// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

syntax = "proto3";

package google.streetview.publish.v1;

import "google/api/field_behavior.proto";
import "google/protobuf/duration.proto";
import "google/protobuf/timestamp.proto";
import "google/type/latlng.proto";

option go_package = "google.golang.org/genproto/googleapis/streetview/publish/v1;publish";
option java_outer_classname = "StreetViewPublishResources";
option java_package = "com.google.geo.ugc.streetview.publish.v1";

// Upload reference for media files.
message UploadRef {
  // Required.
  oneof file_source {
    // An upload reference should be unique for each user. It follows
    // the form:
    // "https://streetviewpublish.googleapis.com/media/user/{account_id}/photo/{upload_reference}"
    string upload_url = 1;
  }
}

// Identifier for a [Photo][google.streetview.publish.v1.Photo].
message PhotoId {
  // A unique identifier for a photo.
  string id = 1;
}

// Level information containing level number and its corresponding name.
message Level {
  // Optional. Floor number, used for ordering. 0 indicates the ground level, 1 indicates
  // the first level above ground level, -1 indicates the first level under
  // ground level. Non-integer values are OK.
  double number = 1 [(google.api.field_behavior) = OPTIONAL];

  // Required. A name assigned to this Level, restricted to 3 characters.
  // Consider how the elevator buttons would be labeled for this level if there
  // was an elevator.
  string name = 2 [(google.api.field_behavior) = REQUIRED];
}

// Raw pose measurement for an entity.
message Pose {
  // Latitude and longitude pair of the pose, as explained here:
  // https://cloud.google.com/datastore/docs/reference/rest/Shared.Types/LatLng
  // When creating a [Photo][google.streetview.publish.v1.Photo], if the
  // latitude and longitude pair are not provided, the geolocation from the
  // exif header is used. A latitude and longitude pair not provided in the
  // photo or exif header causes the photo process to fail.
  google.type.LatLng lat_lng_pair = 1;

  // Altitude of the pose in meters above WGS84 ellipsoid.
  // NaN indicates an unmeasured quantity.
  double altitude = 2;

  // The following pose parameters pertain to the center of the photo. They
  // match https://developers.google.com/streetview/spherical-metadata.
  // Compass heading, measured at the center of the photo in degrees clockwise
  // from North. Value must be >=0 and <360. NaN indicates an unmeasured
  // quantity.
  double heading = 3;

  // Pitch, measured at the center of the photo in degrees. Value must be >=-90
  // and <= 90. A value of -90 means looking directly down, and a value of 90
  // means looking directly up.
  // NaN indicates an unmeasured quantity.
  double pitch = 4;

  // Roll, measured in degrees. Value must be >= 0 and <360. A value of 0
  // means level with the horizon.
  // NaN indicates an unmeasured quantity.
  double roll = 5;

  // Time of the GPS record since UTC epoch.
  google.protobuf.Timestamp gps_record_timestamp_unix_epoch = 6;

  // Level (the floor in a building) used to configure vertical navigation.
  Level level = 7;

  // The estimated horizontal accuracy of this pose in meters with 68%
  // confidence (one standard deviation). For example, on Android, this value is
  // available from this method:
  // https://developer.android.com/reference/android/location/Location#getAccuracy().
  // Other platforms have different methods of obtaining similar accuracy
  // estimations.
  float accuracy_meters = 9;
}

// IMU data from the device sensors.
message Imu {
  // A Generic 3d measurement sample.
  message Measurement3d {
    // The timestamp of the IMU measurement.
    google.protobuf.Timestamp capture_time = 1;

    // The sensor measurement in the x axis.
    float x = 2;

    // The sensor measurement in the y axis.
    float y = 3;

    // The sensor measurement in the z axis.
    float z = 4;
  }

  // The accelerometer measurements in meters/sec^2 with increasing timestamps
  // from devices.
  repeated Measurement3d accel_mpsps = 1;

  // The gyroscope measurements in radians/sec with increasing timestamps from
  // devices.
  repeated Measurement3d gyro_rps = 2;

  // The magnetometer measurements of the magnetic field in microtesla (uT) with
  // increasing timestamps from devices.
  repeated Measurement3d mag_ut = 3;
}

// Place metadata for an entity.
message Place {
  // Place identifier, as described in
  // https://developers.google.com/places/place-id.
  string place_id = 1;

