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Merge pull request #18 from NoiTheCat/dev

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Due to some poor time management, rough memory about what already got done, and all around general busy-ness, some changes within this branch had already been running live for at least a month without making it into the main branch.

From current main to 2.2.0:
* Console timestamps now show local time
* Measures to prevent misconfigurations from messing with slash command registrations
* Small but profound changes to how bot configuration is loaded, particularly with regard to SQL

From 2.2.0 to 2.3.0:
* Reorganize files, introduce "config" top level command group
* Finally(!) add 12-hour formatting (closes #2)
* Use the new Discord permissions model, removing our clumsy custom precondition
This commit is contained in:
Noi 2023-01-21 22:18:29 -08:00 committed by GitHub
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15 changed files with 540 additions and 429 deletions
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2
.vscode/launch.json vendored
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@ -11,7 +11,7 @@
"preLaunchTask": "build",
// If you have changed target frameworks, make sure to update the program path.
"program": "${workspaceFolder}/bin/Debug/net6.0/WorldTime.dll",
"args": [],
"args": [ "-c", "${workspaceFolder}/bin/Debug/net6.0/settings.json" ],
"cwd": "${workspaceFolder}",
// For more information about the 'console' field, see https://aka.ms/VSCode-CS-LaunchJson-Console
"console": "internalConsole",

