#define BOOST_TEST_MODULE DbConnection
#include <boost/test/unit_test.hpp>

#include <factory.h>
#include <connection.h>
#include <definedDirs.h>
#include <fstream>
#include <vector>
#include <error.h>
#include <sqlParse.h>

using SQLs = std::vector<std::string>;
BOOST_TEST_SPECIALIZED_COLLECTION_COMPARE(SQLs);

class RecordingParser : std::fstream, public DB::SqlParse {
	public:
		explicit RecordingParser(const std::filesystem::path & p) :
			std::fstream(p),
			DB::SqlParse(*this, p.parent_path())
		{
		}

    void Comment(const std::string & c) const override
		{
			comments.push_back(c);
		}

    void Statement(const std::string & s) const override
		{
			executed.push_back(s);
		}

		mutable SQLs comments;
		mutable SQLs executed;
};

template<typename E = DB::SqlParseException>
void assertFail(const std::filesystem::path & p)
{
	BOOST_TEST_CONTEXT(p) {
		BOOST_REQUIRE_THROW({
			RecordingParser s(p);
			s.Execute();
		}, E);
	}
}

BOOST_AUTO_TEST_CASE( parseBad )
{
	assertFail("/bad");
}

BOOST_AUTO_TEST_CASE( parse )
{
	RecordingParser p(rootDir / "parseTest.sql");
	p.Execute();
	BOOST_REQUIRE_EQUAL(p.executed.size(), 3);
	BOOST_REQUIRE_EQUAL(p.executed[1], "INSERT INTO name(t, i) VALUES('string', 3)");
	auto cs = {
		"Single line comment",
		"",
		"",
		"",
		"",
		"Comment",
		"",
		"",
		"",
		"Multi line\n\t comment",
		"! Stupid MySQL terminates",
		"! comments with a ;",
		"! Because reasons",
	};
	BOOST_CHECK_EQUAL_COLLECTIONS(p.comments.begin(), p.comments.end(), cs.begin(), cs.end());
}

BOOST_AUTO_TEST_CASE( parseDollarQuote )
{
	RecordingParser p(rootDir / "dollarQuote.sql");
	p.Execute();
}

BOOST_AUTO_TEST_CASE( parseScriptDir )
{
	RecordingParser p(rootDir / "scriptDir.sql");
	p.Execute();
}

BOOST_AUTO_TEST_CASE( parseStringParse )
{
	RecordingParser p(rootDir / "stringParse.sql");
	p.Execute();
	BOOST_REQUIRE_EQUAL(2, p.executed.size());
	BOOST_REQUIRE_EQUAL("INSERT INTO name(t, i) VALUES('fancy string '' \\' \\r \\n', 7)", p.executed[1]);
}

BOOST_AUTO_TEST_CASE( indentedStatement )
{
	RecordingParser p(rootDir / "indentedStatement.sql");
	p.Execute();
	BOOST_REQUIRE_EQUAL(1, p.executed.size());
	BOOST_REQUIRE_EQUAL("SELECT 1", p.executed[0]);
	BOOST_REQUIRE(p.comments.empty());
}

BOOST_AUTO_TEST_CASE( indentedOneLineComment )
{
	RecordingParser p(rootDir / "indentedOneLineComment.sql");
	p.Execute();
	BOOST_REQUIRE_EQUAL(1, p.comments.size());
	BOOST_REQUIRE_EQUAL("Some comment text", p.comments[0]);
	BOOST_REQUIRE(p.executed.empty());
}

BOOST_AUTO_TEST_CASE( indentedBlockComment )
{
	RecordingParser p(rootDir / "indentedBlockComment.sql");
	p.Execute();
	BOOST_REQUIRE_EQUAL(1, p.comments.size());
	BOOST_REQUIRE_EQUAL("Some comment text", p.comments[0]);
	BOOST_REQUIRE(p.executed.empty());
}

BOOST_AUTO_TEST_CASE( commentsMixedIn )
{
	RecordingParser p(rootDir / "commentsMixedIn.sql");
	p.Execute();
	BOOST_REQUIRE_EQUAL(1, p.executed.size());
	BOOST_REQUIRE_EQUAL("CREATE TABLE foo(\n\t\tid int,\n\t\ttimestamp time stamp\n\t\t)", p.executed[0]);
	BOOST_REQUIRE_EQUAL(3, p.comments.size());
	BOOST_REQUIRE_EQUAL("Foo contains test things", p.comments[0]);
	BOOST_REQUIRE_EQUAL("Every table deserves an Id, right?", p.comments[1]);
	BOOST_REQUIRE_EQUAL("And a timestamp", p.comments[2]);
}

BOOST_AUTO_TEST_CASE( parseUnterminateComment )
{
	assertFail(rootDir / "unterminatedComment.sql");
}

BOOST_AUTO_TEST_CASE( parseUnterminateDollarQuote )
{
	assertFail(rootDir / "unterminatedDollarQuote.sql");
}

BOOST_AUTO_TEST_CASE( parseUnterminateString )
{
	assertFail(rootDir / "unterminatedString.sql");
}