  // Output only. The name of the place, localized to the language_code.
  string name = 2 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. The language_code that the name is localized with. This should
  // be the language_code specified in the request, but may be a fallback.
  string language_code = 3 [(google.api.field_behavior) = OUTPUT_ONLY];
}

// A connection is the link from a source photo to a destination photo.
message Connection {
  // Required. The destination of the connection from the containing photo to
  // another photo.
  PhotoId target = 1 [(google.api.field_behavior) = REQUIRED];
}

// Photo is used to store 360 photos along with photo metadata.
message Photo {
  // Status of rights transfer.
  enum TransferStatus {
    // The status of this transfer is unspecified.
    TRANSFER_STATUS_UNKNOWN = 0;

    // This photo has never been in a transfer.
    NEVER_TRANSFERRED = 1;

    // This photo transfer has been initiated, but the receiver has not yet
    // responded.
    PENDING = 2;

    // The photo transfer has been completed, and this photo has been
    // transferred to the recipient.
    COMPLETED = 3;

    // The recipient rejected this photo transfer.
    REJECTED = 4;

    // The photo transfer expired before the recipient took any action.
    EXPIRED = 5;

    // The sender cancelled this photo transfer.
    CANCELLED = 6;

    // The recipient owns this photo due to a rights transfer.
    RECEIVED_VIA_TRANSFER = 7;
  }

  // Publication status of the photo in Google Maps.
  enum MapsPublishStatus {
    // The status of the photo is unknown.
    UNSPECIFIED_MAPS_PUBLISH_STATUS = 0;

    // The photo is published to the public through Google Maps.
    PUBLISHED = 1;

    // The photo has been rejected for an unknown reason.
    REJECTED_UNKNOWN = 2;
  }

  // Required. Output only. Required when updating a photo. Output only when creating a photo.
  // Identifier for the photo, which is unique among all photos in
  // Google.
  PhotoId photo_id = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.field_behavior) = OUTPUT_ONLY
  ];

  // Input only. Required when creating a photo. Input only. The resource URL where the
  // photo bytes are uploaded to.
  UploadRef upload_reference = 2 [(google.api.field_behavior) = INPUT_ONLY];

  // Output only. The download URL for the photo bytes. This field is set only
  // when
  // [GetPhotoRequest.view][google.streetview.publish.v1.GetPhotoRequest.view]
  // is set to
  // [PhotoView.INCLUDE_DOWNLOAD_URL][google.streetview.publish.v1.PhotoView.INCLUDE_DOWNLOAD_URL].
  string download_url = 3 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. The thumbnail URL for showing a preview of the given photo.
  string thumbnail_url = 9 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. The share link for the photo.
  string share_link = 11 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Optional. Pose of the photo.
  Pose pose = 4 [(google.api.field_behavior) = OPTIONAL];

  // Optional. Connections to other photos. A connection represents the link from this
  // photo to another photo.
  repeated Connection connections = 5 [(google.api.field_behavior) = OPTIONAL];

  // Optional. Absolute time when the photo was captured.
  // When the photo has no exif timestamp, this is used to set a timestamp in
  // the photo metadata.
  google.protobuf.Timestamp capture_time = 6 [(google.api.field_behavior) = OPTIONAL];

  // Output only. Time when the image was uploaded.
  google.protobuf.Timestamp upload_time = 14 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Optional. Places where this photo belongs.
  repeated Place places = 7 [(google.api.field_behavior) = OPTIONAL];

  // Output only. View count of the photo.
  int64 view_count = 10 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. Status of rights transfer on this photo.
  TransferStatus transfer_status = 12 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. Status in Google Maps, whether this photo was published or rejected.
  MapsPublishStatus maps_publish_status = 13 [(google.api.field_behavior) = OUTPUT_ONLY];
}

// A sequence of 360 photos along with metadata.
message PhotoSequence {
  // Primary source of GPS measurements.
  enum GpsSource {
    // GPS in raw_gps_timeline takes precedence if it exists.
    PHOTO_SEQUENCE = 0;

    // GPS in Camera Motion Metadata Track (CAMM) takes precedence if it exists.
    CAMERA_MOTION_METADATA_TRACK = 1;
  }

