weatherfeeder: split the former maximumdirect.net/weatherd project in two.

feedkit now contains a reusable core, while weatherfeeder is a concrete implementation that includes weather-specific functions.

internal/sources/builtins.go

@@ -0,0 +1,56 @@
+package sources
+
+import (
+	"fmt"
+
+	"gitea.maximumdirect.net/ejr/weatherfeeder/internal/sources/nws"
+	"gitea.maximumdirect.net/ejr/weatherfeeder/internal/sources/openmeteo"
+	"gitea.maximumdirect.net/ejr/weatherfeeder/internal/sources/openweather"
+
+	"gitea.maximumdirect.net/ejr/feedkit/config"
+	fksource "gitea.maximumdirect.net/ejr/feedkit/sources"
+)
+
+// RegisterBuiltins registers the source drivers that ship with this binary.
+// Keeping this in one place makes main.go very readable.
+func RegisterBuiltins(r *fksource.Registry) {
+	// NWS drivers
+	r.Register("nws_observation", func(cfg config.SourceConfig) (fksource.Source, error) {
+		return nws.NewObservationSource(cfg)
+	})
+	r.Register("nws_alerts", func(cfg config.SourceConfig) (fksource.Source, error) {
+		return nws.NewAlertsSource(cfg)
+	})
+	r.Register("nws_forecast", func(cfg config.SourceConfig) (fksource.Source, error) {
+		return nws.NewForecastSource(cfg)
+	})
+
+	// Open-Meteo drivers
+	r.Register("openmeteo_observation", func(cfg config.SourceConfig) (fksource.Source, error) {
+		return openmeteo.NewObservationSource(cfg)
+	})
+
+	// OpenWeatherMap drivers
+	r.Register("openweather_observation", func(cfg config.SourceConfig) (fksource.Source, error) {
+		return openweather.NewObservationSource(cfg)
+	})
+}
+
+// Optional: centralize some common config checks used by multiple drivers.
+//
+// NOTE: feedkit/config.SourceConfig intentionally keeps driver-specific options
+// inside cfg.Params, so drivers can evolve independently without feedkit
+// importing domain config packages.
+func RequireURL(cfg config.SourceConfig) error {
+	if cfg.Params == nil {
+		return fmt.Errorf("source %q: params.url is required", cfg.Name)
+	}
+
+	// Canonical key is "url". We also accept "URL" as a convenience.
+	url, ok := cfg.ParamString("url", "URL")
+	if !ok {
+		return fmt.Errorf("source %q: params.url is required", cfg.Name)
+	}
+	_ = url // (optional) return it if you want this helper to provide the value
+	return nil
+}