migrate & create db

main/create.sql

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+CREATE TABLE messages (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    username VARCHAR(50) NOT NULL,
+    message TEXT NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    signature TEXT,
+    is_encrypted BOOLEAN DEFAULT FALSE,
+    INDEX idx_created_at (created_at)
+);
+
+CREATE TABLE users (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    username VARCHAR(50) NOT NULL UNIQUE,
+    password VARCHAR(255) NOT NULL,
+    pgp_key TEXT,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    is_moderator TINYINT(1) NOT NULL DEFAULT 0,
+    login_attempts INT NOT NULL DEFAULT 0,
+    last_attempt TIMESTAMP NULL,
+    is_blocked TINYINT(1) NOT NULL DEFAULT 0,
+    block_reason TEXT,
+    INDEX idx_username (username)
+);
+
+CREATE TABLE registrations (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    INDEX idx_created_at (created_at)
+); 

main/migrate.sql

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+DELIMITER //
+CREATE OR REPLACE PROCEDURE migrate_if_needed()
+BEGIN
+    IF EXISTS (
+        SELECT * FROM information_schema.columns 
+        WHERE table_name = 'registrations' AND column_name = 'ip'
+    ) THEN
+        DROP INDEX IF EXISTS idx_ip_created ON registrations;
+        ALTER TABLE registrations DROP COLUMN ip;
+    END IF;
+END //
+DELIMITER ;
+
+CALL migrate_if_needed();
+DROP PROCEDURE IF EXISTS migrate_if_needed;