#include <catch2/catch.hpp>

#include "libslic3r/PrintConfig.hpp"
#include "libslic3r/LocalesUtils.hpp"

#include <cereal/types/polymorphic.hpp>
#include <cereal/types/string.hpp> 
#include <cereal/types/vector.hpp> 
#include <cereal/archives/binary.hpp>

using namespace Slic3r;

SCENARIO("Generic config validation performs as expected.", "[Config]") {
    GIVEN("A config generated from default options") {
        Slic3r::DynamicPrintConfig config = Slic3r::DynamicPrintConfig::full_print_config();
        WHEN( "perimeter_extrusion_width is set to 250%, a valid value") {
            config.set_deserialize_strict("perimeter_extrusion_width", "250%");
            THEN( "The config is read as valid.") {
                REQUIRE(config.validate().empty());
            }
        }
        WHEN( "perimeter_extrusion_width is set to -10, an invalid value") {
            config.set("perimeter_extrusion_width", -10);
            THEN( "Validate returns error") {
                REQUIRE(! config.validate().empty());
            }
        }

        WHEN( "perimeters is set to -10, an invalid value") {
            config.set("perimeters", -10);
            THEN( "Validate returns error") {
                REQUIRE(! config.validate().empty());
            }
        }
    }
}

SCENARIO("Config accessor functions perform as expected.", "[Config]") {
    GIVEN("A config generated from default options") {
        Slic3r::DynamicPrintConfig config = Slic3r::DynamicPrintConfig::full_print_config();
        WHEN("A boolean option is set to a boolean value") {
            REQUIRE_NOTHROW(config.set("gcode_comments", true));
            THEN("The underlying value is set correctly.") {
                REQUIRE(config.opt<ConfigOptionBool>("gcode_comments")->getBool() == true);
            }
        }
        WHEN("A boolean option is set to a string value representing a 0 or 1") {
            CHECK_NOTHROW(config.set_deserialize_strict("gcode_comments", "1"));
            THEN("The underlying value is set correctly.") {
                REQUIRE(config.opt<ConfigOptionBool>("gcode_comments")->getBool() == true);
            }
        }
        WHEN("A boolean option is set to a string value representing something other than 0 or 1") {
            THEN("A BadOptionTypeException exception is thrown.") {
                REQUIRE_THROWS_AS(config.set("gcode_comments", "Z"), BadOptionTypeException);
            }
            AND_THEN("Value is unchanged.") {
                REQUIRE(config.opt<ConfigOptionBool>("gcode_comments")->getBool() == false);
            }
        }
        WHEN("A boolean option is set to an int value") {
            THEN("A BadOptionTypeException exception is thrown.") {
                REQUIRE_THROWS_AS(config.set("gcode_comments", 1), BadOptionTypeException);
            }
        }
        WHEN("A numeric option is set from serialized string") {
            config.set_deserialize_strict("bed_temperature", "100");
            THEN("The underlying value is set correctly.") {
                REQUIRE(config.opt<ConfigOptionInts>("bed_temperature")->get_at(0) == 100);
            }
        }
#if 0
		//FIXME better design accessors for vector elements.
		WHEN("An integer-based option is set through the integer interface") {
            config.set("bed_temperature", 100);
            THEN("The underlying value is set correctly.") {
                REQUIRE(config.opt<ConfigOptionInts>("bed_temperature")->get_at(0) == 100);
            }
        }
#endif
        WHEN("An floating-point option is set through the integer interface") {
            config.set("perimeter_speed", 10);
            THEN("The underlying value is set correctly.") {
                REQUIRE(config.opt<ConfigOptionFloat>("perimeter_speed")->getFloat() == 10.0);
            }
        }
        WHEN("A floating-point option is set through the double interface") {
            config.set("perimeter_speed", 5.5);
            THEN("The underlying value is set correctly.") {
                REQUIRE(config.opt<ConfigOptionFloat>("perimeter_speed")->getFloat() == 5.5);
            }
        }
        WHEN("An integer-based option is set through the double interface") {
            THEN("A BadOptionTypeException exception is thrown.") {
                REQUIRE_THROWS_AS(config.set("bed_temperature", 5.5), BadOptionTypeException);
            }
        }
        WHEN("A numeric option is set to a non-numeric value.") {
            THEN("A BadOptionTypeException exception is thown.") {
                REQUIRE_THROWS_AS(config.set_deserialize_strict("perimeter_speed", "zzzz"), BadOptionValueException);
            }
            THEN("The value does not change.") {
                REQUIRE(config.opt<ConfigOptionFloat>("perimeter_speed")->getFloat() == 60.0);
            }
        }
        WHEN("A string option is set through the string interface") {
            config.set("end_gcode", "100");
            THEN("The underlying value is set correctly.") {
                REQUIRE(config.opt<ConfigOptionString>("end_gcode")->value == "100");
            }
        }
        WHEN("A string option is set through the integer interface") {
            config.set("end_gcode", 100);
            THEN("The underlying value is set correctly.") {
                REQUIRE(config.opt<ConfigOptionString>("end_gcode")->value == "100");
            }
        }
        WHEN("A string option is set through the double interface") {
            config.set("end_gcode", 100.5);
            THEN("The underlying value is set correctly.") {
                REQUIRE(config.opt<ConfigOptionString>("end_gcode")->value == float_to_string_decimal_point(100.5));
            }
        }
        WHEN("A float or percent is set as a percent through the string interface.") {
            config.set_deserialize_strict("first_layer_extrusion_width", "100%");
            THEN("Value and percent flag are 100/true") {
                auto tmp = config.opt<ConfigOptionFloatOrPercent>("first_layer_extrusion_width");
                REQUIRE(tmp->percent == true);
                REQUIRE(tmp->value == 100);
            }
        }
        WHEN("A float or percent is set as a float through the string interface.") {
            config.set_deserialize_strict("first_layer_extrusion_width", "100");
            THEN("Value and percent flag are 100/false") {
                auto tmp = config.opt<ConfigOptionFloatOrPercent>("first_layer_extrusion_width");
                REQUIRE(tmp->percent == false);
                REQUIRE(tmp->value == 100);
            }
        }
        WHEN("A float or percent is set as a float through the int interface.") {
            config.set("first_layer_extrusion_width", 100);
            THEN("Value and percent flag are 100/false") {
                auto tmp = config.opt<ConfigOptionFloatOrPercent>("first_layer_extrusion_width");
                REQUIRE(tmp->percent == false);
                REQUIRE(tmp->value == 100);
            }
        }
        WHEN("A float or percent is set as a float through the double interface.") {
            config.set("first_layer_extrusion_width", 100.5);
            THEN("Value and percent flag are 100.5/false") {
                auto tmp = config.opt<ConfigOptionFloatOrPercent>("first_layer_extrusion_width");
                REQUIRE(tmp->percent == false);
                REQUIRE(tmp->value == 100.5);
            }
        }
        WHEN("An invalid option is requested during set.") {
            THEN("A BadOptionTypeException exception is thrown.") {
                REQUIRE_THROWS_AS(config.set("deadbeef_invalid_option", 1), UnknownOptionException);
                REQUIRE_THROWS_AS(config.set("deadbeef_invalid_option", 1.0), UnknownOptionException);
                REQUIRE_THROWS_AS(config.set("deadbeef_invalid_option", "1"), UnknownOptionException);
                REQUIRE_THROWS_AS(config.set("deadbeef_invalid_option", true), UnknownOptionException);
            }
        }

