#include "e.h"
#include "e_mod_main.h"

#ifdef __FreeBSD__
#include <sys/types.h>
#include <sys/sysctl.h>
#endif

#ifdef __OpenBSD__
#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/sensors.h>
#endif


/* gadcon requirements */
static E_Gadcon_Client *_gc_init(E_Gadcon *gc, const char *name, const char *id, const char *style);
static void _gc_shutdown(E_Gadcon_Client *gcc);
static void _gc_orient(E_Gadcon_Client *gcc, E_Gadcon_Orient orient);
static const char *_gc_label(const E_Gadcon_Client_Class *client_class);
static Evas_Object *_gc_icon(const E_Gadcon_Client_Class *client_class, Evas *evas);
static const char *_gc_id_new(const E_Gadcon_Client_Class *client_class);
/* and actually define the gadcon class that this module provides (just 1) */
static const E_Gadcon_Client_Class _gadcon_class =
{
   GADCON_CLIENT_CLASS_VERSION, "temperature",
     {
        _gc_init, _gc_shutdown, _gc_orient, _gc_label, _gc_icon, _gc_id_new, NULL,
        e_gadcon_site_is_not_toolbar
     },
   E_GADCON_CLIENT_STYLE_PLAIN
};

/* actual module specifics */

static void _temperature_face_cb_mouse_down(void *data, Evas *e, Evas_Object *obj, void *event_info);

static void _temperature_face_cb_menu_configure(void *data, E_Menu *m, E_Menu_Item *mi);

static Eina_Bool _temperature_face_shutdown(const Eina_Hash *hash EINA_UNUSED, const void *key EINA_UNUSED, void *hdata, void *fdata EINA_UNUSED);
static Eina_Bool _temperature_face_id_max(const Eina_Hash *hash EINA_UNUSED, const void *key, void *hdata EINA_UNUSED, void *fdata);

static E_Config_DD *conf_edd = NULL;
static E_Config_DD *conf_face_edd = NULL;

static int uuid = 0;

static Config *temperature_config = NULL;

static E_Gadcon_Client *
_gc_init(E_Gadcon *gc, const char *name, const char *id, const char *style)
{
   Evas_Object *o;
   E_Gadcon_Client *gcc;
   Config_Face *inst;

   inst = eina_hash_find(temperature_config->faces, id);
   if (!inst)
     {
        inst = E_NEW(Config_Face, 1);
        inst->id = eina_stringshare_add(id);
        inst->poll_interval = 128;
        inst->low = 30;
        inst->high = 80;
        inst->sensor_type = SENSOR_TYPE_NONE;
        inst->sensor_name = NULL;
        inst->units = CELCIUS;
#ifdef HAVE_EEZE
        inst->backend = UDEV;
#endif
        if (!temperature_config->faces)
          temperature_config->faces = eina_hash_string_superfast_new(NULL);
        eina_hash_direct_add(temperature_config->faces, inst->id, inst);
     }
   if (!inst->id) inst->id = eina_stringshare_add(id);
   E_CONFIG_LIMIT(inst->poll_interval, 1, 1024);
   E_CONFIG_LIMIT(inst->low, 0, 100);
   E_CONFIG_LIMIT(inst->high, 0, 220);
   E_CONFIG_LIMIT(inst->units, CELCIUS, FAHRENHEIT);
#ifdef HAVE_EEZE
   E_CONFIG_LIMIT(inst->backend, TEMPGET, UDEV);
#endif

   o = edje_object_add(gc->evas);
   e_theme_edje_object_set(o, "base/theme/modules/temperature",
			   "e/modules/temperature/main");

   gcc = e_gadcon_client_new(gc, name, id, style, o);
   gcc->data = inst;

