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#include "googletest.h"
#include "mocksqlitedatabase.h"

#include <precompiledheaderstorage.h>
#include <refactoringdatabaseinitializer.h>
#include <sqlitedatabase.h>
#include <sqlitewritestatement.h>
#include <sqlitetransaction.h>

namespace  {

using Storage = ClangPchManager::PrecompiledHeaderStorage<NiceMock<MockSqliteDatabase>>;

class PrecompiledHeaderStorage : public testing::Test
{
protected:
    NiceMock<MockSqliteDatabase> database;
    Storage storage{database};
    MockSqliteWriteStatement &insertPrecompiledHeaderStatement  = storage.m_insertPrecompiledHeaderStatement;
    MockSqliteWriteStatement &insertProjectPartStatement = storage.m_insertProjectPartStatement;
    MockSqliteWriteStatement &deletePrecompiledHeaderStatement  = storage.m_deletePrecompiledHeaderStatement;
};

TEST_F(PrecompiledHeaderStorage, UseTransaction)
{
    InSequence s;

    EXPECT_CALL(database, immediateBegin());
    EXPECT_CALL(database, commit());

    Storage storage{database};
}

TEST_F(PrecompiledHeaderStorage, InsertPrecompiledHeader)
{
    InSequence s;

    EXPECT_CALL(database, immediateBegin());
    EXPECT_CALL(insertProjectPartStatement, write(TypedEq<Utils::SmallStringView>("project1")));
    EXPECT_CALL(insertPrecompiledHeaderStatement,
                write(TypedEq<Utils::SmallStringView>("project1"),
                      TypedEq<Utils::SmallStringView>("/path/to/pch"),
                      TypedEq<long long>(22)));
    EXPECT_CALL(database, commit());

    storage.insertPrecompiledHeader("project1", "/path/to/pch", 22);
}

TEST_F(PrecompiledHeaderStorage, InsertPrecompiledHeaderStatementIsBusy)
{
    InSequence s;

    EXPECT_CALL(database, immediateBegin()).WillOnce(Throw(Sqlite::StatementIsBusy("busy")));
    EXPECT_CALL(database, immediateBegin());
    EXPECT_CALL(insertProjectPartStatement, write(TypedEq<Utils::SmallStringView>("project1")));
    EXPECT_CALL(insertPrecompiledHeaderStatement,
                write(TypedEq<Utils::SmallStringView>("project1"),
                      TypedEq<Utils::SmallStringView>("/path/to/pch"),
                      TypedEq<long long>(22)));
    EXPECT_CALL(database, commit());

    storage.insertPrecompiledHeader("project1", "/path/to/pch", 22);
}

TEST_F(PrecompiledHeaderStorage, DeletePrecompiledHeader)
{
    InSequence s;

    EXPECT_CALL(database, immediateBegin());
    EXPECT_CALL(deletePrecompiledHeaderStatement, write(TypedEq<Utils::SmallStringView>("project1")));
    EXPECT_CALL(database, commit());

    storage.deletePrecompiledHeader("project1");
}

TEST_F(PrecompiledHeaderStorage, DeletePrecompiledHeaderStatementIsBusy)
{
    InSequence s;

    EXPECT_CALL(database, immediateBegin()).WillOnce(Throw(Sqlite::StatementIsBusy("busy")));
    EXPECT_CALL(database, immediateBegin());
    EXPECT_CALL(deletePrecompiledHeaderStatement, write(TypedEq<Utils::SmallStringView>("project1")));
    EXPECT_CALL(database, commit());

    storage.deletePrecompiledHeader("project1");
}

TEST_F(PrecompiledHeaderStorage, InsertPrecompiledHeaderStatement)
{
    ASSERT_THAT(insertPrecompiledHeaderStatement.sqlStatement,
                Eq("INSERT OR REPLACE INTO precompiledHeaders(projectPartId, pchPath, pchBuildTime) VALUES((SELECT projectPartId FROM projectParts WHERE projectPartName = ?),?,?)"));
}

TEST_F(PrecompiledHeaderStorage, InsertProjectPartStatement)
{
    ASSERT_THAT(insertProjectPartStatement.sqlStatement,
                Eq("INSERT OR IGNORE INTO projectParts(projectPartName) VALUES (?)"));
}

TEST_F(PrecompiledHeaderStorage, DeletePrecompiledHeaderStatement)
{
    ASSERT_THAT(deletePrecompiledHeaderStatement.sqlStatement,
                Eq("DELETE FROM precompiledHeaders WHERE projectPartId = (SELECT projectPartId FROM projectParts WHERE projectPartName = ?)"));
}

TEST_F(PrecompiledHeaderStorage, CompilePrecompiledHeaderStatements)
{
    Sqlite::Database database{":memory:", Sqlite::JournalMode::Memory};
    ClangBackEnd::RefactoringDatabaseInitializer<Sqlite::Database> initializer{database};

    ASSERT_NO_THROW(ClangPchManager::PrecompiledHeaderStorage<>{database});
}

}