/* 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 "bindings.h"
#include "bind_unit.h"
#include "bind_storage.h"
#include "bind_building.h"
#include "bind_hashtable.h"
#include "bind_message.h"
#include "bind_building.h"
#include "bind_faction.h"
#include "bind_ship.h"
#include "bind_gmtool.h"
#include "bind_region.h"
#include "helpers.h"
#include "console.h"

#include <kernel/config.h>

#include <kernel/alliance.h>
#include <kernel/building.h>
#include <kernel/curse.h>
#include <kernel/skill.h>
#include <kernel/equipment.h>
#include <kernel/calendar.h>
#include <kernel/unit.h>
#include <kernel/terrain.h>
#include <kernel/messages.h>
#include <kernel/region.h>
#include <kernel/reports.h>
#include <kernel/building.h>
#include <kernel/plane.h>
#include <kernel/race.h>
#include <kernel/item.h>
#include <kernel/order.h>
#include <kernel/ship.h>
#include <kernel/teleport.h>
#include <kernel/faction.h>
#include <kernel/save.h>
#include <kernel/spell.h>

#include "creport.h"
#include "economy.h"
#include "summary.h"
#include "laws.h"
#include "monster.h"
#include "market.h"

#include <modules/autoseed.h>
#include <modules/score.h>
#include <attributes/key.h>

#include <util/attrib.h>
#include <util/base36.h>
#include <util/language.h>
#include <util/lists.h>
#include <util/log.h>
#include <quicklist.h>
#include <util/rand.h>
#include <util/rng.h>

#include <storage.h>

#include <iniparser.h>
#include <tolua.h>
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>

#include <time.h>
#include <assert.h>

#define TOLUA_PKG(NAME) extern void tolua_##NAME##_open(lua_State * L)

TOLUA_PKG(eressea);
TOLUA_PKG(process);
TOLUA_PKG(settings);
TOLUA_PKG(config);

int log_lua_error(lua_State * L)
{
  const char *error = lua_tostring(L, -1);
  log_error("LUA call failed.\n%s\n", error);
  lua_pop(L, 1);
  return 1;
}

int tolua_orderlist_next(lua_State * L)
{
  order **order_ptr = (order **) lua_touserdata(L, lua_upvalueindex(1));
  order *ord = *order_ptr;
  if (ord != NULL) {
    char cmd[8192];
    write_order(ord, cmd, sizeof(cmd));
    tolua_pushstring(L, cmd);
    *order_ptr = ord->next;
    return 1;
  }
  return 0;
}

static int tolua_quicklist_iter(lua_State * L)
{
  quicklist **qlp = (quicklist **) lua_touserdata(L, lua_upvalueindex(1));
  quicklist *ql = *qlp;
  if (ql != NULL) {
    int index = lua_tointeger(L, lua_upvalueindex(2));
    const char *type = lua_tostring(L, lua_upvalueindex(3));
    void *data = ql_get(ql, index);
    tolua_pushusertype(L, data, TOLUA_CAST type);
    ql_advance(qlp, &index, 1);
    tolua_pushnumber(L, index);
    lua_replace(L, lua_upvalueindex(2));
    return 1;
  }
  return 0;
}

int tolua_quicklist_push(struct lua_State *L, const char *list_type,
  const char *elem_type, struct quicklist *list)
{
  if (list) {
    quicklist **qlist_ptr =
      (quicklist **) lua_newuserdata(L, sizeof(quicklist *));
    *qlist_ptr = list;
    luaL_getmetatable(L, list_type);
    lua_setmetatable(L, -2);
    lua_pushnumber(L, 0);
    lua_pushstring(L, elem_type);
    lua_pushcclosure(L, tolua_quicklist_iter, 3);       /* OBS: this closure has multiple upvalues (list, index, type_name) */
  } else {
    lua_pushnil(L);
  }
  return 1;
}

int tolua_itemlist_next(lua_State * L)
{
  item **item_ptr = (item **) lua_touserdata(L, lua_upvalueindex(1));
  item *itm = *item_ptr;
  if (itm != NULL) {
    tolua_pushstring(L, itm->type->rtype->_name[0]);
    *item_ptr = itm->next;
    return 1;
  }
  return 0;
}

static int tolua_autoseed(lua_State * L)
{
  const char *filename = tolua_tostring(L, 1, 0);
  int new_island = tolua_toboolean(L, 2, 0);
  newfaction *players = read_newfactions(filename);
  if (players != NULL) {
    while (players) {
      int n = listlen(players);
      int k = (n + ISLANDSIZE - 1) / ISLANDSIZE;
      k = n / k;
      n = autoseed(&players, k, new_island ? 0 : TURNS_PER_ISLAND);
      if (n == 0) {
        break;
      }
    }
  }
  return 0;
}

static int tolua_getkey(lua_State * L)
{
  const char *name = tolua_tostring(L, 1, 0);
  int flag = atoi36(name);
  attrib *a = find_key(global.attribs, flag);
  lua_pushboolean(L, a != NULL);
  return 1;
}

static int tolua_translate(lua_State * L)
{
  const char *str = tolua_tostring(L, 1, 0);
  const char *lang = tolua_tostring(L, 2, 0);
  struct locale *loc = lang ? find_locale(lang) : default_locale;
  if (loc) {
    str = locale_string(loc, str);
    tolua_pushstring(L, str);
    return 1;
  }
  return 0;
}