        WHEN("An invalid option is requested during get.") {
            THEN("A UnknownOptionException exception is thrown.") {
                REQUIRE_THROWS_AS(config.option_throw<ConfigOptionString>("deadbeef_invalid_option", false), UnknownOptionException);
                REQUIRE_THROWS_AS(config.option_throw<ConfigOptionFloat>("deadbeef_invalid_option", false), UnknownOptionException);
                REQUIRE_THROWS_AS(config.option_throw<ConfigOptionInt>("deadbeef_invalid_option", false), UnknownOptionException);
                REQUIRE_THROWS_AS(config.option_throw<ConfigOptionBool>("deadbeef_invalid_option", false), UnknownOptionException);
            }
        }
        WHEN("An invalid option is requested during opt.") {
            THEN("A UnknownOptionException exception is thrown.") {
                REQUIRE_THROWS_AS(config.option_throw<ConfigOptionString>("deadbeef_invalid_option", false), UnknownOptionException);
                REQUIRE_THROWS_AS(config.option_throw<ConfigOptionFloat>("deadbeef_invalid_option", false), UnknownOptionException);
                REQUIRE_THROWS_AS(config.option_throw<ConfigOptionInt>("deadbeef_invalid_option", false), UnknownOptionException);
                REQUIRE_THROWS_AS(config.option_throw<ConfigOptionBool>("deadbeef_invalid_option", false), UnknownOptionException);
            }
        }

        WHEN("getX called on an unset option.") {
            THEN("The default is returned.") {
                REQUIRE(config.opt_float("layer_height") == 0.3);
                REQUIRE(config.opt_int("raft_layers") == 0);
                REQUIRE(config.opt_bool("support_material") == false);
            }
        }

        WHEN("getFloat called on an option that has been set.") {
            config.set("layer_height", 0.5);
            THEN("The set value is returned.") {
                REQUIRE(config.opt_float("layer_height") == 0.5);
            }
        }
    }
}

SCENARIO("Config ini load/save interface", "[Config]") {
    WHEN("new_from_ini is called") {
		Slic3r::DynamicPrintConfig config;
		std::string path = std::string(TEST_DATA_DIR) + "/test_config/new_from_ini.ini";
		config.load_from_ini(path, ForwardCompatibilitySubstitutionRule::Disable);
        THEN("Config object contains ini file options.") {
			REQUIRE(config.option_throw<ConfigOptionStrings>("filament_colour", false)->values.size() == 1);
			REQUIRE(config.option_throw<ConfigOptionStrings>("filament_colour", false)->values.front() == "#ABCD");
        }
    }
}

SCENARIO("DynamicPrintConfig serialization", "[Config]") {
    WHEN("DynamicPrintConfig is serialized and deserialized") {
        FullPrintConfig full_print_config;
        DynamicPrintConfig cfg;
        cfg.apply(full_print_config, false);

        std::string serialized;
        try {
            std::ostringstream ss;
            cereal::BinaryOutputArchive oarchive(ss);
            oarchive(cfg);
            serialized = ss.str();
        } catch (const std::runtime_error & /* e */) {
            // e.what();
        }

        THEN("Config object contains ini file options.") {
            DynamicPrintConfig cfg2;
            try {
                std::stringstream ss(serialized);
                cereal::BinaryInputArchive iarchive(ss);
                iarchive(cfg2);
            } catch (const std::runtime_error & /* e */) {
                // e.what();
            }
            REQUIRE(cfg == cfg2);
        }
    }
}