slack-status-cli/config.go

137 lines
3.0 KiB
Go

package main
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"os"
"path/filepath"
)
var (
errUnknownDomain = errors.New("unknown domain")
)
type configData struct {
DefaultDomain string
DomainTokens map[string]string
}
// getConfigFilePath returns the path of a given file within the config folder.
// The config folder will be created in ~/.local/config/slack-status-cli if it does not exist.
func getConfigFilePath(filename string) string {
configHome := os.Getenv("XDG_CONFIG_HOME")
if configHome == "" {
configHome = "~/.local/config"
}
configDir := filepath.Join(configHome, "slack-status-cli")
_ = os.MkdirAll(configDir, 0755)
return filepath.Join(configDir, filename)
}
// readConfig returns the current configuration
func readConfig() (*configData, error) {
configPath := getConfigFilePath("config.json")
if !fileExists(configPath) {
return &configData{DomainTokens: map[string]string{}}, nil
}
content, err := ioutil.ReadFile(configPath)
if err != nil {
return nil, fmt.Errorf("error reading config from file: %w", err)
}
var config configData
err = json.Unmarshal(content, &config)
if err != nil {
return nil, fmt.Errorf("failed parsing json from config file: %w", err)
}
return &config, nil
}
// writeConfig writes the provided config data
func writeConfig(config configData) error {
configPath := getConfigFilePath("config.json")
contents, err := json.Marshal(config)
if err != nil {
return fmt.Errorf("failed converting config to json: %w", err)
}
if err = ioutil.WriteFile(configPath, contents, 0600); err != nil {
return fmt.Errorf("error writing config to file: %w", err)
}
return nil
}
// getDefaultLogin returns the default login from the configuration
func getDefaultLogin() (string, error) {
config, err := readConfig()
if err != nil {
return "", err
}
accessToken, exists := config.DomainTokens[config.DefaultDomain]
if !exists {
return "", errUnknownDomain
}
return accessToken, nil
}
// getLogin returns the token for a specified login domain
func getLogin(domain string) (string, error) {
config, err := readConfig()
if err != nil {
return "", err
}
accessToken, exists := config.DomainTokens[domain]
if !exists {
return "", errUnknownDomain
}
return accessToken, nil
}
// saveLogin writes the provided token to the provided domain
func saveLogin(domain, accessToken string) error {
config, err := readConfig()
if err != nil {
return err
}
config.DomainTokens[domain] = accessToken
// If this is the only domain, make it default
if len(config.DomainTokens) == 1 {
config.DefaultDomain = domain
}
return writeConfig(*config)
}
// saveDefaultLogin saves the specified domain as the default
func saveDefaultLogin(domain string) error {
config, err := readConfig()
if err != nil {
return err
}
_, exists := config.DomainTokens[domain]
if !exists {
return fmt.Errorf("cannot set domain to default: %w", errUnknownDomain)
}
config.DefaultDomain = domain
return writeConfig(*config)
}