305
ApplicationCommands.cs
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@ -1,305 +0,0 @@
using Discord.Interactions;
using NodaTime;
using System.Collections.ObjectModel;
using System.Globalization;
using System.Text;
using WorldTime.Data;
namespace WorldTime;
public class ApplicationCommands : InteractionModuleBase<ShardedInteractionContext> {
const string ErrNotAllowed = ":x: Only server moderators may use this command.";
const string EmbedHelpField1 = $"`/help` - {HelpHelp}\n"
+ $"`/list` - {HelpList}\n"
+ $"`/set` - {HelpSet}\n"
+ $"`/remove` - {HelpRemove}";
const string EmbedHelpField2 = $"`/set-for` - {HelpSetFor}\n`/remove-for` - {HelpRemoveFor}";
#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 HelpSetFor = "Sets/updates time zone for a given user.";
const string HelpRemove = "Removes your time zone information from this bot.";
const string HelpRemoveFor = "Removes time zone for a given user.";
#endregion
private const string ErrInvalidZone = ":x: Not a valid zone name."
+ " To find your time zone, refer to: <https://kevinnovak.github.io/Time-Zone-Picker/>.";
private const string ErrNoUserCache = ":warning: Please try the command again.";
private static readonly ReadOnlyDictionary<string, string> _tzNameMap;
public DiscordShardedClient ShardedClient { get; set; } = null!;
public BotDatabaseContext DbContext { get; set; } = null!;
static ApplicationCommands() {
Dictionary<string, string> tzNameMap = new(StringComparer.OrdinalIgnoreCase);
foreach (var name in DateTimeZoneProviders.Tzdb.Ids) tzNameMap.Add(name, name);
_tzNameMap = new(tzNameMap);
}
[SlashCommand("help", HelpHelp)]
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",
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"
}
}.AddField(inline: false, name: "Commands", value: EmbedHelpField1
).AddField(inline: false, name: "Admin commands", value: EmbedHelpField2
).AddField(inline: false, name: "Zones", value:
"This bot accepts zone names from the IANA Time Zone Database (a.k.a. Olson Database). " +
"A useful tool to determine yours can be found at: https://kevinnovak.github.io/Time-Zone-Picker/"
).Build());
}
[RequireGuildContext]
[SlashCommand("list", HelpList)]
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.");
return;
}
// Order times by popularity to limit how many are shown, group by printed name
var sortedlist = new SortedDictionary<string, List<ulong>>();
foreach ((string area, List<ulong> users) in userlist.OrderByDescending(o => o.Value.Count).Take(20)) {
// Filter further to top 20 distinct timezones, even if they are not displayed in the final result
var areaprint = TzPrint(area);
if (!sortedlist.ContainsKey(areaprint)) sortedlist.Add(areaprint, new List<ulong>());
sortedlist[areaprint].AddRange(users);
}
const int MaxSingleLineLength = 750;
const int MaxSingleOutputLength = 900;
// Build zone listings with users
var outputlines = new List<string>();
foreach ((string area, List<ulong> users) in sortedlist) {
var buffer = new StringBuilder();
buffer.Append(area[4..] + ": ");
bool 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();
bool 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) {
bool 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 resulttext = TzPrint(result)[4..] + ": " + FormatName(parameter);
await RespondAsync(embed: new EmbedBuilder().WithDescription(resulttext).Build());
}
[SlashCommand("set", HelpSet)]
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}**.");
}
[RequireGuildContext]
[SlashCommand("set-for", HelpSetFor)]
public async Task CmdSetFor([Summary(description: "The user whose time zone to modify.")] SocketGuildUser user,
[Summary(description: "The new time zone to set.")] string zone) {
if (!IsUserAdmin((SocketGuildUser)Context.User)) {
await RespondAsync(ErrNotAllowed, ephemeral: true).ConfigureAwait(false);
return;
}
// Extract parameters
var newtz = ParseTimeZone(zone);
if (newtz == null) {
await RespondAsync(ErrInvalidZone);
return;
}
using var db = DbContext;
db.UpdateUser(user, newtz);
await RespondAsync($":white_check_mark: Time zone for **{user}** set to **{newtz}**.");
}
[RequireGuildContext]
[SlashCommand("remove", HelpRemove)]
public async Task CmdRemove() {
using var db = DbContext;
var success = db.DeleteUser((SocketGuildUser)Context.User);
if (success) await RespondAsync(":white_check_mark: Your zone has been removed.");
else await RespondAsync(":x: You don't have a time zone set.");
}
[RequireGuildContext]
[SlashCommand("remove-for", HelpRemoveFor)]
public async Task CmdRemoveFor([Summary(description: "The user whose time zone to remove.")] SocketGuildUser user) {
if (!IsUserAdmin((SocketGuildUser)Context.User)) {
await RespondAsync(ErrNotAllowed, ephemeral: true).ConfigureAwait(false);
return;
}
using var db = DbContext;
if (db.DeleteUser(user))
await RespondAsync($":white_check_mark: Removed zone information for {user}.");
else
await RespondAsync($":white_check_mark: No time zone is set for {user}.");
}
#region Helper methods
/// <summary>
/// Returns a string displaying the current time in the given time zone.
/// The result begins with four numbers for sorting purposes. Must be trimmed before output.
/// </summary>
private static string TzPrint(string zone) {
var tzdb = DateTimeZoneProviders.Tzdb;
DateTimeZone tz = tzdb.GetZoneOrNull(zone)!;
if (tz == null) throw new Exception("Encountered unknown time zone: " + zone);
var now = SystemClock.Instance.GetCurrentInstant().InZone(tz);
var sortpfx = now.ToString("MMdd", DateTimeFormatInfo.InvariantInfo);
var fullstr = now.ToString("dd'-'MMM' 'HH':'mm' 'x' (UTC'o<g>')'", DateTimeFormatInfo.InvariantInfo);
return $"{sortpfx}● `{fullstr}`";
}
/// <summary>
/// Checks given time zone input. Returns a valid string for use with NodaTime, or null.
/// </summary>
private static string? ParseTimeZone(string tzinput) {
if (tzinput.Equals("Asia/Calcutta", StringComparison.OrdinalIgnoreCase)) tzinput = "Asia/Kolkata";
if (_tzNameMap.TryGetValue(tzinput, out var name)) return name;
return null;
}
/// <summary>
/// Formats a user's name to a consistent, readable format which makes use of their nickname.
/// </summary>
private static string FormatName(SocketGuildUser user) {
static string escapeFormattingCharacters(string input) {
var result = new StringBuilder();
foreach (var c in input) {
if (c is '\\' or '_' or '~' or '*' or '@') {
result.Append('\\');
}
result.Append(c);
}
return result.ToString();
}
var username = escapeFormattingCharacters(user.Username);
if (user.Nickname != null) {
return $"**{escapeFormattingCharacters(user.Nickname)}** ({username}#{user.Discriminator})";
}
return $"**{username}**#{user.Discriminator}";
}
/// <summary>
/// Checks if the given user can be considered a guild admin ('Manage Server' is set).
/// </summary>
// TODO replace this with a precondition, or there's also a new permission scheme going around?
private static bool IsUserAdmin(SocketGuildUser user)
=> user.GuildPermissions.Administrator || user.GuildPermissions.ManageGuild;
/// <summary>
/// Checks if the member cache for the specified guild needs to be filled, and sends a request if needed.
/// </summary>
/// <remarks>
/// Due to a quirk in Discord.Net, the user cache cannot be filled until the command handler is no longer executing
/// regardless of if the request runs on its own thread, thus requiring the user to run the command again.
/// </remarks>
/// <returns>
/// True if the guild's members are already downloaded. If false, the command handler must notify the user.
/// </returns>
private static async Task<bool> AreUsersDownloadedAsync(SocketGuild guild) {
static bool HasMostMembersDownloaded(SocketGuild guild) {
if (guild.HasAllMembers) return true;
if (guild.MemberCount > 30) {
// For guilds of size over 30, require 85% or more of the members to be known
// (26/30, 42/50, 255/300, etc)
return guild.DownloadedMemberCount >= (int)(guild.MemberCount * 0.85);
} else {
// For smaller guilds, fail if two or more members are missing
return guild.MemberCount - guild.DownloadedMemberCount <= 2;
}
}
if (HasMostMembersDownloaded(guild)) return true;
else {
// Event handler hangs if awaited normally or used with Task.Run
await Task.Factory.StartNew(guild.DownloadUsersAsync).ConfigureAwait(false);
return false;
}
}
#endregion
}

