96 lines
2.1 KiB
Go
96 lines
2.1 KiB
Go
package config
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import (
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"io"
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"io/ioutil"
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"github.com/caarlos0/env/v6"
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"github.com/pkg/errors"
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"gopkg.in/yaml.v2"
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)
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// Config is the configuration struct
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type Config struct {
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HTTP HTTPConfig `yaml:"http"`
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Client ClientConfig `yaml:"client"`
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Data DataConfig `ymal:"data"`
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}
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// HTTPConfig is the configuration part which defines HTTP related params
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type HTTPConfig struct {
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Address string `yaml:"address" env:"GUESSTIMATE_HTTP_ADDRESS"`
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PublicDir string `yaml:"publicDir" env:"GUESSTIMATE_PUBLIC_DIR"`
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}
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// ClientConfig is the configuration part which defines the client app related params
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type ClientConfig struct {
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PublicBaseURL string `yaml:"publicbaseurl" env:"GUESSTIMATE_CLIENT_PUBLIC_BASE_URL"`
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}
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// DataConfig is the configuration part which defines data related params
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type DataConfig struct {
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Path string `yaml:"path" env:"GUESSTIMATE_DATA_PATH"`
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}
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// NewFromFile retrieves the configuration from the given file
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func NewFromFile(filepath string) (*Config, error) {
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config := NewDefault()
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data, err := ioutil.ReadFile(filepath)
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if err != nil {
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return nil, errors.Wrapf(err, "could not read file '%s'", filepath)
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}
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if err := yaml.Unmarshal(data, config); err != nil {
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return nil, errors.Wrapf(err, "could not unmarshal configuration")
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}
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return config, nil
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}
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// WithEnvironment retrieves the configuration from env vars
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func WithEnvironment(conf *Config) error {
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if err := env.Parse(conf); err != nil {
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return err
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}
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return nil
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}
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// NewDumpDefault retrieves the default configuration
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func NewDumpDefault() *Config {
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config := NewDefault()
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return config
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}
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// NewDefault creates and returns a new default configuration
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func NewDefault() *Config {
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return &Config{
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HTTP: HTTPConfig{
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Address: ":8081",
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PublicDir: "public",
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},
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Client: ClientConfig{
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PublicBaseURL: "http://localhost:8080",
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},
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Data: DataConfig{
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Path: "guesstimate.db",
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},
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}
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}
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// Dump writes a given config to a config file
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func Dump(config *Config, w io.Writer) error {
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data, err := yaml.Marshal(config)
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if err != nil {
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return errors.Wrap(err, "could not dump config")
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}
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if _, err := w.Write(data); err != nil {
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return err
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}
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return nil
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}
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