#pragma once
// Species selection for wild spawns (habitat, rarity, zone type weights and
// time/weather conditions) and the weather Markov chain.

#include "Protocol.h"
#include "Rng.h"
#include "Roster.h"

#include <string>
#include <vector>

namespace bs {

enum class SpawnHabitat { Land = 0, Water = 1 };

inline bool isNight(float hour) { return hour < 5.5f || hour > 19.5f; }

class SpawnTables {
public:
    // Rebuilds the cumulative tables when (night, weather) differs from the cached condition.
    void update(const Roster& roster, const std::string& zoneId, float hour, Weather weather);
    // Returns false when no species fits the habitat.
    bool pick(Rng& rng, SpawnHabitat h, uint16_t& species) const;

private:
    struct Table {
        std::vector<float> cumulative;
        std::vector<uint16_t> ids;
    };
    Table tables_[2];
    int key_ = -1;
    const Roster* roster_ = nullptr;
};

// Next weather state; called every 3-8 real minutes.
Weather nextWeather(Rng& rng, Weather current, float hour);

}  // namespace bs