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Merge pull request #11 from NoiTheCat/efcore

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Switch to Entity Framework Core
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Noi 2022-06-29 21:53:40 -07:00 committed by GitHub
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13 changed files with 414 additions and 190 deletions
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41
ApplicationCommands.cs
View file

@ -3,9 +3,9 @@ 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.";
@ -30,7 +30,7 @@ public class ApplicationCommands : InteractionModuleBase<ShardedInteractionConte
private static readonly ReadOnlyDictionary<string, string> _tzNameMap;
public DiscordShardedClient ShardedClient { get; set; } = null!;
public Database Database { get; set; } = null!;
public BotDatabaseContext DbContext { get; set; } = null!;
static ApplicationCommands() {
Dictionary<string, string> tzNameMap = new(StringComparer.OrdinalIgnoreCase);
@ -42,7 +42,8 @@ public class ApplicationCommands : InteractionModuleBase<ShardedInteractionConte
public async Task CmdHelp() {
var version = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version!.ToString(3);
var guildct = ShardedClient.Guilds.Count;
var uniquetz = await Database.GetDistinctZoneCountAsync();
using var db = DbContext;
var uniquetz = db.GetDistinctZoneCount();
await RespondAsync(embed: new EmbedBuilder() {
Title = "Help & About",
Description = $"World Time v{version} - Serving {guildct} communities across {uniquetz} time zones.\n\n"
@ -69,12 +70,19 @@ public class ApplicationCommands : InteractionModuleBase<ShardedInteractionConte
return;
}
if (user != null) {
await CmdListUserAsync(user);
return;
if (user == null) {
// No parameter - full listing
await CmdListWithoutParamAsync();
} else {
// Has parameter - do single user listing
await CmdListWithUserParamAsync(user);
}
}
var userlist = await Database.GetGuildZonesAsync(Context.Guild.Id);
private async Task CmdListWithoutParamAsync() {
// Called by CmdList
using var db = DbContext;
var userlist = db.GetGuildZones(Context.Guild.Id);
if (userlist.Count == 0) {
await RespondAsync(":x: Nothing to show. Register your time zones with the bot using the `/set` command.");
return;
@ -138,9 +146,10 @@ public class ApplicationCommands : InteractionModuleBase<ShardedInteractionConte
}
}
private async Task CmdListUserAsync(SocketGuildUser parameter) {
// Not meant as a command handler - called by CmdList
var result = await Database.GetUserZoneAsync(parameter);
private async Task CmdListWithUserParamAsync(SocketGuildUser parameter) {
// Called by CmdList
using var db = DbContext;
var result = db.GetUserZone(parameter);
if (result == null) {
bool isself = Context.User.Id == parameter.Id;
if (isself) await RespondAsync(":x: You do not have a time zone. Set it with `tz.set`.", ephemeral: true);
@ -159,7 +168,8 @@ public class ApplicationCommands : InteractionModuleBase<ShardedInteractionConte
await RespondAsync(ErrInvalidZone, ephemeral: true);
return;
}
await Database.UpdateUserAsync((SocketGuildUser)Context.User, parsedzone);
using var db = DbContext;
db.UpdateUser((SocketGuildUser)Context.User, parsedzone);
await RespondAsync($":white_check_mark: Your time zone has been set to **{parsedzone}**.");
}
@ -179,14 +189,16 @@ public class ApplicationCommands : InteractionModuleBase<ShardedInteractionConte
return;
}
await Database.UpdateUserAsync(user, newtz).ConfigureAwait(false);
using var db = DbContext;
db.UpdateUser(user, newtz);
await RespondAsync($":white_check_mark: Time zone for **{user}** set to **{newtz}**.");
}
[RequireGuildContext]
[SlashCommand("remove", HelpRemove)]
public async Task CmdRemove() {
var success = await Database.DeleteUserAsync((SocketGuildUser)Context.User);
using var db = DbContext;
var success = db.DeleteUser((SocketGuildUser)Context.User);
if (success) await RespondAsync(":white_check_mark: Your zone has been removed.");
else await RespondAsync(":x: You don't have a time zone set.");
}
@ -199,7 +211,8 @@ public class ApplicationCommands : InteractionModuleBase<ShardedInteractionConte
return;
}
if (await Database.DeleteUserAsync(user))
using var db = DbContext;
if (db.DeleteUser(user))
await RespondAsync($":white_check_mark: Removed zone information for {user}.");
else
await RespondAsync($":white_check_mark: No time zone is set for {user}.");