static int tolua_setkey(lua_State * L)
{
  const char *name = tolua_tostring(L, 1, 0);
  int value = tolua_toboolean(L, 2, 0);
  int flag = atoi36(name);
  attrib *a = find_key(global.attribs, flag);
  if (a == NULL && value) {
    add_key(&global.attribs, flag);
  } else if (a != NULL && !value) {
    a_remove(&global.attribs, a);
  }
  return 0;
}

static int tolua_rng_int(lua_State * L)
{
  lua_pushnumber(L, (lua_Number) rng_int());
  return 1;
}

static int tolua_read_orders(lua_State * L)
{
  const char *filename = tolua_tostring(L, 1, 0);
  int result = readorders(filename);
  lua_pushnumber(L, (lua_Number) result);
  return 1;
}

static int tolua_message_unit(lua_State * L)
{
  unit *sender = (unit *) tolua_tousertype(L, 1, 0);
  unit *target = (unit *) tolua_tousertype(L, 2, 0);
  const char *str = tolua_tostring(L, 3, 0);
  if (!target)
    tolua_error(L, TOLUA_CAST "target is nil", NULL);
  if (!sender)
    tolua_error(L, TOLUA_CAST "sender is nil", NULL);
  deliverMail(target->faction, sender->region, sender, str, target);
  return 0;
}

static int tolua_message_faction(lua_State * L)
{
  unit *sender = (unit *) tolua_tousertype(L, 1, 0);
  faction *target = (faction *) tolua_tousertype(L, 2, 0);
  const char *str = tolua_tostring(L, 3, 0);
  if (!target)
    tolua_error(L, TOLUA_CAST "target is nil", NULL);
  if (!sender)
    tolua_error(L, TOLUA_CAST "sender is nil", NULL);
  deliverMail(target, sender->region, sender, str, NULL);
  return 0;
}

static int tolua_message_region(lua_State * L)
{
  unit *sender = (unit *) tolua_tousertype(L, 1, 0);
  const char *str = tolua_tostring(L, 2, 0);
  if (!sender)
    tolua_error(L, TOLUA_CAST "sender is nil", NULL);
  ADDMSG(&sender->region->msgs, msg_message("mail_result", "unit message",
      sender, str));
  return 0;
}

static int tolua_update_guards(lua_State * L)
{
  update_guards();
  return 0;
}

static int tolua_set_turn(lua_State * L)
{
  turn = (int)tolua_tonumber(L, 1, 0);
  return 0;
}

static int tolua_get_turn(lua_State * L)
{
  tolua_pushnumber(L, (lua_Number) turn);
  return 1;
}

static int tolua_atoi36(lua_State * L)
{
  const char *s = tolua_tostring(L, 1, 0);
  tolua_pushnumber(L, (lua_Number) atoi36(s));
  return 1;
}

static int tolua_itoa36(lua_State * L)
{
  int i = (int)tolua_tonumber(L, 1, 0);
  tolua_pushstring(L, itoa36(i));
  return 1;
}

static int tolua_dice_rand(lua_State * L)
{
  const char *s = tolua_tostring(L, 1, 0);
  tolua_pushnumber(L, dice_rand(s));
  return 1;
}

static int tolua_addequipment(lua_State * L)
{
  const char *eqname = tolua_tostring(L, 1, 0);
  const char *iname = tolua_tostring(L, 2, 0);
  const char *value = tolua_tostring(L, 3, 0);
  int result = -1;
  if (iname != NULL) {
    const struct item_type *itype = it_find(iname);
    if (itype != NULL) {
      equipment_setitem(create_equipment(eqname), itype, value);
      result = 0;
    }
  }
  lua_pushnumber(L, (lua_Number) result);
  return 1;
}

static int tolua_get_season(lua_State * L)
{
  int turnno = (int)tolua_tonumber(L, 1, 0);
  gamedate gd;
  get_gamedate(turnno, &gd);
  tolua_pushstring(L, seasonnames[gd.season]);
  return 1;
}

static int tolua_create_curse(lua_State * L)
{
  unit *u = (unit *) tolua_tousertype(L, 1, 0);
  tolua_Error tolua_err;
  attrib **ap = NULL;
  if (tolua_isusertype(L, 2, TOLUA_CAST "unit", 0, &tolua_err)) {
    unit *target = (unit *) tolua_tousertype(L, 2, 0);
    if (target)
      ap = &target->attribs;
  } else if (tolua_isusertype(L, 2, TOLUA_CAST "region", 0, &tolua_err)) {
    region *target = (region *) tolua_tousertype(L, 2, 0);
    if (target)
      ap = &target->attribs;
  } else if (tolua_isusertype(L, 2, TOLUA_CAST "ship", 0, &tolua_err)) {
    ship *target = (ship *) tolua_tousertype(L, 2, 0);
    if (target)
      ap = &target->attribs;
  } else if (tolua_isusertype(L, 2, TOLUA_CAST "building", 0, &tolua_err)) {
    building *target = (building *) tolua_tousertype(L, 2, 0);
    if (target)
      ap = &target->attribs;
  }
  if (ap) {
    const char *cname = tolua_tostring(L, 3, 0);
    const curse_type *ctype = ct_find(cname);
    if (ctype) {
      float vigour = (float)tolua_tonumber(L, 4, 0);
      int duration = (int)tolua_tonumber(L, 5, 0);
      float effect = (float)tolua_tonumber(L, 6, 0);
      int men = (int)tolua_tonumber(L, 7, 0);   /* optional */
      curse *c = create_curse(u, ap, ctype, vigour, duration, effect, men);
      if (c) {
        tolua_pushboolean(L, true);
        return 1;
      }
    }
  }
  tolua_pushboolean(L, false);
  return 1;
}

