Add command to delete all switches

PluralKit.Bot/Commands/SwitchCommands.cs

@@ -120,6 +120,17 @@ namespace PluralKit.Bot.Commands
         {
             ctx.CheckSystem();
 
+            if (ctx.Match("all", "clear"))
+            {
+                // Subcommand: "delete all"
+                var purgeMsg = await ctx.Reply($"{Emojis.Warn} This will delete *all registered switches* in your system. Are you sure you want to proceed?");
+                if (!await ctx.PromptYesNo(purgeMsg))
+                    throw Errors.GenericCancelled();
+                await _data.DeleteAllSwitches(ctx.System);
+                await ctx.Reply($"{Emojis.Success} Cleared system switches!");
+                return;
+            }
+            
             // Fetch the last two switches for the system to do bounds checking on
             var lastTwoSwitches = (await _data.GetSwitches(ctx.System, 2)).ToArray();
             if (lastTwoSwitches.Length == 0) throw Errors.NoRegisteredSwitches;

PluralKit.Core/Stores.cs

@@ -303,6 +303,11 @@ namespace PluralKit {
         /// </summary>
         Task DeleteSwitch(PKSwitch sw);
 
+        /// <summary>
+        /// Deletes all switches in a given system from the data store.
+        /// </summary>
+        Task DeleteAllSwitches(PKSystem system);
+
         /// <summary>
         /// Gets the total amount of systems in the data store.
         /// </summary>
@@ -416,6 +421,12 @@ namespace PluralKit {
                 return await conn.QueryAsync<ulong>("select uid from accounts where system = @Id", new { Id = system.Id });
         }
 
+        public async Task DeleteAllSwitches(PKSystem system)
+        {
+            using (var conn = await _conn.Obtain())
+                await conn.ExecuteAsync("delete from switches where system = @Id", system);
+        }
+
         public async Task<ulong> GetTotalSystems()
         {
             using (var conn = await _conn.Obtain())

docs/1-user-guide.md

@@ -334,6 +334,8 @@ Note that you can't move a switch *before* the *previous switch*, to avoid break
 If you'd like to delete the most recent switch, use the `pk;switch delete` command. You'll need to confirm
 the deletion by clicking a reaction.
 
+If you'd like to clear your system's entire switch history, use the `pk;switch delete all` command. This isn't reversible!
+
 ### Querying fronter
 To see the current fronter in a system, use the `pk;system fronter` command. You can use this on your current system, or on other systems. For example:
 

docs/2-command-list.md

@@ -44,6 +44,7 @@ Words in \<angle brackets> are *required parameters*. Words in [square brackets]
 - `pk;switch [member...]` - Registers a switch with the given members.
 - `pk;switch move <time>` - Moves the latest switch backwards in time.
 - `pk;switch delete` - Deletes the latest switch.
+- `pk;switch delete all` - Deletes every logged switch.
 - `pk;switch out` - Registers a 'switch-out' - a switch with no associated members.
 ## Utility
 - `pk;log <channel>` - Sets the channel to log all proxied messages.