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#include "spellcasting.h"
#include "creature.h"
#include "utils.h"
#include <string>
#include <sstream>
#include <vector>

using namespace std;

namespace entry {
    shared_ptr<SlotLevel> SlotLevel::create(const json& data) {
        return shared_ptr<SlotLevel>(new SlotLevel(data));
    }

    vector<shared_ptr<Spell>> Spellcasting::getSpells() const {
        vector<shared_ptr<Spell>> ret;
        for(auto sl : getSlotLevels()) {
            for(auto spell : sl->spells) {
                ret.push_back(spell);
            }
        }
        return ret;
    }

    string Spellcasting::getText(const creature::Creature& c) const {
        return genText(*this, c);
    }

    string genText(const Spellcasting& s, const creature::Creature& c) {
        stringstream text;
        text << genText(static_cast<const Feature&>(s), c);
        text << ": The " << c.getCreatureName() << "'s spellcasting ability is " << s.getAbility().getFull();
        text << " (spell save DC " << 8 + c.getBonus(s.getAbility()) + c.getProficiency();
        text << ", +" << c.getBonus(s.getAbility()) + c.getProficiency() << " to hit with spell attacks).";
        if(s.isInnate()) {
            text << " Spellcasting is innate.";
        }
        int levelNumber = -1;
        for(auto level : s.getSlotLevels()) {
            levelNumber++;
            // Skip if it's empty
            if(level->numSlots == 0 && level->spells.empty()) {
                continue;
            }
            text << endl;
            if(levelNumber == 0) {
                if(s.isInnate()) {
                    text << "    At will: ";
                } else {
                    text << "    Cantrips: ";
                }
            } else {
                if(s.isInnate()) {
                    text << "    " << level->numSlots << "/day each: ";
                } else {
                    text << "    " << utils::toOrdinal(levelNumber) << " level (" << level->numSlots << " slots): ";
                }
            }
            vector<string> names;
            for(auto spell : level->spells) {
                names.push_back(spell->getName());
            }
            text << utils::join(names, ", ");
        }

        return text.str();
    }
}