static int tolua_learn_skill(lua_State * L)
{
  unit *u = (unit *) tolua_tousertype(L, 1, 0);
  const char *skname = tolua_tostring(L, 2, 0);
  float chances = (float)tolua_tonumber(L, 3, 0);
  skill_t sk = sk_find(skname);
  if (sk != NOSKILL) {
    learn_skill(u, sk, chances);
  }
  return 0;
}

static int tolua_update_scores(lua_State * L)
{
  score();
  return 0;
}

static int tolua_update_owners(lua_State * L)
{
  region *r;
  for (r = regions; r; r = r->next) {
    update_owners(r);
  }
  return 0;
}

static int tolua_update_subscriptions(lua_State * L)
{
  update_subscriptions();
  return 0;
}

static int tolua_remove_empty_units(lua_State * L)
{
  remove_empty_units();
  return 0;
}

static int tolua_get_nmrs(lua_State * L)
{
  int result = -1;
  int n = (int)tolua_tonumber(L, 1, 0);
  if (n >= 0 && n <= NMRTimeout()) {
    if (nmrs == NULL) {
      update_nmrs();
    }
    result = nmrs[n];
  }
  tolua_pushnumber(L, (lua_Number) result);
  return 1;
}

static int tolua_equipunit(lua_State * L)
{
  unit *u = (unit *) tolua_tousertype(L, 1, 0);
  const char *eqname = tolua_tostring(L, 2, 0);
  equip_unit(u, get_equipment(eqname));
  return 0;
}

static int tolua_equipment_setitem(lua_State * L)
{
  int result = -1;
  const char *eqname = tolua_tostring(L, 1, 0);
  const char *iname = tolua_tostring(L, 2, 0);
  const char *value = tolua_tostring(L, 3, 0);
  if (iname != NULL) {
    const struct item_type *itype = it_find(iname);
    if (itype != NULL) {
      equipment_setitem(create_equipment(eqname), itype, value);
      result = 0;
    }
  }
  tolua_pushnumber(L, (lua_Number) result);
  return 1;
}

static int tolua_spawn_braineaters(lua_State * L)
{
  float chance = (float)tolua_tonumber(L, 1, 0);
  spawn_braineaters(chance);
  return 0;
}

static int tolua_init_reports(lua_State * L)
{
  int result = init_reports();
  tolua_pushnumber(L, (lua_Number) result);
  return 1;
}

static int tolua_write_report(lua_State * L)
{
  faction *f = (faction *) tolua_tousertype(L, 1, 0);
  if (f) {
      time_t ltime = time(0);
      int result = write_reports(f, ltime);
      tolua_pushnumber(L, (lua_Number)result);
  }
  else {
      tolua_pushstring(L, "function expects a faction, got nil");
  }
  return 1;
}

static int tolua_write_reports(lua_State * L)
{
  int result;
  init_reports();
  result = reports();
  tolua_pushnumber(L, (lua_Number) result);
  return 1;
}

static void reset_game(void)
{
  region *r;
  faction *f;
  for (r = regions; r; r = r->next) {
    unit *u;
    building *b;
    r->flags &= RF_SAVEMASK;
    for (u = r->units; u; u = u->next) {
      u->flags &= UFL_SAVEMASK;
    }
    for (b = r->buildings; b; b = b->next) {
      b->flags &= BLD_SAVEMASK;
    }
    if (r->land && r->land->ownership && r->land->ownership->owner) {
      faction *owner = r->land->ownership->owner;
      if (owner == get_monsters()) {
        /* some compat-fix, i believe. */
        owner = update_owners(r);
      }
      if (owner) {
        fset(r, RF_GUARDED);
      }
    }
  }
  for (f = factions; f; f = f->next) {
    f->flags &= FFL_SAVEMASK;
  }
}

static int tolua_process_orders(lua_State * L)
{
  ++turn;
  reset_game();
  processorders();
  return 0;
}

static int tolua_write_passwords(lua_State * L)
{
  int result = writepasswd();
  lua_pushnumber(L, (lua_Number) result);
  return 0;
}

static struct summary *sum_begin = 0;
static int tolua_init_summary(lua_State * L)
{
  sum_begin = make_summary();
  return 0;
}

static int tolua_write_summary(lua_State * L)
{
  if (sum_begin) {
    struct summary *sum_end = make_summary();
    report_summary(sum_end, sum_begin, false);
    report_summary(sum_end, sum_begin, true);
    return 0;
  }
  return 0;
}

