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‎LunchTodayApi/.idea/.idea.LunchTodayApi/.idea/.gitignore

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‎LunchTodayApi/.idea/.idea.LunchTodayApi/.idea/indexLayout.xml

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‎LunchTodayApi/.idea/.idea.LunchTodayApi/.idea/vcs.xml

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‎LunchTodayApi/LunchTodayApi.sln

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Microsoft Visual Studio Solution File, Format Version 12.00
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LunchTodayApi", "LunchTodayApi\LunchTodayApi.csproj", "{2BAAAA8F-8FB2-416C-9875-0B8E570D2958}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{2BAAAA8F-8FB2-416C-9875-0B8E570D2958}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{2BAAAA8F-8FB2-416C-9875-0B8E570D2958}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{2BAAAA8F-8FB2-416C-9875-0B8E570D2958}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{2BAAAA8F-8FB2-416C-9875-0B8E570D2958}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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EndGlobal

‎LunchTodayApi/LunchTodayApi/Controllers/WeatherForecastController.cs

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using Microsoft.AspNetCore.Mvc;
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namespace LunchTodayApi.Controllers;
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[ApiController]
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[Route("[controller]")]
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public class WeatherForecastController : ControllerBase
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{
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private static readonly string[] Summaries = new[]
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{
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"Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
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};
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private readonly ILogger<WeatherForecastController> _logger;
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public WeatherForecastController(ILogger<WeatherForecastController> logger)
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{
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_logger = logger;
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}
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[HttpGet(Name = "GetWeatherForecast")]
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public IEnumerable<WeatherForecast> Get()
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{
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return Enumerable.Range(1, 5).Select(index => new WeatherForecast
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{
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Date = DateOnly.FromDateTime(DateTime.Now.AddDays(index)),
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TemperatureC = Random.Shared.Next(-20, 55),
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Summary = Summaries[Random.Shared.Next(Summaries.Length)]
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})
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.ToArray();
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}
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}

‎LunchTodayApi/LunchTodayApi/LunchMenuFinder/RestaurantCrawler.cs

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using System.Net;
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using System.Text.RegularExpressions;
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using CSharpFunctionalExtensions;
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using ScrapySharp.Extensions;
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using ScrapySharp.Network;
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namespace LunchTodayApi.LunchMenuFinder;
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public class RestaurantCrawler : IRestaurantCrawler
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{
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private readonly ScrapingBrowser _browser = new();
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private static readonly List<string> SwedishWeekDays = new() { "måndag", "tisdag", "onsdag", "torsdag", "fredag" };
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public async Task<Result<RestaurantResult, Exception>> GetWeeklyLunchMenu(string url) =>
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await NavigateToPage(url)
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.Bind(wp => ExtractAllLinks(wp, url))
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.Bind(FindLunchPage)
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.Bind(GetMenusFromPage)
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.Map(x => new RestaurantResult
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{
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LunchMenus = x,
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RestaurantUrl = url
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});
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private Result<List<LunchMenuResult>, Exception> GetMenusFromPage(string pageContent) =>
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ContainsAllWeekDays(pageContent, SwedishWeekDays)
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? GetLunchesFromPage(pageContent, SwedishWeekDays)
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: new Exception("Could not find all weekdays");
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private Result<List<LunchMenuResult>, Exception> GetLunchesFromPage(string pageContent,
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List<string> swedishWeekDays) =>
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Result.Try<List<LunchMenuResult>, Exception>(() =>
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{
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var results = new List<LunchMenuResult>();
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foreach (var weekDay in swedishWeekDays)
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{
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var nextWeekDay = weekDay == "fredag" ? null : swedishWeekDays[swedishWeekDays.IndexOf(weekDay) + 1];
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int indexOfWeekDay = pageContent.IndexOf(weekDay, StringComparison.InvariantCultureIgnoreCase);
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if (nextWeekDay is not null)
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{
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var lunchMenuDataResult = Result.Try(() =>
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{
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var indexOfNextWeekDay =
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pageContent.IndexOf(nextWeekDay, StringComparison.InvariantCultureIgnoreCase);
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return pageContent.Substring(indexOfWeekDay, indexOfNextWeekDay - indexOfWeekDay);
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});
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var lunchMenuResult = GetLunchMenuResult(lunchMenuDataResult, weekDay);
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if (lunchMenuResult.IsSuccess)
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results.Add(lunchMenuResult.Value);
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}
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else
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{
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const int takeNoOfRows = 10;
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var lunchMenuDataResult = Result.Try(() =>
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{
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var indexOfLastWeekDay = pageContent.IndexOf(weekDay, StringComparison.InvariantCultureIgnoreCase);
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var rowsAfterFriday = pageContent.Substring(indexOfLastWeekDay).Split("\n").Take(takeNoOfRows);
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return string.Join("\n", rowsAfterFriday);
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});
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var lunchMenuResult = GetLunchMenuResult(lunchMenuDataResult, weekDay);
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if (lunchMenuResult.IsSuccess)
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results.Add(lunchMenuResult.Value);
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}
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}
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return results;
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}, e => e);
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private Result<LunchMenuResult> GetLunchMenuResult(Result<string> lunchMenuDataResult, string weekDay) =>
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lunchMenuDataResult
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.Ensure(s => !string.IsNullOrEmpty(s), "No lunch menu found")
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.Ensure(s => s.Contains(weekDay, StringComparison.InvariantCultureIgnoreCase), "Not weekly menu")
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.MapTry(s => RemoveWeekDay(s, weekDay))
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.MapTry(WebUtility.HtmlDecode)
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.MapTry(s => s.Trim())
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.MapTry(s => s.TrimStart('\n'))
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.MapTry(s => s.Replace("\n", "<br>"))
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.MapTry(RemoveConsecutiveSpaces)
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.Map(s => new LunchMenuResult { Menu = s, Weekday = weekDay });
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private string RemoveConsecutiveSpaces(string lunchMenu)
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{
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lunchMenu = Regex.Replace(lunchMenu, @"\s+", " ");
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return lunchMenu;
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}
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private string RemoveWeekDay(string lunchMenu, string weekDay)
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{
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var lastIndexOfWeekDay = lunchMenu.LastIndexOf(weekDay, StringComparison.InvariantCultureIgnoreCase);
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lunchMenu = lunchMenu[(lastIndexOfWeekDay+weekDay.Length)..];
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//lunchMenu = lunchMenu.Replace(weekDay, "", StringComparison.InvariantCultureIgnoreCase);
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return lunchMenu;
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}
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private static bool ContainsAllWeekDays(string pageContent, List<string> swedishWeekDays) =>
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swedishWeekDays.All(x => pageContent.ToLower().Contains(x));
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private async Task<Result<string, Exception>> FindLunchPage(IEnumerable<Uri> links)
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{
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try
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{
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var lunchPageLink = links.FirstOrDefault(x => x.AbsoluteUri.ToLower().Contains("lunch"));
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if (lunchPageLink == null)
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{
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return new Exception("Could not find any lunch page");
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}
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return await Result.Try<string, Exception>(
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async () => await GetLunchPageText(lunchPageLink),
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e => e);
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}
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catch (Exception e)
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{
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return e;
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}
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}
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private async Task<string> GetLunchPageText(Uri lunchPageLink)
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{
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var webpage = await _browser.NavigateToPageAsync(lunchPageLink);
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var lunchPageText = webpage.Html.InnerText;
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lunchPageText = lunchPageText.Replace("\r", "");
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lunchPageText = lunchPageText.Replace("\t", "");
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return lunchPageText;
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}
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private Result<IEnumerable<Uri>, Exception> ExtractAllLinks(WebPage webpage, string url) =>
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Result.Try<IEnumerable<Uri>, Exception>(() =>
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{
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var links = webpage.Html.CssSelect("a");
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var lunchLinks = links.Where(x => x.InnerText.ToLower().Contains("lunch"))
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.Select(x => new Uri(new Uri(url), x.Attributes["href"].Value))
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.ToList();
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return lunchLinks;
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}, e => e);
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private async Task<Result<WebPage, Exception>> NavigateToPage(string url)
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{
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try
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{
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return await _browser.NavigateToPageAsync(new Uri(url));
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}
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catch (Exception e)
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{
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return e;
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}
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}
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}
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public interface ILogger<T>
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{
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Task Log(string s);
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}
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public interface IRestaurantCrawler
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{
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}
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public class RestaurantResult
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{
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public List<LunchMenuResult> LunchMenus { get; set; }
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public string RestaurantUrl { get; set; }
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}
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public class LunchMenuResult
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{
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public string Menu { get; set; }
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public string Weekday { get; set; }
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}

