added db reset script

1 files changed, 104 insertions, 0 deletions

diff --git a/scripts/reset.db.sh b/scripts/reset.db.sh
new file mode 100755
index 0000000..0a3b743
--- /dev/null
+++ b/scripts/reset.db.sh
@@ -0,0 +1,104 @@
+#!/usr/bin/env bash
+set -e
+
+DEFAULT_DB="lain"
+DEFAULT_OWNER="$(whoami)"
+DEFAULT_HOST="localhost"
+DEFAULT_PORT="5432"
+
+read -p "Enter database name [$DEFAULT_DB]: " DB_NAME
+DB_NAME="${DB_NAME:-$DEFAULT_DB}"
+
+read -p "Enter database owner username [$DEFAULT_OWNER]: " DB_OWNER
+DB_OWNER="${DB_OWNER:-$DEFAULT_OWNER}"
+
+read -s -p "Enter password for $DB_OWNER (optional): " DB_PASSWORD
+echo
+
+# ---------- connection strategy ----------
+
+PSQL_BASE="psql -d postgres -U $DB_OWNER"
+
+if [ -n "$DB_PASSWORD" ]; then
+    export PGPASSWORD="$DB_PASSWORD"
+fi
+
+# Prefer TCP (Docker-safe)
+PSQL_TCP="$PSQL_BASE -h $DEFAULT_HOST -p $DEFAULT_PORT"
+# Fallback: local socket / peer-auth
+PSQL_LOCAL="$PSQL_BASE"
+
+echo
+echo "Detecting PostgreSQL connection mode..."
+
+if $PSQL_TCP -c "SELECT 1" >/dev/null 2>&1; then
+    PSQL_CMD="$PSQL_TCP"
+    CONNECTION_INFO="TCP ($DEFAULT_HOST:$DEFAULT_PORT)"
+elif $PSQL_LOCAL -c "SELECT 1" >/dev/null 2>&1; then
+    PSQL_CMD="$PSQL_LOCAL"
+    CONNECTION_INFO="Local socket (peer / trust)"
+else
+    echo "❌ Unable to connect to PostgreSQL."
+    echo "Tried:"
+    echo "  - TCP:      $DEFAULT_HOST:$DEFAULT_PORT"
+    echo "  - Local:    UNIX socket"
+    echo
+    echo "Fix one of the following:"
+    echo "  • Docker Postgres not running"
+    echo "  • Wrong user ($DB_OWNER)"
+    echo "  • Password required but not provided"
+    echo "  • pg_hba.conf blocks access"
+    exit 1
+fi
+
+echo "Connected via: $CONNECTION_INFO"
+
+# ---------- existence check ----------
+
+DB_EXISTS=$($PSQL_CMD -Atc \
+  "SELECT 1 FROM pg_database WHERE datname = '$DB_NAME';" \
+  || true)
+
+if [ "$DB_EXISTS" = "1" ]; then
+    ACTION="reset"
+else
+    ACTION="create"
+fi
+
+echo
+echo "=== Database $ACTION ==="
+echo "Database: $DB_NAME"
+echo "Owner:    $DB_OWNER"
+echo "Auth:     $CONNECTION_INFO"
+echo
+
+read -p "Proceed? [Y/n]: " CONFIRM
+if [[ "$CONFIRM" =~ ^[Nn]$ ]]; then
+    echo "Cancelled."
+    exit 0
+fi
+
+# ---------- drop + create ----------
+
+echo
+echo "Applying changes..."
+
+$PSQL_CMD -c "DROP DATABASE IF EXISTS \"$DB_NAME\";"
+$PSQL_CMD -c "CREATE DATABASE \"$DB_NAME\" OWNER \"$DB_OWNER\";"
+
+echo
+echo "✅ Database '$DB_NAME' ready."
+
+# ---------- DSN ----------
+
+if [ -n "$DB_PASSWORD" ]; then
+    DSN="postgresql://$DB_OWNER:$DB_PASSWORD@$DEFAULT_HOST:$DEFAULT_PORT/$DB_NAME?sslmode=disable"
+else
+    DSN="postgresql://$DB_OWNER@$DEFAULT_HOST:$DEFAULT_PORT/$DB_NAME?sslmode=disable"
+fi
+
+echo
+echo "DSN:"
+echo "$DSN"
+
+unset PGPASSWORD