package service

import (
	"path/filepath"
	"testing"
)

func TestParseFPS(t *testing.T) {
	tests := []struct{ in, want string }{
		{"30/1", "30"},
		{"30000/1001", "29.97"},
		{"0/0", ""},
		{"", ""},
		{"garbage", ""},
	}
	for _, tc := range tests {
		if got := parseFPS(tc.in); got != tc.want {
			t.Errorf("parseFPS(%q) = %q, want %q", tc.in, got, tc.want)
		}
	}
}

func TestFormatBitrate(t *testing.T) {
	tests := []struct{ in, want string }{
		{"128000", "128"},
		{"", ""},
		{"notanumber", ""},
	}
	for _, tc := range tests {
		if got := formatBitrate(tc.in); got != tc.want {
			t.Errorf("formatBitrate(%q) = %q, want %q", tc.in, got, tc.want)
		}
	}
}

func TestGetMetadataForSelectedFile(t *testing.T) {
	requireFFmpeg(t)
	svc, dir := newLibrary(t)
	itemDir := writeItem(t, dir, "multi", "name = \"M\"\nduration = -1\n", nil)
	makeTestVideoSize(t, filepath.Join(itemDir, "small.mp4"), "64x64")
	makeTestVideoSize(t, filepath.Join(itemDir, "big.mp4"), "128x72")

	m1, err := svc.GetMetadata("multi", "small.mp4")
	if err != nil {
		t.Fatalf("GetMetadata small: %v", err)
	}
	if m1.Resolution != "64x64" {
		t.Errorf("small.mp4 resolution = %q, want 64x64", m1.Resolution)
	}
	m2, err := svc.GetMetadata("multi", "big.mp4")
	if err != nil {
		t.Fatalf("GetMetadata big: %v", err)
	}
	if m2.Resolution != "128x72" {
		t.Errorf("big.mp4 resolution = %q, want 128x72", m2.Resolution)
	}
}