WorldTime/Commands/UserCommands.cs

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C#
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using Discord.Interactions;
using System.Text;
namespace WorldTime.Commands;
public class UserCommands : CommandsBase {
#region Help strings
const string HelpHelp = "Displays a list of available bot commands.";
const string HelpList = "Shows the current time for all recently active known users.";
const string HelpSet = "Adds or updates your time zone to the bot.";
const string HelpRemove = "Removes your time zone information from this bot.";
#endregion
[SlashCommand("help", HelpHelp)]
[CommandContextType(InteractionContextType.Guild, InteractionContextType.BotDm)]
public async Task CmdHelp() {
var version = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version!.ToString(3);
var guildct = ShardedClient.Guilds.Count;
using var db = DbContext;
var uniquetz = db.GetDistinctZoneCount();
await RespondAsync(embed: new EmbedBuilder() {
Title = "Help & About",
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Description =
$"World Time v{version} - Serving {guildct} communities across {uniquetz} time zones.\n\n"
+ "This bot is provided for free, without any paywalled 'premium' features. "
+ "If you've found this bot useful, please consider contributing via the "
+ "bot author's page on Ko-fi: https://ko-fi.com/noithecat.",
Footer = new EmbedFooterBuilder() {
IconUrl = Context.Client.CurrentUser.GetAvatarUrl(),
Text = "World Time"
}
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}.AddField(inline: false, name: "Commands", value:
$"""
`/help` - {HelpHelp}
`/list` - {HelpList}
`/set` - {HelpSet}
`/remove` - {HelpRemove}
"""
).AddField(inline: false, name: "Admin commands", value:
$"""
`/config use-12hour` - {ConfigCommands.HelpUse12}
`/config private-confirms` - {ConfigCommands.HelpPrivateConfirms}
`/set-for` - {ConfigCommands.HelpSetFor}
`/remove-for` - {ConfigCommands.HelpRemoveFor}
"""
).AddField(inline: false, name: "Zones", value:
"This bot accepts zone names from the IANA Time Zone Database (a.k.a. Olson Database). " +
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"A useful tool to determine yours can be found at: https://zones.arilyn.cc/"
).Build());
}
[SlashCommand("list", HelpList)]
[CommandContextType(InteractionContextType.Guild)]
public async Task CmdList([Summary(description: "A specific user whose time to look up.")]SocketGuildUser? user = null) {
if (!await AreUsersDownloadedAsync(Context.Guild)) {
await RespondAsync(ErrNoUserCache, ephemeral: true);
return;
}
if (user == null) {
// No parameter - full listing
await CmdListWithoutParamAsync();
} else {
// Has parameter - do single user listing
await CmdListWithUserParamAsync(user);
}
}
private async Task CmdListWithoutParamAsync() {
// Called by CmdList
using var db = DbContext;
var userlist = db.GetGuildZones(Context.Guild.Id);
if (userlist.Count == 0) {
await RespondAsync(":x: Nothing to show. Register your time zones with the bot using the `/set` command.",
ephemeral: true).ConfigureAwait(false);
return;
}
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// Generate time and zone names to be displayed, group with associated user IDs
var sortedlist = new SortedDictionary<string, List<ulong>>();
var ampm = db.GuildSettings.Where(s => s.GuildId == Context.Guild.Id).SingleOrDefault()?.Use12HourTime ?? false;
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foreach ((var area, List<ulong> users) in userlist.OrderByDescending(o => o.Value.Count)) {
var areaprint = TzPrint(area, ampm);
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if (!sortedlist.ContainsKey(areaprint)) sortedlist[areaprint] = [];
sortedlist[areaprint].AddRange(users);
}
const int MaxSingleLineLength = 750;
const int MaxSingleOutputLength = 3000;
// Build zone listings with users
var outputlines = new List<string>();
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foreach ((var area, List<ulong> users) in sortedlist) {
var buffer = new StringBuilder();
buffer.Append(area[6..] + ": ");
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var empty = true;
foreach (var userid in users) {
var userinstance = Context.Guild.GetUser(userid);
if (userinstance == null) continue;
if (empty) empty = !empty;
else buffer.Append(", ");
var useradd = FormatName(userinstance);
if (buffer.Length + useradd.Length > MaxSingleLineLength) {
buffer.Append("others...");
break;
} else buffer.Append(useradd);
}
if (!empty) outputlines.Add(buffer.ToString());
}
// Prepare for output - send buffers out if they become too large
outputlines.Sort();
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var hasOutputOneLine = false;
// First output is shown as an interaction response, followed then as regular channel messages
async Task doOutput(Embed msg) {
if (!hasOutputOneLine) {
await RespondAsync(embed: msg);
hasOutputOneLine = true;
} else {
await ReplyAsync(embed: msg);
}
}
var resultout = new StringBuilder();
foreach (var line in outputlines) {
if (resultout.Length + line.Length > MaxSingleOutputLength) {
await doOutput(new EmbedBuilder().WithDescription(resultout.ToString()).Build());
resultout.Clear();
}
if (resultout.Length > 0) resultout.AppendLine(); // avoids trailing newline by adding to the previous line
resultout.Append(line);
}
if (resultout.Length > 0) {
await doOutput(new EmbedBuilder().WithDescription(resultout.ToString()).Build());
}
}
private async Task CmdListWithUserParamAsync(SocketGuildUser parameter) {
// Called by CmdList
using var db = DbContext;
var result = db.GetUserZone(parameter);
if (result == null) {
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var isself = Context.User.Id == parameter.Id;
if (isself) await RespondAsync(":x: You do not have a time zone. Set it with `tz.set`.", ephemeral: true);
else await RespondAsync(":x: The given user does not have a time zone set.", ephemeral: true);
return;
}
var ampm = db.GuildSettings.Where(s => s.GuildId == Context.Guild.Id).SingleOrDefault()?.Use12HourTime ?? false;
var resulttext = TzPrint(result, ampm)[6..] + ": " + FormatName(parameter);
await RespondAsync(embed: new EmbedBuilder().WithDescription(resulttext).Build());
}
[SlashCommand("set", HelpSet)]
[CommandContextType(InteractionContextType.Guild)]
public async Task CmdSet([Summary(description: "The new time zone to set.")]string zone) {
var parsedzone = ParseTimeZone(zone);
if (parsedzone == null) {
await RespondAsync(ErrInvalidZone, ephemeral: true);
return;
}
using var db = DbContext;
db.UpdateUser((SocketGuildUser)Context.User, parsedzone);
await RespondAsync($":white_check_mark: Your time zone has been set to **{parsedzone}**.",
ephemeral: db.GuildSettings.Where(r => r.GuildId == Context.Guild.Id).SingleOrDefault()?.EphemeralConfirm ?? false)
.ConfigureAwait(false);
}
[SlashCommand("remove", HelpRemove)]
[CommandContextType(InteractionContextType.Guild)]
public async Task CmdRemove() {
using var db = DbContext;
var success = db.DeleteUser((SocketGuildUser)Context.User);
if (success) await RespondAsync(":white_check_mark: Your zone has been removed.",
ephemeral: db.GuildSettings.Where(r => r.GuildId == Context.Guild.Id).SingleOrDefault()?.EphemeralConfirm ?? false)
.ConfigureAwait(false);
else await RespondAsync(":x: You don't have a time zone set.",
ephemeral: db.GuildSettings.Where(r => r.GuildId == Context.Guild.Id).SingleOrDefault()?.EphemeralConfirm ?? false)
.ConfigureAwait(false);
}
}