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more work on SnapshotBatch

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Collin M. Barrett 2018-08-23 09:26:00 -05:00
parent aa5617e938
commit 6dd9a3049e
1 changed files with 30 additions and 20 deletions
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50
src/FilterLists.Services/Snapshot/SnapshotBatch.cs
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@ -13,7 +13,6 @@ public class SnapshotBatch
private readonly FilterListsDbContext dbContext;
private readonly IEnumerable<string> lines;
private readonly Data.Entities.Snapshot snapEntity;
private IQueryable<Rule> existingRules;
public SnapshotBatch(FilterListsDbContext dbContext, IEnumerable<string> lines,
Data.Entities.Snapshot snapEntity)
@ -23,34 +22,45 @@ public SnapshotBatch(FilterListsDbContext dbContext, IEnumerable<string> lines,
this.snapEntity = snapEntity;
}
private IQueryable<Rule> ExistingRules =>
dbContext.Rules.Join(lines, rule => rule.Raw, line => line, (rule, line) => rule);
public async Task SaveAsync()
{
GetExistingRules();
AddAddedSnapshotRulesForExistingRules();
AddAddedSnapshotRulesForNewRules();
AddAddedSnapRulesForExistingRules();
AddAddedSnapRulesForNewRules();
await dbContext.SaveChangesAsync();
}
private void GetExistingRules() =>
existingRules = dbContext.Rules.Join(lines, rule => rule.Raw, line => line, (rule, line) => rule);
private void AddAddedSnapshotRulesForExistingRules()
private void AddAddedSnapRulesForExistingRules()
{
var existingSnapshotRules = dbContext.SnapshotRules
.Where(sr =>
existingRules.Contains(sr.Rule) &&
sr.AddedBySnapshot.FilterListId == snapEntity.FilterListId &&
sr.RemovedBySnapshot == null);
var newSnapshotRules = existingRules.Where(r => !existingSnapshotRules.Select(sr => sr.Rule).Contains(r))
.Select(r => new SnapshotRule {Rule = r});
snapEntity.AddedSnapshotRules.AddRange(newSnapshotRules);
var existingAddedSnapRules = GetExistingAddedSnapRules();
var newAddedSnapRules = CreateNewAddedSnapRules(existingAddedSnapRules);
snapEntity.AddedSnapshotRules.AddRange(newAddedSnapRules);
}
private void AddAddedSnapshotRulesForNewRules()
private IQueryable<SnapshotRule> GetExistingAddedSnapRules() =>
dbContext.SnapshotRules
.Where(sr =>
ExistingRules.Contains(sr.Rule) &&
sr.AddedBySnapshot.FilterListId == snapEntity.FilterListId &&
sr.RemovedBySnapshot == null);
private IEnumerable<SnapshotRule> CreateNewAddedSnapRules(IQueryable<SnapshotRule> existingAddedSnapRules) =>
ExistingRules.Where(r => !existingAddedSnapRules.Select(sr => sr.Rule).Contains(r))
.Select(r => new SnapshotRule {Rule = r});
private void AddAddedSnapRulesForNewRules()
{
var rules = lines.Except(existingRules.Select(r => r.Raw)).Select(l => new Rule {Raw = l});
var snapshotRules = rules.Select(r => new SnapshotRule {Rule = r});
snapEntity.AddedSnapshotRules.AddRange(snapshotRules);
var newRules = CreateNewRules();
var newAddedSnapRules = CreateSnapRules(newRules);
snapEntity.AddedSnapshotRules.AddRange(newAddedSnapRules);
}
private IEnumerable<Rule> CreateNewRules() =>
lines.Except(ExistingRules.Select(r => r.Raw)).Select(l => new Rule {Raw = l});
private static IEnumerable<SnapshotRule> CreateSnapRules(IEnumerable<Rule> rules) =>
rules.Select(r => new SnapshotRule {Rule = r});
}
}