public ArchiveVideo(JObject json, Archive.Archive archive, Guid sessionId) : base(json)
{
var pathArr = Meta["attachments"].ToObject <string[]>() ?? throw new ArgumentException("Video is missing 'attachments'");
var path = "" + sessionId + pathArr[0];
_archive = archive;
var offset = Meta["start_time"].Value <long>();
// Find the file in the archive
_zipEntry = _archive.FindFile(path) ?? throw new ZipException($"Video file '{path}' not found in archive");
var estimatedVideoLength = 0L;
if (Meta.TryGetValue("video_length", out var value))
{
estimatedVideoLength = value.Value <long>();
}
// Create the video datapoint
_video = new ArchiveVideoVideo(_zipEntry, _archive, path, offset, estimatedVideoLength)
{
Name = "Video"
};
AddDataPoint(_video);
IsSaved = true;
}
private async Task <ArchiveTableInformation> ParseTableInformation(JObject json, Archive.Archive archive, Guid sessionId)
{
// Find the properties in the JSON
ArchiveStructure.GetUserMeta(json, out var meta, out var user);
var pathArr = meta["attachments"].ToObject <string[]>() ?? throw new ArgumentException("Table is missing 'attachments'");
var path = "" + sessionId + pathArr[0];
// Find the file in the archive
var zipEntry = archive.FindFile(path) ?? throw new ZipException($"Table file '{path}' not found in archive");
var tableInformation = new ArchiveTableInformation
{
ZipEntry = zipEntry,
Columns = new List <DataField>(),
Uri = path,
Units = new List <string>(),
TimeUnit = "",
};
// Open the table file
using (var stream = await archive.OpenFile(zipEntry))
using (var reader = new ParquetReader(stream))
{
var fields = reader.Schema.GetDataFields();
var rawUnits = new string[0];
if (meta.ContainsKey("units"))
{
rawUnits = meta["units"].Select(unit => unit.Value <string>()).ToArray();
}
// Find all the column information
int idx = 0;
foreach (var field in fields)
{
// Fetch unit for current column
string currUnit = "";
if (idx < rawUnits.Length)
{
currUnit = rawUnits[idx];
}
idx++;
if (field.Name.Equals("time", StringComparison.OrdinalIgnoreCase))
{
tableInformation.Time = field;
tableInformation.TimeUnit = currUnit;
}
else
{
tableInformation.Columns.Add(field);
tableInformation.Units.Add(currUnit);
}
}
}
if (meta.ContainsKey("is_world_clock"))
{
tableInformation.IsWorldSynchronized = meta["is_world_clock"].Value <bool>();
}
// Return the collected info
return(tableInformation);
}