using Microsoft.EntityFrameworkCore.Migrations;

#nullable disable

namespace Pf2eModel.Migrations;

/// <inheritdoc />
public partial class Function : Migration
{
    /// <inheritdoc />
    protected override void Up(MigrationBuilder migrationBuilder)
    {
        migrationBuilder.Sql("""
CREATE OR REPLACE FUNCTION f_truncate_tables()		
    RETURNS void		
    LANGUAGE plpgsql AS		
$func$		
BEGIN		
    EXECUTE		
    (SELECT 'TRUNCATE TABLE '		
        || string_agg(format('%I.%I', schemaname, tablename), ', ')		
        || ' CASCADE;'		
    FROM   pg_tables		
    WHERE  schemaname = 'public'		
      AND  tablename != '__EFMigrationsHistory'		
    );		
END		
$func$;		
""");
        migrationBuilder.Sql("""
CREATE OR REPLACE FUNCTION f_drop_tables()		
  RETURNS void		
  LANGUAGE plpgsql AS		
$func$		
BEGIN		
  EXECUTE		
  (SELECT 'DROP TABLE '		
       || string_agg(format('%I.%I', schemaname, tablename), ', ')		
       || ' CASCADE;'		
   FROM   pg_tables		
   WHERE  schemaname = 'public'		
  );		
END		
$func$;		
""");
        migrationBuilder.Sql("""
CREATE OR REPLACE FUNCTION f_permission_tables(_username text)		
  RETURNS void		
  LANGUAGE plpgsql AS		
$func$		
DECLARE		
   _tbl text;		
   _sch text;		
BEGIN		
   FOR _sch, _tbl IN 		
      SELECT schemaname, tablename		
      FROM   pg_tables		
      WHERE  schemaname = 'public'		
   LOOP		
      EXECUTE format('ALTER TABLE %I.%I OWNER TO %I', _sch, _tbl, _username);		
   END LOOP;		
END		
$func$;		
""");
    }

    /// <inheritdoc />
    protected override void Down(MigrationBuilder migrationBuilder)
    {
        migrationBuilder.Sql("DROP FUNCTION f_truncate_tables;");
        migrationBuilder.Sql("DROP FUNCTION f_drop_tables;");
        migrationBuilder.Sql("DROP FUNCTION f_permission_tables;");
    }
}