38
CommandsText.cs
View file

@ -1,11 +1,13 @@
using NodaTime;
using Microsoft.Extensions.DependencyInjection;
using NodaTime;
using System.Collections.ObjectModel;
using System.Globalization;
using System.Text;
using System.Text.RegularExpressions;
using WorldTime.Data;
namespace WorldTime;
[Obsolete("Text commands are deprecated and will be removed soon.")]
internal class CommandsText {
#if DEBUG
public const string CommandPrefix = "tt.";
@ -15,9 +17,11 @@ internal class CommandsText {
delegate Task Command(SocketTextChannel channel, SocketGuildUser sender, SocketMessage message);
private readonly Dictionary<string, Command> _commands;
private readonly Database _database;
private readonly IServiceProvider _services;
private readonly WorldTime _instance;
private BotDatabaseContext Database => _services.GetRequiredService<BotDatabaseContext>();
private static readonly Regex _userExplicit;
private static readonly Regex _userMention;
private static readonly ReadOnlyDictionary<string, string> _tzNameMap;
@ -38,9 +42,9 @@ internal class CommandsText {
_tzNameMap = new(tzNameMap);
}
public CommandsText(WorldTime inst, Database db) {
public CommandsText(WorldTime inst, IServiceProvider services) {
_instance = inst;
_database = db;
_services = services;
_commands = new(StringComparer.OrdinalIgnoreCase) {
{ "help", CmdHelp },
{ "list", CmdList },
@ -60,7 +64,7 @@ internal class CommandsText {
var msgsplit = message.Content.Split(' ', 2, StringSplitOptions.RemoveEmptyEntries);
if (msgsplit.Length == 0 || msgsplit[0].Length < 4) return;
if (msgsplit[0].StartsWith(CommandPrefix, StringComparison.OrdinalIgnoreCase)) { // TODO add support for multiple prefixes?
if (msgsplit[0].StartsWith(CommandPrefix, StringComparison.OrdinalIgnoreCase)) {
var cmdBase = msgsplit[0][3..];
if (_commands.ContainsKey(cmdBase)) {
Program.Log("Command invoked", $"{channel.Guild.Name}/{message.Author} {message.Content}");
@ -74,9 +78,10 @@ internal class CommandsText {
}
private async Task CmdHelp(SocketTextChannel channel, SocketGuildUser sender, SocketMessage message) {
using var db = Database;
var version = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version!.ToString(3);
var guildct = _instance.DiscordClient.Guilds.Count;
var uniquetz = await _database.GetDistinctZoneCountAsync();
var uniquetz = db.GetDistinctZoneCount();
await channel.SendMessageAsync(embed: new EmbedBuilder() {
Color = new Color(0xe0f2f7),
Title = "Help & About",
@ -118,7 +123,8 @@ internal class CommandsText {
return;
}
var result = await _database.GetUserZoneAsync(usersearch).ConfigureAwait(false);
using var db = Database;
var result = db.GetUserZone(usersearch);
if (result == null) {
bool isself = sender.Id == usersearch.Id;
if (isself) await channel.SendMessageAsync(":x: You do not have a time zone. Set it with `tz.set`.").ConfigureAwait(false);
@ -130,7 +136,8 @@ internal class CommandsText {
await channel.SendMessageAsync(embed: new EmbedBuilder().WithDescription(resulttext).Build()).ConfigureAwait(false);
} else {
// Does not have parameter - build full list
var userlist = await _database.GetGuildZonesAsync(channel.Guild.Id).ConfigureAwait(false);
using var db = Database;
var userlist = db.GetGuildZones(channel.Guild.Id);
if (userlist.Count == 0) {
await channel.SendMessageAsync(":x: Nothing to show. " +
$"To register time zones with the bot, use the `{CommandPrefix}set` command.").ConfigureAwait(false);
@ -196,7 +203,8 @@ internal class CommandsText {
await channel.SendMessageAsync(ErrInvalidZone).ConfigureAwait(false);
return;
}
await _database.UpdateUserAsync(sender, input).ConfigureAwait(false);
using var db = Database;
db.UpdateUser(sender, input);
await channel.SendMessageAsync($":white_check_mark: Your time zone has been set to **{input}**.").ConfigureAwait(false);
}
@ -229,12 +237,14 @@ internal class CommandsText {
return;
}
await _database.UpdateUserAsync(targetuser, newtz).ConfigureAwait(false);
using var db = Database;
db.UpdateUser(targetuser, newtz);
await channel.SendMessageAsync($":white_check_mark: Time zone for **{targetuser}** set to **{newtz}**.").ConfigureAwait(false);
}
private async Task CmdRemove(SocketTextChannel channel, SocketGuildUser sender, SocketMessage message) {
var success = await _database.DeleteUserAsync(sender).ConfigureAwait(false);
using var db = Database;
var success = db.DeleteUser(sender);
if (success) await channel.SendMessageAsync(":white_check_mark: Your zone has been removed.").ConfigureAwait(false);
else await channel.SendMessageAsync(":x: You don't have a time zone set.");
}
@ -259,7 +269,8 @@ internal class CommandsText {
return;
}
await _database.DeleteUserAsync(targetuser).ConfigureAwait(false);
using var db = Database;
db.DeleteUser(targetuser);
await channel.SendMessageAsync($":white_check_mark: Removed zone information for {targetuser}.");
}
@ -346,7 +357,6 @@ internal class CommandsText {
/// </summary>
private static bool IsUserAdmin(SocketGuildUser user)
=> user.GuildPermissions.Administrator || user.GuildPermissions.ManageGuild;
// TODO port modrole feature from BB, implement in here
/// <summary>
/// Checks if the member cache for the specified guild needs to be filled, and sends a request if needed.

