chore: Move to Typescript (#2783)

This PR moves the entire project to Typescript. Due to the ~1000 ignores this will lead to a messy codebase for a while, but the churn is worth it – all of those ignore comments are places that were never type-safe previously.

closes #1282

server/models/Group.ts

@@ -0,0 +1,96 @@
+import { CollectionGroup, GroupUser } from "@server/models";
+import { Op, DataTypes, sequelize } from "../sequelize";
+
+const Group = sequelize.define(
+  "group",
+  {
+    id: {
+      type: DataTypes.UUID,
+      defaultValue: DataTypes.UUIDV4,
+      primaryKey: true,
+    },
+    teamId: {
+      type: DataTypes.UUID,
+      defaultValue: DataTypes.UUIDV4,
+    },
+    name: {
+      type: DataTypes.STRING,
+      allowNull: false,
+    },
+  },
+  {
+    timestamps: true,
+    paranoid: true,
+    validate: {
+      isUniqueNameInTeam: async function () {
+        const foundItem = await Group.findOne({
+          where: {
+            teamId: this.teamId,
+            name: {
+              [Op.iLike]: this.name,
+            },
+            id: {
+              [Op.not]: this.id,
+            },
+          },
+        });
+
+        if (foundItem) {
+          throw new Error("The name of this group is already in use");
+        }
+      },
+    },
+  }
+);
+
+// @ts-expect-error ts-migrate(7006) FIXME: Parameter 'models' implicitly has an 'any' type.
+Group.associate = (models) => {
+  Group.hasMany(models.GroupUser, {
+    as: "groupMemberships",
+    foreignKey: "groupId",
+  });
+  Group.hasMany(models.CollectionGroup, {
+    as: "collectionGroupMemberships",
+    foreignKey: "groupId",
+  });
+  Group.belongsTo(models.Team, {
+    as: "team",
+    foreignKey: "teamId",
+  });
+  Group.belongsTo(models.User, {
+    as: "createdBy",
+    foreignKey: "createdById",
+  });
+  Group.belongsToMany(models.User, {
+    as: "users",
+    through: models.GroupUser,
+    foreignKey: "groupId",
+  });
+  Group.addScope("defaultScope", {
+    include: [
+      {
+        association: "groupMemberships",
+        required: false,
+      },
+    ],
+    order: [["name", "ASC"]],
+  });
+};
+
+// Cascade deletes to group and collection relations
+// @ts-expect-error ts-migrate(7006) FIXME: Parameter 'group' implicitly has an 'any' type.
+Group.addHook("afterDestroy", async (group, options) => {
+  if (!group.deletedAt) return;
+  await GroupUser.destroy({
+    where: {
+      groupId: group.id,
+    },
+  });
+  await CollectionGroup.destroy({
+    where: {
+      groupId: group.id,
+    },
+  });
+});
+
+export default Group;