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https://github.com/NoiTheCat/BirthdayBot.git
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Add more supported input formats
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1 changed files with 102 additions and 67 deletions
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@ -19,25 +19,32 @@ namespace BirthdayBot.UserInterface
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("remove", CmdRemove)
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};
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#region Date parsing
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const string FormatError = ":x: Unrecognized date format. The following formats are accepted, as examples: "
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+ "`15-jan`, `jan-15`, `15 jan`, `jan 15`, `15 January`, `January 15`.";
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private static readonly Regex DateParse1 = new Regex(@"^(?<day>\d{1,2})[ -](?<month>[A-Za-z]+)$", RegexOptions.Compiled);
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private static readonly Regex DateParse2 = new Regex(@"^(?<month>[A-Za-z]+)[ -](?<day>\d{1,2})$", RegexOptions.Compiled);
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/// <summary>
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/// Parses date parameter. Strictly takes dd-MMM or MMM-dd only. Eliminates ambiguity over dd/mm vs mm/dd.
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/// Parses a date input.
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/// </summary>
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/// <returns>Tuple: month, day</returns>
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/// <exception cref="FormatException">Thrown for any parsing issue. Reason is expected to be sent to Discord as-is.</exception>
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/// <exception cref="FormatException">
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/// Thrown for any parsing issue. Reason is expected to be sent to Discord as-is.
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/// </exception>
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private (int, int) ParseDate(string dateInput)
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{
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const string FormatError = ":x: Incorrect date format. Use a three-letter abbreviation and a number separated by "
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+ "hyphen to specify a date. Examples: `jan-15` `23-aug` `may-12` `5-jun`";
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// Not doing DateTime.Parse. Setting it up is rather complicated, and it's probably case sensitive.
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// Admittedly, doing it the way it's being done here probably isn't any better.
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var m = Regex.Match(dateInput, @"^(?<day>\d{1,2})-(?<month>[A-Za-z]{3})$");
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var m = DateParse1.Match(dateInput);
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if (!m.Success)
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{
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// Flip the fields around, try again
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m = Regex.Match(dateInput, @"^(?<month>[A-Za-z]{3})-(?<day>\d{1,2})$");
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m = DateParse2.Match(dateInput);
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if (!m.Success) throw new FormatException(FormatError);
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}
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int day;
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int day, month;
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string monthVal;
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try
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{
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day = int.Parse(m.Groups["day"].Value);
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@ -46,60 +53,69 @@ namespace BirthdayBot.UserInterface
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{
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throw new Exception(FormatError);
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}
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var monthVal = m.Groups["month"].Value;
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int month;
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var dayUpper = 31; // upper day of month check
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switch (monthVal.ToLower())
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{
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case "jan":
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month = 1;
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break;
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case "feb":
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month = 2;
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dayUpper = 29;
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break;
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case "mar":
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month = 3;
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break;
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case "apr":
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month = 4;
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dayUpper = 30;
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break;
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case "may":
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month = 5;
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break;
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case "jun":
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month = 6;
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dayUpper = 30;
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break;
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case "jul":
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month = 7;
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break;
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case "aug":
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month = 8;
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break;
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case "sep":
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month = 9;
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dayUpper = 30;
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break;
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case "oct":
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month = 10;
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break;
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case "nov":
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month = 11;
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dayUpper = 30;
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break;
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case "dec":
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month = 12;
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break;
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default:
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throw new FormatException(":x: Invalid month name. Use a three-letter month abbreviation.");
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}
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monthVal = m.Groups["month"].Value;
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int dayUpper; // upper day of month check
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(month, dayUpper) = GetMonth(monthVal);
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if (day == 0 || day > dayUpper) throw new FormatException(":x: The date you specified is not a valid calendar date.");
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return (month, day);
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}
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/// <summary>
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/// Returns information for a given month input.
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/// </summary>
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/// <param name="input"></param>
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/// <returns>Tuple: Month value, upper limit of days in the month</returns>
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/// <exception cref="FormatException">
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/// Thrown on error. Send out to Discord as-is.
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/// </exception>
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private (int, int) GetMonth(string input)
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{
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switch (input.ToLower())
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{
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case "jan":
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case "january":
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return (1, 31);
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case "feb":
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case "february":
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return (2, 29);
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case "mar":
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case "march":
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return (3, 31);
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case "apr":
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case "april":
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return (4, 30);
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case "may":
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return (5, 31);
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case "jun":
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case "june":
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return (6, 30);
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case "jul":
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case "july":
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return (7, 31);
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case "aug":
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case "august":
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return (8, 31);
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case "sep":
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case "september":
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return (9, 30);
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case "oct":
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case "october":
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return (10, 31);
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case "nov":
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case "november":
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return (11, 30);
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case "dec":
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case "december":
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return (12, 31);
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default:
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throw new FormatException($":x: Can't determine month name `{input}`. Check your spelling and try again.");
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}
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}
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#endregion
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#region Documentation
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public static readonly CommandDocumentation DocSet =
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new CommandDocumentation(new string[] { "set (date) [zone]" }, "Registers your birth date. Time zone is optional.",
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@ -114,25 +130,44 @@ namespace BirthdayBot.UserInterface
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private async Task CmdSet(ShardInstance instance, GuildConfiguration gconf,
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string[] param, SocketTextChannel reqChannel, SocketGuildUser reqUser)
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{
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// Requires one parameter. Optionally two.
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if (param.Length < 2 || param.Length > 3)
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// Requires *some* parameter.
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if (param.Length < 2)
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{
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await reqChannel.SendMessageAsync(ParameterError, embed: DocSet.UsageEmbed).ConfigureAwait(false);
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return;
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}
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int bmonth, bday;
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string btz = null;
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// Date format accepts spaces, and then we look for an additional parameter.
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// This is weird. Gotta compensate.
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var fullinput = "";
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for (int i = 1; i < param.Length; i++)
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{
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fullinput += " " + param[i];
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}
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fullinput = fullinput[1..];
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// Attempt to get last "parameter"; check if it's a time zone value
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string timezone = null;
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var fli = fullinput.LastIndexOf(' ');
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if (fli != -1)
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{
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var tzstring = fullinput[(fli+1)..];
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try
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{
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var res = ParseDate(param[1]);
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bmonth = res.Item1;
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bday = res.Item2;
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if (param.Length == 3) btz = ParseTimeZone(param[2]);
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timezone = ParseTimeZone(tzstring);
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// If we got here, last parameter was indeed a time zone. Trim it away for what comes next.
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fullinput = fullinput[0..fli];
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}
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catch (FormatException) { } // Was not a time zone name. Do nothing.
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}
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int bmonth, bday;
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try
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{
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(bmonth, bday) = ParseDate(fullinput);
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}
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catch (FormatException ex)
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{
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// Our parse methods' FormatException has its message to send out to Discord.
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// Our parse method's FormatException has its message to send out to Discord.
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reqChannel.SendMessageAsync(ex.Message, embed: DocSet.UsageEmbed).Wait();
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return;
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}
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@ -143,7 +178,7 @@ namespace BirthdayBot.UserInterface
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{
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var user = await GuildUserConfiguration.LoadAsync(gconf.GuildId, reqUser.Id).ConfigureAwait(false);
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known = user.IsKnown;
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await user.UpdateAsync(bmonth, bday, btz).ConfigureAwait(false);
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await user.UpdateAsync(bmonth, bday, timezone).ConfigureAwait(false);
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}
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catch (Exception ex)
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{
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