// Copyright 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package apidVerifyApiKey

import (
	"sync"

	"github.com/30x/apid-core"
)

const (
	apiPath = "/verifiers/apikey"
)

var (
	log      apid.LogService
	data     apid.DataService
	events   apid.EventsService
	unsafeDB apid.DB
	dbMux    sync.RWMutex
)

func getDB() apid.DB {
	dbMux.RLock()
	db := unsafeDB
	dbMux.RUnlock()
	return db
}

func setDB(db apid.DB) {
	dbMux.Lock()
	unsafeDB = db
	dbMux.Unlock()
}

func init() {
	apid.RegisterPlugin(initPlugin)
}

func initPlugin(services apid.Services) (apid.PluginData, error) {
	log = services.Log().ForModule("apidVerifyAPIKey")
	log.Debug("start init")

	data = services.Data()
	events = services.Events()

	services.API().HandleFunc(apiPath, handleRequest).Methods("POST")

	events.Listen("ApigeeSync", &handler{})
	log.Debug("end init")

	return pluginData, nil
}

func createTables(db apid.DB) {
	_, err := db.Exec(`
CREATE TABLE IF NOT EXISTS kms_api_product (
    id text,
    tenant_id text,
    name text,
    display_name text,
    description text,
    api_resources text[],
    approval_type text,
    _change_selector text,
    proxies text[],
    environments text[],
    quota text,
    quota_time_unit text,
    quota_interval int,
    created_at int64,
    created_by text,
    updated_at int64,
    updated_by text,
    PRIMARY KEY (tenant_id, id));
CREATE TABLE IF NOT EXISTS kms_developer (
    id text,
    tenant_id text,
    username text,
    first_name text,
    last_name text,
    password text,
    email text,
    status text,
    encrypted_password text,
    salt text,
    _change_selector text,
    created_at int64,
    created_by text,
    updated_at int64,
    updated_by text,
    PRIMARY KEY (tenant_id, id)
);
CREATE TABLE IF NOT EXISTS kms_company (
    id text,
    tenant_id text,
    name text,
    display_name text,
    status text,
    created_at int64,
    created_by text,
    updated_at int64,
    updated_by text,
    _change_selector text,
    PRIMARY KEY (tenant_id, id)
);
CREATE TABLE IF NOT EXISTS kms_company_developer (
     tenant_id text,
     company_id text,
     developer_id text,
    roles text[],
    created_at int64,
    created_by text,
    updated_at int64,
    updated_by text,
    _change_selector text,
    PRIMARY KEY (tenant_id, company_id,developer_id)
);
CREATE TABLE IF NOT EXISTS kms_app (
    id text,
    tenant_id text,
    name text,
    display_name text,
    access_type text,
    callback_url text,
    status text,
    app_family text,
    company_id text,
    parent_id text,
    developer_id text,
    type int,
    created_at int64,
    created_by text,
    updated_at int64,
    updated_by text,
    _change_selector text,
    PRIMARY KEY (tenant_id, id)
);
CREATE TABLE IF NOT EXISTS kms_app_credential (
    id text,
    tenant_id text,
    consumer_secret text,
    app_id text,
    method_type text,
    status text,
    issued_at int64,
    expires_at int64,
    app_status text,
    _change_selector text,
    PRIMARY KEY (tenant_id, id)
);
CREATE TABLE IF NOT EXISTS kms_app_credential_apiproduct_mapper (
    tenant_id text,
    appcred_id text,
    app_id text,
    apiprdt_id text,
    _change_selector text,
    status text,
    PRIMARY KEY (appcred_id, app_id, apiprdt_id,tenant_id)
);
CREATE INDEX IF NOT EXISTS company_id ON kms_company (id);
CREATE INDEX IF NOT EXISTS developer_id ON kms_developer (id);
CREATE INDEX IF NOT EXISTS api_product_id ON kms_api_product (id);
CREATE INDEX IF NOT EXISTS app_id ON kms_app (id);
`)
	if err != nil {
		log.Panic("Unable to initialize DB", err)
	}
}

func createApidClusterTables(db apid.DB) {
	_, err := db.Exec(`
CREATE TABLE edgex_apid_cluster (
    id text,
    instance_id text,
    name text,
    description text,
    umbrella_org_app_name text,
    created int64,
    created_by text,
    updated int64,
    updated_by text,
    _change_selector text,
    snapshotInfo text,
    lastSequence text,
    PRIMARY KEY (id)
);
CREATE TABLE edgex_data_scope (
    id text,
    apid_cluster_id text,
    scope text,
    org text,
    env text,
    created int64,
    created_by text,
    updated int64,
    updated_by text,
    _change_selector text,
    PRIMARY KEY (id)
);
`)
	if err != nil {
		log.Panic("Unable to initialize DB", err)
	}
}