package api

import (
	"testing"

	"github.com/jackc/pgx/v5/pgtype"
)

func TestUUIDToString(t *testing.T) {
	var u pgtype.UUID
	if err := u.Scan("00112233-4455-6677-8899-aabbccddeeff"); err != nil {
		t.Fatalf("scan: %v", err)
	}
	got := uuidToString(u)
	want := "00112233-4455-6677-8899-aabbccddeeff"
	if got != want {
		t.Errorf("uuidToString = %q, want %q", got, want)
	}

	var zero pgtype.UUID
	if s := uuidToString(zero); s != "" {
		t.Errorf("uuidToString(invalid) = %q, want empty", s)
	}
}

func TestParseUUID(t *testing.T) {
	u, ok := parseUUID("00112233-4455-6677-8899-aabbccddeeff")
	if !ok || !u.Valid {
		t.Fatalf("parseUUID valid: ok=%v valid=%v", ok, u.Valid)
	}
	if _, ok := parseUUID("not-a-uuid"); ok {
		t.Error("parseUUID accepted garbage")
	}
	if _, ok := parseUUID(""); ok {
		t.Error("parseUUID accepted empty string")
	}
}

func TestYearFromDate(t *testing.T) {
	var d pgtype.Date
	if y := yearFromDate(d); y != 0 {
		t.Errorf("yearFromDate(invalid) = %d, want 0", y)
	}
}

func TestDurationMsToSec(t *testing.T) {
	cases := []struct {
		ms   int32
		want int
	}{
		{0, 0},
		{500, 1},  // rounds up
		{499, 0},  // rounds down
		{1500, 2}, // rounds up
		{60000, 60},
	}
	for _, c := range cases {
		if got := durationMsToSec(c.ms); got != c.want {
			t.Errorf("durationMsToSec(%d) = %d, want %d", c.ms, got, c.want)
		}
	}
}

func TestCoverURLAndStreamURL(t *testing.T) {
	var u pgtype.UUID
	if err := u.Scan("00112233-4455-6677-8899-aabbccddeeff"); err != nil {
		t.Fatalf("scan: %v", err)
	}
	if got := coverURL(u); got != "/api/albums/00112233-4455-6677-8899-aabbccddeeff/cover" {
		t.Errorf("coverURL = %q", got)
	}
	if got := streamURL(u); got != "/api/tracks/00112233-4455-6677-8899-aabbccddeeff/stream" {
		t.Errorf("streamURL = %q", got)
	}
}