/*
 *  Copyright © 2011 Igalia S.L.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#include "config.h"
#include "ephy-sqlite-statement.h"

#include "ephy-sqlite-connection.h"
#include <sqlite3.h>

enum
{
  PROP_0,
  PROP_PREPARED_STATEMENT,
  PROP_CONNECTION
};

struct _EphySQLiteStatementPrivate {
  sqlite3_stmt *prepared_statement;
  EphySQLiteConnection *connection;
};

#define EPHY_SQLITE_STATEMENT_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE((o), EPHY_TYPE_SQLITE_STATEMENT, EphySQLiteStatementPrivate))

G_DEFINE_TYPE (EphySQLiteStatement, ephy_sqlite_statement, G_TYPE_OBJECT);

static void
ephy_sqlite_statement_set_property (GObject *object, guint property_id, const GValue *value, GParamSpec *pspec)
{
  EphySQLiteStatement *self = EPHY_SQLITE_STATEMENT (object);

  switch (property_id) {
    case PROP_PREPARED_STATEMENT:
      self->priv->prepared_statement = g_value_get_pointer (value);
      break;
    case PROP_CONNECTION:
      self->priv->connection = EPHY_SQLITE_CONNECTION (g_object_ref (g_value_get_object (value)));
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (self, property_id, pspec);
      break;
  }
}

static void
ephy_sqlite_statement_get_property (GObject *object, guint property_id, GValue *value, GParamSpec *pspec)
{
  EphySQLiteStatement *self = EPHY_SQLITE_STATEMENT (object);

  switch (property_id) {
    case PROP_PREPARED_STATEMENT:
      g_value_set_pointer (value, self->priv->prepared_statement);
      break;
    case PROP_CONNECTION:
      g_value_set_object (value, self->priv->connection);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
      break;
  }
}

static void
ephy_sqlite_statement_finalize (GObject *self)
{
  EphySQLiteStatementPrivate *priv = EPHY_SQLITE_STATEMENT (self)->priv;

  if (priv->prepared_statement) {
    sqlite3_finalize (priv->prepared_statement);
    priv->prepared_statement = NULL;
  }

  if (priv->connection) {
    g_object_unref (priv->connection);
    priv->connection = NULL;
  }

  G_OBJECT_CLASS (ephy_sqlite_statement_parent_class)->dispose (self);
}

static void
ephy_sqlite_statement_class_init (EphySQLiteStatementClass *klass)
{
  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
  gobject_class->finalize = ephy_sqlite_statement_finalize;
  gobject_class->get_property = ephy_sqlite_statement_get_property;
  gobject_class->set_property = ephy_sqlite_statement_set_property;
  g_type_class_add_private (gobject_class, sizeof (EphySQLiteStatementPrivate));

  g_object_class_install_property (gobject_class,
                                   PROP_PREPARED_STATEMENT,
                                   g_param_spec_pointer ("prepared-statement",
                                                        "Prepared statement",
                                                        "The statement's backing SQLite prepared statement",
                                                        G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB));

  g_object_class_install_property (gobject_class,
                                   PROP_CONNECTION,
                                   g_param_spec_object ("connection",
                                                        "Connection",
                                                        "The statement's backing SQLite connection",
                                                        EPHY_TYPE_SQLITE_CONNECTION,
                                                        G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB));
}

static void
ephy_sqlite_statement_init (EphySQLiteStatement *self)
{
  self->priv = EPHY_SQLITE_STATEMENT_GET_PRIVATE (self);
  self->priv->prepared_statement = NULL;
  self->priv->connection = NULL;
}

gboolean
ephy_sqlite_statement_bind_null (EphySQLiteStatement *self, int column, GError **error)
{
  if (sqlite3_bind_null (self->priv->prepared_statement, column) != SQLITE_OK) {
    ephy_sqlite_connection_get_error (self->priv->connection, error);
    return FALSE;
  }

  return TRUE;
}

gboolean
ephy_sqlite_statement_bind_boolean (EphySQLiteStatement *self, int column, gboolean value, GError **error)
{
  if (sqlite3_bind_int (self->priv->prepared_statement, column + 1, value ? 1 : 0) != SQLITE_OK) {
    ephy_sqlite_connection_get_error (self->priv->connection, error);
    return FALSE;
  }