static int tolua_write_map(lua_State * L)
{
  const char *filename = tolua_tostring(L, 1, 0);
  if (filename) {
    crwritemap(filename);
  }
  return 0;
}

static int tolua_read_turn(lua_State * L)
{
  int cturn = current_turn();
  tolua_pushnumber(L, (lua_Number) cturn);
  return 1;
}

static int tolua_get_faction(lua_State * L)
{
  int no = tolua_toid(L, 1, 0);
  faction *f = findfaction(no);
  tolua_pushusertype(L, f, TOLUA_CAST "faction");
  return 1;
}

static int tolua_get_region(lua_State * L)
{
  int x = (int)tolua_tonumber(L, 1, 0);
  int y = (int)tolua_tonumber(L, 2, 0);
  region *r;
  assert(!pnormalize(&x, &y, findplane(x, y)));
  r = findregion(x, y);
  tolua_pushusertype(L, r, TOLUA_CAST "region");
  return 1;
}

static int tolua_get_region_byid(lua_State * L)
{
  int uid = (int)tolua_tonumber(L, 1, 0);
  region *r = findregionbyid(uid);
  tolua_pushusertype(L, r, TOLUA_CAST "region");
  return 1;
}

static int tolua_get_building(lua_State * L)
{
  int no = tolua_toid(L, 1, 0);
  building *b = findbuilding(no);
  tolua_pushusertype(L, b, TOLUA_CAST "building");
  return 1;
}

static int tolua_get_ship(lua_State * L)
{
  int no = tolua_toid(L, 1, 0);
  ship *sh = findship(no);
  tolua_pushusertype(L, sh, TOLUA_CAST "ship");
  return 1;
}

static int tolua_get_alliance(lua_State * L)
{
  int no = tolua_toid(L, 1, 0);
  alliance *f = findalliance(no);
  tolua_pushusertype(L, f, TOLUA_CAST "alliance");
  return 1;
}

static int tolua_get_unit(lua_State * L)
{
  int no = tolua_toid(L, 1, 0);
  unit *u = findunit(no);
  tolua_pushusertype(L, u, TOLUA_CAST "unit");
  return 1;
}

static int tolua_alliance_create(lua_State * L)
{
  int id = (int)tolua_tonumber(L, 1, 0);
  const char *name = tolua_tostring(L, 2, 0);
  alliance *alli = makealliance(id, name);
  tolua_pushusertype(L, alli, TOLUA_CAST "alliance");
  return 1;
}

static int tolua_get_regions(lua_State * L)
{
  region **region_ptr = (region **) lua_newuserdata(L, sizeof(region *));
  luaL_getmetatable(L, "region");
  lua_setmetatable(L, -2);
  *region_ptr = regions;
  lua_pushcclosure(L, tolua_regionlist_next, 1);
  return 1;
}

static int tolua_get_factions(lua_State * L)
{
  faction **faction_ptr = (faction **) lua_newuserdata(L, sizeof(faction *));
  luaL_getmetatable(L, "faction");
  lua_setmetatable(L, -2);
  *faction_ptr = factions;
  lua_pushcclosure(L, tolua_factionlist_next, 1);
  return 1;
}

static int tolua_get_alliance_factions(lua_State * L)
{
  alliance *self = (alliance *) tolua_tousertype(L, 1, 0);
  return tolua_quicklist_push(L, "faction_list", "faction", self->members);
}

static int tolua_get_alliance_id(lua_State * L)
{
  alliance *self = (alliance *) tolua_tousertype(L, 1, 0);
  tolua_pushnumber(L, (lua_Number) self->id);
  return 1;
}

static int tolua_get_alliance_name(lua_State * L)
{
  alliance *self = (alliance *) tolua_tousertype(L, 1, 0);
  tolua_pushstring(L, self->name);
  return 1;
}

static int tolua_set_alliance_name(lua_State * L)
{
  alliance *self = (alliance *) tolua_tousertype(L, 1, 0);
  alliance_setname(self, tolua_tostring(L, 2, 0));
  return 0;
}