114
Data/BotDatabaseContext.cs Normal file
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@ -0,0 +1,114 @@
using Microsoft.EntityFrameworkCore;
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;
}
public DbSet<UserEntry> UserEntries { 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
.UseSnakeCaseNamingConvention();
protected override void OnModelCreating(ModelBuilder modelBuilder) {
modelBuilder.Entity<UserEntry>(entity => {
entity.HasKey(e => new { e.GuildId, e.UserId }).HasName("userdata_pkey");
});
}
#region Helper methods / abstractions
/// <summary>
/// Checks if a given guild contains at least one user data entry with recent enough activity.
/// <br />To be used within a <see langword="using"/> context.
/// </summary>
internal bool HasAnyUsers(SocketGuild guild) => UserEntries.Where(u => u.GuildId == (long)guild.Id).Any();
/// <summary>
/// Gets the number of unique time zones in the database.
/// <br />To be used within a <see langword="using"/> context.
/// </summary>
internal int GetDistinctZoneCount() => UserEntries.Select(u => u.TimeZone).Distinct().Count();
/// <summary>
/// Removes the specified user from the database.
/// <br />To be used within a <see langword="using"/> context.
/// </summary>
/// <returns>
/// <see langword="true"/> if the removal was successful.
/// <see langword="false"/> if the user did not exist.
/// </returns>
internal bool DeleteUser(SocketGuildUser user) {
var tuser = UserEntries.Where(u => u.UserId == (long)user.Id && u.GuildId == (long)user.Guild.Id).SingleOrDefault();
if (tuser != null) {
Remove(tuser);
SaveChanges();
return true;
} else {
return false;
}
}
/// <summary>
/// Inserts/updates the specified user in the database.
/// <br />To be used within a <see langword="using"/> context.
/// </summary>
internal void UpdateUser(SocketGuildUser user, string timezone) {
var tuser = UserEntries.Where(u => u.UserId == (long)user.Id && u.GuildId == (long)user.Guild.Id).SingleOrDefault();
if (tuser != null) {
Update(tuser);
} else {
tuser = new UserEntry() { UserId = (long)user.Id, GuildId = (long)user.Guild.Id };
Add(tuser);
}
tuser.TimeZone = timezone;
SaveChanges();
}
/// <summary>
/// Retrieves the time zone name of a single user.
/// <br />To be used within a <see langword="using"/> context.
/// </summary>
internal string? GetUserZone(SocketGuildUser user) {
var tuser = UserEntries.Where(u => u.UserId == (long)user.Id && u.GuildId == (long)user.Guild.Id).SingleOrDefault();
return tuser?.TimeZone;
}
/// <summary>
/// Retrieves all known user time zones for the given guild.
/// <br />To be used within a <see langword="using"/> context.
/// </summary>
/// <returns>
/// An unsorted dictionary. Keys are time zones, values are user IDs representative of those zones.
/// </returns>
internal Dictionary<string, List<ulong>> GetGuildZones(ulong guildId) {
// Implementing the query from the previous iteration, in which further filtering is done by the caller.
// TODO consider bringing filtering back to this step, if there may be any advantage
var query = from entry in UserEntries
where entry.GuildId == (long)guildId
orderby entry.UserId
select Tuple.Create(entry.TimeZone, (ulong)entry.UserId);
var resultSet = new Dictionary<string, List<ulong>>();
foreach (var (tz, user) in query) {
if (!resultSet.ContainsKey(tz)) resultSet.Add(tz, new List<ulong>());
resultSet[tz].Add(user);
}
return resultSet;
}
#endregion
}

