/*
 *     Copyright 2020 The Dragonfly Authors
 *
 * 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 config

import (
	"io/ioutil"
	"reflect"
	"testing"
	"time"

	dc "d7y.io/dragonfly/v2/internal/dynconfig"
	"github.com/mitchellh/mapstructure"
	"github.com/stretchr/testify/assert"
	testifyassert "github.com/stretchr/testify/assert"
	"gopkg.in/yaml.v3"
)

func TestSchedulerConfig_Load(t *testing.T) {
	assert := testifyassert.New(t)

	config := &Config{
		DynConfig: &DynConfig{
			Type:       dc.LocalSourceType,
			ExpireTime: 1000,
			CDNDirPath: "tmp",
		},
		Scheduler: &SchedulerConfig{
			ABTest:     true,
			AScheduler: "a-scheduler",
			BScheduler: "b-scheduler",
			WorkerNum:  8,
		},
		Server: &ServerConfig{
			IP:   "127.0.0.1",
			Port: 8002,
		},

		Manager: &ManagerConfig{
			Addr:               "127.0.0.1:65003",
			SchedulerClusterID: 1,
			KeepAlive: KeepAliveConfig{
				Interval:         1 * time.Second,
				RetryMaxAttempts: 100,
				RetryInitBackOff: 100,
				RetryMaxBackOff:  100,
			},
		},
		Host: &HostConfig{
			IDC:      "foo",
			Location: "bar",
		},
		Task: &TaskConfig{
			GlobalWorkerNum:    1,
			SchedulerWorkerNum: 1,
			LocalWorkerNum:     5,
			Redis: &RedisConfig{
				Host:      "127.0.0.1",
				Port:      6379,
				Password:  "password",
				BrokerDB:  1,
				BackendDB: 2,
			},
		},
	}

	schedulerConfigYAML := &Config{}
	contentYAML, _ := ioutil.ReadFile("./testdata/scheduler.yaml")
	var dataYAML map[string]interface{}
	yaml.Unmarshal(contentYAML, &dataYAML)
	mapstructure.Decode(dataYAML, &schedulerConfigYAML)
	assert.True(reflect.DeepEqual(config, schedulerConfigYAML))
}

func TestConvert(t *testing.T) {
	tests := []struct {
		name   string
		value  *Config
		expect func(t *testing.T, cfg *Config, err error)
	}{
		{
			name: "convert common config",
			value: &Config{
				Manager: &ManagerConfig{
					Addr: "127.0.0.1:65003",
				},
				Task: &TaskConfig{
					Redis: &RedisConfig{
						Host: "",
					},
				},
			},
			expect: func(t *testing.T, cfg *Config, err error) {
				assert := assert.New(t)
				assert.Equal("127.0.0.1", cfg.Task.Redis.Host)
			},
		},
		{
			name: "convert config when host not empty",
			value: &Config{
				Manager: &ManagerConfig{
					Addr: "127.0.0.1:65003",
				},
				Task: &TaskConfig{
					Redis: &RedisConfig{
						Host: "111.111.11.1",
					},
				},
			},
			expect: func(t *testing.T, cfg *Config, err error) {
				assert := assert.New(t)
				assert.Equal("111.111.11.1", cfg.Task.Redis.Host)
			},
		},
		{
			name: "convert config when manager addr is empty",
			value: &Config{
				Manager: &ManagerConfig{
					Addr: "",
				},
				Task: &TaskConfig{
					Redis: &RedisConfig{
						Host: "111.111.11.1",
					},
				},
			},
			expect: func(t *testing.T, cfg *Config, err error) {
				assert := assert.New(t)
				assert.Equal("111.111.11.1", cfg.Task.Redis.Host)
			},
		},
		{
			name: "convert config when manager host is empty",
			value: &Config{
				Manager: &ManagerConfig{
					Addr: ":65003",
				},
				Task: &TaskConfig{
					Redis: &RedisConfig{
						Host: "",
					},
				},
			},
			expect: func(t *testing.T, cfg *Config, err error) {
				assert := assert.New(t)
				assert.Equal("", cfg.Task.Redis.Host)
			},
		},
		{
			name: "convert config when manager host is localhost",
			value: &Config{
				Manager: &ManagerConfig{
					Addr: "localhost:65003",
				},
				Task: &TaskConfig{
					Redis: &RedisConfig{
						Host: "",
					},
				},
			},
			expect: func(t *testing.T, cfg *Config, err error) {
				assert := assert.New(t)
				assert.Equal("localhost", cfg.Task.Redis.Host)
			},
		},
	}

	for _, tc := range tests {
		t.Run(tc.name, func(t *testing.T) {
			err := tc.value.Convert()
			tc.expect(t, tc.value, err)
		})
	}
}