package cfg

import (
	"fmt"
	"os"

	"github.com/kelseyhightower/envconfig"
	"gopkg.in/yaml.v3"
)

type ServiceConfig struct {
	Address string `yaml:"address"`
	Port    int    `yaml:"port"`
}

type DatabaseConfig struct {
	Host     string `yaml:"host"`
	Port     string `yaml:"port"`
	Name     string `yaml:"name"`
	Username string `yaml:"username"`
	Password string `yaml:"password" json:"-"`
	DebugSQL bool   `yaml:"debugSQL"`
}

type ApplicationConfig struct {
	LogLevel        string `yaml:"logLevel"`
	LogFile         string `yaml:"logFile"`
	Debug           bool   `yaml:"debug"`
	DebugPrint      bool   `yaml:"debugPrint"`
	DisableSendMail bool   `yaml:"disableSendMail"`
	IsProduction    bool   `yaml:"isProduction"`
	MetricsPrefix   string `yaml:"metricsPrefix"`
}

type S3StorageConfig struct {
	AccessKey   string `yaml:"accessKey"`
	SecretKey   string `yaml:"secretKey"`
	RegionName  string `yaml:"regionName"`
	EndpointUrl string `yaml:"endpointUrl"`
	BucketName  string `yaml:"bucketName"`
	CertPath    string `yaml:"certPath"`
}

type CertConfig struct {
	FinaDemoCaCert string `yaml:"finaDemoCaCert"`
	FinaProdCaCert string `yaml:"finaProdCaCert"`
	DemoCertOib    string `yaml:"demoCertOib"`
}

type configStruct struct {
	Service     ServiceConfig     `yaml:"service"`
	Database    DatabaseConfig    `yaml:"database"`
	Application ApplicationConfig `yaml:"application"`
	S3Storage   S3StorageConfig   `yaml:"s3storage"`
	Cert        CertConfig        `yaml:"cert"`
}

const ENV_PREFIX = "FISKALATOR"
const ENV_CONFIG = ENV_PREFIX + "_CONFIG"
const DEFAULT_CONFIG_FILE = "config.yaml"

var Config configStruct

func panicWithError(err error) {
	panic("Config file error: " + err.Error())
}

func readFile(cfgFile string, cfg *configStruct) {
	f, err := os.Open(cfgFile)
	if err != nil {
		panicWithError(err)
	}
	defer f.Close()

	decoder := yaml.NewDecoder(f)
	err = decoder.Decode(cfg)
	if err != nil {
		panicWithError(err)
	}
}

func readEnv(cfg *configStruct) {
	err := envconfig.Process(ENV_PREFIX, cfg)
	if err != nil {
		panicWithError(err)
	}
}

func Init() {
	cfgFile := os.Getenv(ENV_CONFIG)
	if cfgFile == "" {
		cfgFile = DEFAULT_CONFIG_FILE
	}

	readFile(cfgFile, &Config)
	readEnv(&Config)

	maskedCfg := Config
	maskedCfg.Database.Password = "**password hidden**"
	maskedCfg.S3Storage.AccessKey = "**access key hidden**"
	maskedCfg.S3Storage.SecretKey = "**secret key hidden**"

	fmt.Println("--- CONFIG -------------------------------")
	fmt.Printf("%+v\n", maskedCfg)
	fmt.Println("------------------------------------------")
}