package viral

import (
	"strings"
	"testing"
)

func TestExtractUsernames(t *testing.T) {
	blob := `See https://www.threads.net/@creator_one and threads.com/@creator_two/posts/abc`
	got := extractUsernames(blob)
	if len(got) != 2 {
		t.Fatalf("expected 2 usernames, got %d (%v)", len(got), got)
	}
}

func TestIsValidUsernameRejectsReserved(t *testing.T) {
	if isValidUsername("login") {
		t.Fatal("reserved username should be rejected")
	}
	if !isValidUsername("real_creator") {
		t.Fatal("valid username rejected")
	}
}

func TestBuildAccountDiscoverQueriesSingleCombinedQuery(t *testing.T) {
	queries := buildAccountDiscoverQueries("轉職", "想找語錄", []string{"職場語錄", "支柱B"})
	if len(queries) != 1 {
		t.Fatalf("expected 1 combined query, got %d (%v)", len(queries), queries)
	}
	if !strings.Contains(queries[0], `site:threads.net`) || !strings.Contains(queries[0], `"轉職"`) {
		t.Fatalf("unexpected query: %q", queries[0])
	}
	if !strings.Contains(queries[0], "想找語錄") || !strings.Contains(queries[0], `"職場語錄"`) {
		t.Fatalf("brief/pillar hint missing from combined query: %q", queries[0])
	}
}