#include "skyextensions.hpp"

#include <algorithm>

#include <components/compiler/opcodes.hpp>

#include <components/interpreter/interpreter.hpp>
#include <components/interpreter/runtime.hpp>
#include <components/interpreter/opcodes.hpp>

#include "../mwbase/environment.hpp"
#include "../mwbase/world.hpp"

#include "../mwworld/esmstore.hpp"

#include "interpretercontext.hpp"

namespace MWScript
{
    namespace Sky
    {
        class OpToggleSky : public Interpreter::Opcode0
        {
            public:

                void execute (Interpreter::Runtime& runtime) override
                {
                    bool enabled = MWBase::Environment::get().getWorld()->toggleSky();

                    runtime.getContext().report (enabled ? "Sky -> On" : "Sky -> Off");
                }
        };

        class OpTurnMoonWhite : public Interpreter::Opcode0
        {
            public:

                void execute (Interpreter::Runtime& runtime) override
                {
                    MWBase::Environment::get().getWorld()->setMoonColour (false);
                }
        };

        class OpTurnMoonRed : public Interpreter::Opcode0
        {
            public:

                void execute (Interpreter::Runtime& runtime) override
                {
                    MWBase::Environment::get().getWorld()->setMoonColour (true);
                }
        };

        class OpGetMasserPhase : public Interpreter::Opcode0
        {
            public:

                void execute (Interpreter::Runtime& runtime) override
                {
                    runtime.push (MWBase::Environment::get().getWorld()->getMasserPhase());
                }
        };

        class OpGetSecundaPhase : public Interpreter::Opcode0
        {
            public:

                void execute (Interpreter::Runtime& runtime) override
                {
                    runtime.push (MWBase::Environment::get().getWorld()->getSecundaPhase());
                }
        };

        class OpGetCurrentWeather : public Interpreter::Opcode0
        {
            public:

                void execute (Interpreter::Runtime& runtime) override
                {
                    runtime.push (MWBase::Environment::get().getWorld()->getCurrentWeather());
                }
        };

        class OpChangeWeather : public Interpreter::Opcode0
        {
            public:

                void execute (Interpreter::Runtime& runtime) override
                {
                    std::string_view region{runtime.getStringLiteral(runtime[0].mInteger)};
                    runtime.pop();

                    Interpreter::Type_Integer id = runtime[0].mInteger;
                    runtime.pop();

                    const ESM::Region* reg = MWBase::Environment::get().getWorld()->getStore().get<ESM::Region>().search(region);
                    if (reg)
                        MWBase::Environment::get().getWorld()->changeWeather(region, id);
                    else
                        runtime.getContext().report("Warning: Region \"" + std::string(region) + "\" was not found");
                }
        };

        class OpModRegion : public Interpreter::Opcode1
        {
            public:

                void execute (Interpreter::Runtime& runtime, unsigned int arg0) override
                {
                    std::string_view region{runtime.getStringLiteral(runtime[0].mInteger)};
                    runtime.pop();

                    std::vector<char> chances;
                    chances.reserve(10);
                    while(arg0 > 0)
                    {
                        chances.push_back(std::clamp(runtime[0].mInteger, 0, 127));
                        runtime.pop();
                        arg0--;
                    }

                    MWBase::Environment::get().getWorld()->modRegion(region, chances);
                }
        };


        void installOpcodes (Interpreter::Interpreter& interpreter)
        {
            interpreter.installSegment5<OpToggleSky>(Compiler::Sky::opcodeToggleSky);
            interpreter.installSegment5<OpTurnMoonWhite>(Compiler::Sky::opcodeTurnMoonWhite);
            interpreter.installSegment5<OpTurnMoonRed>(Compiler::Sky::opcodeTurnMoonRed);
            interpreter.installSegment5<OpGetMasserPhase>(Compiler::Sky::opcodeGetMasserPhase);
            interpreter.installSegment5<OpGetSecundaPhase>(Compiler::Sky::opcodeGetSecundaPhase);
            interpreter.installSegment5<OpGetCurrentWeather>(Compiler::Sky::opcodeGetCurrentWeather);
            interpreter.installSegment5<OpChangeWeather>(Compiler::Sky::opcodeChangeWeather);
            interpreter.installSegment3<OpModRegion>(Compiler::Sky::opcodeModRegion);
        }
    }
}