InfiniTime.git

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141

/*  Copyright (C) 2023 Jean-François Milants

    This file is part of InfiniTime.

    InfiniTime 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.

    InfiniTime 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 this program.  If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once

#include <cstdint>
#include <string>
#include <vector>
#include <memory>

#define min // workaround: nimble's min/max macros conflict with libstdc++
#define max
#include <host/ble_gap.h>
#include <host/ble_uuid.h>
#include <optional>
#include <cstring>
#undef max
#undef min

#include "components/datetime/DateTimeController.h"

int WeatherCallback(uint16_t connHandle, uint16_t attrHandle, struct ble_gatt_access_ctxt* ctxt, void* arg);

namespace Pinetime {
  namespace Controllers {

    class SimpleWeatherService {
    public:
      explicit SimpleWeatherService(const DateTime& dateTimeController);

      void Init();

      int OnCommand(struct ble_gatt_access_ctxt* ctxt);

      static constexpr uint8_t MaxNbForecastDays = 5;

      enum class Icons : uint8_t {
        Sun = 0,       // ClearSky
        CloudsSun = 1, // FewClouds
        Clouds = 2,    // Scattered clouds
        BrokenClouds = 3,
        CloudShowerHeavy = 4, // shower rain
        CloudSunRain = 5,     // rain
        Thunderstorm = 6,
        Snow = 7,
        Smog = 8, // Mist
        Unknown = 255
      };

      using Location = std::array<char, 33>; // 32 char + \0 (end of string)

      struct CurrentWeather {
        CurrentWeather(uint64_t timestamp,
                       int16_t temperature,
                       int16_t minTemperature,
                       int16_t maxTemperature,
                       Icons iconId,
                       Location&& location)
          : timestamp {timestamp},
            temperature {temperature},
            minTemperature {minTemperature},
            maxTemperature {maxTemperature},
            iconId {iconId},
            location {std::move(location)} {
        }

        uint64_t timestamp;
        int16_t temperature;
        int16_t minTemperature;
        int16_t maxTemperature;
        Icons iconId;
        Location location;

        bool operator==(const CurrentWeather& other) const;
      };

      struct Forecast {
        uint64_t timestamp;
        uint8_t nbDays;

        struct Day {
          int16_t minTemperature;
          int16_t maxTemperature;
          Icons iconId;
        };

        std::array<Day, MaxNbForecastDays> days;
      };

      std::optional<CurrentWeather> Current() const;
      std::optional<Forecast> GetForecast() const;

    private:
      // 00050000-78fc-48fe-8e23-433b3a1942d0
      static constexpr ble_uuid128_t BaseUuid() {
        return CharUuid(0x00, 0x00);
      }

      // 0005yyxx-78fc-48fe-8e23-433b3a1942d0
      static constexpr ble_uuid128_t CharUuid(uint8_t x, uint8_t y) {
        return ble_uuid128_t {.u = {.type = BLE_UUID_TYPE_128},
                              .value = {0xd0, 0x42, 0x19, 0x3a, 0x3b, 0x43, 0x23, 0x8e, 0xfe, 0x48, 0xfc, 0x78, y, x, 0x05, 0x00}};
      }

      ble_uuid128_t weatherUuid {BaseUuid()};

      ble_uuid128_t weatherDataCharUuid {CharUuid(0x00, 0x01)};

      const struct ble_gatt_chr_def characteristicDefinition[2] = {{.uuid = &weatherDataCharUuid.u,
                                                                    .access_cb = WeatherCallback,
                                                                    .arg = this,
                                                                    .flags = BLE_GATT_CHR_F_WRITE,
                                                                    .val_handle = &eventHandle},
                                                                   {0}};
      const struct ble_gatt_svc_def serviceDefinition[2] = {
        {.type = BLE_GATT_SVC_TYPE_PRIMARY, .uuid = &weatherUuid.u, .characteristics = characteristicDefinition},
        {0}};

      uint16_t eventHandle {};

      const Pinetime::Controllers::DateTime& dateTimeController;

      std::optional<CurrentWeather> currentWeather;
      std::optional<Forecast> forecast;
    };
  }
}