Files
ALR/internal/config/env_config.go
Maxim Slipenko c36d46cf96
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feat: config command
2025-06-29 21:15:05 +03:00

77 lines
1.9 KiB
Go

// ALR - Any Linux Repository
// Copyright (C) 2025 The ALR Authors
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package config
import (
"strings"
"github.com/knadh/koanf/providers/env"
"github.com/knadh/koanf/v2"
"golang.org/x/text/cases"
"golang.org/x/text/language"
)
type EnvConfig struct {
k *koanf.Koanf
}
func NewEnvConfig() *EnvConfig {
return &EnvConfig{
k: koanf.New("."),
}
}
func (c *EnvConfig) koanf() *koanf.Koanf {
return c.k
}
func (c *EnvConfig) Load() error {
allowedKeys := map[string]struct{}{
"ALR_LOG_LEVEL": {},
"ALR_PAGER_STYLE": {},
"ALR_AUTO_PULL": {},
}
err := c.k.Load(env.Provider("ALR_", ".", func(s string) string {
_, ok := allowedKeys[s]
if !ok {
return ""
}
withoutPrefix := strings.TrimPrefix(s, "ALR_")
lowered := strings.ToLower(withoutPrefix)
dotted := strings.ReplaceAll(lowered, "__", ".")
parts := strings.Split(dotted, ".")
for i, part := range parts {
if strings.Contains(part, "_") {
parts[i] = toCamelCase(part)
}
}
return strings.Join(parts, ".")
}), nil)
return err
}
func toCamelCase(s string) string {
parts := strings.Split(s, "_")
for i := 1; i < len(parts); i++ {
if len(parts[i]) > 0 {
parts[i] = cases.Title(language.Und, cases.NoLower).String(parts[i])
}
}
return strings.Join(parts, "")
}