package web

import (
	"strings"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestParseLogErrorsStopsAtNextTimestampedLine(t *testing.T) {
	content := strings.Join([]string{
		"[2026-08-19 10:00:00] [INFO] starting",
		"[2026-08-19 10:00:01] [ERROR] first failure",
		"stack trace line one",
		"[2026-08-19 10:00:02] [INFO] unrelated next entry",
		"should not be collected",
		"[2026-08-19 10:00:03] [FATAL] second failure",
		"[2026-08-19 10:00:04] [INFO] tail",
	}, "\n")

	errs := parseLogErrors(content, 5)
	require.Len(t, errs, 2)

	// Results are returned in chronological order.
	assert.Equal(t, "2026-08-19 10:00:01", errs[0].Timestamp)
	assert.Equal(t, "first failure", errs[0].Message)
	assert.Equal(t, "stack trace line one", errs[0].Details)

	// The following line is a separate timestamped entry, not details.
	assert.Equal(t, "second failure", errs[1].Message)
	assert.Equal(t, "", errs[1].Details)
}

func TestParseLogErrorsSkipsEmptyDetailLines(t *testing.T) {
	content := strings.Join([]string{
		"[2026-08-19 10:00:00] [ERROR] failure",
		"",
		"detail after blank line",
	}, "\n")

	errs := parseLogErrors(content, 5)
	require.Len(t, errs, 1)
	assert.Equal(t, "detail after blank line", errs[0].Details)
}