package config

import (
	"encoding/json"
	"flag"
	"os"
)

type config struct {
	serverConf   *serverConfig
	logConf      *logConfig
	postgresConf map[string]*postgresConfig
	influxConf   map[string]*influxConfig
	redisConf    map[string]*redisConfig
	mongoConf    map[string]*mongoConfig
	rabbitConf   map[string][]*rabbitConfig
}

var conf *config
var confPath string

func init() {
	flag.StringVar(&confPath, "conf_path", "./configs", "conf path")
	flag.Parse()

	conf = new(config)

	conf.serverConf = new(serverConfig)
	serverConf := confPath + string(os.PathSeparator) + serverConfigName()
	conf.unmarshalJsonFile(serverConf, conf.serverConf)

	conf.logConf = new(logConfig)
	logConf := confPath + string(os.PathSeparator) + logConfigName()
	conf.unmarshalJsonFile(logConf, conf.logConf)

	conf.postgresConf = make(map[string]*postgresConfig)
	postgresConf := confPath + string(os.PathSeparator) + postgresConfigName()
	conf.unmarshalJsonFile(postgresConf, &conf.postgresConf)

	conf.influxConf = make(map[string]*influxConfig)
	influxConf := confPath + string(os.PathSeparator) + influxConfigName()
	conf.unmarshalJsonFile(influxConf, &conf.influxConf)

	conf.redisConf = make(map[string]*redisConfig)
	redisConf := confPath + string(os.PathSeparator) + redisConfigName()
	conf.unmarshalJsonFile(redisConf, &conf.redisConf)

	conf.mongoConf = make(map[string]*mongoConfig)
	mongoConf := confPath + string(os.PathSeparator) + mongoConfigName()
	conf.unmarshalJsonFile(mongoConf, &conf.mongoConf)

	conf.rabbitConf = make(map[string][]*rabbitConfig)
	rabbitConf := confPath + string(os.PathSeparator) + rabbitConfigName()
	conf.unmarshalJsonFile(rabbitConf, &conf.rabbitConf)
}

func Conf() *config {
	return conf
}

func (c *config) ServerConf() *serverConfig {
	if c == nil {
		panic("config is nil")
	}
	return c.serverConf
}

func (c *config) LogConf() *logConfig {
	if c == nil {
		panic("config is nil")
	}
	return c.logConf
}

func (c *config) PostgresConf(tag string) *postgresConfig {
	if c == nil || c.postgresConf == nil {
		panic("postgres config is nil")
	}
	return c.postgresConf[tag]
}

func (c *config) InfluxConf(tag string) *influxConfig {
	if c == nil || c.influxConf == nil {
		panic("influx config is nil")
	}
	return c.influxConf[tag]
}

func (c *config) RedisConf(tag string) *redisConfig {
	if c == nil || c.redisConf == nil {
		panic("redis config is nil")
	}
	return c.redisConf[tag]
}

func (c *config) MongoConf(tag string) *mongoConfig {
	if c == nil || c.mongoConf == nil {
		panic("mongo config is nil")
	}
	return c.mongoConf[tag]
}

func (c *config) RabbitConf(tag string) []*rabbitConfig {
	if c == nil || c.rabbitConf == nil {
		panic("rabbit config is nil")
	}
	return c.rabbitConf[tag]
}

func (c *config) unmarshalJsonFile(file string, dest any) {
	if filejson, err := os.ReadFile(file); err != nil {
		panic(err.Error())
	} else {
		err := json.Unmarshal([]byte(filejson), dest)
		if err != nil {
			panic(err.Error())
		}
	}
}