  return TRUE;
}

gboolean
ephy_sqlite_statement_bind_int (EphySQLiteStatement *self, int column, int value, GError **error)
{
  if (sqlite3_bind_int (self->priv->prepared_statement, column + 1, value) != SQLITE_OK) {
    ephy_sqlite_connection_get_error (self->priv->connection, error);
    return FALSE;
  }

  return TRUE;
}

gboolean
ephy_sqlite_statement_bind_double (EphySQLiteStatement *self, int column, double value, GError **error)
{
  if (sqlite3_bind_double (self->priv->prepared_statement, column + 1, value) != SQLITE_OK) {
    ephy_sqlite_connection_get_error (self->priv->connection, error);
    return FALSE;
  }

  return TRUE;
}

gboolean
ephy_sqlite_statement_bind_string (EphySQLiteStatement *self, int column, const char *value, GError **error)
{
  if (sqlite3_bind_text (self->priv->prepared_statement, column + 1, value, -1, SQLITE_TRANSIENT) != SQLITE_OK) {
    ephy_sqlite_connection_get_error (self->priv->connection, error);
    return FALSE;
  }

  return TRUE;
}

gboolean
ephy_sqlite_statement_bind_blob (EphySQLiteStatement *self, int column, const void *value, int length, GError **error)
{
  if (sqlite3_bind_blob (self->priv->prepared_statement, column + 1, value, length, SQLITE_TRANSIENT) != SQLITE_OK) {
    ephy_sqlite_connection_get_error (self->priv->connection, error);
    return FALSE;
  }
  return TRUE;
}

gboolean
ephy_sqlite_statement_step (EphySQLiteStatement *self, GError **error)
{
  int error_code = sqlite3_step (self->priv->prepared_statement);
  if (error_code != SQLITE_OK && error_code != SQLITE_ROW && error_code != SQLITE_DONE) {
    ephy_sqlite_connection_get_error (self->priv->connection, error);
  }

  return error_code == SQLITE_ROW;
}

void
ephy_sqlite_statement_reset (EphySQLiteStatement *self)
{
  sqlite3_reset (self->priv->prepared_statement);
}

int
ephy_sqlite_statement_get_column_count (EphySQLiteStatement *self)
{
  return sqlite3_column_count (self->priv->prepared_statement);
}

EphySQLiteColumnType
ephy_sqlite_statement_get_column_type (EphySQLiteStatement *self, int column)
{
  int column_type = sqlite3_column_type (self->priv->prepared_statement, column);
  switch (column_type) {
    case SQLITE_INTEGER:
      return EPHY_SQLITE_COLUMN_TYPE_INT;
    case SQLITE_FLOAT:
      return EPHY_SQLITE_COLUMN_TYPE_FLOAT;
    case SQLITE_TEXT:
      return EPHY_SQLITE_COLUMN_TYPE_STRING;
    case SQLITE_BLOB:
      return EPHY_SQLITE_COLUMN_TYPE_BLOB;
    case SQLITE_NULL:
    default:
      return EPHY_SQLITE_COLUMN_TYPE_NULL;
  }
}

int
ephy_sqlite_statement_get_column_size (EphySQLiteStatement *self, int column)
{
  return sqlite3_column_bytes (self->priv->prepared_statement, column);
}

int
ephy_sqlite_statement_get_column_as_boolean (EphySQLiteStatement *self, int column)
{
  return ephy_sqlite_statement_get_column_as_int (self, column);
}

int
ephy_sqlite_statement_get_column_as_int (EphySQLiteStatement *self, int column)
{
  return sqlite3_column_int (self->priv->prepared_statement, column);
}

double
ephy_sqlite_statement_get_column_as_double (EphySQLiteStatement *self, int column)
{
  return sqlite3_column_double (self->priv->prepared_statement, column);
}

const char*
ephy_sqlite_statement_get_column_as_string (EphySQLiteStatement *self, int column)
{
  return (const char*) sqlite3_column_text (self->priv->prepared_statement, column);
}

const void*
ephy_sqlite_statement_get_column_as_blob (EphySQLiteStatement *self, int column)
{
  return sqlite3_column_blob (self->priv->prepared_statement, column);
}

char *
ephy_sqlite_create_match_pattern (const char *match_string)
{
  char *string, *pattern;

  string = g_strndup (match_string, EPHY_SQLITE_LIMIT_LIKE_PATTERN_LENGTH - 2);
  pattern = g_strdup_printf ("%%%s%%", string);
  g_free (string);

  return pattern;
}