   inst->gcc = gcc;
   inst->o_temp = o;
   inst->module = temperature_config->module;
   inst->have_temp = EINA_FALSE;
#ifdef HAVE_EEZE
   if (inst->backend == TEMPGET)
     {
        inst->tempget_data_handler = 
          ecore_event_handler_add(ECORE_EXE_EVENT_DATA,
				  _temperature_cb_exe_data, inst);
        inst->tempget_del_handler = 
          ecore_event_handler_add(ECORE_EXE_EVENT_DEL,
				  _temperature_cb_exe_del, inst);
     }
   else
     {
        eeze_init();
        inst->temp_poller = 
	  ecore_poller_add(ECORE_POLLER_CORE, inst->poll_interval, 
			   temperature_udev_update_poll, inst);
        temperature_udev_update(inst);
     }
#else 
   inst->tempget_data_handler = 
     ecore_event_handler_add(ECORE_EXE_EVENT_DATA,
			     _temperature_cb_exe_data, inst);
   inst->tempget_del_handler = 
     ecore_event_handler_add(ECORE_EXE_EVENT_DEL,
			     _temperature_cb_exe_del, inst);
#endif

   temperature_face_update_config(inst);

   evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_DOWN,
				  _temperature_face_cb_mouse_down, inst);
   return gcc;
}

static void
_gc_shutdown(E_Gadcon_Client *gcc)
{
   Config_Face *inst;

   inst = gcc->data;

   if (inst->tempget_exe)
     {
	ecore_exe_terminate(inst->tempget_exe);
	ecore_exe_free(inst->tempget_exe);
	inst->tempget_exe = NULL;
     }
   if (inst->tempget_data_handler)
     {
        ecore_event_handler_del(inst->tempget_data_handler);
        inst->tempget_data_handler = NULL;
     }
   if (inst->tempget_del_handler)
     {
	ecore_event_handler_del(inst->tempget_del_handler);
	inst->tempget_del_handler = NULL;
     }
#ifdef HAVE_EEEZ_UDEV
   if (inst->temp_poller)
     ecore_poller_del(inst->temp_poller);
   eeze_shutdown();
#endif
   if (inst->o_temp) evas_object_del(inst->o_temp);
   inst->o_temp = NULL;
   if (inst->config_dialog) e_object_del(E_OBJECT(inst->config_dialog));
   inst->config_dialog = NULL;
}

static void
_gc_orient(E_Gadcon_Client *gcc, E_Gadcon_Orient orient EINA_UNUSED)
{
   e_gadcon_client_aspect_set(gcc, 16, 16);
   e_gadcon_client_min_size_set(gcc, 16, 16);
}

static const char *
_gc_label(const E_Gadcon_Client_Class *client_class EINA_UNUSED)
{
   return _("Temperature");
}

static Evas_Object *
_gc_icon(const E_Gadcon_Client_Class *client_class EINA_UNUSED, Evas *evas)
{
   Evas_Object *o;
   char buf[PATH_MAX];

   o = edje_object_add(evas);
   snprintf(buf, sizeof(buf), "%s/e-module-temperature.edj",
	    e_module_dir_get(temperature_config->module));
   edje_object_file_set(o, buf, "icon");
   return o;
}

static const char *
_gc_id_new(const E_Gadcon_Client_Class *client_class EINA_UNUSED)
{
   Config_Face *inst;
   char id[128];

   snprintf(id, sizeof(id), "%s.%d", _gadcon_class.name, ++uuid);

   inst = E_NEW(Config_Face, 1);
   inst->id = eina_stringshare_add(id);
   inst->poll_interval = 128;
   inst->low = 30;
   inst->high = 80;
   inst->sensor_type = SENSOR_TYPE_NONE;
   inst->sensor_name = NULL;
   inst->units = CELCIUS;
#ifdef HAVE_EEZE
   inst->backend = TEMPGET;
#endif
   if (!temperature_config->faces)
     temperature_config->faces = eina_hash_string_superfast_new(NULL);
   eina_hash_direct_add(temperature_config->faces, inst->id, inst);
   return inst->id;
}

static void
_temperature_face_cb_mouse_down(void *data, Evas *e EINA_UNUSED, Evas_Object *obj EINA_UNUSED, void *event_info)
{
   Config_Face *inst;
   Evas_Event_Mouse_Down *ev;

   inst = data;
   ev = event_info;
   if (ev->button == 3)
     {
        E_Menu *m;
        E_Menu_Item *mi;
        int cx, cy;

