/* vi: set ts=2:
+-------------------+
|                   |  Enno Rehling <enno@eressea.de>
| Eressea PBEM host |  Christian Schlittchen <corwin@amber.kn-bremen.de>
| (c) 1998 - 2008   |  Katja Zedel <katze@felidae.kn-bremen.de>
|                   |  Henning Peters <faroul@beyond.kn-bremen.de>
+-------------------+

This program may not be used, modified or distributed
without prior permission by the authors of Eressea.
*/

#include <platform.h>
#include "bind_ship.h"
#include "bind_unit.h"

#include <kernel/region.h>
#include <kernel/unit.h>
#include <kernel/move.h>
#include <kernel/ship.h>
#include <kernel/build.h>

#include <util/language.h>

#include <tolua.h>
#include <string.h>
#include <stdlib.h>

int tolua_shiplist_next(lua_State * L)
{
  ship **ship_ptr = (ship **) lua_touserdata(L, lua_upvalueindex(1));
  ship *u = *ship_ptr;
  if (u != NULL) {
    tolua_pushusertype(L, (void *)u, TOLUA_CAST "ship");
    *ship_ptr = u->next;
    return 1;
  } else
    return 0;                   /* no more values to return */
}

static int tolua_ship_get_id(lua_State * L)
{
  ship *self = (ship *) tolua_tousertype(L, 1, 0);
  tolua_pushnumber(L, (lua_Number) self->no);
  return 1;
}

static int tolua_ship_get_name(lua_State * L)
{
  ship *self = (ship *) tolua_tousertype(L, 1, 0);
  tolua_pushstring(L, ship_getname(self));
  return 1;
}

static int tolua_ship_get_display(lua_State * L)
{
  ship *self = (ship *) tolua_tousertype(L, 1, 0);
  tolua_pushstring(L, self->display);
  return 1;
}

static int tolua_ship_get_region(lua_State * L)
{
  ship *self = (ship *) tolua_tousertype(L, 1, 0);
  if (self) {
    tolua_pushusertype(L, self->region, TOLUA_CAST "region");
    return 1;
  }
  return 0;
}

static int tolua_ship_set_region(lua_State * L)
{
  ship *self = (ship *) tolua_tousertype(L, 1, 0);
  region *r = (region *) tolua_tousertype(L, 1, 0);
  if (self) {
    move_ship(self, self->region, r, NULL);
  }
  return 0;
}

static int tolua_ship_set_name(lua_State * L)
{
  ship *self = (ship *) tolua_tousertype(L, 1, 0);
  ship_setname(self, tolua_tostring(L, 2, 0));
  return 0;
}

static int tolua_ship_set_display(lua_State * L)
{
    ship *self = (ship *) tolua_tousertype(L, 1, 0);
    free(self->display);
    self->display = _strdup(tolua_tostring(L, 2, 0));
    return 0;
}

static int tolua_ship_get_units(lua_State * L)
{
  ship *self = (ship *) tolua_tousertype(L, 1, 0);
  unit **unit_ptr = (unit **) lua_newuserdata(L, sizeof(unit *));
  unit *u = self->region->units;

  while (u && u->ship != self)
    u = u->next;
  luaL_getmetatable(L, TOLUA_CAST "unit");
  lua_setmetatable(L, -2);

  *unit_ptr = u;

  lua_pushcclosure(L, tolua_unitlist_nexts, 1);
  return 1;
}

static int tolua_ship_get_objects(lua_State * L)
{
  ship *self = (ship *) tolua_tousertype(L, 1, 0);
  tolua_pushusertype(L, (void *)&self->attribs, TOLUA_CAST "hashtable");
  return 1;
}

static int tolua_ship_create(lua_State * L)
{
  region *r = (region *) tolua_tousertype(L, 1, 0);
  const char *sname = tolua_tostring(L, 2, 0);
  if (sname) {
    const ship_type *stype = st_find(sname);
    if (stype) {
      ship *sh = new_ship(stype, r, default_locale);
      sh->size = stype->construction->maxsize;
      tolua_pushusertype(L, (void *)sh, TOLUA_CAST "ship");
      return 1;
    }
  }
  return 0;
}

static int
 tolua_ship_tostring(lua_State * L)
{
  ship *self = (ship *) tolua_tousertype(L, 1, 0);
  lua_pushstring(L, shipname(self));
  return 1;
}

static int tolua_ship_get_flags(lua_State * L)
{
  ship *self = (ship *) tolua_tousertype(L, 1, 0);
  tolua_pushnumber(L, (lua_Number) self->flags);
  return 1;
}

static int tolua_ship_set_flags(lua_State * L)
{
  ship *self = (ship *) tolua_tousertype(L, 1, 0);
  self->flags = (int)tolua_tonumber(L, 2, 0);
  return 0;
}

static int tolua_ship_set_coast(lua_State * L)
{
  ship *self = (ship *) tolua_tousertype(L, 1, 0);
  if (lua_isnil(L, 2)) {
    self->coast = NODIRECTION;
  } else if (lua_isnumber(L, 2)) {
    self->coast = (direction_t) tolua_tonumber(L, 2, 0);
  }
  return 0;
}

static int tolua_ship_get_coast(lua_State * L)
{
  ship *self = (ship *) tolua_tousertype(L, 1, 0);
  if (self->coast) {
    tolua_pushnumber(L, self->coast);
    return 1;
  }
  return 0;
}

void tolua_ship_open(lua_State * L)
{
  /* register user types */
  tolua_usertype(L, TOLUA_CAST "ship");

  tolua_module(L, NULL, 0);
  tolua_beginmodule(L, NULL);
  {
    tolua_cclass(L, TOLUA_CAST "ship", TOLUA_CAST "ship", TOLUA_CAST "", NULL);
    tolua_beginmodule(L, TOLUA_CAST "ship");
    {
      tolua_function(L, TOLUA_CAST "__tostring", tolua_ship_tostring);
      tolua_variable(L, TOLUA_CAST "id", tolua_ship_get_id, NULL);
      tolua_variable(L, TOLUA_CAST "name", tolua_ship_get_name,
        tolua_ship_set_name);
      tolua_variable(L, TOLUA_CAST "info", tolua_ship_get_display,
        tolua_ship_set_display);
      tolua_variable(L, TOLUA_CAST "units", tolua_ship_get_units, NULL);
      tolua_variable(L, TOLUA_CAST "flags", &tolua_ship_get_flags,
        tolua_ship_set_flags);
      tolua_variable(L, TOLUA_CAST "region", tolua_ship_get_region,
        tolua_ship_set_region);
      tolua_variable(L, TOLUA_CAST "coast", tolua_ship_get_coast,
        tolua_ship_set_coast);
#ifdef TODO
      .property("type", &ship_gettype)
        .property("weight", &ship_getweight)
        .property("capacity", &ship_getcapacity)
        .property("maxsize", &ship_maxsize)
        .def_readwrite("damage", &ship::damage)
        .def_readwrite("size", &ship::size)
        .def_readwrite("coast", &ship::coast)
#endif
        tolua_variable(L, TOLUA_CAST "objects", tolua_ship_get_objects, 0);

      tolua_function(L, TOLUA_CAST "create", tolua_ship_create);
    }
    tolua_endmodule(L);
  }
  tolua_endmodule(L);
}