95 lines
3.7 KiB
C#
95 lines
3.7 KiB
C#
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using Microsoft.AspNetCore.Rewrite;
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using NLog;
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using System.Text.RegularExpressions;
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using ILogger = NLog.ILogger;
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namespace ngaoda
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{
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public class CustomRewriteRule() : IRule
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{
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private static readonly ILogger Logger = LogManager.GetCurrentClassLogger();
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public void ApplyRule(RewriteContext context)
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{
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try
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{
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var request = context.HttpContext.Request;
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var path = request.Path.ToString();
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var query = request.QueryString.ToString();
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// Pattern match URL
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var regexPattern = @"\/resources\/(.+)\.(jpg|jpeg|png)";
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//var conditionPattern = @"w=(\d+)&h=(\d+)&q=(\d+)&dpr=(\d+)&fit=(\w+)";
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//var conditionPattern = @"(?:w=(\d+)|h=(\d+)|q=(\d+)|dpr=(\d+)|fit=(\w+))";
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var conditionPattern = @"(?:w=(\d+)|h=(\d+)|q=(\d+)|dpr=(\d+)|fit=(\w+))(?:&|$)";
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var match = Regex.Match(path, regexPattern);
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var conditionMatches = Regex.Matches(query, conditionPattern);
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//if (match.Success && conditionMatch.Success)
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//{
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// //var imagePath = match.Groups[1].Value + "." + match.Groups[3].Value;
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// var width = conditionMatch.Groups[1].Value;
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// var height = conditionMatch.Groups[2].Value;
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// var quality = conditionMatch.Groups[3].Value;
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// var dpr = conditionMatch.Groups[4].Value;
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// var fit = conditionMatch.Groups[5].Value;
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if (match.Success && conditionMatches.Count > 0)
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{
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var width = "";
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var height = "";
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var quality = "";
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var dpr = "";
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var fit = "";
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foreach (Match conditionMatch in conditionMatches)
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{
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if (conditionMatch.Groups[1].Success)
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{
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width = conditionMatch.Groups[1].Value;
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}
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else if (conditionMatch.Groups[2].Success)
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{
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height = conditionMatch.Groups[2].Value;
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}
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else if (conditionMatch.Groups[3].Success)
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{
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quality = conditionMatch.Groups[3].Value;
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}
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else if (conditionMatch.Groups[4].Success)
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{
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dpr = conditionMatch.Groups[4].Value;
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}
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else if (conditionMatch.Groups[5].Success)
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{
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fit = conditionMatch.Groups[5].Value;
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}
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}
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// Rewrite path internally
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context.HttpContext.Request.Path = "/ImageProcessing"; // nhảy sang api trong ImageProcessingController
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context.HttpContext.Request.QueryString = new QueryString($"?path={path.Substring(1)}&w={width}&h={height}&q={quality}&dpr={dpr}&fit={fit}");
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Logger.Info("url-image-matched");
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}
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//context.Result = RuleResult.SkipRemainingRules; // Bỏ qua các quy tắc rewrite còn lại
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}
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catch (Exception ex)
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{
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// Xử lý exception tại đây
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// Ví dụ: ghi log exception
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Console.WriteLine($"Exception in ApplyRule middleware: {ex.Message}");
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// Rethrow để cho phép ngoại lệ tiếp tục lan ra nếu cần thiết
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throw;
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}
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}
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}
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}
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