56
Data/Migrations/20220628235704_InitialMigration.Designer.cs generated Normal file
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@ -0,0 +1,56 @@
// <auto-generated />
using System;
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("20220628235704_InitialMigration")]
partial class InitialMigration
{
protected override void BuildTargetModel(ModelBuilder modelBuilder)
{
#pragma warning disable 612, 618
modelBuilder
.HasAnnotation("ProductVersion", "6.0.6")
.HasAnnotation("Relational:MaxIdentifierLength", 63);
NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
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<DateTime>("LastUpdate")
.ValueGeneratedOnAdd()
.HasColumnType("timestamp with time zone")
.HasColumnName("last_active")
.HasDefaultValueSql("now()");
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/20220628235704_InitialMigration.cs Normal file
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@ -0,0 +1,33 @@
using System;
using Microsoft.EntityFrameworkCore.Migrations;
#nullable disable
namespace WorldTime.Data.Migrations
{
public partial class InitialMigration : Migration
{
protected override void Up(MigrationBuilder migrationBuilder)
{
migrationBuilder.CreateTable(
name: "userdata",
columns: table => new
{
guild_id = table.Column<long>(type: "bigint", nullable: false),
user_id = table.Column<long>(type: "bigint", nullable: false),
zone = table.Column<string>(type: "text", nullable: false),
last_active = table.Column<DateTime>(type: "timestamp with time zone", nullable: false, defaultValueSql: "now()")
},
constraints: table =>
{
table.PrimaryKey("userdata_pkey", x => new { x.guild_id, x.user_id });
});
}
protected override void Down(MigrationBuilder migrationBuilder)
{
migrationBuilder.DropTable(
name: "userdata");
}
}
}

49
Data/Migrations/20220629003046_RemoveLastUpdated.Designer.cs generated Normal file
View file

@ -0,0 +1,49 @@
// <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("20220629003046_RemoveLastUpdated")]
partial class RemoveLastUpdated
{
protected override void BuildTargetModel(ModelBuilder modelBuilder)
{
#pragma warning disable 612, 618
modelBuilder
.HasAnnotation("ProductVersion", "6.0.6")
.HasAnnotation("Relational:MaxIdentifierLength", 63);
NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
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
}
}
}

