package factory

import (
	"bytes"
	"testing"

	"github.com/jan/fm-rds-tx/internal/config"
)

func TestBuildSourceNone(t *testing.T) {
	cfg := config.Default()
	cfg.Ingest.Kind = "none"
	src, ingress, err := BuildSource(cfg, Deps{})
	if err != nil {
		t.Fatalf("build source: %v", err)
	}
	if src != nil || ingress != nil {
		t.Fatalf("expected nil source and ingress for kind=none")
	}
}

func TestBuildSourceHTTPRawProvidesIngress(t *testing.T) {
	cfg := config.Default()
	cfg.Ingest.Kind = "http-raw"
	src, ingress, err := BuildSource(cfg, Deps{})
	if err != nil {
		t.Fatalf("build source: %v", err)
	}
	if src == nil {
		t.Fatalf("expected source")
	}
	if ingress == nil {
		t.Fatalf("expected ingress for http-raw")
	}
}

func TestBuildSourceStdin(t *testing.T) {
	cfg := config.Default()
	cfg.Ingest.Kind = "stdin"
	src, ingress, err := BuildSource(cfg, Deps{Stdin: bytes.NewReader(nil)})
	if err != nil {
		t.Fatalf("build source: %v", err)
	}
	if src == nil {
		t.Fatalf("expected source")
	}
	if ingress != nil {
		t.Fatalf("expected no ingress for stdin")
	}
	if got := src.Descriptor().Kind; got != "stdin-pcm" {
		t.Fatalf("source kind=%s", got)
	}
}

func TestBuildSourceIcecastUsesDecoderPreference(t *testing.T) {
	cfg := config.Default()
	cfg.Ingest.Kind = "icecast"
	cfg.Ingest.Icecast.URL = "http://localhost:8000/stream"
	cfg.Ingest.Icecast.Decoder = "ffmpeg"
	src, ingress, err := BuildSource(cfg, Deps{})
	if err != nil {
		t.Fatalf("build source: %v", err)
	}
	if src == nil {
		t.Fatalf("expected source")
	}
	if ingress != nil {
		t.Fatalf("expected no ingress for icecast")
	}
	if got := src.Descriptor().Codec; got != "ffmpeg" {
		t.Fatalf("codec=%s want ffmpeg", got)
	}
}

func TestBuildSourceUnsupportedKind(t *testing.T) {
	cfg := config.Default()
	cfg.Ingest.Kind = "nope"
	_, _, err := BuildSource(cfg, Deps{})
	if err == nil {
		t.Fatalf("expected error")
	}
}

func TestSampleRateForKind(t *testing.T) {
	cfg := config.Default()
	cfg.Ingest.Kind = "stdin"
	cfg.Ingest.Stdin.SampleRateHz = 48000
	if got := SampleRateForKind(cfg); got != 48000 {
		t.Fatalf("stdin sample rate=%d", got)
	}

	cfg.Ingest.Kind = "http-raw"
	cfg.Ingest.HTTPRaw.SampleRateHz = 32000
	if got := SampleRateForKind(cfg); got != 32000 {
		t.Fatalf("http-raw sample rate=%d", got)
	}

	cfg.Ingest.Kind = "icecast"
	if got := SampleRateForKind(cfg); got != 44100 {
		t.Fatalf("icecast sample rate=%d", got)
	}
}