feat: add migration & drop scripts of database

scripts/db-drop.sh

@@ -0,0 +1,72 @@
+#!/bin/bash
+
+set -e
+
+PROJECT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+CONFIG_FILE="${PROJECT_ROOT}/config.toml"
+MIGRATIONS_DIR="${PROJECT_ROOT}/db/migrations"
+
+GREEN='\033[0;32m'
+RED='\033[0;31m'
+YELLOW='\033[1;33m'
+NC='\033[0m'
+
+if [ ! -f "$CONFIG_FILE" ]; then
+    echo -e "${RED}Error: Config file not found${NC}"
+    exit 1
+fi
+
+if [ ! -d "$MIGRATIONS_DIR" ]; then
+    echo -e "${RED}Error: Migrations directory not found${NC}"
+    exit 1
+fi
+
+parse_toml_value() {
+    local key=$1
+    local section=$2
+    grep -A 20 "^\[$section\]" "$CONFIG_FILE" | grep "^$key" | head -1 | sed 's/.*=[ ]*//' | tr -d '"' | tr -d "'"
+}
+
+DB_HOST=$(parse_toml_value "host" "postgres")
+DB_PORT=$(parse_toml_value "port" "postgres")
+DB_USER=$(parse_toml_value "user" "postgres")
+DB_PASSWORD=$(parse_toml_value "password" "postgres")
+DB_NAME=$(parse_toml_value "database" "postgres")
+DB_SSLMODE=$(parse_toml_value "sslmode" "postgres")
+
+if [ -z "$DB_HOST" ] || [ -z "$DB_PORT" ] || [ -z "$DB_USER" ] || [ -z "$DB_NAME" ]; then
+    echo -e "${RED}Error: Invalid database configuration${NC}"
+    exit 1
+fi
+
+DB_SSLMODE=${DB_SSLMODE:-disable}
+
+echo -e "${YELLOW}WARNING: This will drop all database tables!${NC}"
+read -p "Type 'yes' to confirm: " confirmation
+
+if [ "$confirmation" != "yes" ]; then
+    echo "Cancelled"
+    exit 0
+fi
+
+export PGPASSWORD="$DB_PASSWORD"
+PSQL_CMD="psql -h $DB_HOST -p $DB_PORT -U $DB_USER -d $DB_NAME"
+
+if ! $PSQL_CMD -c "SELECT 1;" > /dev/null 2>&1; then
+    echo -e "${RED}Error: Cannot connect to database${NC}"
+    exit 1
+fi
+
+for migration_file in $(ls -r "$MIGRATIONS_DIR"/*.down.sql 2>/dev/null); do
+    if [ -f "$migration_file" ]; then
+        if ! $PSQL_CMD -f "$migration_file" > /dev/null 2>&1; then
+            echo -e "${RED}Error: Drop failed - $(basename "$migration_file")${NC}"
+            exit 1
+        fi
+    fi
+done
+
+echo -e "${GREEN}✓ Database tables dropped${NC}"
+
+unset PGPASSWORD
+