Ensure database schema on app startup

Leaflet2/sql/miskin_schema.sql

@@ -1,8 +1,7 @@
-DROP DATABASE IF EXISTS webgis_miskin;
-CREATE DATABASE webgis_miskin CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+CREATE DATABASE IF NOT EXISTS webgis_miskin CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
 USE webgis_miskin;
 
-CREATE TABLE admins (
+CREATE TABLE IF NOT EXISTS admins (
     id INT AUTO_INCREMENT PRIMARY KEY,
     username VARCHAR(50) NOT NULL UNIQUE,
     password_hash VARCHAR(255) NOT NULL,
@@ -11,10 +10,10 @@ CREATE TABLE admins (
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
 ) ENGINE=InnoDB;
 
-INSERT INTO admins (username, password_hash, nama) VALUES
+INSERT IGNORE INTO admins (username, password_hash, nama) VALUES
 ('admin', '$2y$10$7O061pVz/aZ5YNK/fQyYIePIPnzDb.uZn38pC/Te3s7gRyko20dIK', 'Administrator');
 
-CREATE TABLE rumah_ibadah (
+CREATE TABLE IF NOT EXISTS rumah_ibadah (
     id INT AUTO_INCREMENT PRIMARY KEY,
     nama VARCHAR(150) NOT NULL,
     jenis ENUM('Masjid', 'Gereja', 'Pura', 'Vihara', 'Klenteng', 'Lainnya') NOT NULL,
@@ -26,7 +25,7 @@ CREATE TABLE rumah_ibadah (
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
 ) ENGINE=InnoDB;
 
-CREATE TABLE penduduk_miskin (
+CREATE TABLE IF NOT EXISTS penduduk_miskin (
     id INT AUTO_INCREMENT PRIMARY KEY,
     kk_nama VARCHAR(150) NOT NULL,
     kk_nik VARCHAR(20),
@@ -52,7 +51,7 @@ CREATE TABLE penduduk_miskin (
     FOREIGN KEY (ibadah_id) REFERENCES rumah_ibadah(id) ON DELETE SET NULL
 ) ENGINE=InnoDB;
 
-CREATE TABLE anggota_keluarga (
+CREATE TABLE IF NOT EXISTS anggota_keluarga (
     id INT AUTO_INCREMENT PRIMARY KEY,
     penduduk_id INT NOT NULL,
     nama VARCHAR(150) NOT NULL,
@@ -62,7 +61,7 @@ CREATE TABLE anggota_keluarga (
     FOREIGN KEY (penduduk_id) REFERENCES penduduk_miskin(id) ON DELETE CASCADE
 ) ENGINE=InnoDB;
 
-CREATE TABLE riwayat_bantuan (
+CREATE TABLE IF NOT EXISTS riwayat_bantuan (
     id INT AUTO_INCREMENT PRIMARY KEY,
     penduduk_id INT NOT NULL,
     jenis_bantuan VARCHAR(120) NOT NULL,