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#include "base/string_util.h"
#include "chrome/browser/printing/page_overlays.h"
#include "chrome/browser/printing/print_settings.h"
#include "chrome/browser/printing/printed_document.h"
#include "chrome/browser/printing/printed_page.h"
#include "chrome/browser/printing/printed_pages_source.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace {

struct Keys {
  const wchar_t* key;
  const wchar_t* expected;
};

const Keys kOverlayKeys[] = {
  printing::PageOverlays::kTitle, L"Foobar Document",
  printing::PageOverlays::kTime, L"",
  printing::PageOverlays::kDate, L"",
  printing::PageOverlays::kPage, L"1",
  printing::PageOverlays::kPageCount, L"2",
  printing::PageOverlays::kPageOnTotal, L"1/2",
  printing::PageOverlays::kUrl, L"http://www.perdu.com/",
};

class PagesSource : public printing::PrintedPagesSource {
 public:
  virtual void RenderOnePrintedPage(printing::PrintedDocument* document,
                                    int page_number) {
    NOTREACHED();
  }

  virtual std::wstring RenderSourceName() {
    return L"Foobar Document";
  }

  virtual GURL RenderSourceUrl() {
    return GURL(L"http://www.perdu.com");
  }
};

}  // namespace


TEST(PageOverlaysTest, StringConversion) {
  printing::PageOverlays overlays;
  overlays.GetOverlay(printing::PageOverlays::LEFT,
                      printing::PageOverlays::BOTTOM);
  printing::PrintSettings settings;
  PagesSource source;
  int cookie = 1;
  scoped_refptr<printing::PrintedDocument> doc(
      new printing::PrintedDocument(settings, &source, cookie));
  doc->set_page_count(2);
  gfx::Size page_size(100, 100);
  scoped_refptr<printing::PrintedPage> page(
      new printing::PrintedPage(1, NULL, page_size));

  std::wstring input;
  std::wstring out;
  for (int i = 0; i < arraysize(kOverlayKeys); ++i) {
    input = StringPrintf(L"foo%sbar", kOverlayKeys[i].key);
    out = printing::PageOverlays::ReplaceVariables(input, *doc.get(),
                                                   *page.get());
    EXPECT_FALSE(out.empty());
    if (wcslen(kOverlayKeys[i].expected) == 0)
      continue;
    EXPECT_EQ(StringPrintf(L"foo%lsbar", kOverlayKeys[i].expected), out) <<
        kOverlayKeys[i].key;
  }
}