#ifndef PATH_GLSL_FILES_H
#define PATH_GLSL_FILES_H

static void setShaderPaths(int task,
	std::vector<std::string>& all_paths,
	std::vector<std::string>& vertex_shader_paths,
	std::vector<std::string>& tess_control_shader_paths,
	std::vector<std::string>& tess_evaluation_shader_paths,
	std::vector<std::string>& fragment_shader_paths) {

	if (task == 0) {
		vertex_shader_paths = {
			"/glsl/pass-through.vs"
		};

		tess_control_shader_paths = {
			"/glsl/pass-through.tcs"
		};
		tess_evaluation_shader_paths = {
			"/glsl/interpolate.glsl",
			"/glsl/pass-through.tes"
		};
		fragment_shader_paths = {
			"/glsl/pass-through.fs"
		};
	}
	else if (task == 1) {
		vertex_shader_paths = {
			"/glsl/PI.glsl",
			"/src/1_identity.glsl",
			"/src/1_uniform_scale.glsl",
			"/src/1_translate.glsl",
			"/src/1_rotate_about_y.glsl",
			"/src/1_model.glsl",
			"/src/1_model_view_projection.vs",
		};

		tess_control_shader_paths = {
			"/glsl/pass-through.tcs",
		};
		tess_evaluation_shader_paths = {
			"/glsl/interpolate.glsl",
			"/glsl/pass-through.tes",
		};
		fragment_shader_paths = {
			"/src/1_blue_and_gray.fs",
		};
	}
	else if (task == 2) {
		vertex_shader_paths = {
			"/glsl/PI.glsl",
			"/src/1_identity.glsl",
			"/src/1_uniform_scale.glsl",
			"/src/1_translate.glsl",
			"/src/1_rotate_about_y.glsl",
			"/src/1_model.glsl",
			"/src/1_model_view_projection.vs",
		};

		tess_control_shader_paths = {
			"/src/2_tessellate_5.tcs",
		};
		tess_evaluation_shader_paths = {
			"/glsl/interpolate.glsl",
			"/glsl/pass-through.tes",
		};
		fragment_shader_paths = {
			"/src/1_blue_and_gray.fs",
		};
	}
	else if (task == 3) {
		vertex_shader_paths = {
			"/glsl/pass-through.vs"
		};

		tess_control_shader_paths = {
			"/src/2_tessellate_5.tcs",
		};
		tess_evaluation_shader_paths = {
			"/glsl/PI.glsl",
			"/src/1_identity.glsl",
			"/src/1_uniform_scale.glsl",
			"/src/1_translate.glsl",
			"/src/1_rotate_about_y.glsl",
			"/glsl/interpolate.glsl",
			"/src/1_model.glsl",
			"/src/3_snap_to_sphere.tes",
		};
		fragment_shader_paths = {
			"/src/1_blue_and_gray.fs",
		};
	}
	else if (task == 4) {
		vertex_shader_paths = {
			"/glsl/pass-through.vs"
		};

		tess_control_shader_paths = {
			"/src/2_tessellate_5.tcs",
		};
		tess_evaluation_shader_paths = {
			"/glsl/PI.glsl",
			"/src/1_identity.glsl",
			"/src/1_uniform_scale.glsl",
			"/src/1_translate.glsl",
			"/src/1_rotate_about_y.glsl",
			"/glsl/interpolate.glsl",
			"/src/1_model.glsl",
			"/src/3_snap_to_sphere.tes",
		};
		fragment_shader_paths = {
			"/glsl/PI.glsl",
			"/src/4_blinn_phong.glsl",
			"/src/4_lit.fs",
		};
	}
	else if (task == 5) {
		vertex_shader_paths = {
			"/glsl/pass-through.vs"
		};

		tess_control_shader_paths = {
			"/src/2_tessellate_5.tcs",
		};
		tess_evaluation_shader_paths = {
			"/glsl/PI.glsl",
			"/src/1_identity.glsl",
			"/src/1_uniform_scale.glsl",
			"/src/1_translate.glsl",
			"/src/1_rotate_about_y.glsl",
			"/glsl/interpolate.glsl",
			"/src/1_model.glsl",
			"/src/3_snap_to_sphere.tes",
		};
		fragment_shader_paths = {
			"/glsl/PI.glsl",
			"/glsl/random2.glsl",
			"/src/5_random_direction.glsl",
			"/src/5_smooth_step.glsl",
			"/src/5_perlin_noise.glsl",
			"/src/4_blinn_phong.glsl",
			"/src/5_procedural_color.fs",
		};
	}
	else if (task == 6) {
		vertex_shader_paths = {
			"/glsl/pass-through.vs"
		};