#ifdef WRITE_SPELLS
#include <libxml/tree.h>
#include <util/functions.h>
#include <util/xml.h>
#include <kernel/spell.h>
static int tolua_write_spells(lua_State * L)
{
  spell_f fun = (spell_f) get_function("lua_castspell");
  const char *filename = "magic.xml";
  xmlDocPtr doc = xmlNewDoc(BAD_CAST "1.0");
  xmlNodePtr root = xmlNewNode(NULL, BAD_CAST "spells");
  quicklist *ql;
  int qi;
  for (ql = spells, qi = 0; ql; ql_advance(&ql, &qi, 1)) {
    spell *sp = (spell *) ql_get(ql, qi);
    if (sp->cast != fun) {
      int combat = 0;
      xmlNodePtr node = xmlNewNode(NULL, BAD_CAST "spell");
      xmlNewProp(node, BAD_CAST "name", BAD_CAST sp->sname);
      xmlNewProp(node, BAD_CAST "type", BAD_CAST magic_school[sp->magietyp]);
      xmlNewProp(node, BAD_CAST "rank", xml_i(sp->rank));
      xmlNewProp(node, BAD_CAST "level", xml_i(sp->level));
      xmlNewProp(node, BAD_CAST "index", xml_i(sp->id));
      if (sp->syntax)
        xmlNewProp(node, BAD_CAST "syntax", BAD_CAST sp->syntax);
      if (sp->parameter)
        xmlNewProp(node, BAD_CAST "parameters", BAD_CAST sp->parameter);
      if (sp->components) {
        spell_component *comp = sp->components;
        for (; comp->type != 0; ++comp) {
          static const char *costs[] = { "fixed", "level", "linear" };
          xmlNodePtr cnode = xmlNewNode(NULL, BAD_CAST "resource");
          xmlNewProp(cnode, BAD_CAST "name", BAD_CAST comp->type->_name[0]);
          xmlNewProp(cnode, BAD_CAST "amount", xml_i(comp->amount));
          xmlNewProp(cnode, BAD_CAST "cost", BAD_CAST costs[comp->cost]);
          xmlAddChild(node, cnode);
      }}
      if (sp->sptyp & TESTCANSEE) {
        xmlNewProp(node, BAD_CAST "los", BAD_CAST "true");
      }
      if (sp->sptyp & ONSHIPCAST) {
        xmlNewProp(node, BAD_CAST "ship", BAD_CAST "true");
      }
      if (sp->sptyp & OCEANCASTABLE) {
        xmlNewProp(node, BAD_CAST "ocean", BAD_CAST "true");
      }
      if (sp->sptyp & FARCASTING) {
        xmlNewProp(node, BAD_CAST "far", BAD_CAST "true");
      }
      if (sp->sptyp & SPELLLEVEL) {
        xmlNewProp(node, BAD_CAST "variable", BAD_CAST "true");
      }
      if (sp->sptyp & POSTCOMBATSPELL)
        combat = 3;

      else if (sp->sptyp & COMBATSPELL)
        combat = 2;

      else if (sp->sptyp & PRECOMBATSPELL)
        combat = 1;
      if (combat) {
        xmlNewProp(node, BAD_CAST "combat", xml_i(combat));
      }
      xmlAddChild(root, node);
    }
  }
  xmlDocSetRootElement(doc, root);
  xmlKeepBlanksDefault(0);
  xmlSaveFormatFileEnc(filename, doc, "utf-8", 1);
  xmlFreeDoc(doc);
  return 0;
}
#endif

static int config_get_ships(lua_State * L)
{
  quicklist *ql;
  int qi, i = 0;
  lua_createtable(L, ql_length(shiptypes), 0);
  for (qi = 0, ql = shiptypes; ql; ql_advance(&ql, &qi, 1)) {
    ship_type *stype = (ship_type *) ql_get(ql, qi);
    tolua_pushstring(L, TOLUA_CAST stype->_name);
    lua_rawseti(L, -2, ++i);
  }
  return 1;
}

static int config_get_buildings(lua_State * L)
{
  quicklist *ql;
  int qi, i = 0;
  lua_createtable(L, ql_length(buildingtypes), 0);
  for (qi = 0, ql = buildingtypes; ql; ql_advance(&ql, &qi, 1)) {
    building_type *btype = (building_type *) ql_get(ql, qi);
    tolua_pushstring(L, TOLUA_CAST btype->_name);
    lua_rawseti(L, -2, ++i);
  }
  return 1;
}

static int config_get_locales(lua_State * L)
{
  const struct locale *lang;
  int i = 0, n = 0;
  for (lang = locales; lang; lang = nextlocale(lang))
    ++n;
  lua_createtable(L, n, 0);
  for (lang = locales; lang; lang = nextlocale(lang)) {
    tolua_pushstring(L, TOLUA_CAST locale_name(lang));
    lua_rawseti(L, -2, ++i);
  }
  return 1;
}

static int config_get_resource(lua_State * L)
{
  const char *name = tolua_tostring(L, 1, 0);
  if (name) {
    const struct item_type *itype = it_find(name);
    if (itype) {
      lua_newtable(L);
      lua_pushstring(L, "weight");
      lua_pushinteger(L, itype->weight);
      lua_settable(L, -3);
      if (itype->capacity > 0) {
        lua_pushstring(L, "capacity");
        lua_pushinteger(L, itype->capacity);
        lua_settable(L, -3);
      }
      if (itype->construction) {
        int i;
        lua_pushstring(L, "build_skill_min");
        lua_pushinteger(L, itype->construction->minskill);
        lua_settable(L, -3);
        lua_pushstring(L, "build_skill_name");
        lua_pushstring(L, skillnames[itype->construction->skill]);
        lua_settable(L, -3);
        if (itype->construction->materials) {
          lua_pushstring(L, "materials");
          lua_newtable(L);
          for (i = 0; itype->construction->materials[i].number; ++i) {
            lua_pushstring(L,
              itype->construction->materials[i].rtype->_name[0]);
            lua_pushinteger(L, itype->construction->materials[i].number);
            lua_settable(L, -3);
          }
          lua_settable(L, -3);
        }
      }
      return 1;
    }
  }
  return 0;
}

static int config_get_btype(lua_State * L)
{
  const char *name = tolua_tostring(L, 1, 0);