27
Data/Migrations/20220629003046_RemoveLastUpdated.cs Normal file
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@ -0,0 +1,27 @@
using System;
using Microsoft.EntityFrameworkCore.Migrations;
#nullable disable
namespace WorldTime.Data.Migrations
{
public partial class RemoveLastUpdated : Migration
{
protected override void Up(MigrationBuilder migrationBuilder)
{
migrationBuilder.DropColumn(
name: "last_active",
table: "userdata");
}
protected override void Down(MigrationBuilder migrationBuilder)
{
migrationBuilder.AddColumn<DateTime>(
name: "last_active",
table: "userdata",
type: "timestamp with time zone",
nullable: false,
defaultValueSql: "now()");
}
}
}

47
Data/Migrations/BotDatabaseContextModelSnapshot.cs Normal file
View file

@ -0,0 +1,47 @@
// <auto-generated />
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Infrastructure;
using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
using WorldTime.Data;
#nullable disable
namespace WorldTime.Data.Migrations
{
[DbContext(typeof(BotDatabaseContext))]
partial class BotDatabaseContextModelSnapshot : ModelSnapshot
{
protected override void BuildModel(ModelBuilder modelBuilder)
{
#pragma warning disable 612, 618
modelBuilder
.HasAnnotation("ProductVersion", "6.0.6")
.HasAnnotation("Relational:MaxIdentifierLength", 63);
NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
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
}
}
}

15
Data/UserEntry.cs Normal file
View file

@ -0,0 +1,15 @@
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
namespace WorldTime.Data;
[Table("userdata")]
public class UserEntry {
[Key]
[Column("guild_id")]
public long GuildId { get; set; }
[Key]
[Column("user_id")]
public long UserId { get; set; }
[Column("zone")]
public string TimeZone { get; set; } = null!;
}

