'use strict';

const test = require('ava');
const supertest = require('supertest');
const { EventEmitter } = require('events');
const store = require('../../../test/fixtures/store');
const permissions = require('../../../test/fixtures/permissions');
const getLogger = require('../../../test/fixtures/no-logger');
const getApp = require('../../app');
const { UPDATE_APPLICATION } = require('../../permissions');

const eventBus = new EventEmitter();

function getSetup() {
    const stores = store.createStores();
    const perms = permissions();
    const app = getApp({
        baseUriPath: '',
        stores,
        eventBus,
        extendedPermissions: true,
        preRouterHook: perms.hook,
        getLogger,
    });

    return {
        request: supertest(app),
        stores,
        perms,
    };
}

test('should return seen toggles even when there is nothing', t => {
    t.plan(1);
    const { request } = getSetup();
    return request
        .get('/api/admin/metrics/seen-toggles')
        .expect(200)
        .expect(res => {
            t.true(res.body.length === 0);
        });
});

test('should return list of seen-toggles per app', t => {
    t.plan(3);
    const { request, stores } = getSetup();
    const appName = 'asd!23';
    stores.clientMetricsStore.emit('metrics', {
        appName,
        instanceId: 'instanceId',
        bucket: {
            start: new Date(),
            stop: new Date(),
            toggles: {
                toggleX: { yes: 123, no: 0 },
                toggleY: { yes: 123, no: 0 },
            },
        },
    });

    return request
        .get('/api/admin/metrics/seen-toggles')
        .expect(200)
        .expect(res => {
            const seenAppsWithToggles = res.body;
            t.true(seenAppsWithToggles.length === 1);
            t.true(seenAppsWithToggles[0].appName === appName);
            t.true(seenAppsWithToggles[0].seenToggles.length === 2);
        });
});

test('should return feature-toggles metrics even when there is nothing', t => {
    t.plan(0);
    const { request } = getSetup();
    return request.get('/api/admin/metrics/feature-toggles').expect(200);
});

test('should return metrics for all toggles', t => {
    t.plan(2);
    const { request, stores } = getSetup();
    const appName = 'asd!23';
    stores.clientMetricsStore.emit('metrics', {
        appName,
        instanceId: 'instanceId',
        bucket: {
            start: new Date(),
            stop: new Date(),
            toggles: {
                toggleX: { yes: 123, no: 0 },
                toggleY: { yes: 123, no: 0 },
            },
        },
    });

    return request
        .get('/api/admin/metrics/feature-toggles')
        .expect(200)
        .expect(res => {
            const metrics = res.body;
            t.true(metrics.lastHour !== undefined);
            t.true(metrics.lastMinute !== undefined);
        });
});

test('should return empty list of client applications', t => {
    t.plan(1);
    const { request } = getSetup();

    return request
        .get('/api/admin/metrics/applications')
        .expect(200)
        .expect(res => {
            t.true(res.body.applications.length === 0);
        });
});

test('should return applications', t => {
    t.plan(2);
    const { request, stores } = getSetup();
    const appName = '123!23';

    stores.clientApplicationsStore.upsert({ appName });

    return request
        .get(`/api/admin/metrics/applications/`)
        .expect(200)
        .expect(res => {
            const metrics = res.body;
            t.true(metrics.applications.length === 1);
            t.true(metrics.applications[0].appName === appName);
        });
});

test('should store application', t => {
    t.plan(0);
    const { request, perms } = getSetup();
    const appName = '123!23';
    perms.withPermissions(UPDATE_APPLICATION);

    return request
        .post(`/api/admin/metrics/applications/${appName}`)
        .send({ appName, strategies: ['default'] })
        .expect(202);
});

test('should store application details wihtout strategies', t => {
    t.plan(0);
    const { request, perms } = getSetup();
    const appName = '123!23';
    perms.withPermissions(UPDATE_APPLICATION);

    return request
        .post(`/api/admin/metrics/applications/${appName}`)
        .send({ appName, url: 'htto://asd.com' })
        .expect(202);
});

test('should not delete unknown application', t => {
    t.plan(0);
    const { request, perms } = getSetup();
    const appName = 'unknown';
    perms.withPermissions(UPDATE_APPLICATION);

    return request
        .delete(`/api/admin/metrics/applications/${appName}`)
        .expect(409);
});

test('should delete application', t => {
    t.plan(0);
    const { request, stores, perms } = getSetup();
    const appName = 'deletable-test';

    perms.withPermissions(UPDATE_APPLICATION);
    stores.clientApplicationsStore.upsert({ appName });

    return request
        .delete(`/api/admin/metrics/applications/${appName}`)
        .expect(200);
});