105
Commands/CommandsBase.cs Normal file
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@ -0,0 +1,105 @@
using Discord.Interactions;
using NodaTime;
using System.Collections.ObjectModel;
using System.Globalization;
using System.Text;
using WorldTime.Data;
namespace WorldTime.Commands;
public class CommandsBase : InteractionModuleBase<ShardedInteractionContext> {
protected const string ErrInvalidZone = ":x: Not a valid zone name."
+ " To find your time zone, refer to: <https://kevinnovak.github.io/Time-Zone-Picker/>.";
protected const string ErrNoUserCache = ":warning: Please try the command again.";
protected const string ErrNotAllowed = ":x: Only server moderators may use this command.";
private static readonly ReadOnlyDictionary<string, string> _tzNameMap;
static CommandsBase() {
Dictionary<string, string> tzNameMap = new(StringComparer.OrdinalIgnoreCase);
foreach (var name in DateTimeZoneProviders.Tzdb.Ids) tzNameMap.Add(name, name);
_tzNameMap = new(tzNameMap);
}
public DiscordShardedClient ShardedClient { get; set; } = null!;
public BotDatabaseContext DbContext { get; set; } = null!;
/// <summary>
/// Returns a string displaying the current time in the given time zone.
/// The result begins with six numbers for sorting purposes. Must be trimmed before output.
/// </summary>
protected static string TzPrint(string zone, bool use12hr) {
var tzdb = DateTimeZoneProviders.Tzdb;
DateTimeZone tz = tzdb.GetZoneOrNull(zone)!;
if (tz == null) throw new Exception("Encountered unknown time zone: " + zone);
var now = SystemClock.Instance.GetCurrentInstant().InZone(tz);
var sortpfx = now.ToString("MMddHH", DateTimeFormatInfo.InvariantInfo);
string fullstr;
if (use12hr) {
var ap = now.ToString("tt", DateTimeFormatInfo.InvariantInfo).ToLowerInvariant();
fullstr = now.ToString($"MMM' 'dd', 'hh':'mm'{ap} 'x' (UTC'o<g>')'", DateTimeFormatInfo.InvariantInfo);
} else fullstr = now.ToString("dd'-'MMM', 'HH':'mm' 'x' (UTC'o<g>')'", DateTimeFormatInfo.InvariantInfo);
return $"{sortpfx}● `{fullstr}`";
}
/// <summary>
/// Checks given time zone input. Returns a valid string for use with NodaTime, or null.
/// </summary>
protected static string? ParseTimeZone(string tzinput) {
if (tzinput.Equals("Asia/Calcutta", StringComparison.OrdinalIgnoreCase)) tzinput = "Asia/Kolkata";
if (_tzNameMap.TryGetValue(tzinput, out var name)) return name;
return null;
}
/// <summary>
/// Formats a user's name to a consistent, readable format which makes use of their nickname.
/// </summary>
protected static string FormatName(SocketGuildUser user) {
static string escapeFormattingCharacters(string input) {
var result = new StringBuilder();
foreach (var c in input) {
if (c is '\\' or '_' or '~' or '*' or '@') {
result.Append('\\');
}
result.Append(c);
}
return result.ToString();
}
var username = escapeFormattingCharacters(user.Username);
if (user.Nickname != null) {
return $"**{escapeFormattingCharacters(user.Nickname)}** ({username}#{user.Discriminator})";
}
return $"**{username}**#{user.Discriminator}";
}
/// <summary>
/// Checks if the member cache for the specified guild needs to be filled, and sends a request if needed.
/// </summary>
/// <remarks>
/// Due to a quirk in Discord.Net, the user cache cannot be filled until the command handler is no longer executing
/// regardless of if the request runs on its own thread, thus requiring the user to run the command again.
/// </remarks>
/// <returns>
/// True if the guild's members are already downloaded. If false, the command handler must notify the user.
/// </returns>
protected static async Task<bool> AreUsersDownloadedAsync(SocketGuild guild) {
static bool HasMostMembersDownloaded(SocketGuild guild) {
if (guild.HasAllMembers) return true;
if (guild.MemberCount > 30) {
// For guilds of size over 30, require 85% or more of the members to be known
// (26/30, 42/50, 255/300, etc)
return guild.DownloadedMemberCount >= (int)(guild.MemberCount * 0.85);
} else {
// For smaller guilds, fail if two or more members are missing
return guild.MemberCount - guild.DownloadedMemberCount <= 2;
}
}
if (HasMostMembersDownloaded(guild)) return true;
else {
// Event handler hangs if awaited normally or used with Task.Run
await Task.Factory.StartNew(guild.DownloadUsersAsync).ConfigureAwait(false);
return false;
}
}
}

