package handlers_test

import (
	"testing"

	"git.eeqj.de/sneak/upaas/internal/handlers"
)

func TestSanitizeTail(t *testing.T) {
	t.Parallel()

	tests := []struct {
		name     string
		input    string
		expected string
	}{
		{"empty uses default", "", handlers.DefaultLogTail},
		{"valid small number", "50", "50"},
		{"valid max boundary", "500", "500"},
		{"exceeds max clamped", "501", "500"},
		{"very large clamped", "999999", "500"},
		{"non-numeric uses default", "abc", handlers.DefaultLogTail},
		{"all keyword uses default", "all", handlers.DefaultLogTail},
		{"negative uses default", "-1", handlers.DefaultLogTail},
		{"zero uses default", "0", handlers.DefaultLogTail},
		{"float uses default", "1.5", handlers.DefaultLogTail},
		{"one is valid", "1", "1"},
	}

	for _, tc := range tests {
		t.Run(tc.name, func(t *testing.T) {
			t.Parallel()

			got := handlers.SanitizeTail(tc.input)
			if got != tc.expected {
				t.Errorf("sanitizeTail(%q) = %q, want %q", tc.input, got, tc.expected)
			}
		})
	}
}