From 7c3b4b9af9901a3932820e78e5d81135030f8d11 Mon Sep 17 00:00:00 2001
From: Ske <voltasalt@gmail.com>
Date: Sat, 2 Nov 2019 22:46:51 +0100
Subject: [PATCH] Add command to delete all switches

---
 PluralKit.Bot/Commands/SwitchCommands.cs | 11 +++++++++++
 PluralKit.Core/Stores.cs                 | 11 +++++++++++
 docs/1-user-guide.md                     |  2 ++
 docs/2-command-list.md                   |  1 +
 4 files changed, 25 insertions(+)

diff --git a/PluralKit.Bot/Commands/SwitchCommands.cs b/PluralKit.Bot/Commands/SwitchCommands.cs
index 49c5b4bf..5bb91ea5 100644
--- a/PluralKit.Bot/Commands/SwitchCommands.cs
+++ b/PluralKit.Bot/Commands/SwitchCommands.cs
@@ -119,6 +119,17 @@ namespace PluralKit.Bot.Commands
         public async Task SwitchDelete(Context ctx)
         {
             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();
diff --git a/PluralKit.Core/Stores.cs b/PluralKit.Core/Stores.cs
index 320a8730..ebfa79c8 100644
--- a/PluralKit.Core/Stores.cs
+++ b/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())
diff --git a/docs/1-user-guide.md b/docs/1-user-guide.md
index 47950f30..02109466 100644
--- a/docs/1-user-guide.md
+++ b/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:
 
diff --git a/docs/2-command-list.md b/docs/2-command-list.md
index a7f46175..8f03ada2 100644
--- a/docs/2-command-list.md
+++ b/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.