		tess_control_shader_paths = {
			"/src/2_tessellate_5.tcs",
		};
		tess_evaluation_shader_paths = {
			"/glsl/PI.glsl",
			"/src/1_identity.glsl",
			"/src/1_uniform_scale.glsl",
			"/src/1_translate.glsl",
			"/src/1_rotate_about_y.glsl",
			"/glsl/interpolate.glsl",
			"/src/1_model.glsl",
			"/src/3_snap_to_sphere.tes",
		};
		fragment_shader_paths = {
			"/glsl/PI.glsl",
			"/src/1_identity.glsl",
			"/src/1_uniform_scale.glsl",
			"/src/1_translate.glsl",
			"/src/1_rotate_about_y.glsl",
			"/glsl/interpolate.glsl",
			"/src/1_model.glsl",
			"/glsl/random2.glsl",
			"/src/5_random_direction.glsl",
			"/src/5_smooth_step.glsl",
			"/src/5_perlin_noise.glsl",
			"/src/4_blinn_phong.glsl",
			"/glsl/smooth_heaviside.glsl",
			"/glsl/bump_height.glsl",
			"/src/6_bump_position.glsl",
			"/src/6_tangent.glsl",
			"/src/6_bump.fs",
		};
	}
	else if (task == 7) {
		vertex_shader_paths = {
			"/glsl/pass-through.vs"
		};

		tess_control_shader_paths = {
			"/src/2_tessellate_5.tcs",
		};
		tess_evaluation_shader_paths = {
			"/glsl/PI.glsl",
			"/src/1_identity.glsl",
			"/src/1_uniform_scale.glsl",
			"/src/1_translate.glsl",
			"/src/1_rotate_about_y.glsl",
			"/glsl/interpolate.glsl",
			"/src/1_model.glsl",
			"/src/3_snap_to_sphere.tes",
		};
		fragment_shader_paths = {
			"/glsl/PI.glsl",
			"/src/1_identity.glsl",
			"/src/1_uniform_scale.glsl",
			"/src/1_translate.glsl",
			"/src/1_rotate_about_y.glsl",
			"/glsl/interpolate.glsl",
			"/src/1_model.glsl",
			"/glsl/random2.glsl",
			"/src/5_random_direction.glsl",
			"/src/5_smooth_step.glsl",
			"/src/5_perlin_noise.glsl",
			"/src/4_blinn_phong.glsl",
			"/glsl/smooth_heaviside.glsl",
			"/glsl/bump_height.glsl",
			"/src/6_bump_position.glsl",
			"/src/6_tangent.glsl",
			"/src/7_planet.fs",
		};
	}

	// Print to command line
	std::cout << "==== Used glsl files: ====" << std::endl;
	std::cout << "  vertex:" << std::endl;
	for (auto& s : vertex_shader_paths) {
		std::cout << "        " << s << std::endl;
	}
	std::cout << "  tessellation control:" << std::endl;
	for (auto& s : tess_control_shader_paths) {
		std::cout << "        " << s << std::endl;
	}
	std::cout << "  tessellation evaluation:" << std::endl;
	for (auto& s : tess_evaluation_shader_paths) {
		std::cout << "        " << s << std::endl;
	}
	std::cout << "  fragment:" << std::endl;
	for (auto& s : fragment_shader_paths) {
		std::cout << "        " << s << std::endl;
	}
	std::cout << "==========================" << std::endl;

	// Add cmakelists_dir (from main.cpp)
	for (std::string& s : vertex_shader_paths) {
		s = cmakelists_dir + s;
	}
	for (std::string& s : tess_control_shader_paths) {
		s = cmakelists_dir + s;
	}
	for (std::string& s : tess_evaluation_shader_paths) {
		s = cmakelists_dir + s;
	}
	for (std::string& s : fragment_shader_paths) {
		s = cmakelists_dir + s;
	}

	// Add "/glsl/version410.glsl" to the beginning of each vector
	vertex_shader_paths.insert(vertex_shader_paths.begin(), cmakelists_dir + "/glsl/version410.glsl");
	tess_control_shader_paths.insert(tess_control_shader_paths.begin(), cmakelists_dir + "/glsl/version410.glsl");
	tess_evaluation_shader_paths.insert(tess_evaluation_shader_paths.begin(), cmakelists_dir + "/glsl/version410.glsl");
	fragment_shader_paths.insert(fragment_shader_paths.begin(), cmakelists_dir + "/glsl/version410.glsl");

	// Concatenate into one vector
	all_paths.insert(all_paths.end(), vertex_shader_paths.begin(), vertex_shader_paths.end());
	all_paths.insert(all_paths.end(), tess_control_shader_paths.begin(), tess_control_shader_paths.end());
	all_paths.insert(all_paths.end(), tess_evaluation_shader_paths.begin(), tess_evaluation_shader_paths.end());
	all_paths.insert(all_paths.end(), fragment_shader_paths.begin(), fragment_shader_paths.end());
}

#endif