#pragma once

#include "../../Result.hpp"
#include "../../types.hpp"
#include "../../utils.hpp"
#include <vector>
#include <stdexcept>

namespace amalgine
{
    class CompiledVertexShader;
    class CompiledPixelShader;
    
    class ShaderProgramUsedBeforeBuilt : public std::runtime_error
    {
    public:
        // TODO: Add name to ShaderProgram so we know which shader has issue when
        // an exception is thrown?
        ShaderProgramUsedBeforeBuilt();
    };
    
    class ShaderProgram
    {
        DISABLE_COPY(ShaderProgram)
    public:
        ShaderProgram();
        ~ShaderProgram();
        
        bool setVertexShader(CompiledVertexShader *vertexShader);
        bool setPixelShader(CompiledPixelShader *pixelShader);
        
        Result<bool> build();
        void use();
    private:
        u32 shaderProgramId;
        bool built;
    };
}