49
Commands/ConfigCommands.cs Normal file
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using Discord.Interactions;
namespace WorldTime.Commands;
[Group("config", "Configuration commands for World Time.")]
[DefaultMemberPermissions(GuildPermission.ManageGuild)]
[EnabledInDm(false)]
public class ConfigCommands : CommandsBase {
internal const string HelpUse12 = "Sets whether to use the 12-hour (AM/PM) format in time zone listings.";
internal const string HelpSetFor = "Sets/updates time zone for a given user.";
internal const string HelpRemoveFor = "Removes time zone for a given user.";
[SlashCommand("use-12hour", HelpUse12)]
public async Task Cmd12Hour([Summary(description: "True to enable, False to disable.")] bool setting) {
using var db = DbContext;
var gs = db.GuildSettings.Where(r => r.GuildId == Context.Guild.Id).SingleOrDefault();
if (gs == null) {
gs = new() { GuildId = Context.Guild.Id };
db.Add(gs);
}
gs.Use12HourTime = setting;
await db.SaveChangesAsync();
await RespondAsync($":white_check_mark: Time listing set to **{(setting ? "AM/PM" : "24 hour")}** format.");
}
[SlashCommand("set-for", HelpSetFor)]
public async Task CmdSetFor([Summary(description: "The user whose time zone to modify.")] SocketGuildUser user,
[Summary(description: "The new time zone to set.")] string zone) {
// Extract parameters
var newtz = ParseTimeZone(zone);
if (newtz == null) {
await RespondAsync(ErrInvalidZone);
return;
}
using var db = DbContext;
db.UpdateUser(user, newtz);
await RespondAsync($":white_check_mark: Time zone for **{user}** set to **{newtz}**.");
}
[SlashCommand("remove-for", HelpRemoveFor)]
public async Task CmdRemoveFor([Summary(description: "The user whose time zone to remove.")] SocketGuildUser user) {
using var db = DbContext;
if (db.DeleteUser(user))
await RespondAsync($":white_check_mark: Removed zone information for {user}.");
else
await RespondAsync($":white_check_mark: No time zone is set for {user}.");
}
}

171
Commands/UserCommands.cs Normal file
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using Discord.Interactions;
using System.Text;
namespace WorldTime.Commands;
public class UserCommands : CommandsBase {
const string EmbedHelpField1 =
$"`/help` - {HelpHelp}\n"
+ $"`/list` - {HelpList}\n"
+ $"`/set` - {HelpSet}\n"
+ $"`/remove` - {HelpRemove}";
const string EmbedHelpField2 =
$"`/config use-12hour` - {ConfigCommands.HelpUse12}\n"
+ $"`/set-for` - {ConfigCommands.HelpSetFor}\n"
+ $"`/remove-for` - {ConfigCommands.HelpRemoveFor}";
#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)]
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",
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"
}
}.AddField(inline: false, name: "Commands", value: EmbedHelpField1
).AddField(inline: false, name: "Admin commands", value: EmbedHelpField2
).AddField(inline: false, name: "Zones", value:
"This bot accepts zone names from the IANA Time Zone Database (a.k.a. Olson Database). " +
"A useful tool to determine yours can be found at: https://kevinnovak.github.io/Time-Zone-Picker/"
).Build());
}
[SlashCommand("list", HelpList)]
[EnabledInDm(false)]
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.");
return;
}
// Order times by popularity to limit how many are shown, group by printed name
var sortedlist = new SortedDictionary<string, List<ulong>>();
var ampm = db.GuildSettings.Where(s => s.GuildId == Context.Guild.Id).SingleOrDefault()?.Use12HourTime ?? false;
foreach ((string area, List<ulong> users) in userlist.OrderByDescending(o => o.Value.Count).Take(20)) {
// Filter further to top 20 distinct timezones, even if they are not displayed in the final result
var areaprint = TzPrint(area, ampm);
if (!sortedlist.ContainsKey(areaprint)) sortedlist.Add(areaprint, new List<ulong>());
sortedlist[areaprint].AddRange(users);
}
const int MaxSingleLineLength = 750;
const int MaxSingleOutputLength = 3000;
// Build zone listings with users
var outputlines = new List<string>();
foreach ((string area, List<ulong> users) in sortedlist) {
var buffer = new StringBuilder();
buffer.Append(area[6..] + ": ");
bool 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();
bool 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) {
bool 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)]
[EnabledInDm(false)]
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}**.");
}
[SlashCommand("remove", HelpRemove)]
[EnabledInDm(false)]
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.");
else await RespondAsync(":x: You don't have a time zone set.");
}
}