  if (name) {
    const struct building_type *btype = bt_find(name);
    if (btype) {
      lua_newtable(L);
      lua_pushstring(L, "flags");
      lua_pushinteger(L, btype->flags);
      lua_settable(L, -3);
      if (btype->capacity > 0) {
        lua_pushstring(L, "capacity");
        lua_pushinteger(L, btype->capacity);
        lua_settable(L, -3);
      }
      if (btype->maxcapacity > 0) {
        lua_pushstring(L, "maxcapacity");
        lua_pushinteger(L, btype->maxcapacity);
        lua_settable(L, -3);
      }
      if (btype->maxsize > 0) {
        lua_pushstring(L, "maxsize");
        lua_pushinteger(L, btype->maxsize);
        lua_settable(L, -3);
      }
      if (btype->maintenance) {
        int i;
        lua_pushstring(L, "maintenance");
        lua_newtable(L);
        for (i = 0; btype->maintenance[i].number; ++i) {
          lua_pushstring(L,
              btype->maintenance[i].rtype->_name[0]);
          lua_pushinteger(L, btype->maintenance[i].number);
          lua_settable(L, -3);
        }
        lua_settable(L, -3);
      }
      if (btype->construction) {
        int i;
        lua_pushstring(L, "build_skill_min");
        lua_pushinteger(L, btype->construction->minskill);
        lua_settable(L, -3);
        lua_pushstring(L, "build_skill_name");
        lua_pushstring(L, skillnames[btype->construction->skill]);
        lua_settable(L, -3);
        if (btype->construction->materials) {
          lua_pushstring(L, "materials");
          lua_newtable(L);
          for (i = 0; btype->construction->materials[i].number; ++i) {
            lua_pushstring(L,
              btype->construction->materials[i].rtype->_name[0]);
            lua_pushinteger(L, btype->construction->materials[i].number);
            lua_settable(L, -3);
          }
          lua_settable(L, -3);
        }
      }
      return 1;
    }
  }
  return 0;
}

static int config_get_stype(lua_State * L)
{
  const char *name = tolua_tostring(L, 1, 0);

  if (name) {
    const struct ship_type *stype = st_find(name);
    if (stype) {
      lua_newtable(L);
      lua_pushstring(L, "range");
      lua_pushinteger(L, stype->range);
      lua_settable(L, -3);
      lua_pushstring(L, "cabins");
      lua_pushinteger(L, stype->cabins);
      lua_settable(L, -3);
      lua_pushstring(L, "cargo");
      lua_pushinteger(L, stype->cargo);
      lua_settable(L, -3);
      lua_pushstring(L, "cptskill");
      lua_pushinteger(L, stype->cptskill);
      lua_settable(L, -3);
      lua_pushstring(L, "minskill");
      lua_pushinteger(L, stype->minskill);
      lua_settable(L, -3);
      lua_pushstring(L, "sumskill");
      lua_pushinteger(L, stype->sumskill);
      lua_settable(L, -3);
      lua_pushstring(L, "fishing");
      lua_pushinteger(L, stype->fishing);
      lua_settable(L, -3);
      if (stype->coasts) {
        const terrain_type *coast = *stype->coasts;
        lua_pushstring(L, "coasts");
        lua_newtable(L);
        while(coast) {
          lua_pushstring(L, coast->_name);
          lua_pushinteger(L, 1);
          lua_settable(L, -3);
          coast = coast->next;
        }
      }
      if (stype->construction) {
        int i;
        lua_pushstring(L, "build_skill_min");
        lua_pushinteger(L, stype->construction->minskill);
        lua_settable(L, -3);
        lua_pushstring(L, "build_skill_name");
        lua_pushstring(L, skillnames[stype->construction->skill]);
        lua_settable(L, -3);
        if (stype->construction->materials) {
          lua_pushstring(L, "materials");
          lua_newtable(L);
          for (i = 0; stype->construction->materials[i].number; ++i) {
            lua_pushstring(L,
              stype->construction->materials[i].rtype->_name[0]);
            lua_pushinteger(L, stype->construction->materials[i].number);
            lua_settable(L, -3);
          }
          lua_settable(L, -3);
        }
      }
      return 1;
    }
  }
  return 0;
}

static int tolua_get_spell_text(lua_State * L)
{
  const struct locale *loc = default_locale;
  spell *self = (spell *) tolua_tousertype(L, 1, 0);
  lua_pushstring(L, spell_info(self, loc));
  return 1;
}

#ifdef TODO
static int tolua_get_spell_school(lua_State * L)
{
  spell *self = (spell *) tolua_tousertype(L, 1, 0);
  lua_pushstring(L, magic_school[self->magietyp]);
  return 1;
}

static int tolua_get_spell_level(lua_State * L)
{
  spell *self = (spell *) tolua_tousertype(L, 1, 0);
  lua_pushnumber(L, self->level);
  return 1;
}
#endif

static int tolua_get_spell_name(lua_State * L)
{
  const struct locale *lang = default_locale;
  spell *self = (spell *) tolua_tousertype(L, 1, 0);
  lua_pushstring(L, spell_name(self, lang));
  return 1;
}

static int tolua_get_spells(lua_State * L)
{
  return tolua_quicklist_push(L, "spell_list", "spell", spells);
}

int tolua_read_xml(lua_State * L)
{
  const char *filename = tolua_tostring(L, 1, "config.xml");
  const char *catalog = tolua_tostring(L, 2, "catalog.xml");
  lua_pushinteger(L, init_data(filename, catalog));
  return 1;
}

