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

#include <modules/Gui.h>

#include <DataDefs.h>
#include <df/ui.h>
#include <df/world.h>
#include <df/squad.h>
#include <df/unit.h>
#include <df/unit_soul.h>
#include <df/historical_figure.h>
#include <df/language_name.h>

#include <stdlib.h>

using std::vector;
using std::string;
using std::endl;
using namespace DFHack;
using namespace df::enums;

using df::global::ui;
using df::global::world;

static command_result rename(Core * c, vector <string> & parameters);

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

DFhackCExport command_result plugin_init (Core *c, std::vector <PluginCommand> &commands)
{
    commands.clear();
    if (world && ui) {
        commands.push_back(PluginCommand(
            "rename", "Rename various things.", rename, false,
            "  rename squad <index> \"name\"\n"
            "  rename hotkey <index> \"name\"\n"
            "    (identified by ordinal index)\n"
            "  rename unit \"nickname\"\n"
            "  rename unit-profession \"custom profession\"\n"
            "    (a unit must be highlighted in the ui)\n"
        ));
    }
    return CR_OK;
}

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

static void set_nickname(df::language_name *name, std::string nick)
{
    if (!name->has_name)
    {
        *name = df::language_name();

        name->language = 0;
        name->has_name = true;
    }

    name->nickname = nick;
}

static command_result rename(Core * c, vector <string> &parameters)
{
    CoreSuspender suspend(c);

    string cmd;
    if (!parameters.empty())
        cmd = parameters[0];

    if (cmd == "squad")
    {
        if (parameters.size() != 3)
            return CR_WRONG_USAGE;

        std::vector<df::squad*> &squads = world->squads.all;

        int id = atoi(parameters[1].c_str());
        if (id < 1 || id > squads.size()) {
            c->con.printerr("Invalid squad index\n");
            return CR_WRONG_USAGE;
        }

        squads[id-1]->alias = parameters[2];
    }
    else if (cmd == "hotkey")
    {
        if (parameters.size() != 3)
            return CR_WRONG_USAGE;

        int id = atoi(parameters[1].c_str());
        if (id < 1 || id > 16) {
            c->con.printerr("Invalid hotkey index\n");
            return CR_WRONG_USAGE;
        }

        ui->main.hotkeys[id-1].name = parameters[2];
    }
    else if (cmd == "unit")
    {
        if (parameters.size() != 2)
            return CR_WRONG_USAGE;

        df::unit *unit = getSelectedUnit(c);
        if (!unit)
            return CR_WRONG_USAGE;

        // There are 3 copies of the name, and the one
        // in the unit is not the authoritative one.
        // This is the reason why military units often
        // lose nicknames set from Dwarf Therapist.
        set_nickname(&unit->name, parameters[1]);

        if (unit->status.current_soul)
            set_nickname(&unit->status.current_soul->name, parameters[1]);

        df::historical_figure *figure = df::historical_figure::find(unit->hist_figure_id);
        if (figure)
            set_nickname(&figure->name, parameters[1]);
    }
    else if (cmd == "unit-profession")
    {
        if (parameters.size() != 2)
            return CR_WRONG_USAGE;

        df::unit *unit = getSelectedUnit(c);
        if (!unit)
            return CR_WRONG_USAGE;

        unit->custom_profession = parameters[1];
    }
    else
    {
        if (!parameters.empty() && cmd != "?")
            c->con.printerr("Invalid command: %s\n", cmd.c_str());
        return CR_WRONG_USAGE;
    }

    return CR_OK;
}