#include <catch2/catch_all.hpp>

#include <memory>

#include "libslic3r/GCodeWriter.hpp"

using namespace Slic3r;

SCENARIO("set_speed emits values with fixed-point output.", "[GCodeWriter]") {

    GIVEN("GCodeWriter instance") {
        GCodeWriter writer;
        WHEN("set_speed is called to set speed to 99999.123") {
            THEN("Output string is G1 F99999.123") {
                REQUIRE_THAT(writer.set_speed(99999.123), Catch::Matchers::Equals("G1 F99999.123\n"));
            }
        }
        WHEN("set_speed is called to set speed to 1") {
            THEN("Output string is G1 F1") {
                REQUIRE_THAT(writer.set_speed(1.0), Catch::Matchers::Equals("G1 F1\n"));
            }
        }
        WHEN("set_speed is called to set speed to 203.200022") {
            THEN("Output string is G1 F203.2") {
                REQUIRE_THAT(writer.set_speed(203.200022), Catch::Matchers::Equals("G1 F203.2\n"));
            }
        }
        WHEN("set_speed is called to set speed to 203.200522") {
            THEN("Output string is G1 F203.201") {
                REQUIRE_THAT(writer.set_speed(203.200522), Catch::Matchers::Equals("G1 F203.201\n"));
            }
        }
    }
}

SCENARIO("z_hop lifts the nozzle when a lift is requested", "[GCodeWriter]") {
    GIVEN("A writer with the nozzle parked at Z = 10") {
        GCodeWriter writer;
        std::vector<unsigned int> extruder_ids { 0 };
        writer.set_extruders(extruder_ids);
        writer.set_extruder(0);
        writer.travel_to_z(10.0);

        WHEN("z_hop is 1 and an eager lift is requested") {
            writer.config.z_hop.values = { 1.0 };
            std::string gcode = writer.eager_lift(LiftType::NormalLift);
            THEN("a Z move up by z_hop is emitted") {
                REQUIRE_THAT(gcode, Catch::Matchers::ContainsSubstring("Z11"));
            }
        }
        WHEN("z_hop is 0") {
            writer.config.z_hop.values = { 0.0 };
            std::string gcode = writer.eager_lift(LiftType::NormalLift);
            THEN("no lift is emitted") {
                REQUIRE(gcode.empty());
            }
        }
    }
}