87
Configuration.cs
View file

@ -1,56 +1,52 @@
using CommandLine;
using CommandLine.Text;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using Npgsql;
using System.Diagnostics.CodeAnalysis;
using System.Reflection;
namespace WorldTime;
/// <summary>
/// Loads and holds configuration values.
/// </summary>
class Configuration {
const string KeySqlHost = "SqlHost";
const string KeySqlUsername = "SqlUsername";
const string KeySqlPassword = "SqlPassword";
const string KeySqlDatabase = "SqlDatabase";
public string DbConnectionString { get; }
public string BotToken { get; }
public string? DBotsToken { get; }
public int ShardTotal { get; }
public Configuration(string[] args) {
var cmdline = CmdLineOpts.Parse(args);
public string? SqlHost { get; }
public string? SqlDatabase { get; }
public string SqlUsername { get; }
public string SqlPassword { get; }
public Configuration() {
var args = CommandLineParameters.Parse(Environment.GetCommandLineArgs());
var path = args?.ConfigFile ?? Path.GetDirectoryName(Assembly.GetEntryAssembly()!.Location)
+ Path.DirectorySeparatorChar + "." + Path.DirectorySeparatorChar + "settings.json";
// Looks for configuration file
var confPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location) + Path.DirectorySeparatorChar;
confPath += cmdline.Config!;
if (!File.Exists(confPath)) throw new Exception("Settings file not found in path: " + confPath);
JObject jc;
try {
var conftxt = File.ReadAllText(path);
jc = JObject.Parse(conftxt);
} catch (Exception ex) {
string pfx;
if (ex is JsonException) pfx = "Unable to parse configuration: ";
else pfx = "Unable to access configuration: ";
var jc = JObject.Parse(File.ReadAllText(confPath));
throw new Exception(pfx + ex.Message, ex);
}
BotToken = ReadConfKey<string>(jc, nameof(BotToken), true);
DBotsToken = ReadConfKey<string>(jc, nameof(DBotsToken), false);
ShardTotal = cmdline.ShardTotal ?? ReadConfKey<int?>(jc, nameof(ShardTotal), false) ?? 1;
ShardTotal = args.ShardTotal ?? ReadConfKey<int?>(jc, nameof(ShardTotal), false) ?? 1;
if (ShardTotal < 1) throw new Exception($"'{nameof(ShardTotal)}' must be a positive integer.");
var sqlhost = ReadConfKey<string>(jc, KeySqlHost, false) ?? "localhost"; // Default to localhost
var sqluser = ReadConfKey<string>(jc, KeySqlUsername, false);
var sqlpass = ReadConfKey<string>(jc, KeySqlPassword, false);
if (string.IsNullOrWhiteSpace(sqluser) || string.IsNullOrWhiteSpace(sqlpass))
throw new Exception("'SqlUsername', 'SqlPassword' must be specified.");
var csb = new NpgsqlConnectionStringBuilder() {
Host = sqlhost,
Username = sqluser,
Password = sqlpass
};
var sqldb = ReadConfKey<string>(jc, KeySqlDatabase, false);
if (sqldb != null) csb.Database = sqldb; // Optional database setting
DbConnectionString = csb.ToString();
SqlHost = ReadConfKey<string>(jc, nameof(SqlHost), false);
SqlDatabase = ReadConfKey<string?>(jc, nameof(SqlDatabase), false);
SqlUsername = ReadConfKey<string>(jc, nameof(SqlUsername), true);
SqlPassword = ReadConfKey<string>(jc, nameof(SqlPassword), true);
}
private static T? ReadConfKey<T>(JObject jc, string key, [DoesNotReturnIf(true)] bool failOnEmpty) {
@ -59,29 +55,24 @@ class Configuration {
return default;
}
private class CmdLineOpts {
[Option('c', "config", Default = "settings.json",
HelpText = "Custom path to instance configuration, relative from executable directory.")]
public string? Config { get; set; }
class CommandLineParameters {
[Option('c', "config")]
public string? ConfigFile { get; set; }
[Option("shardtotal",
HelpText = "Total number of shards online. MUST be the same for all instances.\n"
+ "This value overrides the config file value.")]
[Option("shardtotal")]
public int? ShardTotal { get; set; }
public static CmdLineOpts Parse(string[] args) {
// Do not automatically print help message
var clp = new Parser(c => c.HelpWriter = null);
public static CommandLineParameters? Parse(string[] args) {
CommandLineParameters? result = null;
CmdLineOpts? result = null;
var r = clp.ParseArguments<CmdLineOpts>(args);
r.WithParsed(parsed => result = parsed);
r.WithNotParsed(err => {
var ht = HelpText.AutoBuild(r);
Console.WriteLine(ht.ToString());
Environment.Exit((int)Program.ExitCodes.BadCommand);
});
return result!;
new Parser(settings => {
settings.IgnoreUnknownArguments = true;
settings.AutoHelp = false;
settings.AutoVersion = false;
}).ParseArguments<CommandLineParameters>(args)
.WithParsed(p => result = p)
.WithNotParsed(e => { /* ignore */ });
return result;
}
}
}

