1 files changed, 118 insertions, 0 deletions
diff --git a/divesite.c b/divesite.c
new file mode 100644
index 000000000..4f236017f
--- /dev/null
+++ b/divesite.c
@@ -0,0 +1,118 @@
+/* divesite.c */
+#include "divesite.h"
+#include "dive.h"
+
+struct dive_site_table dive_site_table;
+
+/* there could be multiple sites of the same name - return the first one */
+uint32_t get_dive_site_uuid_by_name(const char *name, struct dive_site **dsp)
+{
+	int i;
+	struct dive_site *ds;
+	for_each_dive_site (i, ds) {
+		if (same_string(ds->name, name)) {
+			if (dsp)
+				*dsp = ds;
+			return ds->uuid;
+		}
+	}
+	return 0;
+}
+
+/* there could be multiple sites at the same GPS fix - return the first one */
+uint32_t get_dive_site_uuid_by_gps(degrees_t latitude, degrees_t longitude, struct dive_site **dsp)
+{
+	int i;
+	struct dive_site *ds;
+	for_each_dive_site (i, ds) {
+		if (ds->latitude.udeg == latitude.udeg && ds->longitude.udeg == longitude.udeg) {
+			if (dsp)
+				*dsp = ds;
+			return ds->uuid;
+		}
+	}
+	return 0;
+}
+
+/* try to create a uniqe ID - fingers crossed */
+static uint32_t dive_site_getUniqId()
+{
+	uint32_t id = 0;
+
+	while (id == 0 || get_dive_site_by_uuid(id))
+		id = random() + random();
+
+	return id;
+}
+
+struct dive_site *alloc_dive_site()
+{
+	int nr = dive_site_table.nr, allocated = dive_site_table.allocated;
+	struct dive_site **sites = dive_site_table.dive_sites;
+
+	if (nr >= allocated) {
+		allocated = (nr + 32) * 3 / 2;
+		sites = realloc(sites, allocated * sizeof(struct dive_site *));
+		if (!sites)
+			exit(1);
+		dive_site_table.dive_sites = sites;
+		dive_site_table.allocated = allocated;
+	}
+	struct dive_site *ds = calloc(1, sizeof(*ds));
+	if (!ds)
+		exit(1);
+	sites[nr] = ds;
+	dive_site_table.nr = nr + 1;
+	ds->uuid = dive_site_getUniqId();
+	return ds;
+}
+
+void delete_dive_site(uint32_t id)
+{
+	int nr = dive_site_table.nr;
+	for (int i = 0; i < nr; i++) {
+		struct dive_site *ds = get_dive_site(i);
+		if (ds->uuid == id) {
+			free(ds->name);
+			free(ds->notes);
+			free(ds);
+			if (nr - 1 > i)
+				memmove(&dive_site_table.dive_sites[i],
+					&dive_site_table.dive_sites[i+1],
+					(nr - 1 - i) * sizeof(dive_site_table.dive_sites[0]));
+			dive_site_table.nr = nr - 1;
+			break;
+		}
+	}
+}
+
+/* allocate a new site and add it to the table */
+uint32_t create_dive_site(const char *name)
+{
+	struct dive_site *ds = alloc_dive_site();
+	ds->name = copy_string(name);
+
+	return ds->uuid;
+}
+
+/* same as before, but with GPS data */
+uint32_t create_dive_site_with_gps(const char *name, degrees_t latitude, degrees_t longitude)
+{
+	struct dive_site *ds = alloc_dive_site();
+	ds->uuid = dive_site_getUniqId();
+	ds->name = copy_string(name);
+	ds->latitude = latitude;
+	ds->longitude = longitude;
+
+	return ds->uuid;
+}
+
+/* a uuid is always present - but if all the other fields are empty, the dive site is pointless */
+bool dive_site_is_empty(struct dive_site *ds)
+{
+	return same_string(ds->name, "") &&
+	       same_string(ds->description, "") &&
+	       same_string(ds->notes, "") &&
+	       ds->latitude.udeg == 0 &&
+	       ds->longitude.udeg == 0;
+}