91 lines
3.0 KiB
C#
91 lines
3.0 KiB
C#
using System;
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using System.Linq;
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using BirdsiteLive.Twitter;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading.Tasks;
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namespace BirdsiteLive.Domain
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{
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public class MigrationService
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{
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private readonly ITwitterTweetsService _twitterTweetsService;
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private readonly IActivityPubService _activityPubService;
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#region Ctor
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public MigrationService(ITwitterTweetsService twitterTweetsService, IActivityPubService activityPubService)
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{
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_twitterTweetsService = twitterTweetsService;
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_activityPubService = activityPubService;
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}
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#endregion
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public string GetMigrationCode(string acct)
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{
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var hash = GetHashString(acct);
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return $"[[BirdsiteLIVE-MigrationCode|{hash.Substring(0, 10)}]]";
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}
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public bool ValidateTweet(string acct, string tweetId)
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{
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var code = GetMigrationCode(acct);
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var castedTweetId = ExtractedTweetId(tweetId);
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var tweet = _twitterTweetsService.GetTweet(castedTweetId);
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if (tweet == null) throw new Exception("Tweet not found");
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if (!tweet.MessageContent.Contains(code)) throw new Exception("Tweet don't have migration code");
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return true;
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}
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private long ExtractedTweetId(string tweetId)
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{
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long castedId;
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if (long.TryParse(tweetId, out castedId))
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return castedId;
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var urlPart = tweetId.Split('/').LastOrDefault();
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if (long.TryParse(urlPart, out castedId))
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return castedId;
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throw new ArgumentException("Unvalid Tweet ID");
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}
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public async Task<bool> ValidateFediverseAcctAsync(string fediverseAcct)
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{
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if (string.IsNullOrWhiteSpace(fediverseAcct))
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throw new ArgumentException("Please provide Fediverse account");
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if( !fediverseAcct.Contains('@') || fediverseAcct.Trim('@').Split('@').Length != 2)
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throw new ArgumentException("Please provide valid Fediverse handle");
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var objectId = await _activityPubService.GetUserIdAsync(fediverseAcct);
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var user = await _activityPubService.GetUser(objectId);
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if(user != null) return true;
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return false;
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}
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public async Task MigrateAccountAsync(string acct, string tweetId, string fediverseAcct, bool triggerRemoteMigration)
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{
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throw new NotImplementedException("Migration not implemented");
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}
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private byte[] GetHash(string inputString)
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{
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using (HashAlgorithm algorithm = SHA256.Create())
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return algorithm.ComputeHash(Encoding.UTF8.GetBytes(inputString));
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}
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private string GetHashString(string inputString)
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{
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StringBuilder sb = new StringBuilder();
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foreach (byte b in GetHash(inputString))
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sb.Append(b.ToString("X2"));
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return sb.ToString();
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}
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}
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} |