  // Output only. Unique identifier for the photo sequence.
  // This also acts as a long running operation ID if uploading is performed
  // asynchronously.
  string id = 1 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. Photos with increasing timestamps.
  repeated Photo photos = 2 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Input only. Required when creating photo sequence. The resource name
  // where the bytes of the photo sequence (in the form of video) are uploaded.
  UploadRef upload_reference = 3 [(google.api.field_behavior) = INPUT_ONLY];

  // Optional. Absolute time when the photo sequence starts to be captured.
  // If the photo sequence is a video, this is the start time of the video.
  // If this field is populated in input, it overrides the capture time in the
  // video or XDM file.
  google.protobuf.Timestamp capture_time_override = 4 [(google.api.field_behavior) = OPTIONAL];

  // Output only. The time this photo sequence was created in uSV Store service.
  google.protobuf.Timestamp upload_time = 18 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Input only. Raw GPS measurements with increasing timestamps from the device that
  // aren't time synced with each photo.
  // These raw measurements will be used to infer the pose of each frame.
  // Required in input when InputType is VIDEO and raw GPS measurements are not
  // in Camera Motion Metadata Track (CAMM).
  // User can indicate which takes precedence using gps_source if raw GPS
  // measurements are provided in both raw_gps_timeline and
  // Camera Motion Metadata Track (CAMM).
  repeated Pose raw_gps_timeline = 7 [(google.api.field_behavior) = INPUT_ONLY];

  // Input only. If both raw_gps_timeline and
  // the Camera Motion Metadata Track (CAMM) contain GPS measurements,
  // indicate which takes precedence.
  GpsSource gps_source = 8 [(google.api.field_behavior) = INPUT_ONLY];

  // Input only. Three axis IMU data for the collection.
  // If this data is too large to put in the request, then it should be put in
  // the CAMM track for the video. This data always takes precedence over the
  // equivalent CAMM data, if it exists.
  Imu imu = 11 [(google.api.field_behavior) = INPUT_ONLY];

  // Output only. The processing state of this sequence.
  ProcessingState processing_state = 12 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. If this sequence has processing_state = FAILED, this will contain the
  // reason why it failed. If the processing_state is any other value, this
  // field will be unset.
  ProcessingFailureReason failure_reason = 13 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. If this sequence has `failure_reason` set, this may contain additional
  // details about the failure.
  ProcessingFailureDetails failure_details = 23 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. The computed distance of the photo sequence in meters.
  double distance_meters = 16 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. A rectangular box that encapsulates every image in this photo sequence.
  LatLngBounds sequence_bounds = 20 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. The total number of views that all the published images in this
  // PhotoSequence have received.
  int64 view_count = 21 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Output only. The filename of the upload. Does not include the directory path. Only
  // available if the sequence was uploaded on a platform that provides the
  // filename.
  string filename = 22 [(google.api.field_behavior) = OUTPUT_ONLY];
}

// A rectangle in geographical coordinates.
message LatLngBounds {
  // The southwest corner of these bounds.
  google.type.LatLng southwest = 1;

  // The northeast corner of these bounds.
  google.type.LatLng northeast = 2;
}

// The processing state of the sequence. The states move as follows:
//
// ```
//      +-------------------------+
//      |                         |
//  +---v---+  +----------+  +----+----+
//  |PENDING+-->PROCESSING+-->PROCESSED|
//  +---+---+  +----+-----+  +----+----+
//      |           |             |
//      |        +--v---+         |
//      +-------->FAILED<---------+
//               +------+
// ```
//
// The sequence may move to FAILED from any state. Additionally, a processed
// sequence may be re-processed at any time.
enum ProcessingState {
  // The state is unspecified, this is the default value.
  PROCESSING_STATE_UNSPECIFIED = 0;

  // The sequence has not yet started processing.
  PENDING = 1;

  // The sequence is currently in processing.
  PROCESSING = 2;

  // The sequence has finished processing including refining position.
  PROCESSED = 3;

  // The sequence failed processing. See FailureReason for more details.
  FAILED = 4;
}

// The possible reasons this [PhotoSequence]
// [google.streetview.publish.v1.PhotoSequence] failed to process.
enum ProcessingFailureReason {
  // The failure reason is unspecified, this is the default value.
  PROCESSING_FAILURE_REASON_UNSPECIFIED = 0;

  // Video frame's resolution is too small.
  LOW_RESOLUTION = 1;

