feat: db migrations, encrypted passwords

internal/migration/migrations.go

@@ -0,0 +1,102 @@
+package migration
+
+import (
+	"database/sql"
+	"golang.org/x/crypto/bcrypt"
+)
+
+func init() {
+	// Register migrations
+	Register(1, "Initial schema with bcrypt passwords", migrateInitialSchemaUp, migrateInitialSchemaDown)
+}
+
+// Initial schema creation with bcrypt passwords - version 1
+func migrateInitialSchemaUp(db *sql.DB) error {
+	// Create channels table
+	_, err := db.Exec(`
+		CREATE TABLE IF NOT EXISTS channels (
+			id INTEGER PRIMARY KEY AUTOINCREMENT,
+			platform TEXT NOT NULL,
+			platform_channel_id TEXT NOT NULL,
+			enabled BOOLEAN NOT NULL DEFAULT 0,
+			channel_raw TEXT NOT NULL,
+			UNIQUE(platform, platform_channel_id)
+		)
+	`)
+	if err != nil {
+		return err
+	}
+
+	// Create channel_plugin table
+	_, err = db.Exec(`
+		CREATE TABLE IF NOT EXISTS channel_plugin (
+			id INTEGER PRIMARY KEY AUTOINCREMENT,
+			channel_id INTEGER NOT NULL,
+			plugin_id TEXT NOT NULL,
+			enabled BOOLEAN NOT NULL DEFAULT 0,
+			config TEXT NOT NULL DEFAULT '{}',
+			UNIQUE(channel_id, plugin_id),
+			FOREIGN KEY (channel_id) REFERENCES channels (id) ON DELETE CASCADE
+		)
+	`)
+	if err != nil {
+		return err
+	}
+
+	// Create users table with bcrypt passwords
+	_, err = db.Exec(`
+		CREATE TABLE IF NOT EXISTS users (
+			id INTEGER PRIMARY KEY AUTOINCREMENT,
+			username TEXT NOT NULL UNIQUE,
+			password TEXT NOT NULL
+		)
+	`)
+	if err != nil {
+		return err
+	}
+
+	// Create default admin user with bcrypt password
+	hashedPassword, err := bcrypt.GenerateFromPassword([]byte("admin"), 12)
+	if err != nil {
+		return err
+	}
+	
+	// Check if users table is empty before inserting
+	var count int
+	err = db.QueryRow("SELECT COUNT(*) FROM users").Scan(&count)
+	if err != nil {
+		return err
+	}
+	
+	if count == 0 {
+		_, err = db.Exec(
+			"INSERT INTO users (username, password) VALUES (?, ?)",
+			"admin", string(hashedPassword),
+		)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func migrateInitialSchemaDown(db *sql.DB) error {
+	// Drop tables in reverse order of dependencies
+	_, err := db.Exec(`DROP TABLE IF EXISTS channel_plugin`)
+	if err != nil {
+		return err
+	}
+
+	_, err = db.Exec(`DROP TABLE IF EXISTS channels`)
+	if err != nil {
+		return err
+	}
+
+	_, err = db.Exec(`DROP TABLE IF EXISTS users`)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}