383 lines
15 KiB
C#
383 lines
15 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net;
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using System.Net.Http;
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using System.Text.RegularExpressions;
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using System.Threading.Tasks;
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using DNTPersianUtils.Core;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.Extensions.Caching.Memory;
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using Microsoft.Extensions.Configuration;
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using Newtonsoft.Json;
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using Newtonsoft.Json.Linq;
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using RMuseum.Models.Ganjoor.ViewModels;
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using RMuseum.Services.Implementation;
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using RSecurityBackend.Models.Generic;
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namespace GanjooRazor.Pages
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{
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[IgnoreAntiforgeryToken(Order = 1001)]
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public class SearchModel : LoginPartialEnabledPageModel
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{
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/// <summary>
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/// memory cache
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/// </summary>
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private readonly IMemoryCache _memoryCache;
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/// <summary>
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/// configration file reader (appsettings.json)
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/// </summary>
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private readonly IConfiguration Configuration;
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/// <summary>
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/// constructor
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/// </summary>
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/// <param name="httpClient"></param>
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/// <param name="memoryCache"></param>
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/// <param name="configuration"></param>
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public SearchModel(HttpClient httpClient, IMemoryCache memoryCache, IConfiguration configuration) : base(httpClient)
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{
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_memoryCache = memoryCache;
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Configuration
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= configuration;
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}
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/// <summary>
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/// aggressive cache
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/// </summary>
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public bool AggressiveCacheEnabled
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{
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get
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{
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try
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{
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return bool.Parse(Configuration["AggressiveCacheEnabled"]);
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}
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catch
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{
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return false;
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}
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}
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}
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public List<GanjoorPoetViewModel> Poets { get; set; }
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public string Query { get; set; }
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public int PoetId { get; set; }
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public int CatId { get; set; }
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public GanjoorPoetCompleteViewModel Poet { get; set; }
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public List<GanjoorPoemCompleteViewModel> Poems { get; set; }
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public string PagingToolsHtml { get; set; }
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public string LastError { get; set; }
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private async Task<bool> preparePoets()
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{
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var cacheKey = $"/api/ganjoor/poets";
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if (!_memoryCache.TryGetValue(cacheKey, out List<GanjoorPoetViewModel> poets))
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{
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var response = await _httpClient.GetAsync($"{APIRoot.Url}/api/ganjoor/poets");
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if (!response.IsSuccessStatusCode)
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{
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LastError = JsonConvert.DeserializeObject<string>(await response.Content.ReadAsStringAsync());
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return false;
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}
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poets = JArray.Parse(await response.Content.ReadAsStringAsync()).ToObject<List<GanjoorPoetViewModel>>();
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if (AggressiveCacheEnabled)
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{
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_memoryCache.Set(cacheKey, poets);
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}
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}
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Poets = poets;
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return true;
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}
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private async Task<bool> preparePoet()
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{
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var cacheKey = $"/api/ganjoor/poet/{PoetId}";
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if (!_memoryCache.TryGetValue(cacheKey, out GanjoorPoetCompleteViewModel poet))
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{
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var poetResponse = await _httpClient.GetAsync($"{APIRoot.Url}/api/ganjoor/poet/{PoetId}");
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if (!poetResponse.IsSuccessStatusCode)
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{
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LastError = JsonConvert.DeserializeObject<string>(await poetResponse.Content.ReadAsStringAsync());
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return false;
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}
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poet = JObject.Parse(await poetResponse.Content.ReadAsStringAsync()).ToObject<GanjoorPoetCompleteViewModel>();
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if (AggressiveCacheEnabled)
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{
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_memoryCache.Set(cacheKey, poet);
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}
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}
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Poet = poet;
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return true;
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}
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public async Task<IActionResult> OnGetPoetInformationAsync(int id)
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{
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if (id == 0)
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return new OkObjectResult(null);
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var cacheKey = $"/api/ganjoor/poet/{id}";
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if (!_memoryCache.TryGetValue(cacheKey, out GanjoorPoetCompleteViewModel poet))
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{
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var poetResponse = await _httpClient.GetAsync($"{APIRoot.Url}/api/ganjoor/poet/{id}");
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if (!poetResponse.IsSuccessStatusCode)
