/*
 * This file is part of RuneOptimizer.
 *
 * RuneOptimizer 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 3 of the License, or (at your option)
 * any later version.
 *
 * RuneOptimizer 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
 * RuneOptimizer. If not, see <https://www.gnu.org/licenses/>.
 */

/**
 * @file runeoptimizer.h
 *
 * Declarations of the functions and data types used across the application.
 *
 * This file declares all the functions and data types used from anywhere in the
 * program.
 */

#pragma once

#include <sqlite3.h>

/**
 * Application version.
 *
 * Metadata, only used in the help and version commands.
 */
#define VERSION "0.1-RC1"

/**
 * Application author.
 *
 * Metadata, only used in the help command.
 */
#define AUTHOR "Iñigo Valentin"

/**
 * Application author email.
 *
 * Metadata, only used in the help command.
 */
#define MAIL "i@inigovalentin.com"

/**
 * Boolean value TRUE.
 *
 * Mocked boolean for consistence across functions.
 */
#define TRUE 1

/**
 * Boolean value FALSE.
 *
 * Mocked boolean for consistence across functions.
 */
#define FALSE 0

/**
 * Energy Set.
 *
 * Set ID of Energy runes, as given by Com2Us.
 */
#define ENERGY 1

/**
 * Guard Set.
 *
 * Set ID of Guard runes, as given by Com2Us.
 */
#define GUARD 2

/**
 * Swift Set.
 *
 * Set ID of Swift runes, as given by Com2Us.
 */
#define SWIFT 3

/**
 * Blade Set.
 *
 * Set ID of Blade runes, as given by Com2Us.
 */
#define BLADE 4

/**
 * Rage Set.
 *
 * Set ID of Rage runes, as given by Com2Us.
 */
#define RAGE 5

/**
 * Focus Set.
 *
 * Set ID of Focus runes, as given by Com2Us.
 */
#define FOCUS 6

/**
 * Endure Set.
 *
 * Set ID of Endure runes, as given by Com2Us.
 */
#define ENDURE 7

/**
 * Fatal Set.
 *
 * Set ID of Fatal runes, as given by Com2Us.
 */
#define FATAL 8

/**
 * Despair Set.
 *
 * Set ID of Despair runes, as given by Com2Us.
 */
#define DESPAIR 10

/**
 * Vampire Set.
 *
 * Set ID of Vampire runes, as given by Com2Us.
 */
#define VAMPIRE 11

/**
 * Violent Set.
 *
 * Set ID of Violent runes, as given by Com2Us.
 */
#define VIOLENT 13

/**
 * Nemesis Set.
 *
 * Set ID of Nemesis runes, as given by Com2Us.
 */
#define NEMESIS 14

/**
 * Will Set.
 *
 * Set ID of Will runes, as given by Com2Us.
 */
#define WILL 15

/**
 * Shield Set.
 *
 * Set ID of Shield runes, as given by Com2Us.
 */
#define SHIELD 16

/**
 * Revenge Set.
 *
 * Set ID of Revenge runes, as given by Com2Us.
 */
#define REVENGE 17

/**
 * Destroy Set.
 *
 * Set ID of Destroy runes, as given by Com2Us.
 */
#define DESTROY 18

/**
 * Fight Set.
 *
 * Set ID of Fight runes, as given by Com2Us.
 */
#define FIGHT 19

/**
 * Determination Set.
 *
 * Set ID of Determination runes, as given by Com2Us.
 */
#define DETERMINATION 20

/**
 * Enhance Set.
 *
 * Set ID of Enhance runes, as given by Com2Us.
 */
#define ENHANCE 21

/**
 * Accuracy Set.
 *
 * Set ID of Accuracy runes, as given by Com2Us.
 */
#define ACCURACY 22

/**
 * Tolerance Set.
 *
 * Set ID of Tolerance runes, as given by Com2Us.
 */
#define TOLERANCE 23


/**
 * HP rune stat.
 *
 * Rune stat ID for HP in runes, as given by Com2Us.
 */
#define HP_FLAT 1

/**
 * HP% rune stat.
 *
 * Rune stat ID for HP% in runes, as given by Com2Us.
 */
#define HP_PERCENT 2

/**
 * ATK rune stat.
 *
 * Rune stat ID for ATK in runes, as given by Com2Us.
 */
#define ATK_FLAT 3

/**
 * ATK% rune stat.
 *
 * Rune stat ID for ATK% in runes, as given by Com2Us.
 */
#define ATK_PERCENT 4

