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Fix opgg provider #33

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Fix opgg provider #33

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1cf4867
Basic Item Build crawler for OP.GG
Apr 4, 2019
b15935e
Fill role -> popular role
Apr 5, 2019
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84 changes: 83 additions & 1 deletion Legendary Rune Maker/Data/Providers/OpGGProvider.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -21,11 +21,14 @@ internal class OpGGProvider : Provider
};

public override string Name => "OP.GG";
public override Options ProviderOptions => Options.RunePages | Options.SkillOrder;
public override Options ProviderOptions => Options.ItemSets | Options.RunePages | Options.SkillOrder;

private static string GetRoleUrl(int championId, Position position)
=> $"https://op.gg/champion/{Riot.GetChampion(championId).Key}/statistics/{PositionToName[position]}";

private static string GetItemUrl(int championId, Position position)
=> $"https://op.gg/champion/{Riot.GetChampion(championId).Key}/statistics{(string.IsNullOrEmpty(PositionToName[position]) ? "" : $"/{PositionToName[position]}")}/item";

public override async Task<Position[]> GetPossibleRoles(int championId)
{
return PositionToName.Keys.Except(new []{ Position.Fill }).ToArray();
Expand Down Expand Up @@ -83,5 +86,84 @@ public override async Task<string> GetSkillOrder(int championId, Position positi

return $"({string.Join(">", tips)}) {new string(slong)}";
}

public async Task<Position> GetPopularPosition(int championId)
{
var doc = new HtmlDocument();
doc.LoadHtml(await WebCache.String(GetItemUrl(championId, Position.Fill), soft: true));
var popularPositionNode = doc.DocumentNode.Descendants("link")
.FirstOrDefault(l => l.Attributes["rel"]?.Value == "canonical")
.Attributes["href"]?.Value;
var popularPosition = Regex.Match(popularPositionNode, @"/statistics/(\w+)");
return PositionToName.FirstOrDefault(p => p.Value.Equals(popularPosition.Groups[1].Value, StringComparison.CurrentCultureIgnoreCase)).Key;
}

public override async Task<ItemSet> GetItemSet(int championId, Position position)
{
if (position == Position.Fill)
{
position = await GetPopularPosition(championId);
}

var doc = new HtmlDocument();
doc.LoadHtml(await WebCache.String(GetItemUrl(championId, position), soft: true));
var contentTables = doc.DocumentNode.Descendants("table")
.Where(o => o.HasClass("champion-stats__table")).ToList();

var starterItem = GetRows("Starter Items");
var coreItems = GetRows("Core Build");
var bootsItem = GetRows("Boots");

var blocks = new List<ItemSet.SetBlock>();
AddBlockEntry(starterItem, "Starter Items");
AddBlockEntry(coreItems, "Core Build");
AddBlockEntry(bootsItem, "Boots");

return new ItemSet
{
Champion = championId,
Name = this.Name + ": " + position,
Position = position,
Blocks = blocks.ToArray()
};

List<HtmlNode> GetRows(string tableHeader)
{
var table = contentTables.FirstOrDefault(d1 => d1.Descendants("th").Any(d2 => d2.InnerText.Contains(tableHeader)));
return table?.Descendants("tr").Where(tr => tr.ChildNodes.Any(td => td.HasClass("champion-stats__table__cell"))).ToList();
}

void AddBlockEntry(List<HtmlNode> nodes, string blockName)
{
foreach (var node in nodes)
{
var items = new List<int>();
var itemCounter = 0;
node.Descendants("img").ToList().ForEach(n =>
{
if (n.ParentNode.HasClass("champion-stats__list__item"))
{
itemCounter++;
if (int.TryParse(Regex.Match(n.Attributes["src"].Value, "/item/(\\d+).png").Groups[1].Value, out var item))
{
items.Add(item);
}
}
});
if (items.Count != itemCounter)
continue;

var pickRate = node.Descendants("td").FirstOrDefault(td => td.HasClass("champion-stats__table__cell--pickrate"))?.InnerText ?? "";
pickRate = Regex.Replace(pickRate, @"[^\w|\.|%]", "");
var matches = Regex.Match(pickRate, @"(\d{1,2}\.\d{2})%(\d+)");
var winRate = node.Descendants("td").FirstOrDefault(td => td.HasClass("champion-stats__table__cell--winrate"))?.InnerText;
blocks.Add(new ItemSet.SetBlock
{
Name = $"{blockName} | PickRate {matches?.Groups[1].Value}% | PickCount {matches?.Groups[2].Value} | WinRate {winRate}",
Items = items.ToArray()
});
}
}
}
}
}