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{
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return BadRequest(JsonConvert.DeserializeObject<string>(await poetResponse.Content.ReadAsStringAsync()));
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}
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poet = JObject.Parse(await poetResponse.Content.ReadAsStringAsync()).ToObject<GanjoorPoetCompleteViewModel>();
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if (AggressiveCacheEnabled)
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{
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_memoryCache.Set(cacheKey, poet);
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}
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}
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return new OkObjectResult(poet);
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}
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public string AlternativeSearchPhrase { get; set; }
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public string AlternativeSearchPhraseDescription { get; set; }
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public bool Quoted { get; set; }
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public async Task<IActionResult> OnGetAsync()
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{
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if (bool.Parse(Configuration["MaintenanceMode"]))
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{
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return StatusCode(503);
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}
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LoggedIn = !string.IsNullOrEmpty(Request.Cookies["Token"]);
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Query = Request.Query["s"].ApplyCorrectYeKe().Trim();
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bool quotes = Query.IndexOf("\"") != -1;
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Query = LanguageUtils.MakeTextSearchable(Query); //replace zwnj with space
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if (quotes)
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Query = $"\"{Query}\"";
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Quoted = quotes && Query.Contains(" ");
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AlternativeSearchPhrase = Quoted ? WebUtility.UrlEncode(Query.Replace("\"", "")) : Query.Contains(" ") ? WebUtility.UrlEncode($"\"{Query}\"") : "";
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AlternativeSearchPhraseDescription = "";
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if (Quoted)
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{
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AlternativeSearchPhraseDescription = "جستجوی ";
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bool needsComma = false;
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var splitteds = Query.Replace("\"", "").Split(' ');
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for(int sp = 0; sp < splitteds.Length - 1; sp++)
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{
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var splitted = splitteds[sp];
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if (needsComma)
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AlternativeSearchPhraseDescription += "، ";
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AlternativeSearchPhraseDescription += $"«{splitted}»";
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needsComma = true;
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}
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AlternativeSearchPhraseDescription += $" و «{splitteds[splitteds.Length - 1]}»";
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AlternativeSearchPhraseDescription += " بدون لحاظ کردن ترتیب واژگان";
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}
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else
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if (Query.Contains(" "))
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{
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AlternativeSearchPhraseDescription = $"جستجوی دقیق عبارت «{Query}»";
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}
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PoetId = string.IsNullOrEmpty(Request.Query["author"]) ? 0 : int.Parse(Request.Query["author"]);
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CatId = string.IsNullOrEmpty(Request.Query["cat"]) ? 0 : int.Parse(Request.Query["cat"]);
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ViewData["GoogleAnalyticsCode"] = Configuration["GoogleAnalyticsCode"];
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//todo: use html master layout or make it partial
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// 1. poets
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if (false == (await preparePoets()))
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return Page();
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var poetName = Poets.SingleOrDefault(p => p.Id == PoetId);
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if (poetName != null)
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{
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ViewData["Title"] = $"گنجور » نتایج جستجو برای {Query} در آثار {poetName?.Name}";
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}
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else
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{
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if (!string.IsNullOrEmpty(Query))
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{
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ViewData["Title"] = $"گنجور » نتایج جستجو برای {Query}";
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}
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else
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{
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ViewData["Title"] = $"گنجور » جستجو";
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}
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}
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if (PoetId != 0)
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{
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if (false == (await preparePoet()))
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return Page();
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}
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// 2. search verses
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int pageNumber = 1;
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if (!string.IsNullOrEmpty(Request.Query["page"]))
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{
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pageNumber = int.Parse(Request.Query["page"]);
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}
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if (pageNumber > 1)
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{
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ViewData["Title"] += $" - صفحهٔ {pageNumber.ToPersianNumbers()}";
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}
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HttpResponseMessage searchQueryResponse = null;
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if (!string.IsNullOrEmpty(Query))
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{
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searchQueryResponse = await _httpClient.GetAsync($"{APIRoot.Url}/api/ganjoor/poems/search?term={Query}&poetId={PoetId}&catId={CatId}&PageNumber={pageNumber}&PageSize=20");
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if (!searchQueryResponse.IsSuccessStatusCode)
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{
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LastError = JsonConvert.DeserializeObject<string>(await searchQueryResponse.Content.ReadAsStringAsync());
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return Page();
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}
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Poems = JArray.Parse(await searchQueryResponse.Content.ReadAsStringAsync()).ToObject<List<GanjoorPoemCompleteViewModel>>();
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}
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if (Poems != null && Poems.Count == 0)
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{
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Poems = null;
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}
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if (Poems != null)
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{
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// highlight searched word
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string[] queryParts = Query.IndexOf('"') == 0 && Query.LastIndexOf('"') == (Query.Length - 1) ?