        m = e_menu_new();
        mi = e_menu_item_new(m);
        e_menu_item_label_set(mi, _("Settings"));
        e_util_menu_item_theme_icon_set(mi, "configure");
        e_menu_item_callback_set(mi, _temperature_face_cb_menu_configure, inst);

        m = e_gadcon_client_util_menu_items_append(inst->gcc, m, 0);

        e_gadcon_canvas_zone_geometry_get(inst->gcc->gadcon, &cx, &cy, NULL, NULL);
        e_menu_activate_mouse(m, e_zone_current_get(),
                              cx + ev->output.x, cy + ev->output.y, 1, 1,
                              E_MENU_POP_DIRECTION_AUTO, ev->timestamp);
        evas_event_feed_mouse_up(inst->gcc->gadcon->evas, ev->button,
                                 EVAS_BUTTON_NONE, ev->timestamp, NULL);
     }
}

void
_temperature_face_level_set(Config_Face *inst, double level)
{
   Edje_Message_Float msg;

   if (level < 0.0) level = 0.0;
   else if (level > 1.0) level = 1.0;
   msg.val = level;
   edje_object_message_send(inst->o_temp, EDJE_MESSAGE_FLOAT, 1, &msg);
}

static void
_temperature_face_cb_menu_configure(void *data, E_Menu *m EINA_UNUSED, E_Menu_Item *mi EINA_UNUSED)
{
   Config_Face *inst;

   inst = data;
   if (inst->config_dialog) return;
   config_temperature_module(inst);
}

static Eina_Bool
_temperature_face_shutdown(const Eina_Hash *hash EINA_UNUSED, const void *key EINA_UNUSED, void *hdata, void *fdata EINA_UNUSED)
{
   Config_Face *inst;

   inst = hdata;
   if (inst->sensor_name) eina_stringshare_del(inst->sensor_name);
   if (inst->id) eina_stringshare_del(inst->id);
#ifdef HAVE_EEZE
   if (inst->tempdevs)
     {
        const char *s;

        EINA_LIST_FREE(inst->tempdevs, s)
          eina_stringshare_del(s);
     }
#endif
   E_FREE(inst);
   return EINA_TRUE;
}

static Eina_Bool
_temperature_face_id_max(const Eina_Hash *hash EINA_UNUSED, const void *key, void *hdata EINA_UNUSED, void *fdata)
{
   const char *p;
   int *max;
   int num = -1;

   max = fdata;
   p = strrchr(key, '.');
   if (p) num = atoi(p + 1);
   if (num > *max) *max = num;
   return EINA_TRUE;
}

void 
temperature_face_update_config(Config_Face *inst)
{
   char buf[8192];

   if (inst->tempget_exe)
     {
        ecore_exe_terminate(inst->tempget_exe);
        ecore_exe_free(inst->tempget_exe);
        inst->tempget_exe = NULL;
     }

#ifdef HAVE_EEZE
   if (inst->backend == TEMPGET)
     {
        if (inst->temp_poller)
          {
             ecore_poller_del(inst->temp_poller);
             inst->temp_poller = NULL;
          }
	if (!inst->tempget_exe) 
	  {
	     snprintf(buf, sizeof(buf),
		      "exec %s/%s/tempget %i \"%s\" %i", 
		      e_module_dir_get(temperature_config->module), MODULE_ARCH, 
		      inst->sensor_type,
		      (inst->sensor_name ? inst->sensor_name : "(null)"),
		      inst->poll_interval);
	     inst->tempget_exe = 
	       ecore_exe_pipe_run(buf, ECORE_EXE_PIPE_READ | 
				  ECORE_EXE_PIPE_READ_LINE_BUFFERED |
				  ECORE_EXE_NOT_LEADER, inst);
	  }
     }
   else if (inst->backend == UDEV)
     {
	/*avoid creating a new poller if possible*/
        if (inst->temp_poller)
          ecore_poller_poller_interval_set(inst->temp_poller, 
					   inst->poll_interval);
        else 
	  {
	     inst->temp_poller = 
	       ecore_poller_add(ECORE_POLLER_CORE, inst->poll_interval, 
				temperature_udev_update_poll, inst);
	  }
     }
#else
   if (!inst->tempget_exe) 
     {
	snprintf(buf, sizeof(buf),
		 "%s/%s/tempget %i \"%s\" %i", 
		 e_module_dir_get(temperature_config->module), MODULE_ARCH, 
		 inst->sensor_type,
		 (inst->sensor_name ? inst->sensor_name : "(null)"),
		 inst->poll_interval);
	inst->tempget_exe = 
	  ecore_exe_pipe_run(buf, ECORE_EXE_PIPE_READ | 
			     ECORE_EXE_PIPE_READ_LINE_BUFFERED |
			     ECORE_EXE_NOT_LEADER, inst);
     }
#endif
}