  // This video has been uploaded before.
  DUPLICATE = 2;

  // Too few GPS points.
  INSUFFICIENT_GPS = 3;

  // No overlap between the time frame of GPS track and the time frame of
  // video.
  NO_OVERLAP_GPS = 4;

  // GPS is invalid (e.x. all GPS points are at (0,0))
  INVALID_GPS = 5;

  // The sequence of photos could not be accurately located in the world.
  FAILED_TO_REFINE_POSITIONS = 6;

  // The sequence was taken down for policy reasons.
  TAKEDOWN = 7;

  // The video file was corrupt or could not be decoded.
  CORRUPT_VIDEO = 8;

  // A permanent failure in the underlying system occurred.
  INTERNAL = 9;

  // The video format is invalid or unsupported.
  INVALID_VIDEO_FORMAT = 10;

  // Invalid image aspect ratio found.
  INVALID_VIDEO_DIMENSIONS = 11;

  // Invalid capture time. Timestamps were from the future.
  INVALID_CAPTURE_TIME = 12;

  // GPS data contains a gap greater than 5 seconds in duration.
  GPS_DATA_GAP = 13;

  // GPS data is too erratic to be processed.
  JUMPY_GPS = 14;

  // IMU (Accelerometer, Gyroscope, etc.) data are not valid. They may be
  // missing required fields (x, y, z or time), may not be formatted correctly,
  // or any other issue that prevents our systems from parsing it.
  INVALID_IMU = 15;

  // Too few IMU points.
  INSUFFICIENT_IMU = 21;

  // Insufficient overlap in the time frame between GPS, IMU, and other time
  // series data.
  INSUFFICIENT_OVERLAP_TIME_SERIES = 22;

  // IMU (Accelerometer, Gyroscope, etc.) data contain gaps greater than 0.1
  // seconds in duration.
  IMU_DATA_GAP = 16;

  // The camera is not supported.
  UNSUPPORTED_CAMERA = 17;

  // Some frames were indoors, which is unsupported.
  NOT_OUTDOORS = 18;

  // Not enough video frames.
  INSUFFICIENT_VIDEO_FRAMES = 19;
}

// Additional details to accompany the ProcessingFailureReason enum.
// This message is always expected to be used in conjunction with
// ProcessingFailureReason, and the oneof value set in this message should match
// the FailureReason.
message ProcessingFailureDetails {
  // Only one set of details will be set, and must match the corresponding enum
  // in ProcessingFailureReason.
  oneof details {
    // See InsufficientGpsFailureDetails.
    InsufficientGpsFailureDetails insufficient_gps_details = 1;

    // See GpsDataGapFailureDetails.
    GpsDataGapFailureDetails gps_data_gap_details = 2;

    // See ImuDataGapFailureDetails.
    ImuDataGapFailureDetails imu_data_gap_details = 3;

    // See NotOutdoorsFailureDetails.
    NotOutdoorsFailureDetails not_outdoors_details = 4;
  }
}

// Details related to ProcessingFailureReason#INSUFFICIENT_GPS.
message InsufficientGpsFailureDetails {
  // The number of GPS points that were found in the video.
  optional int32 gps_points_found = 1;
}

// Details related to ProcessingFailureReason#GPS_DATA_GAP.
// If there are multiple GPS data gaps, only the one with the largest duration
// is reported here.
message GpsDataGapFailureDetails {
  // The duration of the gap in GPS data that was found.
  optional google.protobuf.Duration gap_duration = 1;

  // Relative time (from the start of the video stream) when the gap started.
  optional google.protobuf.Duration gap_start_time = 2;
}

// Details related to ProcessingFailureReason#IMU_DATA_GAP.
// If there are multiple IMU data gaps, only the one with the largest duration
// is reported here.
message ImuDataGapFailureDetails {
  // The duration of the gap in IMU data that was found.
  optional google.protobuf.Duration gap_duration = 1;

  // Relative time (from the start of the video stream) when the gap started.
  optional google.protobuf.Duration gap_start_time = 2;
}

// Details related to ProcessingFailureReason#NOT_OUTDOORS.
// If there are multiple indoor frames found, the first frame is recorded here.
message NotOutdoorsFailureDetails {
  // Relative time (from the start of the video stream) when an indoor frame was
  // found.
  optional google.protobuf.Duration start_time = 1;
}