typedef struct event_args {
  int hfunction;
  int hargs;
  const char *sendertype;
} event_args;

static int tolua_report_unit(lua_State * L)
{
  char buffer[512];
  unit *u = (unit *) tolua_tousertype(L, 1, 0);
  faction *f = (faction *) tolua_tousertype(L, 2, 0);
  bufunit(f, u, 0, see_unit, buffer, sizeof(buffer));
  tolua_pushstring(L, buffer);
  return 1;
}

static void parse_inifile(lua_State * L, dictionary * d, const char *section)
{
  int i;
  size_t len = strlen(section);
  for (i = 0; d && i != d->n; ++i) {
    const char *key = d->key[i];
    if (strncmp(section, key, len) == 0 && key[len] == ':') {
      const char *str_value = d->val[i];
      char *endp;
      double num_value = strtod(str_value, &endp);
      lua_pushstring(L, key + len + 1);
      if (*endp) {
        tolua_pushstring(L, str_value);
      } else {
        tolua_pushnumber(L, num_value);
      }
      lua_rawset(L, -3);
    }
  }

  /* special case */
  lua_pushstring(L, "basepath");
  lua_pushstring(L, basepath());
  lua_rawset(L, -3);
  lua_pushstring(L, "reportpath");
  lua_pushstring(L, reportpath());
  lua_rawset(L, -3);
}

int tolua_bindings_open(lua_State * L)
{
  tolua_open(L);

  tolua_eressea_open(L);
  tolua_process_open(L);
  tolua_settings_open(L);
  tolua_config_open(L);

  /* register user types */
  tolua_usertype(L, TOLUA_CAST "spell");
  tolua_usertype(L, TOLUA_CAST "spell_list");
  tolua_usertype(L, TOLUA_CAST "order");
  tolua_usertype(L, TOLUA_CAST "item");
  tolua_usertype(L, TOLUA_CAST "alliance");
  tolua_usertype(L, TOLUA_CAST "event");
  tolua_usertype(L, TOLUA_CAST "faction_list");
  tolua_module(L, NULL, 0);
  tolua_beginmodule(L, NULL);
  {
    tolua_cclass(L, TOLUA_CAST "alliance", TOLUA_CAST "alliance",
      TOLUA_CAST "", NULL);
    tolua_beginmodule(L, TOLUA_CAST "alliance");
    {
      tolua_variable(L, TOLUA_CAST "name", tolua_get_alliance_name,
        tolua_set_alliance_name);
      tolua_variable(L, TOLUA_CAST "id", tolua_get_alliance_id, NULL);
      tolua_variable(L, TOLUA_CAST "factions", &tolua_get_alliance_factions,
        NULL);
      tolua_function(L, TOLUA_CAST "create", tolua_alliance_create);
    } tolua_endmodule(L);
    tolua_cclass(L, TOLUA_CAST "spell", TOLUA_CAST "spell", TOLUA_CAST "",
      NULL);
    tolua_beginmodule(L, TOLUA_CAST "spell");
    {
      tolua_function(L, TOLUA_CAST "__tostring", tolua_get_spell_name);
      tolua_variable(L, TOLUA_CAST "name", tolua_get_spell_name, 0);
#ifdef TODO
      tolua_variable(L, TOLUA_CAST "school", tolua_get_spell_school, 0);
      tolua_variable(L, TOLUA_CAST "level", tolua_get_spell_level, 0);
#endif
      tolua_variable(L, TOLUA_CAST "text", tolua_get_spell_text, 0);
    } tolua_endmodule(L);
    tolua_module(L, TOLUA_CAST "report", 1);
    tolua_beginmodule(L, TOLUA_CAST "report");
    {
      tolua_function(L, TOLUA_CAST "report_unit", &tolua_report_unit);
    } tolua_endmodule(L);
    tolua_module(L, TOLUA_CAST "config", 1);
    tolua_beginmodule(L, TOLUA_CAST "config");
    {
      parse_inifile(L, global.inifile, "config");
      tolua_variable(L, TOLUA_CAST "locales", &config_get_locales, 0);
      tolua_function(L, TOLUA_CAST "get_resource", &config_get_resource);
      tolua_variable(L, TOLUA_CAST "buildings", &config_get_buildings, 0);
      tolua_function(L, TOLUA_CAST "get_building", &config_get_btype);
      tolua_variable(L, TOLUA_CAST "ships", &config_get_ships, 0);
      tolua_function(L, TOLUA_CAST "get_ship", &config_get_stype);
    } tolua_endmodule(L);
    tolua_function(L, TOLUA_CAST "get_region_by_id", tolua_get_region_byid);
    tolua_function(L, TOLUA_CAST "get_faction", tolua_get_faction);
    tolua_function(L, TOLUA_CAST "get_unit", tolua_get_unit);
    tolua_function(L, TOLUA_CAST "get_alliance", tolua_get_alliance);
    tolua_function(L, TOLUA_CAST "get_ship", tolua_get_ship);
    tolua_function(L, TOLUA_CAST "get_building", tolua_get_building);
    tolua_function(L, TOLUA_CAST "get_region", tolua_get_region);
    tolua_function(L, TOLUA_CAST "factions", tolua_get_factions);
    tolua_function(L, TOLUA_CAST "regions", tolua_get_regions);
    tolua_function(L, TOLUA_CAST "read_turn", tolua_read_turn);
    tolua_function(L, TOLUA_CAST "write_map", &tolua_write_map);
    tolua_function(L, TOLUA_CAST "read_orders", tolua_read_orders);
    tolua_function(L, TOLUA_CAST "process_orders", tolua_process_orders);
    tolua_function(L, TOLUA_CAST "init_reports", tolua_init_reports);
    tolua_function(L, TOLUA_CAST "write_reports", tolua_write_reports);
    tolua_function(L, TOLUA_CAST "write_report", tolua_write_report);
    tolua_function(L, TOLUA_CAST "init_summary", tolua_init_summary);
    tolua_function(L, TOLUA_CAST "write_summary", tolua_write_summary);
    tolua_function(L, TOLUA_CAST "write_passwords", tolua_write_passwords);
    tolua_function(L, TOLUA_CAST "message_unit", tolua_message_unit);
    tolua_function(L, TOLUA_CAST "message_faction", tolua_message_faction);
    tolua_function(L, TOLUA_CAST "message_region", tolua_message_region);

