[Expeditions] Refactor expedition caching (#1315)

Add common expedition base class

Use repository for zone and world expedition caching

World now stores members and leader as Member objects instead of ids

This improves readability of the caching methods and lets world cache
expedition dzs and members like zone. World also now caches expeditions
as unique_ptr which will be necessary for future dz callback lambdas
that capture 'this' so addresses don't change on cache vector resizes.

common/repositories/expeditions_repository.h

@@ -65,6 +65,100 @@ public:
 
 	// Custom extended repository methods here
 
+	struct ExpeditionWithLeader
+	{
+		uint32_t    id;
+		std::string uuid;
+		uint32_t    dynamic_zone_id;
+		std::string expedition_name;
+		uint32_t    min_players;
+		uint32_t    max_players;
+		int         add_replay_on_join;
+		int         is_locked;
+		uint32_t    leader_id;
+		std::string leader_name;
+	};
+
+	static std::string SelectExpeditionsJoinLeader()
+	{
+		return std::string(SQL(
+			SELECT
+				expeditions.id,
+				expeditions.uuid,
+				expeditions.dynamic_zone_id,
+				expeditions.expedition_name,
+				expeditions.min_players,
+				expeditions.max_players,
+				expeditions.add_replay_on_join,
+				expeditions.is_locked,
+				expeditions.leader_id,
+				character_data.name leader_name
+			FROM expeditions
+				INNER JOIN character_data ON expeditions.leader_id = character_data.id
+		));
+	}
+
+	static ExpeditionWithLeader FillExpeditionWithLeaderFromRow(MySQLRequestRow& row)
+	{
+		ExpeditionWithLeader entry{};
+
+		int col = 0;
+		entry.id                 = strtoul(row[col++], nullptr, 10);
+		entry.uuid               = row[col++];
+		entry.dynamic_zone_id    = strtoul(row[col++], nullptr, 10);
+		entry.expedition_name    = row[col++];
+		entry.min_players        = strtoul(row[col++], nullptr, 10);
+		entry.max_players        = strtoul(row[col++], nullptr, 10);
+		entry.add_replay_on_join = strtoul(row[col++], nullptr, 10);
+		entry.is_locked          = strtoul(row[col++], nullptr, 10);
+		entry.leader_id          = strtoul(row[col++], nullptr, 10);
+		entry.leader_name        = row[col++];
+
+		return entry;
+	}
+
+	static std::vector<ExpeditionWithLeader> GetAllWithLeaderName(Database& db)
+	{
+		std::vector<ExpeditionWithLeader> all_entries;
+
+		auto results = db.QueryDatabase(fmt::format(
+			"{} ORDER BY expeditions.id;",
+			SelectExpeditionsJoinLeader()
+		));
+
+		if (results.Success())
+		{
+			all_entries.reserve(results.RowCount());
+
+			for (auto row = results.begin(); row != results.end(); ++row)
+			{
+				ExpeditionWithLeader entry = FillExpeditionWithLeaderFromRow(row);
+				all_entries.emplace_back(std::move(entry));
+			}
+		}
+
+		return all_entries;
+	}
+
+	static ExpeditionWithLeader GetWithLeaderName(Database& db, uint32_t expedition_id)
+	{
+		ExpeditionWithLeader entry{};
+
+		auto results = db.QueryDatabase(fmt::format(
+			"{} WHERE expeditions.id = {};",
+			SelectExpeditionsJoinLeader(),
+			expedition_id
+		));
+
+		if (results.Success() && results.RowCount() > 0)
+		{
+			auto row = results.begin();
+			entry = FillExpeditionWithLeaderFromRow(row);
+		}
+
+		return entry;
+	}
+
 	struct CharacterExpedition
 	{
 		uint32_t    id;