144
Database.cs
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@ -1,144 +0,0 @@
using Npgsql;
using NpgsqlTypes;
namespace WorldTime;
/// <summary>
/// Database abstractions
/// </summary>
public class Database {
private const string UserDatabase = "userdata";
private readonly string _connectionString;
internal Database(string connectionString) {
_connectionString = connectionString;
DoInitialDatabaseSetupAsync().ConfigureAwait(false).GetAwaiter().GetResult();
}
/// <summary>
/// Sets up and opens a database connection.
/// </summary>
private async Task<NpgsqlConnection> OpenConnectionAsync() {
var db = new NpgsqlConnection(_connectionString);
await db.OpenAsync().ConfigureAwait(false);
return db;
}
private async Task DoInitialDatabaseSetupAsync() {
using var db = await OpenConnectionAsync().ConfigureAwait(false);
using var c = db.CreateCommand();
c.CommandText = $"create table if not exists {UserDatabase} ("
+ $"guild_id BIGINT, "
+ "user_id BIGINT, "
+ "zone TEXT NOT NULL, "
+ "last_active TIMESTAMPTZ NOT NULL DEFAULT now(), "
+ "PRIMARY KEY (guild_id, user_id)" // index automatically created with this
+ ")";
await c.ExecuteNonQueryAsync().ConfigureAwait(false);
}
/// <summary>
/// Checks if a given guild contains at least one user data entry with recent enough activity.
/// </summary>
internal async Task<bool> HasAnyAsync(SocketGuild guild) {
using var db = await OpenConnectionAsync().ConfigureAwait(false);
using var c = db.CreateCommand();
c.CommandText = $@"
SELECT true FROM {UserDatabase}
WHERE
guild_id = @Gid
LIMIT 1
";
c.Parameters.Add("@Gid", NpgsqlDbType.Bigint).Value = (long)guild.Id;
await c.PrepareAsync().ConfigureAwait(false);
using var r = await c.ExecuteReaderAsync().ConfigureAwait(false);
return await r.ReadAsync().ConfigureAwait(false);
}
/// <summary>
/// Gets the number of unique time zones in the database.
/// </summary>
internal async Task<int> GetDistinctZoneCountAsync() {
using var db = await OpenConnectionAsync().ConfigureAwait(false);
using var c = db.CreateCommand();
c.CommandText = $"SELECT COUNT(DISTINCT zone) FROM {UserDatabase}";
return (int)((long?)await c.ExecuteScalarAsync() ?? -1); // ExecuteScalarAsync returns a long here
}
/// <summary>
/// Removes the specified user from the database.
/// </summary>
/// <returns>True if the removal was successful. False typically if the user did not exist.</returns>
internal async Task<bool> DeleteUserAsync(SocketGuildUser user) {
using var db = await OpenConnectionAsync().ConfigureAwait(false);
using var c = db.CreateCommand();
c.CommandText = $"DELETE FROM {UserDatabase} " +
"WHERE guild_id = @Gid AND user_id = @Uid";
c.Parameters.Add("@Gid", NpgsqlDbType.Bigint).Value = (long)user.Guild.Id;
c.Parameters.Add("@Uid", NpgsqlDbType.Bigint).Value = (long)user.Id;
await c.PrepareAsync().ConfigureAwait(false);
return await c.ExecuteNonQueryAsync().ConfigureAwait(false) > 0;
}
/// <summary>
/// Inserts/updates the specified user in the database.
/// </summary>
internal async Task UpdateUserAsync(SocketGuildUser user, string timezone) {
using var db = await OpenConnectionAsync().ConfigureAwait(false);
using var c = db.CreateCommand();
c.CommandText = $"INSERT INTO {UserDatabase} (guild_id, user_id, zone) " +
"VALUES (@Gid, @Uid, @Zone) " +
"ON CONFLICT (guild_id, user_id) DO " +
"UPDATE SET zone = EXCLUDED.zone";
c.Parameters.Add("@Gid", NpgsqlDbType.Bigint).Value = (long)user.Guild.Id;
c.Parameters.Add("@Uid", NpgsqlDbType.Bigint).Value = (long)user.Id;
c.Parameters.Add("@Zone", NpgsqlDbType.Text).Value = timezone;
await c.PrepareAsync().ConfigureAwait(false);
await c.ExecuteNonQueryAsync().ConfigureAwait(false);
}
/// <summary>
/// Retrieves the time zone name of a single user.
/// </summary>
internal async Task<string?> GetUserZoneAsync(SocketGuildUser user) {
using var db = await OpenConnectionAsync().ConfigureAwait(false);
using var c = db.CreateCommand();
c.CommandText = $"SELECT zone FROM {UserDatabase} " +
"WHERE guild_id = @Gid AND user_id = @Uid";
c.Parameters.Add("@Gid", NpgsqlDbType.Bigint).Value = (long)user.Guild.Id;
c.Parameters.Add("@Uid", NpgsqlDbType.Bigint).Value = (long)user.Id;
await c.PrepareAsync().ConfigureAwait(false);
return (string?)await c.ExecuteScalarAsync();
}
/// <summary>
/// Retrieves all known user time zones for the given guild.
/// Further filtering should be handled by the consumer.
/// </summary>
/// <returns>
/// An unsorted dictionary. Keys are time zones, values are user IDs representative of those zones.
/// </returns>
internal async Task<Dictionary<string, List<ulong>>> GetGuildZonesAsync(ulong guildId) {
using var db = await OpenConnectionAsync().ConfigureAwait(false);
using var c = db.CreateCommand();
c.CommandText = $@" -- Simpler query than 1.x; most filtering is now done by caller
SELECT zone, user_id FROM {UserDatabase}
WHERE
guild_id = @Gid
ORDER BY RANDOM() -- Randomize results for display purposes";
c.Parameters.Add("@Gid", NpgsqlDbType.Bigint).Value = (long)guildId;
await c.PrepareAsync().ConfigureAwait(false);
var r = await c.ExecuteReaderAsync().ConfigureAwait(false);
var resultSet = new Dictionary<string, List<ulong>>();
while (await r.ReadAsync().ConfigureAwait(false)) {
var tz = r.GetString(0);
var user = (ulong)r.GetInt64(1);
if (!resultSet.ContainsKey(tz)) resultSet.Add(tz, new List<ulong>());
resultSet[tz].Add(user);
}
return resultSet;
}
}

