const chainSql =
  'CREATE TABLE IF NOT EXISTS chain ( ' +
  'id INTEGER PRIMARY KEY AUTOINCREMENT, ' +
  'image TEXT, ' +
  'name TEXT ' +
  ');';

const establishmentSql =
  'CREATE TABLE IF NOT EXISTS establishment ( ' +
  'id INTEGER PRIMARY KEY AUTOINCREMENT ,' +
  'address TEXT NOT NULL, ' +
  'chain_id INTEGER NOT NULL, ' +
  'FOREIGN KEY (chain_id) REFERENCES chain(id) ON DELETE CASCADE ' +
  ');';

const establishmentChainIdxSql =
  'CREATE INDEX IF NOT EXISTS idx_establishment_chain_id ON establishment(chain_id);';

const productSql =
  'CREATE TABLE IF NOT EXISTS product ( ' +
  'id INTEGER PRIMARY KEY AUTOINCREMENT, ' +
  'barcode TEXT NOT NULL UNIQUE, ' +
  'name TEXT NOT NULL DEFAULT "", ' +
  'image TEXT ' +
  ');';

const productEstablishmentSql =
  'CREATE TABLE IF NOT EXISTS product_establishment ( ' +
  'id INTEGER PRIMARY KEY AUTOINCREMENT, ' +
  'product_id INTEGER NOT NULL, ' +
  'establishment_id INTEGER NOT NULL, ' +
  'FOREIGN KEY (product_id) REFERENCES product(id) ON DELETE CASCADE, ' +
  'FOREIGN KEY (establishment_id) REFERENCES establishment(id) ON DELETE CASCADE, ' +
  'UNIQUE(product_id, establishment_id) ' +
  ');';

const purchaseSql =
  'CREATE TABLE IF NOT EXISTS purchase ( ' +
  'id INTEGER PRIMARY KEY AUTOINCREMENT, ' +
  'establishment_id INTEGER NOT NULL, ' +
  'product_id INTEGER NOT NULL, ' +
  'price INTEGER NOT NULL DEFAULT 0, ' +
  'quantity INTEGER NOT NULL DEFAULT 1, ' +
  'date INTEGER NOT NULL, ' +
  'FOREIGN KEY (establishment_id) REFERENCES establishment(id) ON DELETE CASCADE, ' +
  'FOREIGN KEY (product_id) REFERENCES product(id) ON DELETE CASCADE ' +
  ');';

export const tables: [string, any[]][] = [
  [chainSql, []],
  [establishmentSql, []],
  [establishmentChainIdxSql, []],
  [productSql, []],
  [productEstablishmentSql, []],
  [purchaseSql, []],
];