/*

 * Copyright (c) 2016 Justin Zhu

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to

 * deal in the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

 * IN THE SOFTWARE.

 */

#include "h2o.h"

#include "h2o/configurator.h"

struct throttle_resp_config_vars_t {

    int on;

};

struct throttle_resp_configurator_t {

    h2o_configurator_t super;

    struct throttle_resp_config_vars_t *vars, _vars_stack[H2O_CONFIGURATOR_NUM_LEVELS + 1];

};

static int on_config_throttle_resp(h2o_configurator_command_t *cmd, h2o_configurator_context_t *ctx, yoml_t *node)

{

    struct throttle_resp_configurator_t *self = (void *)cmd->configurator;

    if ((self->vars->on = (int)h2o_configurator_get_one_of(cmd, node, "OFF,ON")) == -1)

        return -1;

    return 0;

}

static int on_config_enter(h2o_configurator_t *configurator, h2o_configurator_context_t *ctx, yoml_t *node)

{

    struct throttle_resp_configurator_t *self = (void *)configurator;

    ++self->vars;

    self->vars[0] = self->vars[-1];

    return 0;

}

static int on_config_exit(h2o_configurator_t *configurator, h2o_configurator_context_t *ctx, yoml_t *node)

{

    struct throttle_resp_configurator_t *self = (void *)configurator;

    if (ctx->pathconf != NULL && !h2o_configurator_at_extension_level(ctx) && self->vars->on)

        h2o_throttle_resp_register(ctx->pathconf);

    --self->vars;

    return 0;

}

void h2o_throttle_resp_register_configurator(h2o_globalconf_t *conf)

{

    struct throttle_resp_configurator_t *c = (void *)h2o_configurator_create(conf, sizeof(*c));

    c->super.enter = on_config_enter;

    c->super.exit = on_config_exit;

    h2o_configurator_define_command(&c->super, "throttle-response",

                                    H2O_CONFIGURATOR_FLAG_GLOBAL | H2O_CONFIGURATOR_FLAG_HOST | H2O_CONFIGURATOR_FLAG_PATH |

                                        H2O_CONFIGURATOR_FLAG_EXPECT_SCALAR,

                                    on_config_throttle_resp);

    c->vars = c->_vars_stack;

}