// This is a generic plugin that does nothing useful apart from acting as an example... of a plugin that does nothing :D

// some headers required for a plugin. Nothing special, just the basics.
#include "Core.h"
#include <Console.h>
#include <Export.h>
#include <PluginManager.h>

// DF data structure definition headers
#include "DataDefs.h"
#include "df/world.h"
#include "df/ui.h"
#include "df/item.h"
#include "df/creature_raw.h"
#include "df/caste_raw.h"
#include "df/body_part_raw.h"
#include "df/historical_figure.h"

#include "df/job_item.h"
#include "df/job_material_category.h"
#include "df/dfhack_material_category.h"
#include "df/matter_state.h"
#include "df/material_vec_ref.h"
#include "df/builtin_mats.h"

#include "df/descriptor_color.h"
#include "df/descriptor_pattern.h"
#include "df/descriptor_shape.h"

#include "df/physical_attribute_type.h"
#include "df/mental_attribute_type.h"
#include <df/color_modifier_raw.h>

//DFhack specific headers
#include "modules/Maps.h"
#include "modules/MapCache.h"
#include "modules/Materials.h"
#include "TileTypes.h"

#include <vector>
#include <time.h>

#include "RemoteFortressReader.pb.h"

#include "RemoteServer.h"

using namespace DFHack;
using namespace df::enums;
using namespace RemoteFortressReader;
using namespace std;

using df::global::world;

// Here go all the command declarations...
// mostly to allow having the mandatory stuff on top of the file and commands on the bottom

static command_result GetMaterialList(color_ostream &stream, const EmptyMessage *in, MaterialList *out);
static command_result GetBlockList(color_ostream &stream, const BlockRequest *in, BlockList *out);
static command_result CheckHashes(color_ostream &stream, const EmptyMessage *in);
void CopyBlock(df::map_block * DfBlock, RemoteFortressReader::MapBlock * NetBlock);
void FindChangedBlocks();



// A plugin must be able to return its name and version.
// The name string provided must correspond to the filename - skeleton.plug.so or skeleton.plug.dll in this case
DFHACK_PLUGIN("RemoteFortressReader");

// Mandatory init function. If you have some global state, create it here.
DFhackCExport command_result plugin_init ( color_ostream &out, std::vector <PluginCommand> &commands)
{
    //// Fill the command list with your commands.
    //commands.push_back(PluginCommand(
    //    "isoworldremote", "Dump north-west embark tile to text file for debug purposes.",
    //    isoWorldRemote, false, /* true means that the command can't be used from non-interactive user interface */
    //    // Extended help string. Used by CR_WRONG_USAGE and the help command:
    //    "  This command does nothing at all.\n"
    //    "Example:\n"
    //    "  isoworldremote\n"
    //    "    Does nothing.\n"
    //));
    return CR_OK;
}

DFhackCExport RPCService *plugin_rpcconnect(color_ostream &)
{
    RPCService *svc = new RPCService();
	svc->addFunction("GetMaterialList", GetMaterialList);
	svc->addFunction("GetBlockList", GetBlockList);
	svc->addFunction("CheckHashes", CheckHashes);
    return svc;
}

// This is called right before the plugin library is removed from memory.
DFhackCExport command_result plugin_shutdown ( color_ostream &out )
{
    // You *MUST* kill all threads you created before this returns.
    // If everything fails, just return CR_FAILURE. Your plugin will be
    // in a zombie state, but things won't crash.
    return CR_OK;
}

uint16_t fletcher16(uint8_t const *data, size_t bytes)
{
	uint16_t sum1 = 0xff, sum2 = 0xff;

	while (bytes) {
		size_t tlen = bytes > 20 ? 20 : bytes;
		bytes -= tlen;
		do {
			sum2 += sum1 += *data++;
		} while (--tlen);
		sum1 = (sum1 & 0xff) + (sum1 >> 8);
		sum2 = (sum2 & 0xff) + (sum2 >> 8);
	}
	/* Second reduction step to reduce sums to 8 bits */
	sum1 = (sum1 & 0xff) + (sum1 >> 8);
	sum2 = (sum2 & 0xff) + (sum2 >> 8);
	return sum2 << 8 | sum1;
}

static command_result CheckHashes(color_ostream &stream, const EmptyMessage *in)
{
	clock_t start = clock();
	for (int i = 0; i < world->map.map_blocks.size(); i++)
	{
		df::map_block * block = world->map.map_blocks[i];
		fletcher16((uint8_t*)(block->tiletype), 16 * 16 * sizeof(df::enums::tiletype::tiletype));
	}
	clock_t end = clock();
	double elapsed_secs = double(end - start) / CLOCKS_PER_SEC;
	stream.print("Checking all hashes took %f seconds.", elapsed_secs);
	return CR_OK;
}

df::matter_state GetState(df::material * mat, uint16_t temp = 10015)
{
	df::matter_state state = matter_state::Solid;
	if (temp >= mat->heat.melting_point)
		state = df::matter_state::Liquid;
	if (temp >= mat->heat.boiling_point)
		state = matter_state::Gas;
	return state;
}

