emergency-call-types: Add emergency numbers from service provider db

This scales better than using a built in array.

Closes: https://gitlab.gnome.org/GNOME/calls/-/issues/714
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Part-of: <https://gitlab.gnome.org/GNOME/calls/-/merge_requests/790>

src/calls-emergency-call-types.c

@@ -9,6 +9,7 @@
 #define G_LOG_DOMAIN "CallsEmergencyCallType"
 
 #include "calls-emergency-call-types.h"
+#include "calls-service-providers.h"
 
 #include <glib/gi18n.h>
 
@@ -280,17 +281,29 @@ calls_emergency_call_country_data_new (const char *country)
 
 
 void
-calls_emergency_call_types_init (void)
+calls_emergency_call_types_init (const char *dbfilename)
 {
   if (g_once_init_enter (&by_mcc)) {
-    GHashTable *table = g_hash_table_new_full (g_str_hash,
-                                               g_str_equal,
-                                               NULL,
-                                               (GDestroyNotify) calls_emergency_call_country_data_free);
+    g_autoptr (GError) err = NULL;
+    GHashTable *table = NULL;
+
+    table = calls_service_providers_get_emergency_info_sync (dbfilename, &err);
+    if (!table) {
+      g_warning ("Failed to load emergency number database: '%s'", err->message);
+      table = g_hash_table_new_full (g_str_hash,
+                                     g_str_equal,
+                                     NULL,
+                                     (GDestroyNotify) calls_emergency_call_country_data_free);
+    }
 
     for (int i = 0; i < G_N_ELEMENTS (emergency_number_types); i++) {
       CallsEmergencyCallCountryData *country;
+      const char *country_code = emergency_number_types[i].country_code;
 
+      if (g_hash_table_lookup (table, country_code))
+        continue;
+
+      /* Add a built in fallback */
       country = calls_emergency_call_country_data_new (emergency_number_types[i].country_code);
       for (int k = 0; k < G_N_ELEMENTS (emergency_number_types[i].numbers); k++) {
         CallsEmergencyNumber *number;

src/calls-emergency-call-types.h

@@ -50,7 +50,7 @@ typedef struct {
 CallsEmergencyCallCountryData *calls_emergency_call_country_data_new  (const char *country);
 void                           calls_emergency_call_country_data_free (CallsEmergencyCallCountryData *country_data);
 
-void  calls_emergency_call_types_init (void);
+void  calls_emergency_call_types_init (const char *dbfilename);
 void  calls_emergency_call_types_destroy (void);
 char *calls_emergency_call_type_get_name (const char *number, const char *country_code);
 GStrv calls_emergency_call_types_get_numbers_by_country_code (const char *country_code);

src/calls-emergency-calls-manager.c

@@ -8,6 +8,8 @@
 
 #define G_LOG_DOMAIN "CallsEmergencyCallsManager"
 
+#include "calls-config.h"
+
 #include "calls-emergency-calls-manager.h"
 #include "calls-emergency-call-types.h"
 #include "calls-origin.h"
@@ -231,7 +233,7 @@ calls_emergency_calls_manager_init (CallsEmergencyCallsManager *self)
 {
   CallsManager *manager = calls_manager_get_default ();
 
-  calls_emergency_call_types_init ();
+  calls_emergency_call_types_init (CALLS_EMERGENCY_INFO_DATABASE);
 
   self->origins = g_object_ref (calls_manager_get_origins (manager));
   g_signal_connect_object (self->origins,

tests/test-emergency-call-types.c

@@ -40,6 +40,11 @@ test_lookup (void)
   /* Numbers that doesn't match */
   lookup = calls_emergency_call_type_get_name ("123456", "DE");
   g_assert_null (lookup);
+
+  /* Lookup from service provider db */
+  lookup = calls_emergency_call_type_get_name ("112", "yy");
+  g_assert_cmpstr (lookup, ==, "Police, Ambulance, Fire Brigade");
+  g_free (lookup);
 }
 
 int
@@ -49,7 +54,7 @@ main (int   argc,
   gint ret;
   g_test_init (&argc, &argv, NULL);
 
-  calls_emergency_call_types_init ();
+  calls_emergency_call_types_init (TEST_DATABASE);
 
   g_test_add_func ("/Calls/EmergencyCallTypes/lookup", test_lookup);