#include "e_mod_main.h"

typedef struct _Plugin Plugin;

struct _Plugin
{
   Evry_Plugin base;

   Eina_List  *plugins;
};

static Eina_List *plugins = NULL;
static Evry_Type COLLECTION_PLUGIN;
static Plugin_Config plugin_config;

static Evry_Plugin *
_browse(Evry_Plugin *plugin, const Evry_Item *item)
{
   Evry_Plugin *inst;
   Evry_Plugin *pp;

   Plugin_Config *pc;

   if (!CHECK_TYPE(item, COLLECTION_PLUGIN))
     return NULL;

   if (item->plugin != plugin)
     return NULL;

   pc = item->data;
   pp = pc->plugin;

   if (pp->begin && (inst = pp->begin(pp, NULL)))
     {
        if (!strcmp(plugin->name, "Plugins"))
          inst->config = &plugin_config;
        else
          inst->config = pc;

        return inst;
     }

   return NULL;
}

static Evry_Item *
_add_item(Plugin *p, Plugin_Config *pc)
{
   Evry_Plugin *pp;
   Evry_Item *it = NULL;

   if (pc->enabled && (pp = evry_plugin_find(pc->name)))
     {
        pc->plugin = pp;

        GET_ITEM(itp, pp);
        it = EVRY_ITEM_NEW(Evry_Item, EVRY_PLUGIN(p), itp->label, NULL, NULL);
        if (itp->icon) it->icon = eina_stringshare_ref(itp->icon);
        it->icon_get = itp->icon_get;
        it->data = pc;
        it->browseable = EINA_TRUE;
        it->detail = eina_stringshare_ref(EVRY_ITEM(p)->label);
        p->plugins = eina_list_append(p->plugins, it);
     }
   return it;
}

static Evry_Plugin *
_begin(Evry_Plugin *plugin, const Evry_Item *item __UNUSED__)
{
   Plugin_Config *pc;
   Eina_List *l;
   Plugin *p;

   EVRY_PLUGIN_INSTANCE(p, plugin);

   EINA_LIST_FOREACH (plugin->config->plugins, l, pc)
     _add_item(p, pc);

   return EVRY_PLUGIN(p);
}

static Evry_Plugin *
_begin_all(Evry_Plugin *plugin, const Evry_Item *item __UNUSED__)
{
   Plugin_Config *pc;
   Eina_List *l;
   Plugin *p;

   EVRY_PLUGIN_INSTANCE(p, plugin);

   EINA_LIST_FOREACH (evry_conf->conf_subjects, l, pc)
     {
        if (!strcmp(pc->name, "All") ||
            !strcmp(pc->name, "Actions") ||
            !strcmp(pc->name, "Calculator") ||
            !strcmp(pc->name, "Plugins"))
          continue;

        _add_item(p, pc);
     }

   return EVRY_PLUGIN(p);
}

static void
_finish(Evry_Plugin *plugin)
{
   Evry_Item *it;

   GET_PLUGIN(p, plugin);

   EVRY_PLUGIN_ITEMS_CLEAR(p);

   EINA_LIST_FREE (p->plugins, it)
     EVRY_ITEM_FREE(it);

   E_FREE(p);
}

static int
_fetch(Evry_Plugin *plugin, const char *input)
{
   GET_PLUGIN(p, plugin);

   EVRY_PLUGIN_ITEMS_CLEAR(p);

   EVRY_PLUGIN_ITEMS_ADD(p, p->plugins, input, 1, 0);

   return EVRY_PLUGIN_HAS_ITEMS(p);
}

static Evry_Plugin *
_add_plugin(const char *name)
{
   Evry_Plugin *p;
   char path[4096];
   char title[4096];

   p = EVRY_PLUGIN_BASE(name, NULL, COLLECTION_PLUGIN,
                        _begin, _finish, _fetch);
   p->browse = &_browse;

   snprintf(path, sizeof(path), "launcher/everything-%s", p->name);

   snprintf(title, sizeof(title), "%s: %s", _("Everything Plugin"), p->base.label);

   e_configure_registry_item_params_add
     (path, 110, title, NULL, p->base.icon, evry_collection_conf_dialog, p->name);

   p->config_path = eina_stringshare_add(path);

   plugins = eina_list_append(plugins, p);

   return p;
}

Eina_Bool
evry_plug_collection_init(void)
{
   Evry_Plugin *p;
   Plugin_Config *pc;
   Eina_List *l;

   plugin_config.min_query = 0;
   plugin_config.top_level = EINA_TRUE;
   plugin_config.aggregate = EINA_FALSE;
   plugin_config.view_mode = VIEW_MODE_DETAIL;

   COLLECTION_PLUGIN = evry_type_register("COLLECTION_PLUGIN");

   p = _add_plugin(N_("Plugins"));
   p->begin = &_begin_all;
   EVRY_ITEM_ICON_SET(p, "preferences-plugin");

   if (evry_plugin_register(p, EVRY_PLUGIN_SUBJECT, 100))
     {
        p->config->aggregate = EINA_TRUE;
        p->config->top_level = EINA_TRUE;
        p->config->view_mode = VIEW_MODE_THUMB;
     }

   EINA_LIST_FOREACH (evry_conf->collections, l, pc)
     {
        p = _add_plugin(pc->name);
        EVRY_ITEM_ICON_SET(p, "start-here");
        p->config = pc;
        pc->plugin = p;

        if (evry_plugin_register(p, EVRY_PLUGIN_SUBJECT, 1))
          p->config->aggregate = EINA_FALSE;
     }

   return EINA_TRUE;
}

void
evry_plug_collection_shutdown(void)
{
   Evry_Plugin *p;

   EINA_LIST_FREE (plugins, p)
     {
        if (p->config_path)
          {
             e_configure_registry_item_del(p->config_path);
             eina_stringshare_del(p->config_path);
          }

        EVRY_PLUGIN_FREE(p);
     }
}