9 files changed, 100 insertions, 3 deletions

diff --git a/api/src/main/java/market/guess/api/AccountContext.java b/api/src/main/java/market/guess/api/AccountContext.java
new file mode 100644
index 0000000..8d880aa
--- /dev/null
+++ b/api/src/main/java/market/guess/api/AccountContext.java
@@ -0,0 +1,10 @@
+package market.guess.api;
+
+import java.util.List;
+import market.guess.model.ledger.LedgerDTO;
+
+public interface AccountContext {
+  Result<List<LedgerDTO>> getAllAccounts();
+
+  Result<LedgerDTO> getAccount(String owner);
+}
diff --git a/api/src/main/java/market/guess/api/CatalogContext.java b/api/src/main/java/market/guess/api/CatalogContext.java
index 413a81c..ca75409 100644
--- a/api/src/main/java/market/guess/api/CatalogContext.java
+++ b/api/src/main/java/market/guess/api/CatalogContext.java
@@ -2,8 +2,11 @@ package market.guess.api;
 
 import java.nio.file.Path;
 import java.util.List;
+import market.guess.model.event.CommissionTiming;
+import market.guess.model.event.CreateEventRequest;
 import market.guess.model.event.EventDetailDTO;
 import market.guess.model.event.EventSummaryDTO;
+import market.guess.model.event.MechanismType;
 
 public interface CatalogContext {
   Result<LoadResult> loadEvents(Path path);
@@ -15,4 +18,29 @@ public interface CatalogContext {
   Result<Void> saveState(Path path);
 
   Result<LoadResult> restoreState(Path path);
+
+  default Result<EventDetailDTO> createEvent(CreateEventRequest request) {
+    if (request == null) {
+      return Result.error("Request cannot be null");
+    }
+    return createEvent(
+        request.name(),
+        request.description(),
+        request.mechanism(),
+        request.commissionPercent(),
+        request.commissionTiming(),
+        request.mmUserName());
+  }
+
+  default Result<EventDetailDTO> createEvent(
+      String name,
+      String description,
+      MechanismType mechanism,
+      int commissionPercent,
+      CommissionTiming commissionTiming,
+      String mmUserName) {
+    return Result.error("Not implemented");
+  }
+
+  Result<EventDetailDTO> openEvent(String eventKey);
 }
diff --git a/api/src/main/java/market/guess/api/GuessMarketContext.java b/api/src/main/java/market/guess/api/GuessMarketContext.java
index 4edb437..0182ac3 100644
--- a/api/src/main/java/market/guess/api/GuessMarketContext.java
+++ b/api/src/main/java/market/guess/api/GuessMarketContext.java
@@ -5,8 +5,18 @@ import market.guess.model.event.EventDetailDTO;
 import market.guess.model.market.PurchaseReceiptDTO;
 
 public interface GuessMarketContext {
+  default Result<PurchaseReceiptDTO> placeOrder(
+      String userName, String eventKey, String optionKey, BigDecimal price, long quantity) {
+    return placeOrder(userName, eventKey, optionKey, "BUY", price, quantity);
+  }
+
   Result<PurchaseReceiptDTO> placeOrder(
-      String userName, String eventKey, String optionKey, BigDecimal price, long quantity);
+      String userName,
+      String eventKey,
+      String optionKey,
+      String side,
+      BigDecimal price,
+      long quantity);
 
   Result<EventDetailDTO> settleEvent(String userName, String eventKey, String winningOptionKey);
 }
diff --git a/api/src/main/java/market/guess/model/event/CreateEventRequest.java b/api/src/main/java/market/guess/model/event/CreateEventRequest.java
new file mode 100644
index 0000000..bac4cad
--- /dev/null
+++ b/api/src/main/java/market/guess/model/event/CreateEventRequest.java
@@ -0,0 +1,16 @@
+package market.guess.model.event;
+
+import java.math.BigDecimal;
+import java.util.List;
+
+public record CreateEventRequest(
+    String name,
+    String description,
+    MechanismType mechanism,
+    int commissionPercent,
+    CommissionTiming commissionTiming,
+    String mmUserName,
+    Integer liquidityB,
+    BigDecimal baseValueD,
+    List<String> options,
+    boolean allowMinting) {}
diff --git a/api/src/main/java/market/guess/model/event/EventDetailDTO.java b/api/src/main/java/market/guess/model/event/EventDetailDTO.java
index f5c4edf..1d2e415 100644
--- a/api/src/main/java/market/guess/model/event/EventDetailDTO.java
+++ b/api/src/main/java/market/guess/model/event/EventDetailDTO.java
@@ -2,10 +2,13 @@ package market.guess.model.event;
 
 import java.util.List;
 import market.guess.model.market.MarketStateDTO;
+import market.guess.model.market.OrderBookDTO;
 import market.guess.model.market.TradeRowDTO;
 
 public record EventDetailDTO(
     EventSummaryDTO summary,
     MarketStateDTO state,
     List<TradeRowDTO> history,
-    String settledMarket) {}
+    String settledMarket,
+    List<OrderBookDTO> orderBooks,
+    List<ParticipantDTO> participants) {}
diff --git a/api/src/main/java/market/guess/model/event/EventSummaryDTO.java b/api/src/main/java/market/guess/model/event/EventSummaryDTO.java
index 42762c2..d62b7b3 100644
--- a/api/src/main/java/market/guess/model/event/EventSummaryDTO.java
+++ b/api/src/main/java/market/guess/model/event/EventSummaryDTO.java
@@ -12,4 +12,5 @@ public record EventSummaryDTO(
     MechanismType mechanism,
     EventStatus status,
     List<String> optionNames,
-    String accountBalance) {}
+    String accountBalance,
+    String marketMaker) {}
diff --git a/api/src/main/java/market/guess/model/event/ParticipantDTO.java b/api/src/main/java/market/guess/model/event/ParticipantDTO.java
new file mode 100644
index 0000000..3b15c89
--- /dev/null
+++ b/api/src/main/java/market/guess/model/event/ParticipantDTO.java
@@ -0,0 +1,10 @@
+package market.guess.model.event;
+
+public record ParticipantDTO(
+    String user,
+    String tag,
+    int yes,
+    int no,
+    String value,
+    String fees,
+    String pnl) {}
diff --git a/api/src/main/java/market/guess/model/market/BookOrderDTO.java b/api/src/main/java/market/guess/model/market/BookOrderDTO.java
new file mode 100644
index 0000000..9656f44
--- /dev/null
+++ b/api/src/main/java/market/guess/model/market/BookOrderDTO.java
@@ -0,0 +1,8 @@
+package market.guess.model.market;
+
+public record BookOrderDTO(
+    String side,
+    String user,
+    long quantity,
+    String price,
+    boolean isBid) {}
diff --git a/api/src/main/java/market/guess/model/market/OrderBookDTO.java b/api/src/main/java/market/guess/model/market/OrderBookDTO.java
new file mode 100644
index 0000000..be0355e
--- /dev/null
+++ b/api/src/main/java/market/guess/model/market/OrderBookDTO.java
@@ -0,0 +1,11 @@
+package market.guess.model.market;
+
+import java.util.List;
+
+public record OrderBookDTO(
+    String optionKey,
+    String optionName,
+    String bestBid,
+    String bestAsk,
+    String spread,
+    List<BookOrderDTO> orders) {}