// file      : odb/mysql/sql-schema.cxx
// author    : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC
// license   : GNU GPL v3; see accompanying LICENSE file

#include <odb/mysql/common.hxx>
#include <odb/mysql/schema.hxx>
#include <odb/mysql/sql-schema.hxx>

using namespace std;

namespace mysql
{
  namespace
  {
    struct schema_emitter: emitter, context
    {
      schema_emitter (context& c): context (c) {}

      virtual void
      pre ()
      {
        first_ = true;
      }

      virtual void
      line (const std::string& l)
      {
        if (first_)
          first_ = false;
        else
          os << endl;

        os << l;
      }

      virtual void
      post ()
      {
        os << ';' << endl
           << endl;
      }

    private:
      bool first_;
    };

    static char const file_header[] =
    "/* This file was generated by ODB, object-relational mapping (ORM)\n"
    " * compiler for C++.\n"
    " */\n\n";
  }

  void
  generate_schema (context& ctx)
  {
    ctx.os << file_header;
    schema_emitter emitter (ctx);

    // Drop.
    //
    {
      traversal::unit unit;
      traversal::defines unit_defines;
      traversal::namespace_ ns;
      class_drop c (ctx, emitter);

      unit >> unit_defines >> ns;
      unit_defines >> c;

      traversal::defines ns_defines;

      ns >> ns_defines >> ns;
      ns_defines >> c;
      unit.dispatch (ctx.unit);
    }

    ctx.os << endl;

    // Create.
    //
    {
      traversal::unit unit;
      traversal::defines unit_defines;
      traversal::namespace_ ns;
      class_create c (ctx, emitter);

      unit >> unit_defines >> ns;
      unit_defines >> c;

      traversal::defines ns_defines;

      ns >> ns_defines >> ns;
      ns_defines >> c;
      unit.dispatch (ctx.unit);
    }
  }
}