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package config
import (
"encoding/json"
"fmt"
"log/slog"
"os"
"github.com/go-playground/validator/v10"
"gopkg.in/yaml.v3"
)
type Config struct {
LogLevel slog.Level `json:"LogLevel" yaml:"logLevel" validate:"required"`
BlogPages BlogPagesConfig `json:"BlogPages" yaml:"blogPages" validate:"required"`
FactGiver FactGiverConfig `json:"FactGiver" yaml:"factGiver" validate:"required"`
LocalePath string `json:"LocalePath" yaml:"localePath" validate:"required,filepath"`
AvailableLanguages []AvailableLanguageConfig `json:"AvailableLanguages" yaml:"availableLanguages" validate:"required"`
Auth AuthConfig `json:"Auth" yaml:"auth" validate:"required"`
Mail MailConfig `json:"Mail" yaml:"mail" validate:"required"`
CanonicalEndpoint string `json:"CanonicalEndpoint" yaml:"canonicalEndpoint" validate:"required"`
Meta MetaConfig `json:"Meta" yaml:"meta"`
}
type BlogPagesConfig struct {
Storage StorageConfig `json:"Storage" yaml:"storage" validate:"required"`
}
type StorageConfig struct {
Type string `json:"type" yaml:"type,oneof=b2 s3"`
Config any `json:"Config" yaml:"config" validate:"required"`
}
func (sc *StorageConfig) UnmarshalJSON(data []byte) error {
var tmp struct {
Type string `json:"Type"`
Config json.RawMessage `json:"Config"`
}
if err := json.Unmarshal(data, &tmp); err != nil {
return err
}
sc.Type = tmp.Type
switch tmp.Type {
case "b2":
var b2Config B2Config
if err := json.Unmarshal(tmp.Config, &b2Config); err != nil {
return fmt.Errorf("unmarshal B2Config: %w", err)
}
sc.Config = &b2Config
case "s3":
var s3Config S3Config
if err := json.Unmarshal(tmp.Config, &s3Config); err != nil {
return fmt.Errorf("unmarshal S3Config: %w", err)
}
sc.Config = &s3Config
default:
return fmt.Errorf("unsupported storage type: %s", tmp.Type)
}
return nil
}
func (sc *StorageConfig) UnmarshalYAML(value *yaml.Node) error {
var tmp struct {
Type string `yaml:"type"`
Config yaml.Node `yaml:"config"`
}
if err := value.Decode(&tmp); err != nil {
return err
}
sc.Type = tmp.Type
switch tmp.Type {
case "b2":
var b2Config B2Config
if err := tmp.Config.Decode(&b2Config); err != nil {
return fmt.Errorf("unmarshal B2Config: %w", err)
}
sc.Config = &b2Config
case "s3":
var s3Config S3Config
if err := tmp.Config.Decode(&s3Config); err != nil {
return fmt.Errorf("unmarshal S3Config: %w", err)
}
sc.Config = &s3Config
default:
return fmt.Errorf("unsupported storage type: %s", tmp.Type)
}
return nil
}
type B2Config struct {
BucketName string `json:"BucketName" yaml:"bucketName" validate:"required,min=1"`
Region string `json:"Region" yaml:"region" validate:"required,min=1"`
Prefix string `json:"Prefix" yaml:"prefix"`
KeyID string `json:"KeyID" yaml:"keyID"`
ApplicationKey string `json:"ApplicationKey" yaml:"applicationKey"`
}
type S3Config struct {
BucketName string `json:"BucketName" yaml:"bucketName" validate:"required,min=1"`
Region string `json:"Region" yaml:"region" validate:"required,min=1"`
Prefix string `json:"Prefix" yaml:"prefix"`
Endpoint string `json:"Endpoint" yaml:"endpoint" validate:"required,url"`
AccessKeyID string `json:"AccessKeyID" yaml:"accessKeyID"`
SecretAccessKey string `json:"SecretAccessKey" yaml:"secretAccessKey"`
}
type FactGiverConfig struct {
Storage StorageConfig `json:"Storage" yaml:"storage" validate:"required"`
FactsFileName string `json:"FactsFileName" yaml:"factsFileName" validate:"required"`
}
type AvailableLanguageConfig struct {
Name string `json:"Name" yaml:"name" validate:"required"`
Alt string `json:"Alt" yaml:"alt"`
Flag string `json:"Flag" yaml:"flag" validate:"url"`
LocFile string `json:"LocFile" yaml:"locFile" validate:"required,filepath"`
}
type AuthConfig struct {
Salt string `json:"Salt" yaml:"salt" validate:"required"`
Db DbConfig `json:"Db" yaml:"db" validate:"required"`
}
type DbConfig struct {
Type string `json:"Type" yaml:"type" validate:"required,oneof=sqlite3"`
Cfg Sqlite3Config `json:"Config" yaml:"config"`
}
type Sqlite3Config struct {
DSN string `json:"DSN" yaml:"dsn" validate:"required"`
}
type MailConfig struct {
ClientHost string `json:"ClientHost" yaml:"clientHost" validate:"required"`
MailHost string `json:"MailHost" yaml:"mailHost" validate:"required"`
PublicName string `json:"PublicName" yaml:"publicName" validate:"required"`
MailAddress string `json:"MailAddress" yaml:"mailAddress" validate:"required"`
Username string `json:"Username" yaml:"username" validate:"required"`
Password string `json:"Password" yaml:"password" validate:"required"`
Salt string `json:"Salt" yaml:"salt" validate:"required"`
Trigger TriggerConfig `json:"Trigger" yaml:"trigger" validate:"required"`
}
type TriggerConfig struct {
OnNewPost string `json:"OnNewPost" yaml:"onNewPost" validate:"cron,required"`
}
type MetaConfig struct {
GoogleSiteVerification string `json:"GoogleSiteVerification" yaml:"googleSiteVerification"`
}
func LoadConfig(path string, config *Config) error {
fileBytes, err := os.ReadFile(path)
if err != nil {
return err
}
expandedFileBytes := []byte(os.ExpandEnv(string(fileBytes)))
if err = yaml.Unmarshal(expandedFileBytes, config); err != nil {
return err
}
return nil
}
func InitConfig(path string) (*Config, error) {
config := &Config{}
if err := LoadConfig(path, config); err != nil {
return nil, err
}
validate := validator.New(validator.WithRequiredStructEnabled())
if err := validate.Struct(config); err != nil {
return nil, err
}
return config, nil
}
|
