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Working on db access

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This commit is contained in:
Max Holleman 2023-06-02 10:56:30 +02:00
parent 1f0e8840c1
commit 4ef3b58a20
6 changed files with 117 additions and 76 deletions
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69
SharpRss/DbAccess.cs
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@ -4,6 +4,7 @@ using System.Data;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using System.Transactions;
using Argotic.Syndication;
using Dapper;
using Microsoft.Data.Sqlite;
@ -125,18 +126,54 @@ namespace SharpRss
{
Parameters = { new SqliteParameter("Url", url) }
};
try
{
await using SqliteDataReader reader = await cmd.ExecuteReaderAsync();
if (reader.Read())
feed = await ReaderToFeedModel(reader);
}
catch (Exception ex)
{
Log.Error(ex, "Error while fetching feed from db.");
}
return feed;
}
public static async Task<FeedModel?> SetFeedsAsync(IEnumerable<FeedModel> feedModels)
public static async Task<FeedModel?> SetFeedAsync(FeedModel feedModel)
{
//TODO: Implement fetching system!!!
FeedModel? resultModel = null;
FeedModel? feed = null;
await using SqliteConnection dbc = new SqliteConnection(ConnectionString);
dbc.Open();
await using SqliteTransaction transaction = dbc.BeginTransaction();
await using SqliteCommand cmd = new SqliteCommand($"INSERT OR REPLACE INTO {FeedTable} (url, title, group_id, feed_type, description, language, copyright, date_added, last_updated, image_url, original_document) VALUES (@url, @title, @groupId, @feedType, @description, @language, @copyright, @dateAdded), @lastUpdated, @imageUrl, @originalDoc); SELECT * FROM {FeedTable} WHERE url=@url", dbc)
{
Parameters =
{
new SqliteParameter("url", feedModel.Url ?? string.Empty),
new SqliteParameter("title", feedModel.Title ?? string.Empty),
new SqliteParameter("groupId", feedModel.GroupId ?? string.Empty),
new SqliteParameter("feedType", feedModel.FeedType ?? string.Empty),
new SqliteParameter("description", feedModel.Description ?? string.Empty),
new SqliteParameter("language", feedModel.Language ?? string.Empty),
new SqliteParameter("copyright", feedModel.Copyright ?? string.Empty),
new SqliteParameter("dateAdded", feedModel.DateAdded?.ToUnixTimeMilliseconds()),
new SqliteParameter("lastUpdated", feedModel.LastUpdated?.ToUnixTimeMilliseconds()),
new SqliteParameter("imageUrl", feedModel.ImageUrl ?? string.Empty),
new SqliteParameter("originalDoc", feedModel.OriginalDocument ?? string.Empty)
}
};
try
{
await using SqliteDataReader reader = await cmd.ExecuteReaderAsync();
feed = await ReaderToFeedModel(reader);
}
catch (Exception ex)
{
Log.Error(ex, "Database error, adding feed model to database failed!");
return feed;
}
return feed;
/*await using SqliteTransaction transaction = dbc.BeginTransaction();
try
{
foreach (var feedModel in feedModels)
{
//await using SqliteCommand cmd = new SqliteCommand($"INSERT OR REPLACE INTO {_feedTable} (id, url, title, group_id, feed_type, description, language, copyright, date_added, last_updated, image_url, original_document) VALUES (IFNULL((SELECT id FROM {_feedTable} WHERE url=@url), @id), @url, @title, @groupId, @feedType, @description, @language, @copyright, IFNULL((SELECT date_added FROM {_feedTable} WHERE id=@id), @dateAdded), @lastUpdated, @imageUrl, @originalDoc); SELECT * FROM {_feedTable} WHERE url=@url", dbc)
@ -162,8 +199,13 @@ namespace SharpRss
await cmd.ExecuteNonQueryAsync();
}
await transaction.CommitAsync();
await FetchFeedItemsAsync(feedModels.Select(x => x.Url).ToArray());
return resultModel;
}
catch (Exception ex)
{
await transaction.RollbackAsync();
Log.Error(ex, "Error on inserting feeds to db.");
return false;
}*/
}
public static async Task FetchFeedItemsAsync(string[]? feedUrls = null)
@ -188,8 +230,8 @@ namespace SharpRss
{
GenericSyndicationFeed syndication = new GenericSyndicationFeed();
syndication.Load(dbFeed.OriginalDocument);
//TODO: Get items and add to db
}
//TODO: Rewrite some stuff...
}
public static async Task<bool> RemoveFeedAsync(FeedModel feedModel)
@ -197,11 +239,11 @@ namespace SharpRss
bool result = false;
await using SqliteConnection dbc = new SqliteConnection(ConnectionString);
dbc.Open();
await using SqliteCommand cmd = new SqliteCommand($"DELETE FROM {FeedTable} WHERE id=@id; UPDATE {FeedItemTable} SET feed_id=NULL WHERE feed_id=@id", dbc)
await using SqliteCommand cmd = new SqliteCommand($"DELETE FROM {FeedTable} WHERE url=@Url; UPDATE {FeedItemTable} SET feed_id=NULL WHERE feed_id=@Url", dbc)
{
Parameters =
{
new SqliteParameter("id", feedModel.Id)
new SqliteParameter("Url", feedModel.Url)
}
};
int affected = await cmd.ExecuteNonQueryAsync();
@ -326,9 +368,9 @@ namespace SharpRss
}
private static async Task<FeedModel> ReaderToFeedModel(SqliteDataReader reader)
{
FeedModel fetchedFeed = new FeedModel(reader["url"].ToString())
FeedModel fetchedFeed = new FeedModel()
{
Id = reader["id"].ToString(),
Url = reader["url"].ToString(),
Title = reader["title"].ToString(),
GroupId = reader["group_id"].ToString(),
FeedType = reader["feed_type"].ToString(),
@ -340,11 +382,12 @@ namespace SharpRss
ImageUrl = reader["image_url"].ToString(),
OriginalDocument = reader["original_document"].ToString()
};
var groupFetch = await GetGroupsAsync(fetchedFeed.GroupId);
//TODO: Set group on insert
/*var groupFetch = await GetGroupsAsync(fetchedFeed.GroupId);
if (groupFetch.Any())
fetchedFeed.Group = groupFetch.First();
else
Log.Warning("Could not get group from feed: {FeedId}", fetchedFeed.Id);
Log.Warning("Could not get group from feed: {FeedId}", fetchedFeed.Id);*/
return fetchedFeed;
}

