package urlutil

import (
	"reflect"
	"testing"
)

func TestExtractURLs(t *testing.T) {
	tests := []struct {
		name     string
		text     string
		expected []string
	}{
		{
			name:     "no URLs",
			text:     "just some plain text with no links",
			expected: []string{},
		},
		{
			name:     "single URL in text",
			text:     "check this out https://example.com/photo it is cool",
			expected: []string{"https://example.com/photo"},
		},
		{
			name:     "URL with trailing punctuation",
			text:     "look at https://example.com/photo.",
			expected: []string{"https://example.com/photo"},
		},
		{
			name:     "URL wrapped in parentheses",
			text:     "see (https://example.com/a) for details",
			expected: []string{"https://example.com/a"},
		},
		{
			name:     "multiple URLs",
			text:     "https://a.com/1 and http://b.com/2",
			expected: []string{"https://a.com/1", "http://b.com/2"},
		},
		{
			name:     "duplicate URLs are de-duplicated",
			text:     "https://a.com/1 https://a.com/1",
			expected: []string{"https://a.com/1"},
		},
		{
			name:     "command prefix stripped by extraction",
			text:     "!gallerydl https://example.com/gallery/123",
			expected: []string{"https://example.com/gallery/123"},
		},
		{
			name:     "non-http scheme ignored",
			text:     "ftp://example.com/file and https://ok.com/x",
			expected: []string{"https://ok.com/x"},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got := ExtractURLs(tt.text)
			if !reflect.DeepEqual(got, tt.expected) {
				t.Errorf("ExtractURLs(%q) = %v, want %v", tt.text, got, tt.expected)
			}
		})
	}
}