/**
 * DEF rune stat.
 *
 * Rune stat ID for DEF in runes, as given by Com2Us.
 */
#define DEF_FLAT 5

/**
 * DEF% rune stat.
 *
 * Rune stat ID for DEF% in runes, as given by Com2Us.
 */
#define DEF_PERCENT 6

/**
 * SPD rune stat.
 *
 * Rune stat ID for SPD in runes, as given by Com2Us.
 */
#define SPD 8

/**
 * CRR rune stat.
 *
 * Rune stat ID for CRR in runes, as given by Com2Us.
 */
#define CRR 9

/**
 * CRD rune stat.
 *
 * Rune stat ID for CRD in runes, as given by Com2Us.
 */
#define CRD 10

/**
 * RES rune stat.
 *
 * Rune stat ID for RES in runes, as given by Com2Us.
 */
#define RES 11

/**
 * ACC rune stat.
 *
 * Rune stat ID for ACC in runes, as given by Com2Us.
 */
#define ACC 12

/**
 * Maximum length of Unit IDs.
 *
 * It can never be higher thahn this.
 */
#define UNIT_ID_LEN 14

/**
 * Maximum length of Unit name.
 *
 * It can never be higher thahn this.
 */
#define UNIT_NAME_LEN 128

/**
 * Maximum length of Rune IDs.
 *
 * It can never be higher thahn this.
 */
#define RUNE_ID_LEN 14

/**
 * Maximum length of Teams IDs.
 *
 * It can never be higher thahn this.
 */
#define TEAM_ID_LEN 4

/**
 * Length for the database file path.
 *
 * Totally arbitrary.
 * @todo This may be worriesome.
 */
#define DB_PATH_LEN 512

/**
 * Rune slots.
 *
 * Number of rune slots. In-game, and in many parts of this program, slots are
 * used with a 1-index.
 */
#define RUNE_SLOTS 6

/**
 * CRR Cap.
 *
 * Critical rate does nothing over 100%, so for more realistic calcultations,
 * it's better to have it capped.
 */
#define CRR_CAP 100.0f

/**
 * RES Cap.
 *
 * Resistance does nothing over 100%, so for more realistic calcultations, it's
 * better to have it capped.
 */
#define RES_CAP 100.0f

/**
 * ACC Cap.
 *
 * In the game, accurary is effectively capped at 85%, so for more realistic
 * calcultations, it's better to have it capped.
 */
#define ACC_CAP 85.0f

/**
 * Number of stats defined in the game.
 *
 * It's not actually 13, because 0 and 7 are never used in game, but is a good
 * value for counters and loops.
 */
#define DIFFERENT_STATS 13

/**
 * Number of rune sets defined in the game.
 *
 * It's not actually 25, because 0, 9 and 12 are never used in game, but is a
 * good value for counters and loops.
 */
#define DIFFERENT_SETS 25

/**
 * Number of rune sets defined in the game.
 *
 * It's not actually 26, because a lot of them are never used in game, but is a
 * good value for counters and loops.
 */
#define DIFFERENT_QUALITIES 16

/**
 * Rune max stars.
 *
 * Watch out, a rune can't have 0 stars, so in loos, better start at 1.
 */
#define RUNE_MAX_STARS 6

/**
 * Structure representing a unit.
 *
 * Represents an entity from the table 'unit', but is doesn't have that mucha
 * data, just the mambers needed for optimization and some other thigs. For a
 * more complete representation of the table, {@link DB_Unit} can be used.
 */
typedef struct Unit {
    /**
     * Unit ID.
     *
     * The ID as given by Com2Us.
     */
    unsigned char id[UNIT_ID_LEN];

    /**
     * The Unit name.
     *
     * The name as given by Com2Us, except for Homunculus. For them, the user
     * given by the naem will be used.
     */
    unsigned char name[UNIT_NAME_LEN];

    /**
     * The unit base HP.
     *
     * The Unit HP, at it's current level, without counting runes, artifacts,
     * towers...
     */
    unsigned int base_hp;

    /**
     * The unit base ATK.
     *
     * The Unit ATK, at it's current level, without counting runes, artifacts,
     * towers...
     */
    unsigned short base_atk;

    /**
     * The unit base DEF.
     *
     * The Unit DEF, at it's current level, without counting runes, artifacts,
     * towers...
     */
    unsigned short base_def;

    /**
     * The unit base SPD.
     *
     * The Unit SPD, at it's current level, without counting runes, artifacts,
     * towers...
     */
    unsigned short base_spd;