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new string[] { Query.Replace("\"", "") }
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:
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Query.Replace("\"", "").Split(' ', StringSplitOptions.RemoveEmptyEntries);
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foreach (var poem in Poems)
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{
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string[] lines = poem.PlainText.Split(Environment.NewLine, StringSplitOptions.RemoveEmptyEntries);
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List<int> linesInExcerpt = new List<int>();
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for (int i = 0; i < lines.Length; i++)
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{
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foreach (var queryPart in queryParts)
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{
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if (lines[i].IndexOf(queryPart) != -1)
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{
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if (i > 0)
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{
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if (linesInExcerpt.IndexOf(i - 1) == -1)
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{
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linesInExcerpt.Add(i - 1);
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}
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}
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if (linesInExcerpt.IndexOf(i) == -1)
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{
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linesInExcerpt.Add(i);
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}
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if (i < (lines.Length - 1))
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linesInExcerpt.Add(i + 1);
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break;
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}
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}
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}
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string plainText = "";
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for (int i = 0; i < linesInExcerpt.Count; i++)
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{
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if (linesInExcerpt[i] > 0 && linesInExcerpt.IndexOf(linesInExcerpt[i] - 1) == -1)
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plainText += "... ";
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plainText += $"{lines[linesInExcerpt[i]]}";
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if (linesInExcerpt[i] < (lines.Length - 1) && linesInExcerpt.IndexOf(linesInExcerpt[i] + 1) == -1)
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plainText += " ...";
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plainText += $"{Environment.NewLine}";
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}
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string finalPlainText = "";
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foreach (string line in plainText.Split(Environment.NewLine, StringSplitOptions.RemoveEmptyEntries))
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{
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finalPlainText += $"<p>{line}</p>";
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}
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poem.PlainText = finalPlainText;
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for (int i = 0; i < queryParts.Length; i++)
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{
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string cssClass = i % 3 == 0 ? "hilite" : i % 3 == 1 ? "hilite2" : "hilite3";
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poem.PlainText = Regex.Replace(poem.PlainText, queryParts[i], $"<span class=\"{cssClass}\">{queryParts[i]}</span>", RegexOptions.IgnoreCase | RegexOptions.RightToLeft); ;
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}
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}
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if (searchQueryResponse != null)
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{
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string paginationMetadataJsonValue = searchQueryResponse.Headers.GetValues("paging-headers").FirstOrDefault();
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if (!string.IsNullOrEmpty(paginationMetadataJsonValue))
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{
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PaginationMetadata paginationMetadata = JsonConvert.DeserializeObject<PaginationMetadata>(paginationMetadataJsonValue);
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string catQuery = "";
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if (!string.IsNullOrEmpty(Request.Query["cat"]))
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{
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catQuery = $"&cat={Request.Query["cat"]}";
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}
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PagingToolsHtml = GeneratePagingBarHtml(paginationMetadata, $"/search?s={WebUtility.UrlEncode(Query)}&author={PoetId}{catQuery}");
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}
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}
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}
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return Page();
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}
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private string GeneratePagingBarHtml(PaginationMetadata paginationMetadata, string routeStartWithQueryStrings)
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{
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string htmlText = $"<div>{Environment.NewLine}";
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if (paginationMetadata != null && paginationMetadata.totalPages > 1)
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{
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if (paginationMetadata.currentPage > 3)
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{
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htmlText += $"<a href=\"{routeStartWithQueryStrings.Replace("\"", "%22")}&page=1\"><div class=\"circled-number\">۱</div></a>{Environment.NewLine} …";
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}
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for (int i = paginationMetadata.currentPage - 2; i <= (paginationMetadata.currentPage + 2); i++)
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{
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if (i >= 1 && i <= paginationMetadata.totalPages)
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{
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if (i == paginationMetadata.currentPage)
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{
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htmlText += $"<div class=\"circled-number-diff\">{i.ToPersianNumbers()}</div>";
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}
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else
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{
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htmlText += $"<a href=\"{routeStartWithQueryStrings.Replace("\"", "%22")}&page={i}\"><div class=\"circled-number\">{i.ToPersianNumbers()}</div></a>{Environment.NewLine}";
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}
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}
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}
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if (paginationMetadata.totalPages > (paginationMetadata.currentPage + 2))
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{
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htmlText += $"… <a href=\"{routeStartWithQueryStrings.Replace("\"", "%22")}&page={paginationMetadata.totalPages}\"><div class=\"circled-number\">{paginationMetadata.totalPages.ToPersianNumbers()}</div></a>{Environment.NewLine}";
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}
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}
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htmlText += $"</div>{Environment.NewLine}";
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return htmlText;
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}
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}
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}
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