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42 lines
1.2 KiB
42 lines
1.2 KiB
using System.Collections.Generic;
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using System.Data;
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using System.Linq;
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using Dapper;
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using NzbDrone.Core.Datastore;
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namespace NzbDrone.Core.Housekeeping.Housekeepers
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{
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public class CleanupUnusedTags : IHousekeepingTask
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{
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private readonly IMainDatabase _database;
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public CleanupUnusedTags(IMainDatabase database)
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{
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_database = database;
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}
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public void Clean()
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{
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using (var mapper = _database.OpenConnection())
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{
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var usedTags = new[] { "Artists", "Notifications", "DelayProfiles", "ReleaseProfiles" }
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.SelectMany(v => GetUsedTags(v, mapper))
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.Distinct()
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.ToArray();
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var usedTagsList = string.Join(",", usedTags.Select(d => d.ToString()).ToArray());
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mapper.Execute($"DELETE FROM Tags WHERE NOT Id IN ({usedTagsList})");
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}
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}
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private int[] GetUsedTags(string table, IDbConnection mapper)
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{
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return mapper.Query<List<int>>($"SELECT DISTINCT Tags FROM {table} WHERE NOT Tags = '[]'")
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.SelectMany(x => x)
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.Distinct()
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.ToArray();
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}
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}
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}
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