    /**
     * The unit base CRR.
     *
     * The Unit CRR, at it's current level, without counting runes, artifacts,
     * towers...
     */
    unsigned short base_crr;

    /**
     * The unit base CRD.
     *
     * The Unit CRD, at it's current level, without counting runes, artifacts,
     * towers...
     */
    unsigned short base_crd;

    /**
     * The unit base RES.
     *
     * The Unit RES, at it's current level, without counting runes, artifacts,
     * towers...
     */
    unsigned short base_res;

    /**
     * The unit base ACC.
     *
     * The Unit ACC, at it's current level, without counting runes, artifacts,
     * towers...
     */
    unsigned short base_acc;

    /**
     * The unit base EHP.
     *
     * The Unit EHP, at it's current level, without counting runes, artifacts,
     * towers... See {@link calculate_ehp} for more details bout EHP.
     */
    unsigned int base_ehp;

    /**
     * The unit base DMG.
     *
     * The Unit DMG, at it's current level, without counting runes, artifacts,
     * towers...See {@link calculate_ehp} for more details bout EHP.
     */
    unsigned short base_dmg;

    /**
     * The unit base HP.
     *
     * The Unit HP, at it's current level, counting equiped runes, but not
     * artifacts or towers.
     */
    unsigned int current_hp;

    /**
     * The unit base ATK.
     *
     * The Unit ATK, at it's current level, counting equiped runes, but not
     * artifacts or towers.
     */
    unsigned short current_atk;

    /**
     * The unit base DEF.
     *
     * The Unit DEF, at it's current level, counting equiped runes, but not
     * artifacts or towers.
     */
    unsigned short current_def;

    /**
     * The unit base SPD.
     *
     * The Unit SPD, at it's current level, counting equiped runes, but not
     * artifacts or towers.
     */
    unsigned short current_spd;

    /**
     * The unit base CRR.
     *
     * The Unit CRR, at it's current level, counting equiped runes, but not
     * artifacts or towers.
     */
    unsigned short current_crr;

    /**
     * The unit base CRD.
     *
     * The Unit CRD, at it's current level, counting equiped runes, but not
     * artifacts or towers.
     */
    unsigned short current_crd;

    /**
     * The unit base RES.
     *
     * The Unit RES, at it's current level, counting equiped runes, but not
     * artifacts or towers.
     */
    unsigned short current_res;

    /**
     * The unit base ACC.
     *
     * The Unit ACC, at it's current level, counting equiped runes, but not
     * artifacts or towers.
     */
    unsigned short current_acc;

    /**
     * The unit base EHP.
     *
     * The Unit EHP, at it's current level, counting equiped runes, but not
     * artifacts or towers.See {@link calculate_ehp} for more details bout EHP.
     */
    unsigned int current_ehp;

    /**
     * The unit base DMG.
     *
     * The Unit DMG, at it's current level, counting equiped runes, but not
     * artifacts or towers. See {@link calculate_ehp} for more details bout EHP.
     */
    unsigned short current_dmg;
} Unit;

/**
 * Number of runes for a given list of runes.
 *
 * It just holds numbers of rune sets. See {@link optimize_count_runes_for_sets}
 * for a use case.
 */
typedef struct Rune_Set_Count {

    /**
     * Energy count.
     *
     * Number of Energy runes.
     */
    unsigned short energy;

    /**
     * Guard count.
     *
     * Number of Guard runes.
     */
    unsigned short guard;

    /**
     * Swift count.
     *
     * Number of Swift runes.
     */
    unsigned short swift;

    /**
     * Blade count.
     *
     * Number of Blade runes.
     */
    unsigned short blade;

    /**
     * Rage count.
     *
     * Number of Rage runes.
     */
    unsigned short rage;

    /**
     * Focus count.
     *
     * Number of Focus runes.
     */
    unsigned short focus;

    /**
     * Endure count.
     *
     * Number of Endure runes.
     */
    unsigned short endure;

    /**
     * Fatal count.
     *
     * Number of Fatal runes.
     */
    unsigned short fatal;

    /**
     * Despair count.
     *
     * Number of Despair runes.
     */
    unsigned short despair;

    /**
     * Vampire count.
     *
     * Number of Vampire runes.
     */
    unsigned short vampire;

    /**
     * Violent count.
     *
     * Number of Violent runes.
     */
    unsigned short violent;

    /**
     * Nemesis count.
     *
     * Number of Nemesis runes.
     */
    unsigned short nemesis;

