Restructure database tables

migrations/20250506184716_remove_unused_columns.sql

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+-- Drop all old tables
+DROP TABLE IF EXISTS users_old;
+DROP TABLE IF EXISTS messages;
+DROP TABLE IF EXISTS embeds;
+DROP TABLE IF EXISTS embed_fields;
+DROP TABLE IF EXISTS command_aliases;
+DROP TABLE IF EXISTS macro;
+DROP TABLE IF EXISTS roles;
+
+-- Drop columns from channels that are no longer used
+ALTER TABLE channels DROP COLUMN `name`;
+ALTER TABLE channels DROP COLUMN `blacklisted`;
+
+-- Drop columns from guilds table that are no longer used and rebuild table
+CREATE TABLE guilds_new (
+    id BIGINT UNSIGNED NOT NULL PRIMARY KEY,
+    ephemeral_confirmations BOOLEAN NOT NULL DEFAULT 0
+);
+INSERT INTO guilds_new (id, ephemeral_confirmations) SELECT guild, ephemeral_confirmations FROM guilds;
+RENAME TABLE guilds TO guilds_old;
+RENAME TABLE guilds_new TO guilds;
+
+-- Update fk on channels to point at new guild table
+ALTER TABLE channels
+    DROP FOREIGN KEY `channels_ibfk_1`,
+    MODIFY COLUMN guild_id BIGINT UNSIGNED,
+    ADD FOREIGN KEY `fk_guild_id` (`guild_id`)
+        REFERENCES `guilds` (`id`)
+        ON DELETE CASCADE
+        ON UPDATE CASCADE;
+UPDATE channels SET guild_id = (SELECT guild FROM guilds_old WHERE id = guild_id);
+
+-- Rebuild todos table
+CREATE TABLE `todos_new` (
+    `id`         INT UNSIGNED NOT NULL AUTO_INCREMENT,
+    `guild_id`   BIGINT UNSIGNED DEFAULT NULL,
+    `channel_id` INT UNSIGNED DEFAULT NULL,
+    `user_id`    BIGINT UNSIGNED DEFAULT NULL,
+    `value`      VARCHAR(2000) NOT NULL,
+    PRIMARY KEY (`id`),
+    FOREIGN KEY `fk_channel_id` (`channel_id`)
+        REFERENCES `channels` (`id`)
+        ON DELETE SET NULL
+        ON UPDATE CASCADE,
+    FOREIGN KEY `fk_guild_id` (`guild_id`)
+        REFERENCES `guilds` (`id`)
+        ON DELETE CASCADE
+        ON UPDATE CASCADE,
+    FOREIGN KEY `fk_user_id` (`user_id`)
+        REFERENCES `users` (`id`)
+        ON DELETE SET NULL
+        ON UPDATE CASCADE
+);
+INSERT INTO todos_new (id, guild_id, channel_id, user_id, value) SELECT id, (SELECT guild FROM guilds_old WHERE id = guild_id), channel_id, user_id, value FROM todos;
+RENAME TABLE todos TO todos_old;
+RENAME TABLE todos_new TO todos;
+DROP TABLE todos_old;
+
+-- Update fk on reminder_template to point at new guild table
+ALTER TABLE reminder_template
+    DROP FOREIGN KEY `reminder_template_ibfk_1`,
+    MODIFY COLUMN guild_id BIGINT UNSIGNED NOT NULL,
+    ADD FOREIGN KEY `fk_guild_id` (`guild_id`)
+        REFERENCES `guilds` (`id`)
+        ON DELETE CASCADE
+        ON UPDATE CASCADE;
+UPDATE reminder_template SET guild_id = (SELECT guild FROM guilds_old WHERE id = guild_id);
+
+-- Update fk on command_macro to point at new guild table
+ALTER TABLE command_macro
+    DROP FOREIGN KEY `command_macro_ibfk_1`,
+    MODIFY COLUMN guild_id BIGINT UNSIGNED NOT NULL,
+    ADD FOREIGN KEY `fk_guild_id` (`guild_id`)
+        REFERENCES `guilds` (`id`)
+        ON DELETE CASCADE
+        ON UPDATE CASCADE;
+UPDATE command_macro SET guild_id = (SELECT guild FROM guilds_old WHERE id = guild_id);
+
+DROP TABLE guilds_old;