static string RecipePage(HttpListenerRequest request, HttpListenerResponse result, SessionInfo session)
{
PreferenceInfo preferences = preferences_[session.User.Username];
if (null == preferences)
{
preferences = new PreferenceInfo();
}
Dictionary <string, int> preferenceLookup = new Dictionary <string, int>();
foreach (var p in preferences.IngredientPreferences)
{
preferenceLookup[p.Ingredient] = p.Score;
}
var getArgs = HttpUtility.ParseQueryString(request.Url.Query);
double strictness = Math.Max(1e-4, double.Parse(getArgs["strictness"]));
var rankedRecipes = new List <PreferenceScore>();
foreach (var recipe in recipes_)
{
rankedRecipes.Add(GetPreferenceScore(recipe, preferenceLookup, strictness));
}
rankedRecipes.Sort();
StringBuilder buffer = new StringBuilder();
buffer.Append(
@"
<html>
<title>")
.Append(session.User.Username)
.Append(
@"'s personalized recipes</title>
<body style='font-family:tahoma,arial,sans-serif;'>
<fieldset>
");
AddLegend(session.User.Username, buffer);
foreach (var recipe in rankedRecipes)
{
var owp = recipe.Recipe.Recipe.OriginalWebPage;
buffer.AppendFormat("<br><a href='{2}' target='_blank' title='score: {0:0%}'>{1}</a><br>\n",
recipe.Score, RecipeDownloader.RemoveSpecialCharacters(owp.Name), owp.UrlRoot + owp.Url);
if (recipe.Positives != null)
{
buffer.Append("<table border=0 cellpadding=0 cellspacing=0><tr><td bgcolor='lightcyan'>");
foreach (string entry in recipe.Positives)
{
buffer.Append("<li>").Append(entry).Append("</li>\n");
}
buffer.Append("</table>");
}
if (recipe.Neutrals != null)
{
buffer.Append("<table border=0 cellpadding=0 cellspacing=0><tr><td bgcolor='ivory'>");
foreach (string entry in recipe.Neutrals)
{
buffer.Append("<li>").Append(entry).Append("</li>\n");
}
buffer.Append("</table>");
}
if (recipe.Negatives != null)
{
buffer.Append("<table border=0 cellpadding=0 cellspacing=0><tr><td bgcolor='peachpuff'>");
foreach (string entry in recipe.Negatives)
{
buffer.Append("<li>").Append(entry).Append("</li>\n");
}
buffer.Append("</table>");
}
}
buffer.AppendLine(
@"
</fieldset>
</body>
</html>
");
return(buffer.ToString());
}
static string RecipeJsonPage(HttpListenerRequest request, HttpListenerResponse result, SessionInfo session)
{
var args = GetPostArgs(request);
try
{
var preferences = args["preferences"];
if (null == preferences)
{
throw new ArgumentException("request does not contain post argument 'preferences'");
}
var strictnessStr = args["strictness"];
if (null == strictnessStr)
{
throw new ArgumentException("request does not contain post argument 'strictness'");
}
var limitStr = args["limit"];
if (null == limitStr)
{
throw new ArgumentException("request does not contain post argument 'limit'");
}
int limit;
if (!int.TryParse(limitStr, out limit) || !(0 < limit))
{
throw new ArgumentException("limit " + limitStr + " is not a positive integer");
}
double strictness;
if (!double.TryParse(strictnessStr, out strictness))
{
throw new ArgumentException("strictness " + strictnessStr + " is not a floating-point number");
}
strictness = Math.Max(1e-4, strictness);
var prefs = JsonConvert.DeserializeXNode(preferences);
Dictionary <string, int> preferenceLookup = new Dictionary <string, int>();
foreach (var element in prefs.Root.Elements())
{
if (element.HasAttributes)
{
throw new ArgumentException("preferences:" + element.Name + " has some kind of attributes inside");
}
if (element.HasElements)
{
throw new ArgumentException("preferences:" + element.Name + " has some kind of elements inside");
}
if (element.IsEmpty)
{
throw new ArgumentException("preferences:" + element.Name + " is empty");
}
int score;
if (!int.TryParse(element.Value, out score))
{
throw new ArgumentException("preferences:" + element.Name + " has a score of " + element.Value + ", which is not an integer");
}
preferenceLookup[element.Name.ToString()] = score;
}
var rankedRecipes = new List <PreferenceScore>();
foreach (var recipe in recipes_)
{
rankedRecipes.Add(GetPreferenceScore(recipe, preferenceLookup, strictness));
}
rankedRecipes.Sort();
StringBuilder buffer = new StringBuilder();
int nResults = 0;
foreach (var recipe in rankedRecipes)
{
++nResults;
if (nResults > limit)
{
break;
}
buffer.AppendLine("{");
buffer.AppendLine(" \"title\" : \"" + RecipeDownloader.RemoveSpecialCharacters(recipe.Recipe.Recipe.OriginalWebPage.Name) + "\",");
buffer.AppendLine(" \"url\" : \"" + recipe.Recipe.Recipe.OriginalWebPage.UrlRoot + recipe.Recipe.Recipe.OriginalWebPage.Url + "\",");
buffer.AppendLine(" \"positives\" : [");
if (recipe.Positives != null)
{
foreach (string entry in recipe.Positives)
{
buffer.Append(" \"").Append(entry).Append("\",").AppendLine();
}
}
buffer.AppendLine(" ],");
buffer.AppendLine(" \"neutrals\" : [");
if (recipe.Neutrals != null)
{
foreach (string entry in recipe.Neutrals)
{
buffer.Append(" \"").Append(entry).Append("\",").AppendLine();
}
}
buffer.AppendLine(" ],");
buffer.AppendLine(" \"negatives\" : [");
if (recipe.Negatives != null)
{
foreach (string entry in recipe.Negatives)
{
buffer.AppendLine(" \"").Append(entry).Append("\",").AppendLine();
}
}
buffer.AppendLine(" ],");
buffer.AppendLine("},");
}
return("{ \"recipes\" : [\n" + buffer.ToString() + "]\n }\n");
}
catch (Exception e)
{
StringBuilder preferenceBlob = new StringBuilder();
if (session.User != null)
{
PreferenceInfo preferences = preferences_[session.User.Username];
if (null != preferences)
{
preferenceBlob.AppendLine("{ \"preferences\" : {");
foreach (var p in preferences.IngredientPreferences)
{
preferenceBlob.AppendLine(" \"" + p.Ingredient + "\" : \"" + p.Score.ToString() + "\",");
}
preferenceBlob.AppendLine("} }");
}
}
return
("<html><body>" + e.ToString() + "<br>\n" +
"<form method=post>\n" +
"strictness:<input type='text' name='strictness' value='1'><br>\n" +
"limit:<input type='text' name='limit' value='15'><br>\n" +
"preferences:<br><textarea name=preferences rows=20 cols=80>" + preferenceBlob.ToString() + "</textarea><br>\n" +
"<input type=submit>\n" +
"</form>\n" +
"</body></html>");
}
}
