Initial commit

2026-03-26 22:46:03 +01:00
commit 18e0e04700
80 changed files with 13114 additions and 0 deletions
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+module.exports = (sequelize) => {
+    const { User, Group, FriendRequest, Friendship } = sequelize.models;
+
+    // User <-> Group: Many-to-Many
+    // A User can be in many Groups, and a Group can have many Users (members).
+    const UserGroup = sequelize.define('UserGroup', {}, { timestamps: false });
+    User.belongsToMany(Group, { through: UserGroup, foreignKey: 'userId' });
+    Group.belongsToMany(User, { through: UserGroup, as: 'members', foreignKey: 'groupId' });
+
+    // Friendship is a direct link between two users.
+    // user1Id will always be less than user2Id to ensure uniqueness.
+    Friendship.belongsTo(User, { as: 'user1', foreignKey: 'user1Id' });
+    Friendship.belongsTo(User, { as: 'user2', foreignKey: 'user2Id' });
+
+    // User <-> FriendRequest: One-to-Many
+    // A User can send many friend requests and receive many friend requests.
+    User.hasMany(FriendRequest, { as: 'sentRequests', foreignKey: 'fromUserId', onDelete: 'CASCADE' });
+    User.hasMany(FriendRequest, { as: 'receivedRequests', foreignKey: 'toUserId', onDelete: 'CASCADE' });
+    FriendRequest.belongsTo(User, { as: 'fromUser', foreignKey: 'fromUserId' });
+    FriendRequest.belongsTo(User, { as: 'toUser', foreignKey: 'toUserId' });
+};