10
Program.cs
View file

@ -18,16 +18,10 @@ class Program {
Environment.Exit((int)ExitCodes.ConfigError);
}
Database? d = null;
try {
d = new(cfg.DbConnectionString);
} catch (Npgsql.NpgsqlException e) {
Console.WriteLine("Error when attempting to connect to database: " + e.Message);
Environment.Exit((int)ExitCodes.DatabaseError);
}
Data.BotDatabaseContext.NpgsqlConnectionString = cfg.DbConnectionString;
Console.CancelKeyPress += OnCancelKeyPressed;
_bot = new WorldTime(cfg, d);
_bot = new WorldTime(cfg);
await _bot.StartAsync().ConfigureAwait(false);
await Task.Delay(-1).ConfigureAwait(false);

20
WorldTime.cs
View file

@ -4,6 +4,7 @@ using Discord.Interactions;
using Microsoft.Extensions.DependencyInjection;
using System.Reflection;
using System.Text;
using WorldTime.Data;
namespace WorldTime;
@ -33,10 +34,9 @@ internal class WorldTime : IDisposable {
internal Configuration Config { get; }
internal DiscordShardedClient DiscordClient => _services.GetRequiredService<DiscordShardedClient>();
internal Database Database => _services.GetRequiredService<Database>();
public WorldTime(Configuration cfg, Database d) {
var ver = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version;
public WorldTime(Configuration cfg) {
var ver = Assembly.GetExecutingAssembly().GetName().Version;
Program.Log(nameof(WorldTime), $"Version {ver!.ToString(3)} is starting...");
Config = cfg;
@ -51,7 +51,7 @@ internal class WorldTime : IDisposable {
_services = new ServiceCollection()
.AddSingleton(new DiscordShardedClient(clientConf))
.AddSingleton(s => new InteractionService(s.GetRequiredService<DiscordShardedClient>()))
.AddSingleton(d)
.AddTransient(typeof(BotDatabaseContext))
.BuildServiceProvider();
DiscordClient.Log += DiscordClient_Log;
DiscordClient.ShardReady += DiscordClient_ShardReady;
@ -60,7 +60,7 @@ internal class WorldTime : IDisposable {
DiscordClient.InteractionCreated += DiscordClient_InteractionCreated;
iasrv.SlashCommandExecuted += InteractionService_SlashCommandExecuted;
_commandsTxt = new CommandsText(this, Database);
_commandsTxt = new CommandsText(this, _services);
// Start status reporting thread
_mainCancel = new CancellationTokenSource();
@ -189,10 +189,12 @@ internal class WorldTime : IDisposable {
// Proactively fill guild user cache if the bot has any data for the respective guild
// Can skip an extra query if the last_seen update is known to have been successful, otherwise query for any users
var guild = channel.Guild;
if (!guild.HasAllMembers && await Database.HasAnyAsync(guild)) {
// Event handler hangs if awaited normally or used with Task.Run
await Task.Factory.StartNew(guild.DownloadUsersAsync);
if (!channel.Guild.HasAllMembers) {
using var db = _services.GetRequiredService<BotDatabaseContext>();
if (db.HasAnyUsers(channel.Guild)) {
// Event handler hangs if awaited normally or used with Task.Run
await Task.Factory.StartNew(channel.Guild.DownloadUsersAsync);
}
}
}

10
WorldTime.csproj
View file

@ -12,10 +12,18 @@
<ItemGroup>
<PackageReference Include="CommandLineParser" Version="2.8.0" />
<PackageReference Include="Discord.Net" Version="3.5.0" />
<PackageReference Include="EFCore.NamingConventions" Version="6.0.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="6.0.6" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="6.0.6">
<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="3.1.0" />
<PackageReference Include="Npgsql" Version="6.0.4" />
<PackageReference Include="Npgsql" Version="6.0.5" />
<PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="6.0.5" />
<PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL.Design" Version="1.1.0" />
</ItemGroup>
</Project>