6
SharpRss/Models/FeedModel.cs
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@ -4,13 +4,11 @@ namespace SharpRss.Models
{
public class FeedModel
{
public FeedModel(string rssUrl)
public FeedModel()
{
Url = rssUrl;
}
public CategoryModel? Group { get; set; }
public string? Id { get; set; }
public string? Url { get; set; }
public string Url { get; set; }
public string? Title { get; set; } = string.Empty;
public string? GroupId { get; set; } = string.Empty;
public string? FeedType { get; set; } = string.Empty;

48
SharpRss/Services/RssService.cs
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@ -1,5 +1,6 @@
using System;
using System.Collections.Generic;
using System.ComponentModel.Design;
using System.Linq;
using System.Threading.Tasks;
using Argotic.Common;
@ -38,35 +39,33 @@ namespace SharpRss.Services
bool validate = SyndicationDiscoveryUtility.UriExists(new Uri(url));
if (!validate) return false;
// Check if feed exists in db
FeedModel? dbFeed = await DbAccess.GetFeedAsync(url);
if (dbFeed == null)
FeedModel? fModel = await DbAccess.GetFeedAsync(url);
// If not exists fetch feed & add.
if (fModel == null)
{
GenericSyndicationFeed genFeed = new GenericSyndicationFeed();
switch (genFeed.Format)
{
case SyndicationContentFormat.Rss:
RssFeed rssFeed = (RssFeed)genFeed.Resource;
break;
case SyndicationContentFormat.Atom:
AtomFeed atomFeed = (AtomFeed)genFeed.Resource;
break;
default:
Log.Information("Feed implementation missing!");
break;
}
}
// Update feed if newer
GenericSyndicationFeed genFeed = GenericSyndicationFeed.Create(new Uri(url));
fModel = FromResource(genFeed.Resource);
fModel.GroupId = group?.Id;
// Add feed
FeedModel? dbFeed = await DbAccess.SetFeedAsync(fModel);
// Update/fetch items
await DbAccess.FetchFeedItemsAsync(new string[] { fModel.Url });
}
return false;
}
private static FeedModel FromResource(ISyndicationResource resource)
{
FeedModel model = new FeedModel("");
switch (resource)
FeedModel model = new FeedModel();
switch (resource.Format)
{
case RssFeed rssFeed:
//TODO: From feed to model
case SyndicationContentFormat.Rss:
RssFeed rssFeed = (RssFeed)resource;
break;
case SyndicationContentFormat.Atom:
AtomFeed atomFeed = (AtomFeed)resource;
break;
default:
Log.Information("Feed implementation missing!");
break;
}
return model;
@ -158,8 +157,9 @@ namespace SharpRss.Services
Log.Error(e, "Error fetching feeds!");
throw;
}*/
var groups = await GetGroupsAsync();
CategoryModel testGroup = groups.Single(x => x.Name == "News");
/*var groups = await GetGroupsAsync();
CategoryModel testGroup = groups.Single(x => x.Name == "News");*/
await AddSubscriptionAsync("https://www.nu.nl/rss/Algemeen");
/*await AddFeedsAsync(new[]
{
"https://www.nu.nl/rss/Algemeen",

2
WebSharpRSS/Pages/List.razor
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@ -57,7 +57,7 @@
else if (Gid != null)
{
var feeds = await _rssService.GetFeedsAsync(Gid);
var feedIds = feeds.Select(x => x.Id);
var feedIds = feeds.Select(x => x.Url);
var feedItems = await _rssService.GetFeedItemsFromFeedsAsync(feedIds.ToArray());
items = feedItems.Select(x => FeedItemData.FromModel(x)).OrderBy(x => x.PublishingDate).Reverse().ToHashSet();
}

2
WebSharpRSS/Shared/SideGuide.razor
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@ -51,7 +51,7 @@
if (_selectedItem == null) return;
if (_selectedItem.FeedModel != null)
{
_navigation.NavigateTo($"/list?fid={_selectedItem.FeedModel.Id}");
_navigation.NavigateTo($"/list?fid={_selectedItem.FeedModel.Url}");
}
else if (_selectedItem.GroupModel != null)
{

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WebSharpRSS/sharp_rss.sqlite
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