Initial MVP commit

cmd/weatherapi/main.go

@@ -0,0 +1,83 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"os/signal"
+	"strings"
+	"syscall"
+
+	feedapp "gitea.maximumdirect.net/ejr/feedapi/app"
+	"gitea.maximumdirect.net/ejr/feedapi/config"
+	"gitea.maximumdirect.net/ejr/feedapi/db"
+	httpapi "gitea.maximumdirect.net/ejr/weatherapi/internal/adapters/inbound/httpapi"
+	wfpq "gitea.maximumdirect.net/ejr/weatherapi/internal/adapters/outbound/postgres"
+	"gitea.maximumdirect.net/ejr/weatherapi/internal/core"
+
+	_ "github.com/lib/pq"
+)
+
+func main() {
+	log.SetFlags(log.LstdFlags | log.Lmicroseconds)
+
+	cfgPath := flag.String("config", envOrDefault("WEATHERAPI_CONFIG", "config.yml"), "Path to config YAML")
+	flag.Parse()
+
+	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer cancel()
+
+	if err := run(ctx, *cfgPath); err != nil {
+		log.Fatalf("weatherapi failed: %v", err)
+	}
+}
+
+func run(ctx context.Context, cfgPath string) error {
+	cfg, err := config.Load(cfgPath)
+	if err != nil {
+		return fmt.Errorf("load config: %w", err)
+	}
+	if len(cfg.Databases) == 0 {
+		return fmt.Errorf("config.databases requires at least one entry")
+	}
+
+	reg, err := db.OpenAll(cfg.Databases)
+	if err != nil {
+		return fmt.Errorf("open databases: %w", err)
+	}
+	defer func() {
+		if cerr := reg.Close(); cerr != nil {
+			log.Printf("database close error: %v", cerr)
+		}
+	}()
+
+	primaryName := cfg.Databases[0].Name
+	primary, err := reg.Get(primaryName)
+	if err != nil {
+		return fmt.Errorf("select primary database %q: %w", primaryName, err)
+	}
+
+	repo := wfpq.NewRepository(primary)
+	svc := core.NewService(repo)
+	defs := httpapi.Definitions(svc)
+
+	a, err := feedapp.New(cfg,
+		feedapp.WithDBRegistry(reg),
+		feedapp.WithEndpoints(defs...),
+	)
+	if err != nil {
+		return fmt.Errorf("build app: %w", err)
+	}
+
+	return a.Start(ctx)
+}
+
+func envOrDefault(key, fallback string) string {
+	v := strings.TrimSpace(os.Getenv(key))
+	if v == "" {
+		return fallback
+	}
+	return v
+}