Radu Macocian (admac)
118 lines
2.2 KiB
Go
118 lines
2.2 KiB
Go
package config
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import (
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"encoding/json"
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"errors"
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"io"
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"log/slog"
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"os"
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)
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var ENV_PREFIX = "SOUV__"
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type Config struct {
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Api ApiConfig
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Llm LLMConfig
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Logging []LogConfig
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}
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type ApiConfig struct {
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Url string
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Key string
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}
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type LLMConfig struct {
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Model string
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}
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type LogConfig struct {
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Level slog.Level
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Format string
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Target string
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}
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func Load(path string) (*Config, error) {
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cfg := defaultConfig()
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if path != "" {
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if data, err := os.ReadFile(path); err == nil {
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if err := json.Unmarshal(data, cfg); err != nil {
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return nil, err
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}
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}
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}
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overrideFromEnv(cfg)
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configLogger(*cfg)
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return cfg, cfg.validate()
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}
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func configLogger(cfg Config) {
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if len(cfg.Logging) < 1 {
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opts := &slog.HandlerOptions{Level: slog.LevelInfo.Level()}
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slog.SetDefault(slog.New(slog.NewTextHandler(os.Stdout, opts)))
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return
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}
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var handlers []slog.Handler
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for _, c := range cfg.Logging {
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opts := &slog.HandlerOptions{Level: c.Level}
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target, err := getLogTarget(c.Target)
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if err != nil {
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slog.Error("Config error. Could not open target", "target", c.Target)
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}
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switch c.Format {
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case "text":
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handlers = append(handlers, slog.NewTextHandler(target, opts))
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case "json":
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handlers = append(handlers, slog.NewJSONHandler(target, opts))
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}
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}
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slog.SetDefault(slog.New(slog.NewMultiHandler(handlers...)))
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}
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func getLogTarget(target string) (io.Writer, error) {
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switch target {
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case "", "stdout":
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return os.Stdout, nil
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case "stderr":
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return os.Stderr, nil
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case "discrd":
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return io.Discard, nil
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default:
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return os.OpenFile(target, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0o644)
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}
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}
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func defaultConfig() *Config {
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return &Config{
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ApiConfig{
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Url: "",
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Key: ""},
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LLMConfig{Model: ""},
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[]LogConfig{{Level: slog.LevelInfo.Level(), Format: "text"}},
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}
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}
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func overrideFromEnv(cfg *Config) {
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val := os.Getenv(ENV_PREFIX + "api__url")
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if val != "" {
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cfg.Api.Url = val
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}
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val = os.Getenv(ENV_PREFIX + "api__key")
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if val != "" {
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cfg.Api.Key = val
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}
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val = os.Getenv(ENV_PREFIX + "llm__model")
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if val != "" {
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cfg.Llm.Model = val
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}
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}
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func (cfg Config) validate() error {
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if cfg.Api.Key == "" {
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return errors.New("No API key configured")
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}
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if cfg.Api.Url == "" {
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return errors.New("No API url configured")
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}
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return nil
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}
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