/*
 * Copyright 2023 jacqueline <me@jacqueline.id.au>
 *
 * SPDX-License-Identifier: GPL-3.0-only
 */

#pragma once

#include <memory>

#include "audio/track_queue.hpp"
#include "battery/battery.hpp"
#include "collation.hpp"
#include "database/database.hpp"
#include "database/tag_parser.hpp"
#include "drivers/bluetooth.hpp"
#include "drivers/gpios.hpp"
#include "drivers/haptics.hpp"
#include "drivers/nvs.hpp"
#include "drivers/samd.hpp"
#include "drivers/storage.hpp"
#include "drivers/touchwheel.hpp"
#include "tasks.hpp"
#include "tts/provider.hpp"

namespace system_fsm {

class ServiceLocator {
 public:
  ServiceLocator();

  auto gpios() -> drivers::Gpios& {
    assert(gpios_ != nullptr);
    return *gpios_;
  }

  auto gpios(std::unique_ptr<drivers::Gpios> i) { gpios_ = std::move(i); }

  auto samd() -> drivers::Samd& {
    assert(samd_ != nullptr);
    return *samd_;
  }

  auto samd(std::unique_ptr<drivers::Samd> i) { samd_ = std::move(i); }

  auto nvs() -> drivers::NvsStorage& {
    assert(nvs_ != nullptr);
    return *nvs_;
  }

  auto nvs(std::unique_ptr<drivers::NvsStorage> i) { nvs_ = std::move(i); }

  auto sd() -> drivers::SdState& { return sd_; }

  auto sd(drivers::SdState s) { sd_ = s; }

  auto bluetooth() -> drivers::Bluetooth& {
    assert(bluetooth_ != nullptr);
    return *bluetooth_;
  }

  auto bluetooth(std::unique_ptr<drivers::Bluetooth> i) {
    bluetooth_ = std::move(i);
  }

  auto battery() -> battery::Battery& {
    assert(battery_ != nullptr);
    return *battery_;
  }

  auto battery(std::unique_ptr<battery::Battery> i) { battery_ = std::move(i); }

  auto tts() -> tts::Provider& {
    assert(tts_ != nullptr);
    return *tts_;
  }

  auto tts(std::unique_ptr<tts::Provider> i) { tts_ = std::move(i); }

  auto touchwheel() -> std::optional<drivers::TouchWheel*> {
    if (!touchwheel_) {
      return {};
    }
    return touchwheel_.get();
  }

  auto touchwheel(std::unique_ptr<drivers::TouchWheel> i) {
    touchwheel_ = std::move(i);
  }

  auto haptics() -> drivers::Haptics& { return *haptics_; }

  auto haptics(std::unique_ptr<drivers::Haptics> i) { haptics_ = std::move(i); }

  auto database() -> database::Handle { return database_; }

  auto database(std::unique_ptr<database::Database> i) {
    database_ = std::move(i);
  }

  auto tag_parser() -> database::ITagParser& {
    assert(tag_parser_ != nullptr);
    return *tag_parser_;
  }

  auto tag_parser(std::unique_ptr<database::ITagParser> i) {
    tag_parser_ = std::move(i);
  }

  auto track_queue() -> audio::TrackQueue& {
    assert(queue_ != nullptr);
    return *queue_;
  }

  auto track_queue(std::unique_ptr<audio::TrackQueue> i) {
    queue_ = std::move(i);
  }

  auto collator() -> locale::ICollator& {
    assert(collator_ != nullptr);
    return *collator_;
  }

  auto collator(std::unique_ptr<locale::ICollator> i) {
    collator_ = std::move(i);
  }

  auto bg_worker() -> tasks::WorkerPool& {
    assert(bg_worker_ != nullptr);
    return *bg_worker_;
  }

  auto bg_worker(std::unique_ptr<tasks::WorkerPool> w) -> void {
    bg_worker_ = std::move(w);
  }

  // Not copyable or movable.
  ServiceLocator(const ServiceLocator&) = delete;
  ServiceLocator& operator=(const ServiceLocator&) = delete;

 private:
  std::unique_ptr<drivers::Gpios> gpios_;
  std::unique_ptr<drivers::Samd> samd_;
  std::unique_ptr<drivers::NvsStorage> nvs_;
  std::unique_ptr<drivers::TouchWheel> touchwheel_;
  std::unique_ptr<drivers::Haptics> haptics_;
  std::unique_ptr<drivers::Bluetooth> bluetooth_;

  std::unique_ptr<audio::TrackQueue> queue_;
  std::unique_ptr<battery::Battery> battery_;
  std::unique_ptr<tts::Provider> tts_;

  std::shared_ptr<database::Database> database_;
  std::unique_ptr<database::ITagParser> tag_parser_;
  std::unique_ptr<locale::ICollator> collator_;

  std::unique_ptr<tasks::WorkerPool> bg_worker_;

  drivers::SdState sd_;
};

}  // namespace system_fsm