared_flow_revisions_in_environment(self, environment, shared_flow_name):
        resp = self.get_shared_flow_deployments(shared_flow_name)
        for deployment in resp.json()['environment']:
            if deployment['name'] == environment:
                for detail in deployment['revision']:
                    revision_number = int(detail['name'])
                    console.echo(f'Undeploying revision {revision_number}... ', end='', flush=True)
                    self.undeploy_a_shared_flow(environment, shared_flow_name, revision_number)
                    console.echo('Done')
        return resp

    def undeploy_a_shared_flow(self, environment, shared_flow_name, revision_number):
        uri = UNDEPLOY_A_SHARED_FLOW_PATH.format(
            api_url=APIGEE_ADMIN_API_URL, org=self._org_name, environment=environment, shared_flow_name=shared_flow_name, revision_number=revision_number
        )
        hdrs = auth.set_header(self._auth, {'Accept': 'application/json'})
        resp = requests.delete(uri, headers=hdrs)
        resp.raise_for_status()
        return resp

    def get_deployment_environments_for_shared_flows(self, shared_flow_name, revision_number):
        uri = GET_DEPLOYMENT_ENVIRONMENTS_FOR_SHARED_FLOWS_PATH.format(
            api_url=APIGEE_ADMIN_API_URL, org=self._org_name, shared_flow_name=shared_flow_name, revision_number=revision_number
        )
        hdrs = auth.set_header(self._auth, {'Accept': 'application/json'})
        resp = requests.get(uri, headers=hdrs)
        resp.raise_for_status()
        return resp

    def delete_a_shared_flow(self, shared_flow_name):
        pass

    # def attach_a_shared_flow_to_a_flow_hook(self, environment, flow_hook, request_body):
    #     pass
    #
    # def detaches_a_shared_flow_from_a_flow_hook(self, environment, flow_hook):
    #     pass

    def get_the_shared_flow_attached_to_a_flow_hook(self, environment, flow_hook):
        uri = GET_THE_SHARED_FLOW_ATTACHED_TO_A_FLOW_HOOK_PATH.format(
            api_url=APIGEE_ADMIN_API_URL, org=self._org_name, environment=environment, flow_hook=flow_hook
        )
        hdrs = auth.set_header(self._auth, {'Accept': 'application/json'})
        resp = requests.get(uri, headers=hdrs)
        resp.raise_for_status()
        return resp

    def get_shared_flow_deployments(self, shared_flow_name):
        uri = GET_SHARED_FLOW_DEPLOYMENTS_PATH.format(api_url=APIGEE_ADMIN_API_URL, org=self._org_name, shared_flow_name=shared_flow_name)
        hdrs = auth.set_header(self._auth, {'Accept': 'application/json'})
        resp = requests.get(uri, headers=hdrs)
        resp.raise_for_status()
        return resp

    def get_shared_flow_revisions(self, shared_flow_name):
        uri = GET_SHARED_FLOW_REVISIONS_PATH.format(api_url=APIGEE_ADMIN_API_URL, org=self._org_name, shared_flow_name=shared_flow_name)
        hdrs = auth.set_header(self._auth, {'Accept': 'application/json'})
        resp = requests.get(uri, headers=hdrs)
        resp.raise_for_status()
        return resp