35
Data/BotDatabaseContext.cs
View file

@ -1,35 +1,32 @@
using Microsoft.EntityFrameworkCore;
using Npgsql;
namespace WorldTime.Data;
public class BotDatabaseContext : DbContext {
private static string? _npgsqlConnectionString;
internal static string NpgsqlConnectionString {
#if DEBUG
get {
if (_npgsqlConnectionString != null) return _npgsqlConnectionString;
Program.Log(nameof(BotDatabaseContext), "Using hardcoded connection string!");
return _npgsqlConnectionString ?? "Host=localhost;Username=worldtime;Password=wt";
}
#else
get => _npgsqlConnectionString!;
#endif
set => _npgsqlConnectionString ??= value;
private static readonly string _connectionString;
static BotDatabaseContext() {
// Get our own config loaded just for the SQL stuff
var conf = new Configuration();
_connectionString = new NpgsqlConnectionStringBuilder() {
Host = conf.SqlHost ?? "localhost", // default to localhost
Database = conf.SqlDatabase,
Username = conf.SqlUsername,
Password = conf.SqlPassword
}.ToString();
}
public DbSet<UserEntry> UserEntries { get; set; } = null!;
public DbSet<GuildConfiguration> GuildSettings { get; set; } = null!;
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
=> optionsBuilder
.UseNpgsql(NpgsqlConnectionString)
#if DEBUG
.LogTo((string line) => Program.Log("EF", line), Microsoft.Extensions.Logging.LogLevel.Information)
#endif
.UseNpgsql(_connectionString)
.UseSnakeCaseNamingConvention();
protected override void OnModelCreating(ModelBuilder modelBuilder) {
modelBuilder.Entity<UserEntry>(entity => {
entity.HasKey(e => new { e.GuildId, e.UserId }).HasName("userdata_pkey");
});
modelBuilder.Entity<UserEntry>().HasKey(e => new { e.GuildId, e.UserId }).HasName("userdata_pkey");
modelBuilder.Entity<GuildConfiguration>().Property(p => p.Use12HourTime).HasDefaultValue(false);
}
#region Helper methods / abstractions

9
Data/GuildConfiguration.cs Normal file
View file

@ -0,0 +1,9 @@
using System.ComponentModel.DataAnnotations;
namespace WorldTime.Data;
public class GuildConfiguration {
[Key]
public ulong GuildId { get; set; }
public bool Use12HourTime { get; set; }
}

