package sources

import (
	"context"
	"strings"
	"testing"

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

type testPollSource struct{ name string }

func (s testPollSource) Name() string { return s.name }
func (s testPollSource) Poll(context.Context) ([]event.Event, error) {
	return nil, nil
}

type testStreamSource struct{ name string }

func (s testStreamSource) Name() string { return s.name }
func (s testStreamSource) Run(context.Context, chan<- event.Event) error {
	return nil
}

func TestRegistryBuildInputModeConflicts(t *testing.T) {
	r := NewRegistry()
	r.RegisterPoll("poll_driver", func(cfg config.SourceConfig) (PollSource, error) {
		return testPollSource{name: cfg.Name}, nil
	})
	r.RegisterStream("stream_driver", func(cfg config.SourceConfig) (StreamSource, error) {
		return testStreamSource{name: cfg.Name}, nil
	})

	_, err := r.BuildInput(config.SourceConfig{
		Name:   "s1",
		Driver: "stream_driver",
		Mode:   config.SourceModePoll,
	})
	if err == nil {
		t.Fatalf("expected mode conflict error, got nil")
	}
	if !strings.Contains(err.Error(), "mode=poll") {
		t.Fatalf("expected poll conflict error, got: %v", err)
	}

	_, err = r.BuildInput(config.SourceConfig{
		Name:   "s2",
		Driver: "poll_driver",
		Mode:   config.SourceModeStream,
	})
	if err == nil {
		t.Fatalf("expected mode conflict error, got nil")
	}
	if !strings.Contains(err.Error(), "mode=stream") {
		t.Fatalf("expected stream conflict error, got: %v", err)
	}
}

func TestRegistryBuildInputAutoByDriverType(t *testing.T) {
	r := NewRegistry()
	r.RegisterPoll("poll_driver", func(cfg config.SourceConfig) (PollSource, error) {
		return testPollSource{name: cfg.Name}, nil
	})
	r.RegisterStream("stream_driver", func(cfg config.SourceConfig) (StreamSource, error) {
		return testStreamSource{name: cfg.Name}, nil
	})

	src, err := r.BuildInput(config.SourceConfig{Name: "p", Driver: "poll_driver"})
	if err != nil {
		t.Fatalf("BuildInput poll auto failed: %v", err)
	}
	if _, ok := src.(PollSource); !ok {
		t.Fatalf("expected PollSource, got %T", src)
	}

	src, err = r.BuildInput(config.SourceConfig{Name: "s", Driver: "stream_driver"})
	if err != nil {
		t.Fatalf("BuildInput stream auto failed: %v", err)
	}
	if _, ok := src.(StreamSource); !ok {
		t.Fatalf("expected StreamSource, got %T", src)
	}
}