    /* scripted monsters */
    tolua_function(L, TOLUA_CAST "spawn_braineaters", tolua_spawn_braineaters);

    tolua_function(L, TOLUA_CAST "update_guards", tolua_update_guards);
    tolua_function(L, TOLUA_CAST "set_turn", &tolua_set_turn);
    tolua_function(L, TOLUA_CAST "get_turn", &tolua_get_turn);
    tolua_function(L, TOLUA_CAST "get_season", tolua_get_season);
    tolua_function(L, TOLUA_CAST "equipment_setitem", tolua_equipment_setitem);
    tolua_function(L, TOLUA_CAST "equip_unit", tolua_equipunit);
    tolua_function(L, TOLUA_CAST "add_equipment", tolua_addequipment);
    tolua_function(L, TOLUA_CAST "atoi36", tolua_atoi36);
    tolua_function(L, TOLUA_CAST "itoa36", tolua_itoa36);
    tolua_function(L, TOLUA_CAST "dice_roll", tolua_dice_rand);
    tolua_function(L, TOLUA_CAST "get_nmrs", tolua_get_nmrs);
    tolua_function(L, TOLUA_CAST "remove_empty_units", tolua_remove_empty_units);
    tolua_function(L, TOLUA_CAST "update_subscriptions", tolua_update_subscriptions);
    tolua_function(L, TOLUA_CAST "update_scores", tolua_update_scores);
    tolua_function(L, TOLUA_CAST "update_owners", tolua_update_owners);
    tolua_function(L, TOLUA_CAST "learn_skill", tolua_learn_skill);
    tolua_function(L, TOLUA_CAST "create_curse", tolua_create_curse);
    tolua_function(L, TOLUA_CAST "autoseed", tolua_autoseed);
    tolua_function(L, TOLUA_CAST "get_key", tolua_getkey);
    tolua_function(L, TOLUA_CAST "set_key", tolua_setkey);
    tolua_function(L, TOLUA_CAST "translate", &tolua_translate);
    tolua_function(L, TOLUA_CAST "rng_int", tolua_rng_int);
    tolua_function(L, TOLUA_CAST "spells", tolua_get_spells);
#ifdef WRITE_SPELLS
    tolua_function(L, TOLUA_CAST "write_spells", tolua_write_spells);
#endif
    tolua_function(L, TOLUA_CAST "read_xml", tolua_read_xml);
  } tolua_endmodule(L);
  return 1;
}

static void openlibs(lua_State * L)
{
  luaL_openlibs(L);
}

void lua_done(lua_State * L) {
  lua_close(L);
}

lua_State *lua_init(void) {
  lua_State *L = luaL_newstate();

  openlibs(L);
  register_tolua_helpers();
  tolua_bindings_open(L);
  tolua_eressea_open(L);
#ifdef USE_SQLITE
  tolua_sqlite_open(L);
#endif
  tolua_unit_open(L);
  tolua_building_open(L);
  tolua_ship_open(L);
  tolua_region_open(L);
  tolua_faction_open(L);
  tolua_unit_open(L);
  tolua_message_open(L);
  tolua_hashtable_open(L);
#ifdef USE_CURSES
  tolua_gmtool_open(L);
#endif
  tolua_storage_open(L);
  return L;
}

int eressea_run(lua_State *L, const char *luafile)
{
    int err = 0;

    global.vm_state = L;
    /* run the main script */
    if (luafile) {
        log_debug("executing script %s\n", luafile);

        lua_getglobal(L, "debug");
        lua_getfield(L, -1, "traceback");
        lua_remove(L, -2);
        lua_getglobal(L, "dofile");
        lua_pushstring(L, luafile);
        err = lua_pcall(L, 1, 1, -3);
        if (err != 0) {
            log_lua_error(L);
        } else  {
            if (lua_isnumber(L, -1)) {
                err = (int)lua_tonumber(L, -1);
            }
            lua_pop(L, 1);
        }
        return err;
    }
    return lua_console(L);
}