#pragma once

#include <array>
#include <string>

#include "event_bus.h"
#include "key_value_store.h"

namespace roro {

enum class Setting : uint8_t {
    SetupDone,        // bool: first-boot wizard completed
    LongName,         // string, 1..39 bytes
    ShortName,        // string, 1..4 bytes
    Region,           // string, a known Region ("EU868")
    RegionConfirmed,  // bool: nothing transmits until true
    Timezone,         // string, POSIX TZ
    Brightness,       // int, 10..100 %
    DimTimeoutS,      // int, 5..600, below OffTimeoutS
    OffTimeoutS,      // int, 10..3600, above DimTimeoutS
    Sound,            // bool
    ProbeMacRaw,      // bool: probe-request Logs keep raw MAC addresses
    WifiEnabled,      // bool: the Wi-Fi Service stays Connected when a Saved Network is in range
    GnssEnabled,      // bool: the GNSS Service reads the receiver (M2, Q58)
    CoordinatesDms,   // bool: show degrees, minutes and seconds instead of decimal degrees (Q64)
    LoraPreset,       // int: the LoRa Scanner's Meshtastic preset, an index into the EU868 list (M3, Q95)
    Dns1,             // string: the first DNS server, an IPv4 address (S1, Q108, Q109)
    Dns2,             // string: the second, or empty
    DnsAlways,        // bool: use them on Automatic (DHCP) networks too, instead of DHCP's
    Ntp1,             // string: the first NTP server, a host name or an IPv4 address (S1, Q110)
    Ntp2,             // string: the second, or empty
    GnssQuietForLora, // bool: put the GNSS receiver in standby while the LoRa radio listens (issue #20)
    CheckUpdates,     // bool: look for a newer release on Gitea once a day (R1, Q165)
    Count
};

// Typed, validated settings in internal flash. Every accepted change is persisted immediately and
// announced with a SettingChanged event; rejected values leave the current value untouched.
class Settings {
   public:
    Settings(KeyValueStore& store, EventBus& bus);

    // Reads every setting; missing or invalid stored values fall back to defaults.
    void load();

    int32_t getInt(Setting s) const;
    bool getBool(Setting s) const;
    const std::string& getString(Setting s) const;

    bool setInt(Setting s, int32_t value);
    bool setBool(Setting s, bool value);
    bool setString(Setting s, const std::string& value);

    bool canTransmit() const { return getBool(Setting::RegionConfirmed); }

    static const char* key(Setting s);

   private:
    struct Value {
        int32_t i = 0;
        std::string str;
    };

    bool validInt(Setting s, int32_t value) const;
    bool validString(Setting s, const std::string& value) const;
    void changed(Setting s);

    KeyValueStore& store_;
    EventBus& bus_;
    std::array<Value, static_cast<size_t>(Setting::Count)> values_;
};

}  // namespace roro