package sls

import (
	"gitea.drugeyes.vip/pharnexbase/utils/enum"
	sls "github.com/aliyun/aliyun-log-go-sdk"
	"github.com/aliyun/aliyun-log-go-sdk/producer"
)

type options struct {
	accessKey    string
	accessSecret string
	endpoint     string
	project      string
	logstore     string
}

func defaultOptions() *options {
	return &options{
		project:  "bcpm-log",
		logstore: "request-develop",
	}
}

// WithEndpoint 指定端口
func WithEndpoint(endpoint string) Option {
	return func(alc *options) {
		alc.endpoint = endpoint
	}
}

// WithProject 指定发送普通日志的project
func WithProject(project string) Option {
	return func(alc *options) {
		alc.project = project
	}
}

// WithLogstore 指定发送普通日志的logstore
func WithLogstore(logstore string) Option {
	return func(alc *options) {
		alc.logstore = logstore
	}
}

// WithAccessKey 设置访问access id
func WithAccessKey(ak string) Option {
	return func(alc *options) {
		alc.accessKey = ak
	}
}

// WithAccessSecret 设置访问access secret
func WithAccessSecret(as string) Option {
	return func(alc *options) {
		alc.accessSecret = as
	}
}

type Option func(alc *options)

type slsProducer struct {
	pr   *producer.Producer
	opts *options
}

// NewSLSProducer 创建一个高性能的sls制造者
func NewSLSProducer(opts ...Option) *slsProducer {
	opt := defaultOptions()

	for _, o := range opts {
		o(opt)
	}

	producerConfig := producer.GetDefaultProducerConfig()
	producerConfig.Endpoint = opt.endpoint
	producerConfig.AccessKeyID = opt.accessKey
	producerConfig.AccessKeySecret = opt.accessSecret
	producerInstance := producer.InitProducer(producerConfig)

	producerInstance.Start()
	return &slsProducer{
		pr:   producerInstance,
		opts: opt,
	}
}

// Close 程序结束时，必须调用该方法，不然可能导致部分日志丢失
func (s *slsProducer) Close() error {
	return s.pr.Close(5000)
}

// SendLog 发送普通日志
func (s *slsProducer) SendLog(topic, source string, log *sls.Log) error {
	err := s.pr.SendLog(s.opts.project, s.opts.logstore, topic, source, log)
	if err != nil {
		return err
	}
	return nil
}

// SendRequestLog 发送特定的请求日志，使用该方法时，不需要指定project和logstore
func (s *slsProducer) SendRequestLog(env enum.Env, req *Request) error {
	log := GenerateLog(req)

	err := s.pr.SendLog("bcpm-log", getLogStore(env), "request-go", req.RemoteAddr, log)
	if err != nil {
		return err
	}
	return nil
}

func getLogStore(env enum.Env) string {
	switch env {
	case enum.Env_local, enum.Env_develop:
		return "request-develop"
	case enum.Env_preview:
		return "request-preview"
	case enum.Env_production:
		return "request"
	default:
		return "request-develop"
	}
}