    /**
     * Will count.
     *
     * Number of Will runes.
     */
    unsigned short will;

    /**
     * Shield count.
     *
     * Number of Shield runes.
     */
    unsigned short shield;

    /**
     * Revenge count.
     *
     * Number of Revenge runes.
     */
    unsigned short revenge;

    /**
     * Destroy count.
     *
     * Number of Destroy runes.
     */
    unsigned short destroy;

    /**
     * Fight count.
     *
     * Number of Fight runes.
     */
    unsigned short fight;

    /**
     * Determination count.
     *
     * Number of Determination runes.
     */
    unsigned short determination;

    /**
     * Enhance count.
     *
     * Number of Enhance runes.
     */
    unsigned short enhance;

    /**
     * Accuracy count.
     *
     * Number of Accuracy runes.
     */
    unsigned short accuracy;

    /**
     * Tolerance count.
     *
     * Number of Tolerance runes.
     */
    unsigned short tolerance;
} Rune_Set_Count;

/**
 * Names for run stats.
 *
 * Indexed by Com2Us ID. Watch out for indexes 0 and 7, they are undefined in
 * the game.
 */
extern const char STAT_NAMES[DIFFERENT_STATS][9];

/**
 * Names for rune sets.
 *
 * Indexed by Com2Us ID.Watch out for indexes 0, 9 and 12, they are undefined in
 * the game.
 */
extern const char SET_NAMES[DIFFERENT_SETS][9];

/**
 * Names for rune qualities.
 *
 * Indexed by Com2Us ID. 1-5 are qualities for normal runes, 11-15 for ancient
 * runes. All the others are not defined in the game,
 */
extern const char QUALITY_NAMES[DIFFERENT_QUALITIES][9];

/**
 * Names for rune stats, in a printable format.
 *
 * They hold a 4 digit stat, padded to the right, with a percent sign on the
 * right for the stats that are percentual. All padded to the right with a
 * single space, for a total length of 10 characters.
 *
 * Indexed by Com2Us ID. Watch out for indexes 0 and 7, they are undefined in
 * the game.
 */
extern const char STAT_NAMES_PRINTABLE[DIFFERENT_STATS][12];

/**
 * Names for rune sets.
 *
 * Thy don't indicate if it's for a flat or a percentile stat.
 *
 * Indexed by Com2Us ID.Watch out for indexes 0, 9 and 12, they are undefined in
 * the game.
 */
extern const char STAT_NAMES_UNSIGNED[DIFFERENT_STATS][4];

/**
 * Max roll values for each stat.
 *
 * Used for efficiency calculations. Indexed by
 * - Stat id (indexes 0 and 7 undefined in game).
 * - Rune stars (1-6, dont use index 0).
 *
 * @todo For ancient runes, the initial rolls are higher.
 */
extern const int STAT_ROLL_MAX[DIFFERENT_STATS][RUNE_MAX_STARS + 1];

/**
 * Global database connection.
 *
 * Used across the app. Opened in {@link db_open}.
 */
extern sqlite3 *db;

/**
 * Path to the database.
 *
 * When possible, use be an absolute path.
 */
extern char db_location[DB_PATH_LEN];

/**
 * Calculates effective HP.
 *
 * EHP is a complex stat, depending on HP and DEF. In short, the formula is
 * ((( def * 3.5) + 1140) * hp) / 1000 .
 *
 * @param[in] hp HP stat.
 * @param[in] def DEF stat.
 * @return Calculated EHP.
 */
extern unsigned int calculate_ehp(unsigned int hp, unsigned short def);

/**
 * Calculates damage.
 *
 * DMG is a complex stat, depending on ATK, CRR and CRD. In short, the formula
 * is
 * (atk * ((100 - crr) / 100)) +  (atk * (crr / 100) * ((100 + crd) / 100)) .
 *
 * @param[in] atk ATK stat.
 * @param[in] crr CRR stat.
 * @param[in] crd CRD stat.
 * @return Calculated DMG.
 */
extern unsigned short calculate_dmg(
  unsigned short atk, unsigned short crr, unsigned short crd
);

/**
 * Starts the program.
 *
 * Reads command line parameters and runs the appropiate command.
 *
 * @param argc Number of arguments passed to the program.
 * @param argv Arguments passed to the program.
 * @return SUCCESS on success, other on error. Most errors are listed in
 * <a href="file:../error/error.h">../error/error.h</a>
 */
int main(int argc, char *argv[]);