Eina_List *
temperature_get_bus_files(const char *bus)
{
   Eina_List *result;
   Eina_List *therms;
   char path[PATH_MAX];
   char busdir[PATH_MAX];
   char *name;

   result = NULL;

   snprintf(busdir, sizeof(busdir), "/sys/bus/%s/devices", bus);
   /* Look through all the devices for the given bus. */
   therms = ecore_file_ls(busdir);

   EINA_LIST_FREE(therms, name)
     {
        Eina_List *files;
        char *file;

        /* Search each device for temp*_input, these should be
         * temperature devices. */
        snprintf(path, sizeof(path), "%s/%s", busdir, name);
        files = ecore_file_ls(path);
        EINA_LIST_FREE(files, file)
          {
             if ((!strncmp("temp", file, 4)) &&
                 (!strcmp("_input", &file[strlen(file) - 6])))
               {
                  char *f;

                  snprintf(path, sizeof(path),
                           "%s/%s/%s", busdir, name, file);
                  f = strdup(path);
                  if (f) result = eina_list_append(result, f);
               }
             free(file);
          }
        free(name);
     }
   return result;
}

/* module setup */
EAPI E_Module_Api e_modapi = 
{
   E_MODULE_API_VERSION,
     "Temperature"
};

EAPI void *
e_modapi_init(E_Module *m)
{
   conf_face_edd = E_CONFIG_DD_NEW("Temperature_Config_Face", Config_Face);
#undef T
#undef D
#define T Config_Face
#define D conf_face_edd
   E_CONFIG_VAL(D, T, id, STR);
   E_CONFIG_VAL(D, T, poll_interval, INT);
   E_CONFIG_VAL(D, T, low, INT);
   E_CONFIG_VAL(D, T, high, INT);
   E_CONFIG_VAL(D, T, sensor_type, INT);
#ifdef HAVE_EEZE
   E_CONFIG_VAL(D, T, backend, INT);
#endif
   E_CONFIG_VAL(D, T, sensor_name, STR);
   E_CONFIG_VAL(D, T, units, INT);

   conf_edd = E_CONFIG_DD_NEW("Temperature_Config", Config);
#undef T
#undef D
#define T Config
#define D conf_edd
   E_CONFIG_HASH(D, T, faces, conf_face_edd);

   temperature_config = e_config_domain_load("module.temperature", conf_edd);
   if (!temperature_config)
     temperature_config = E_NEW(Config, 1);
   else if (temperature_config->faces)
     eina_hash_foreach(temperature_config->faces, _temperature_face_id_max, &uuid);
   temperature_config->module = m;

   e_gadcon_provider_register(&_gadcon_class);
   return m;
}

EAPI int
e_modapi_shutdown(E_Module *m EINA_UNUSED)
{
   e_gadcon_provider_unregister(&_gadcon_class);
   if (temperature_config->faces)
     eina_hash_foreach(temperature_config->faces, _temperature_face_shutdown, NULL);
   eina_hash_free(temperature_config->faces);
   free(temperature_config);
   temperature_config = NULL;
   E_CONFIG_DD_FREE(conf_face_edd);
   E_CONFIG_DD_FREE(conf_edd);
   return 1;
}

EAPI int
e_modapi_save(E_Module *m EINA_UNUSED)
{
   e_config_domain_save("module.temperature", conf_edd, temperature_config);
   return 1;
}