/*

 * Hedgewars, a free turn based strategy game

 * Copyright (C) 2012 Simeon Maxein <smaxein@googlemail.com>

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

 */

#include "weapon.h"

#include "../util/inihelper.h"

#include "../util/logging.h"

#include "../util/util.h"

#include "../util/list.h"

#include <stdlib.h>

#include <ctype.h>

#include <string.h>

static void setField(char field[WEAPONS_COUNT+1], const char *line, int lineLen, bool no9) {

    if(lineLen>WEAPONS_COUNT) {

        lineLen = WEAPONS_COUNT;

    }

    char min = '0';

    char max = no9 ? '8' : '9';

    for(int i=0; i<lineLen; i++) {

        if(line[i] >= min && line[i] <= max) {

            field[i] = line[i];

        } else {

            flib_log_w("Invalid character in weapon config string \"%.*s\", position %i", lineLen, line, i);

            field[i] = '0';

        }

    }

    for(int i=lineLen; i<WEAPONS_COUNT; i++) {

        field[i] = '0';

    }

    field[WEAPONS_COUNT] = 0;

}

flib_weaponset *flib_weaponset_create(const char *name) {

    flib_weaponset *result = NULL;

    if(!log_badargs_if(name==NULL)) {

        flib_weaponset *newSet = flib_calloc(1, sizeof(flib_weaponset));

        if(newSet) {

            newSet->name = flib_strdupnull(name);

            if(newSet->name) {

                setField(newSet->loadout, "", 0, false);

                setField(newSet->crateprob, "", 0, false);

                setField(newSet->crateammo, "", 0, false);

                setField(newSet->delay, "", 0, false);

                result = newSet;

                newSet = NULL;

            }

        }

        flib_weaponset_destroy(newSet);

    }

    return result;

}

void flib_weaponset_destroy(flib_weaponset *cfg) {

    if(cfg) {

        free(cfg->name);

        free(cfg);

    }

}

flib_weaponset *flib_weaponset_copy(const flib_weaponset *weaponset) {

    if(!weaponset) {

        return NULL;

    }

    flib_weaponset *result = flib_weaponset_create(weaponset->name);

    if(result) {

        memcpy(result->loadout, weaponset->loadout, WEAPONS_COUNT+1);

        memcpy(result->crateprob, weaponset->crateprob, WEAPONS_COUNT+1);

        memcpy(result->delay, weaponset->delay, WEAPONS_COUNT+1);

        memcpy(result->crateammo, weaponset->crateammo, WEAPONS_COUNT+1);

    }

    return result;

}

void flib_weaponsetlist_destroy(flib_weaponsetlist *list) {

    if(list) {

        for(int i=0; i<list->weaponsetCount; i++) {

            flib_weaponset_destroy(list->weaponsets[i]);

        }

        free(list->weaponsets);

        free(list);

    }

}

flib_weaponset *flib_weaponset_from_ammostring(const char *name, const char *ammostring) {

    flib_weaponset *result = NULL;

    if(!log_badargs_if2(name==NULL, ammostring==NULL)) {

        result = flib_weaponset_create(name);

        if(result) {

            int fieldlen = strlen(ammostring)/4;

            setField(result->loadout, ammostring, fieldlen, false);

            setField(result->crateprob, ammostring + fieldlen, fieldlen, true);

            setField(result->delay, ammostring + 2*fieldlen, fieldlen, true);

            setField(result->crateammo, ammostring + 3*fieldlen, fieldlen, true);

        }

    }

    return result;

}

static int fillWeaponsetFromIni(flib_weaponsetlist *list, flib_ini *ini, int index) {

    int result = -1;

    char *keyname = flib_ini_get_keyname(ini, index);

    char *decodedKeyname = flib_urldecode(keyname);

    char *ammostring = NULL;

    if(decodedKeyname && !flib_ini_get_str(ini, &ammostring, keyname)) {

        flib_weaponset *set = flib_weaponset_from_ammostring(decodedKeyname, ammostring);

        if(set) {

            result = flib_weaponsetlist_insert(list, set, list->weaponsetCount);

            if(result) {

                flib_weaponset_destroy(set);

