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#include "gtest/gtest.h"
#include "gmock/gmock-matchers.h"
#include "gtest-qt-printing.h"

#include <codecompleter.h>
#include <filecontainer.h>
#include <translationunit.h>
#include <unsavedfiles.h>
#include <utf8stringvector.h>
#include <projectpart.h>

#include <QFile>


using ::testing::ElementsAreArray;
using ::testing::Contains;
using ::testing::AllOf;
using ::testing::Not;

using CodeModelBackEnd::CodeCompletion;
using CodeModelBackEnd::CodeCompleter;

namespace {

class CodeCompleter : public ::testing::Test
{
public:
    static void SetUpTestCase();
    static void TearDownTestCase();

protected:
    static CodeModelBackEnd::ProjectPart projectPart;
    static CodeModelBackEnd::UnsavedFiles unsavedFiles;
    static CodeModelBackEnd::TranslationUnit translationUnit;
    static CodeModelBackEnd::CodeCompleter completer;
};

CodeModelBackEnd::ProjectPart CodeCompleter::projectPart(Utf8StringLiteral("projectPartId"));
CodeModelBackEnd::UnsavedFiles CodeCompleter::unsavedFiles;
CodeModelBackEnd::TranslationUnit CodeCompleter::translationUnit(Utf8StringLiteral(TESTDATA_DIR"/complete_completer.cpp"), unsavedFiles, projectPart);
CodeModelBackEnd::CodeCompleter CodeCompleter::completer = translationUnit;

void CodeCompleter::SetUpTestCase()
{
    QFile unsavedFileContentFile(QStringLiteral(TESTDATA_DIR) + QStringLiteral("/complete_completer_unsaved.cpp"));
    unsavedFileContentFile.open(QIODevice::ReadOnly);

    const Utf8String unsavedFileContent = Utf8String::fromByteArray(unsavedFileContentFile.readAll());
    const CodeModelBackEnd::FileContainer unsavedDataFileContainer(translationUnit.filePath(),
                                                                   projectPart.projectPartId(),
                                                                   unsavedFileContent,
                                                                   true);

    unsavedFiles.createOrUpdate({unsavedDataFileContainer});
}

void CodeCompleter::TearDownTestCase()
{
    translationUnit.reset();
    completer = CodeModelBackEnd::CodeCompleter();
}


TEST_F(CodeCompleter, FunctionInUnsavedFile)
{
    ASSERT_THAT(completer.complete(100, 1),
                AllOf(Contains(CodeCompletion(Utf8StringLiteral("functionWithArguments"),
                                              Utf8String(),
                                              Utf8String(),
                                              0,
                                              CodeCompletion::FunctionCompletionKind)),
                      Contains(CodeCompletion(Utf8StringLiteral("function"),
                                              Utf8String(),
                                              Utf8String(),
                                              0,
                                              CodeCompletion::FunctionCompletionKind)),
                      Contains(CodeCompletion(Utf8StringLiteral("newFunction"),
                                              Utf8String(),
                                              Utf8String(),
                                              0,
                                              CodeCompletion::FunctionCompletionKind)),
                      Contains(CodeCompletion(Utf8StringLiteral("f"),
                                              Utf8String(),
                                              Utf8String(),
                                              0,
                                              CodeCompletion::FunctionCompletionKind)),
                      Not(Contains(CodeCompletion(Utf8StringLiteral("otherFunction"),
                                                  Utf8String(),
                                                  Utf8String(),
                                                  0,
                                                  CodeCompletion::FunctionCompletionKind)))));
}


TEST_F(CodeCompleter, Macro)
{
    ASSERT_THAT(completer.complete(100, 1),
                Contains(CodeCompletion(Utf8StringLiteral("Macro"),
                                              Utf8String(),
                                              Utf8String(),
                                              0,
                                              CodeCompletion::PreProcessorCompletionKind)));
}

TEST_F(CodeCompleter, Keyword)
{
    ASSERT_THAT(completer.complete(100, 1),
                Contains(CodeCompletion(Utf8StringLiteral("switch"),
                                              Utf8String(),
                                              Utf8String(),
                                              0,
                                              CodeCompletion::KeywordCompletionKind)));
}


}