static command_result GetMaterialList(color_ostream &stream, const EmptyMessage *in, MaterialList *out)
{
	if (!Core::getInstance().isWorldLoaded()) {
		//out->set_available(false);
		return CR_OK;
	}



	df::world_raws *raws = &world->raws;
	MaterialInfo mat;
	for (int i = 0; i < raws->inorganics.size(); i++)
	{
		mat.decode(0, i);
		MaterialDefinition *mat_def = out->add_material_list();
		mat_def->mutable_mat_pair()->set_mat_index(0);
		mat_def->mutable_mat_pair()->set_mat_type(i);
		mat_def->set_id(mat.getToken());
		mat_def->set_name(mat.toString()); //find the name at cave temperature;
		if (raws->inorganics[i]->material.state_color[GetState(&raws->inorganics[i]->material)] < raws->language.colors.size())
		{
			df::descriptor_color *color = raws->language.colors[raws->inorganics[i]->material.state_color[GetState(&raws->inorganics[i]->material)]];
			mat_def->mutable_state_color()->set_red(color->red);
			mat_def->mutable_state_color()->set_green(color->green);
			mat_def->mutable_state_color()->set_blue(color->blue);
		}
	}
	for (int i = 1; i < 19; i++)
	{
		int k = 0;
		if (i == 7)
			k = 1;// for coal.
		for (int j = 0; j <= k; j++)
		{
			mat.decode(i, j);
			MaterialDefinition *mat_def = out->add_material_list();
			mat_def->mutable_mat_pair()->set_mat_index(i);
			mat_def->mutable_mat_pair()->set_mat_type(j);
			mat_def->set_id(mat.getToken());
			mat_def->set_name(mat.toString()); //find the name at cave temperature;
			if (raws->mat_table.builtin[i]->state_color[GetState(raws->mat_table.builtin[i])] < raws->language.colors.size())
			{
				df::descriptor_color *color = raws->language.colors[raws->mat_table.builtin[i]->state_color[GetState(raws->mat_table.builtin[i])]];
				mat_def->mutable_state_color()->set_red(color->red);
				mat_def->mutable_state_color()->set_green(color->green);
				mat_def->mutable_state_color()->set_blue(color->blue);
			}
		}
	}
	for (int i = 0; i < raws->creatures.all.size(); i++)
	{
		df::creature_raw * creature = raws->creatures.all[i];
		for (int j = 0; j < creature->material.size(); j++)
		{
			mat.decode(j + 19, i);
			MaterialDefinition *mat_def = out->add_material_list();
			mat_def->mutable_mat_pair()->set_mat_index(j+19);
			mat_def->mutable_mat_pair()->set_mat_type(i);
			mat_def->set_id(mat.getToken());
			mat_def->set_name(mat.toString()); //find the name at cave temperature;
			if (creature->material[j]->state_color[GetState(creature->material[j])] < raws->language.colors.size())
			{
				df::descriptor_color *color = raws->language.colors[creature->material[j]->state_color[GetState(creature->material[j])]];
				mat_def->mutable_state_color()->set_red(color->red);
				mat_def->mutable_state_color()->set_green(color->green);
				mat_def->mutable_state_color()->set_blue(color->blue);
			}
		}
	}
	return CR_OK;
}

void CopyBlock(df::map_block * DfBlock, RemoteFortressReader::MapBlock * NetBlock)
{
	NetBlock->set_map_x(DfBlock->map_pos.x);
	NetBlock->set_map_y(DfBlock->map_pos.y);
	NetBlock->set_map_z(DfBlock->map_pos.z);
	for (int yy = 0; yy < 16; yy++)
	{
		for (int xx = 0; xx < 16; xx++)
		{
			df::tiletype tile = DfBlock->tiletype[xx][yy];
			NetBlock->add_tiletype_shapes((RemoteFortressReader::TiletypeShape)tileShape(tile));
			NetBlock->add_tiletype_materials((RemoteFortressReader::TiletypeMaterial)tileMaterial(tile));
			NetBlock->add_tiletype_specials((RemoteFortressReader::TiletypeSpecial)tileSpecial(tile));
		}
	}
}

static command_result GetBlockList(color_ostream &stream, const BlockRequest *in, BlockList *out)
{
	//stream.print("Got request for blocks from (%d, %d, %d) to (%d, %d, %d).\n", in->min_x(), in->min_y(), in->min_z(), in->max_x(), in->max_y(), in->max_z());
	for (int zz = in->min_z(); zz < in->max_z(); zz++)
	{
		for (int yy = in->min_y(); yy < in->max_y(); yy++)
		{
			for (int xx = in->min_x(); xx < in->max_x(); xx++)
			{
				df::map_block * block = DFHack::Maps::getBlock(xx, yy, zz);
				if (block == NULL)
					continue;
				RemoteFortressReader::MapBlock *net_block = out->add_map_blocks();
				CopyBlock(block, net_block);
			}
		}
	}
	return CR_OK;
}