69
Data/Migrations/20230115041447_Add12HrSetting.Designer.cs generated Normal file
View file

@ -0,0 +1,69 @@
// <auto-generated />
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Infrastructure;
using Microsoft.EntityFrameworkCore.Migrations;
using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
using WorldTime.Data;
#nullable disable
namespace WorldTime.Data.Migrations
{
[DbContext(typeof(BotDatabaseContext))]
[Migration("20230115041447_Add12HrSetting")]
partial class Add12HrSetting
{
/// <inheritdoc />
protected override void BuildTargetModel(ModelBuilder modelBuilder)
{
#pragma warning disable 612, 618
modelBuilder
.HasAnnotation("ProductVersion", "7.0.1")
.HasAnnotation("Relational:MaxIdentifierLength", 63);
NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
modelBuilder.Entity("WorldTime.Data.GuildConfiguration", b =>
{
b.Property<decimal>("GuildId")
.ValueGeneratedOnAdd()
.HasColumnType("numeric(20,0)")
.HasColumnName("guild_id");
b.Property<bool>("Use12HourTime")
.ValueGeneratedOnAdd()
.HasColumnType("boolean")
.HasDefaultValue(false)
.HasColumnName("use12hour_time");
b.HasKey("GuildId")
.HasName("pk_guild_settings");
b.ToTable("guild_settings", (string)null);
});
modelBuilder.Entity("WorldTime.Data.UserEntry", b =>
{
b.Property<long>("GuildId")
.HasColumnType("bigint")
.HasColumnName("guild_id");
b.Property<long>("UserId")
.HasColumnType("bigint")
.HasColumnName("user_id");
b.Property<string>("TimeZone")
.IsRequired()
.HasColumnType("text")
.HasColumnName("zone");
b.HasKey("GuildId", "UserId")
.HasName("userdata_pkey");
b.ToTable("userdata", (string)null);
});
#pragma warning restore 612, 618
}
}
}

33
Data/Migrations/20230115041447_Add12HrSetting.cs Normal file
View file

@ -0,0 +1,33 @@
using Microsoft.EntityFrameworkCore.Migrations;
#nullable disable
namespace WorldTime.Data.Migrations
{
/// <inheritdoc />
public partial class Add12HrSetting : Migration
{
/// <inheritdoc />
protected override void Up(MigrationBuilder migrationBuilder)
{
migrationBuilder.CreateTable(
name: "guild_settings",
columns: table => new
{
guildid = table.Column<decimal>(name: "guild_id", type: "numeric(20,0)", nullable: false),
use12hourtime = table.Column<bool>(name: "use12hour_time", type: "boolean", nullable: false, defaultValue: false)
},
constraints: table =>
{
table.PrimaryKey("pk_guild_settings", x => x.guildid);
});
}
/// <inheritdoc />
protected override void Down(MigrationBuilder migrationBuilder)
{
migrationBuilder.DropTable(
name: "guild_settings");
}
}
}

21
Data/Migrations/BotDatabaseContextModelSnapshot.cs
View file

@ -16,11 +16,30 @@ namespace WorldTime.Data.Migrations
{
#pragma warning disable 612, 618
modelBuilder
.HasAnnotation("ProductVersion", "6.0.6")
.HasAnnotation("ProductVersion", "7.0.1")
.HasAnnotation("Relational:MaxIdentifierLength", 63);
NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
modelBuilder.Entity("WorldTime.Data.GuildConfiguration", b =>
{
b.Property<decimal>("GuildId")
.ValueGeneratedOnAdd()
.HasColumnType("numeric(20,0)")
.HasColumnName("guild_id");
b.Property<bool>("Use12HourTime")
.ValueGeneratedOnAdd()
.HasColumnType("boolean")
.HasDefaultValue(false)
.HasColumnName("use12hour_time");
b.HasKey("GuildId")
.HasName("pk_guild_settings");
b.ToTable("guild_settings", (string)null);
});
modelBuilder.Entity("WorldTime.Data.UserEntry", b =>
{
b.Property<long>("GuildId")

10
Program.cs
View file

@ -9,17 +9,15 @@ class Program {
/// </summary>
public static string BotUptime => (DateTimeOffset.UtcNow - _botStartTime).ToString("d' days, 'hh':'mm':'ss");
static async Task Main(string[] args) {
static async Task Main() {
Configuration? cfg = null;
try {
cfg = new Configuration(args);
cfg = new Configuration();
} catch (Exception ex) {
Console.WriteLine(ex);
Environment.Exit((int)ExitCodes.ConfigError);
}
Data.BotDatabaseContext.NpgsqlConnectionString = cfg.DbConnectionString;
Console.CancelKeyPress += OnCancelKeyPressed;
_bot = new WorldTime(cfg);
await _bot.StartAsync().ConfigureAwait(false);
@ -31,10 +29,10 @@ class Program {
/// Sends a formatted message to console.
/// </summary>
public static void Log(string source, string message) {
var ts = DateTime.UtcNow;
var ts = DateTime.Now;
var ls = new string[] { "\r\n", "\n" };
foreach (var item in message.Split(ls, StringSplitOptions.None))
Console.WriteLine($"{ts:u} [{source}] {item}");
Console.WriteLine($"{ts:s} [{source}] {item}");
}
private static void OnCancelKeyPressed(object? sender, ConsoleCancelEventArgs e) {

