#include "Core.h"
#include "Console.h"
#include "Export.h"
#include "PluginManager.h"

#include "DataDefs.h"
#include "df/world.h"
#include "df/map_block.h"
#include "df/block_square_event.h"
#include "df/block_square_event_material_spatterst.h"
#include "df/item_actual.h"
#include "df/unit.h"
#include "df/unit_spatter.h"
#include "df/matter_state.h"
#include "df/cursor.h"
#include "df/builtin_mats.h"
#include "df/contaminant.h"

using std::vector;
using std::string;
using namespace DFHack;

using df::global::world;
using df::global::cursor;

command_result cleanmap (Core * c, bool snow, bool mud)
{
    // Invoked from clean(), already suspended
    int num_blocks = 0, blocks_total = world->map.map_blocks.size();
    for (int i = 0; i < blocks_total; i++)
    {
        df::map_block *block = world->map.map_blocks[i];
        bool cleaned = false;
        for(int x = 0; x < 16; x++)
        {
            for(int y = 0; y < 16; y++)
            {
                block->occupancy[x][y].bits.arrow_color = 0;
                block->occupancy[x][y].bits.arrow_variant = 0;
            }
        }
        for (int j = 0; j < block->block_events.size(); j++)
        {
            df::block_square_event *evt = block->block_events[j];
            if (evt->getType() != df::block_square_event_type::material_spatter)
                continue;
            // type verified - recast to subclass
            df::block_square_event_material_spatterst *spatter = (df::block_square_event_material_spatterst *)evt;

            // filter snow
            if(!snow
                && spatter->mat_type == df::builtin_mats::WATER
                && spatter->mat_state == df::matter_state::Powder)
                continue;
            // filter mud
            if(!mud
                && spatter->mat_type == df::builtin_mats::MUD
                && spatter->mat_state == df::matter_state::Solid)
                continue;

            delete evt;
            block->block_events.erase(block->block_events.begin() + j);
            j--;
            cleaned = true;
        }
        num_blocks += cleaned;
    }

    if(num_blocks)
        c->con.print("Cleaned %d of %d map blocks.\n", num_blocks, blocks_total);
    return CR_OK;
}

command_result cleanitems (Core * c)
{
    // Invoked from clean(), already suspended
    int cleaned_items = 0, cleaned_total = 0;
    for (int i = 0; i < world->items.all.size(); i++)
    {
        // currently, all item classes extend item_actual, so this should be safe
        df::item_actual *item = (df::item_actual *)world->items.all[i];
        if (item->contaminants && item->contaminants->size())
        {
            for (int j = 0; j < item->contaminants->size(); j++)
                delete item->contaminants->at(j);
            cleaned_items++;
            cleaned_total += item->contaminants->size();
            item->contaminants->clear();
        }
    }
    if (cleaned_total)
        c->con.print("Removed %d contaminants from %d items.\n", cleaned_total, cleaned_items);
    return CR_OK;
}

command_result cleanunits (Core * c)
{
    // Invoked from clean(), already suspended
    int num_units = world->units.all.size();
    int cleaned_units = 0, cleaned_total = 0;
    for (int i = 0; i < num_units; i++)
    {
        df::unit *unit = world->units.all[i];
        if (unit->body.spatters.size())
        {
            for (int j = 0; j < unit->body.spatters.size(); j++)
                delete unit->body.spatters[j];
            cleaned_units++;
            cleaned_total += unit->body.spatters.size();
            unit->body.spatters.clear();
        }
    }
    if (cleaned_total)
        c->con.print("Removed %d contaminants from %d creatures.\n", cleaned_total, cleaned_units);
    return CR_OK;
}

// This is slightly different from what's in the Maps module - it takes tile coordinates rather than block coordinates
df::map_block *getBlock (int32_t x, int32_t y, int32_t z)
{
    if ((x < 0) || (y < 0) || (z < 0))
        return NULL;
    if ((x >= world->map.x_count) || (y >= world->map.y_count) || (z >= world->map.z_count))
        return NULL;
    return world->map.block_index[x >> 4][y >> 4][z];
}

DFhackCExport command_result spotclean (Core * c, vector <string> & parameters)
{
    // HOTKEY COMMAND: CORE ALREADY SUSPENDED
    if (cursor->x == -30000)
    {
        c->con.printerr("The cursor is not active.\n");
        return CR_FAILURE;
    }
    df::map_block *block = getBlock(cursor->x, cursor->y, cursor->z);
    if (block == NULL)
    {
        c->con.printerr("Invalid map block selected!\n");
        return CR_FAILURE;
    }

    for (int i = 0; i < block->block_events.size(); i++)
    {
        df::block_square_event *evt = block->block_events[i];
        if (evt->getType() != df::block_square_event_type::material_spatter)
            continue;
        // type verified - recast to subclass
        df::block_square_event_material_spatterst *spatter = (df::block_square_event_material_spatterst *)evt;
        spatter->amount[cursor->x % 16][cursor->y % 16] = 0;
    }
    return CR_OK;
}

DFhackCExport command_result clean (Core * c, vector <string> & parameters)
{
    bool help = false;
    bool map = false;
    bool snow = false;
    bool mud = false;
    bool units = false;
    bool items = false;
    for(int i = 0; i < parameters.size();i++)
    {
        if(parameters[i] == "map")
            map = true;
        else if(parameters[i] == "units")
            units = true;
        else if(parameters[i] == "items")
            items = true;
        else if(parameters[i] == "all")
        {
            map = true;
            items = true;
            units = true;
        }
        if(parameters[i] == "snow")
            snow = true;
        else if(parameters[i] == "mud")
            mud = true;
        else if(parameters[i] == "help" ||parameters[i] == "?")
        {
            help = true;
        }
    }
    if(!map && !units && !items)
        help = true;
    if(help)
    {
        c->con.print("Removes contaminants from map tiles, items and creatures.\n"
            "Options:\n"
            "map        - clean the map tiles\n"
            "items      - clean all items\n"
            "units      - clean all creatures\n"
            "all        - clean everything.\n"
            "More options for 'map':\n"
            "snow       - also remove snow\n"
            "mud        - also remove mud\n"
            "Example: clean all mud snow\n"
            "This removes all spatter, including mud and snow from map tiles.\n"
            );
        return CR_OK;
    }
    c->Suspend();
    if(map)
        cleanmap(c,snow,mud);
    if(units)
        cleanunits(c);
    if(items)
        cleanitems(c);
    c->Resume();
    return CR_OK;
}

DFhackCExport const char * plugin_name ( void )
{
    return "cleaners";
}

DFhackCExport command_result plugin_init ( Core * c, std::vector <PluginCommand> &commands)
{
    commands.clear();
    commands.push_back(PluginCommand("clean","Removes contaminants from map tiles, items and creatures.",clean));
    commands.push_back(PluginCommand("spotclean","Cleans map tile under cursor.",spotclean,cursor_hotkey));
    return CR_OK;
}

DFhackCExport command_result plugin_shutdown ( Core * c )
{
    return CR_OK;
}