package sources

import (
	"context"

	"gitea.maximumdirect.net/ejr/feedkit/event"
)

// Source is a configured polling job that emits 0..N events per poll.
//
// Source implementations live in domain modules (weatherfeeder/newsfeeder/...)
// and are registered into a feedkit sources.Registry.
//
// feedkit infrastructure treats Source as opaque; it just calls Poll()
// on the configured cadence and publishes the resulting events.
type Source interface {
	// Name is the configured source name (used for logs and included in emitted events).
	Name() string

	// Kind is the "primary kind" emitted by this source.
	//
	// This is mainly useful as a *safety check* (e.g. config says kind=forecast but
	// driver emits observation). Some future sources may emit multiple kinds; if/when
	// that happens, we can evolve this interface (e.g., make Kind optional, or remove it).
	Kind() event.Kind

	// Poll fetches from upstream and returns 0..N events.
	// Implementations should honor ctx.Done() for network calls and other I/O.
	Poll(ctx context.Context) ([]event.Event, error)
}