15
RequireGuildContextAttribute.cs
View file

@ -1,15 +0,0 @@
using Discord.Interactions;
namespace WorldTime;
/// <summary>
/// Implements the included precondition from Discord.Net, requiring a guild context while using our custom error message.<br/><br/>
/// Combining this with <see cref="RequireBotModeratorAttribute"/> is redundant. If possible, only use the latter instead.
/// </summary>
class RequireGuildContextAttribute : RequireContextAttribute {
public const string Error = "Command not received within a guild context.";
public const string Reply = ":x: This command is only available within a server.";
public override string ErrorMessage => Error;
public RequireGuildContextAttribute() : base(ContextType.Guild) { }
}

20
WorldTime.cs
View file

@ -7,7 +7,6 @@ using System.Text;
using WorldTime.Data;
namespace WorldTime;
/// <summary>
/// Main class for the program. Configures the client on start and occasionally prints status information.
/// </summary>
@ -125,10 +124,7 @@ internal class WorldTime : IDisposable {
private Task DiscordClient_Log(LogMessage arg) {
// Suppress certain messages
if (arg.Message != null) {
// These warnings appear often as of Discord.Net v3...
if (arg.Message.StartsWith("Unknown Dispatch ") || arg.Message.StartsWith("Unknown Channel")) return Task.CompletedTask;
switch (arg.Message) // Connection status messages replaced by ShardManager's output
{
switch (arg.Message) { // Connection status messages replaced by ShardManager's output
case "Connecting":
case "Connected":
case "Ready":
@ -139,7 +135,6 @@ internal class WorldTime : IDisposable {
case "Discord.WebSocket.GatewayReconnectException: Server requested a reconnect":
return Task.CompletedTask;
}
Program.Log("Discord.Net", $"{arg.Severity}: {arg.Message}");
}
@ -161,11 +156,15 @@ internal class WorldTime : IDisposable {
}
#else
// Debug: Register our commands locally instead, in each guild we're in
if (arg.Guilds.Count > 5) {
Program.Log("Command registration", "Are you debugging in production?! Skipping DEBUG command registration.");
} else {
var iasrv = _services.GetRequiredService<InteractionService>();
foreach (var g in arg.Guilds) {
await iasrv.RegisterCommandsToGuildAsync(g.Id, true).ConfigureAwait(false);
Program.Log("Command registration", $"Updated DEBUG command registration in guild {g.Id}.");
}
}
#endif
}
@ -200,21 +199,12 @@ internal class WorldTime : IDisposable {
// Additional log information with error detail
logresult += " " + Enum.GetName(typeof(InteractionCommandError), result.Error) + ": " + result.ErrorReason;
// Specific responses to errors, if necessary
if (result.Error == InteractionCommandError.UnmetPrecondition) {
string errReply = result.ErrorReason switch {
RequireGuildContextAttribute.Error => RequireGuildContextAttribute.Reply,
_ => result.ErrorReason
};
await context.Interaction.RespondAsync(errReply, ephemeral: true);
} else {
// Generic error response
// TODO when implementing proper application error logging, see here
var ia = context.Interaction;
if (ia.HasResponded) await ia.ModifyOriginalResponseAsync(p => p.Content = InternalError);
else await ia.RespondAsync(InternalError);
}
}
Program.Log("Command", logresult);
}

20
WorldTime.csproj
View file

@ -5,24 +5,24 @@
<TargetFramework>net6.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<Version>2.1.5</Version>
<Version>2.3.0</Version>
<Authors>NoiTheCat</Authors>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="CommandLineParser" Version="2.9.1" />
<PackageReference Include="Discord.Net" Version="3.8.0" />
<PackageReference Include="EFCore.NamingConventions" Version="6.0.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="6.0.8" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="6.0.8">
<PackageReference Include="Discord.Net" Version="3.9.0" />
<PackageReference Include="EFCore.NamingConventions" Version="7.0.2" />
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.2" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.2">
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
<PrivateAssets>all</PrivateAssets>
</PackageReference>
<PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="6.0.0" />
<PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
<PackageReference Include="NodaTime" Version="3.1.2" />
<PackageReference Include="Npgsql" Version="6.0.6" />
<PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="6.0.6" />
<PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="7.0.0" />
<PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
<PackageReference Include="NodaTime" Version="3.1.6" />
<PackageReference Include="Npgsql" Version="7.0.1" />
<PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="7.0.1" />
<PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL.Design" Version="1.1.0" />
</ItemGroup>