            }

        }

    }

    free(ammostring);

    free(decodedKeyname);

    free(keyname);

    return result;

}

static int fillWeaponsetsFromIni(flib_weaponsetlist *list, flib_ini *ini) {

    bool error = false;

    int weaponsets = flib_ini_get_keycount(ini);

    for(int i=0; i<weaponsets && !error; i++) {

        error |= fillWeaponsetFromIni(list, ini, i);

    }

    return error;

}

flib_weaponsetlist *flib_weaponsetlist_from_ini(const char *filename) {

    flib_weaponsetlist *result = NULL;

    if(!log_badargs_if(filename==NULL)) {

        flib_ini *ini = flib_ini_load(filename);

        if(!ini) {

            flib_log_e("Missing file %s.", filename);

        } else if(flib_ini_enter_section(ini, "General")) {

            flib_log_e("Missing section \"General\" in file %s.", filename);

        } else {

            flib_weaponsetlist *tmpList = flib_weaponsetlist_create();

            if(tmpList && !fillWeaponsetsFromIni(tmpList, ini)) {

                result = tmpList;

                tmpList = NULL;

            }

            flib_weaponsetlist_destroy(tmpList);

        }

        flib_ini_destroy(ini);

    }

    return result;

}

static bool needsEscape(char c) {

    return !((c>='0' && c<='9') || (c>='a' && c <='z'));

}

static int writeWeaponsetToIni(flib_ini *ini, flib_weaponset *set) {

    int result = -1;

    char weaponstring[WEAPONS_COUNT*4+1];

    strcpy(weaponstring, set->loadout);

    strcat(weaponstring, set->crateprob);

    strcat(weaponstring, set->delay);

    strcat(weaponstring, set->crateammo);

    char *escapedname = flib_urlencode_pred(set->name, needsEscape);

    if(escapedname) {

        result = flib_ini_set_str(ini, escapedname, weaponstring);

    }

    free(escapedname);

    return result;

}

int flib_weaponsetlist_to_ini(const char *filename, const flib_weaponsetlist *list) {

    int result = -1;

    if(!log_badargs_if2(filename==NULL, list==NULL)) {

        flib_ini *ini = flib_ini_create(NULL);

        if(ini && !flib_ini_create_section(ini, "General")) {

            bool error = false;

            for(int i=0; i<list->weaponsetCount && !error; i++) {

                error |= writeWeaponsetToIni(ini, list->weaponsets[i]);

            }

            if(!error) {

                result = flib_ini_save(ini, filename);

            }

        }

        flib_ini_destroy(ini);

    }

    return result;

}

flib_weaponsetlist *flib_weaponsetlist_create() {

    return flib_calloc(1, sizeof(flib_weaponsetlist));

}

GENERATE_STATIC_LIST_INSERT(insertWeaponset, flib_weaponset*)

GENERATE_STATIC_LIST_DELETE(deleteWeaponset, flib_weaponset*)

int flib_weaponsetlist_insert(flib_weaponsetlist *list, flib_weaponset *set, int pos) {

    if(!log_badargs_if2(list==NULL, set==NULL)

            && !insertWeaponset(&list->weaponsets, &list->weaponsetCount, set, pos)) {

        return 0;

    }

    return -1;

}

int flib_weaponsetlist_delete(flib_weaponsetlist *list, int pos) {

    if(!log_badargs_if(list==NULL)) {

        flib_weaponset *elem = list->weaponsets[pos];

        if(!deleteWeaponset(&list->weaponsets, &list->weaponsetCount, pos)) {

            flib_weaponset_destroy(elem);

            return 0;

        }

    }

    return -1;

}