66 lines
2.1 KiB
Go
66 lines
2.1 KiB
Go
// main is the composition root for the application.
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// It wires together config, logger, and domain services — nothing more.
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// Business logic lives in internal/; cmd/ is deliberately thin.
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package main
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import (
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"fmt"
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"os"
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"gitea.djmil.dev/djmil/go-template/internal/config"
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"gitea.djmil.dev/djmil/go-template/internal/greeter"
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"gitea.djmil.dev/djmil/go-template/internal/logger"
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)
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func main() {
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if err := run(); err != nil {
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fmt.Fprintf(os.Stderr, "fatal: %v\n", err)
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os.Exit(1)
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}
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}
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func run() error {
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// ── Config ────────────────────────────────────────────────────────────────
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cfgPath := os.Getenv("CONFIG_PATH")
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if cfgPath == "" {
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cfgPath = "config/dev.yaml"
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}
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cfg, err := config.Load(cfgPath)
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if err != nil {
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return fmt.Errorf("loading config: %w", err)
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}
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// ── Logger ────────────────────────────────────────────────────────────────
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var log *logger.Logger
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if cfg.App.Env == "dev" {
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log, err = logger.NewDevelopment()
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} else {
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log, err = logger.New(cfg.Logger.Level)
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}
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if err != nil {
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return fmt.Errorf("creating logger: %w", err)
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}
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defer log.Sync()
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log.WithFields(map[string]any{
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"app": cfg.App.Name,
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"env": cfg.App.Env,
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}).Info("starting up")
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// ── Services ──────────────────────────────────────────────────────────────
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greetSvc := greeter.New(log)
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// ── Example usage ─────────────────────────────────────────────────────────
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msg, err := greetSvc.Greet("Gopher")
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if err != nil {
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return fmt.Errorf("greeter: %w", err)
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}
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log.WithField("message", msg).Info("greeting complete")
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fmt.Printf("%s (listening on :%d)\n", msg, cfg.App.Port)
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return nil
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}
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