‎LunchTodayApi/LunchTodayApi/LunchTodayApi.csproj

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<Project Sdk="Microsoft.NET.Sdk.Web">
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<PropertyGroup>
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<TargetFramework>net7.0</TargetFramework>
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<Nullable>enable</Nullable>
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<ImplicitUsings>enable</ImplicitUsings>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="7.0.7"/>
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<PackageReference Include="Swashbuckle.AspNetCore" Version="6.5.0"/>
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</ItemGroup>
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</Project>

‎LunchTodayApi/LunchTodayApi/Program.cs

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var builder = WebApplication.CreateBuilder(args);
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// Add services to the container.
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builder.Services.AddControllers();
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// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
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builder.Services.AddEndpointsApiExplorer();
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builder.Services.AddSwaggerGen();
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var app = builder.Build();
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// Configure the HTTP request pipeline.
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if (app.Environment.IsDevelopment())
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{
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app.UseSwagger();
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app.UseSwaggerUI();
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}
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app.UseHttpsRedirection();
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app.UseAuthorization();
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app.MapControllers();
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app.Run();

‎LunchTodayApi/LunchTodayApi/Properties/launchSettings.json

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{
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"$schema": "https://json.schemastore.org/launchsettings.json",
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"iisSettings": {
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"windowsAuthentication": false,
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"anonymousAuthentication": true,
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"iisExpress": {
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"applicationUrl": "http://localhost:19023",
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"sslPort": 44395
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}
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},
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"profiles": {
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"http": {
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"commandName": "Project",
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"dotnetRunMessages": true,
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"launchBrowser": true,
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"launchUrl": "swagger",
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"applicationUrl": "http://localhost:5293",
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"environmentVariables": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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}
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},
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"https": {
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"commandName": "Project",
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"dotnetRunMessages": true,
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"launchBrowser": true,
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"launchUrl": "swagger",
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"applicationUrl": "https://localhost:7016;http://localhost:5293",
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"environmentVariables": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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}
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},
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"IIS Express": {
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"commandName": "IISExpress",
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"launchBrowser": true,
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"launchUrl": "swagger",
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"environmentVariables": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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}
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}
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}
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}

‎LunchTodayApi/LunchTodayApi/RestaurantFinder/IRestaurantFinder.cs

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namespace LunchTodayApi.RestaurantFinders;
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public class IRestaurantFinder
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{
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}

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