appmessage_features.h

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#pragma once
 
// a face has weather when it declares all four of these. the watch asks with the first and reads a
// reading off the other three, so all four are one decision. the ok flag is the one that tells a
// failed fetch from a reading, and a face without it would show "NO GPS" as a live 0 degrees.
// a face that declares none opted out of weather and builds without it. a face that declares only
// some has a typo or a gap, which would otherwise build and go wrong on the watch, so the build
// stops and names each missing key
#if defined(HAS_MESSAGE_KEY_WEATHER_REQUEST) && defined(HAS_MESSAGE_KEY_WEATHER_TEMPERATURE) && \
    defined(HAS_MESSAGE_KEY_WEATHER_CONDITIONS) && defined(HAS_MESSAGE_KEY_WEATHER_OK)
#define APPMESSAGE_HAS_WEATHER 1 
#elif defined(HAS_MESSAGE_KEY_WEATHER_REQUEST) || defined(HAS_MESSAGE_KEY_WEATHER_TEMPERATURE) || \
    defined(HAS_MESSAGE_KEY_WEATHER_CONDITIONS) || defined(HAS_MESSAGE_KEY_WEATHER_OK)
#if !defined(HAS_MESSAGE_KEY_WEATHER_REQUEST)
#error "weather needs WEATHER_REQUEST in messageKeys. A face with weather declares WEATHER_REQUEST, WEATHER_TEMPERATURE, WEATHER_CONDITIONS, and WEATHER_OK"
#endif
#if !defined(HAS_MESSAGE_KEY_WEATHER_TEMPERATURE)
#error "weather needs WEATHER_TEMPERATURE in messageKeys. A face with weather declares WEATHER_REQUEST, WEATHER_TEMPERATURE, WEATHER_CONDITIONS, and WEATHER_OK"
#endif
#if !defined(HAS_MESSAGE_KEY_WEATHER_CONDITIONS)
#error "weather needs WEATHER_CONDITIONS in messageKeys. A face with weather declares WEATHER_REQUEST, WEATHER_TEMPERATURE, WEATHER_CONDITIONS, and WEATHER_OK"
#endif
#if !defined(HAS_MESSAGE_KEY_WEATHER_OK)
#error "weather needs WEATHER_OK in messageKeys. A face with weather declares WEATHER_REQUEST, WEATHER_TEMPERATURE, WEATHER_CONDITIONS, and WEATHER_OK"
#endif
#endif
 
// a face gets coordinates when it declares both halves of the pair. they arrive together, so one
// without the other could never make a fix, and the build stops and names the missing half rather
// than leave the face without coordinates and nothing to say why
#if defined(HAS_MESSAGE_KEY_LOCATION_LATITUDE) && defined(HAS_MESSAGE_KEY_LOCATION_LONGITUDE)
#define APPMESSAGE_HAS_LOCATION 1 
#elif defined(HAS_MESSAGE_KEY_LOCATION_LATITUDE)
#error "coordinates need LOCATION_LONGITUDE in messageKeys beside LOCATION_LATITUDE"
#elif defined(HAS_MESSAGE_KEY_LOCATION_LONGITUDE)
#error "coordinates need LOCATION_LATITUDE in messageKeys beside LOCATION_LONGITUDE"
#endif