feat: add assignRole() method to MemberApi (#423)

Co-authored-by: Gregor MacLennan <[email protected]>

src/capabilities.js

@@ -280,11 +280,27 @@ export class Capabilities {
     if (!ownCapabilities.roleAssignment.includes(roleId)) {
       throw new Error('No capability to assign role ' + roleId)
     }
-    await this.#dataType[kCreateWithDocId](deviceId, {
-      schemaName: 'role',
-      roleId,
-      fromIndex,
-    })
+
+    const existingRoleDoc = await this.#dataType
+      .getByDocId(deviceId)
+      .catch(() => null)
+
+    if (existingRoleDoc) {
+      await this.#dataType.update(
+        [existingRoleDoc.versionId, ...existingRoleDoc.forks],
+        {
+          schemaName: 'role',
+          roleId,
+          fromIndex,
+        }
+      )
+    } else {
+      await this.#dataType[kCreateWithDocId](deviceId, {
+        schemaName: 'role',
+        roleId,
+        fromIndex,
+      })
+    }
   }
 
   async #isProjectCreator() {

src/mapeo-project.js

@@ -46,10 +46,10 @@ const CORESTORE_STORAGE_FOLDER_NAME = 'corestore'
 const INDEXER_STORAGE_FOLDER_NAME = 'indexer'
 export const kCoreManager = Symbol('coreManager')
 export const kCoreOwnership = Symbol('coreOwnership')
-export const kCapabilities = Symbol('capabilities')
 export const kSetOwnDeviceInfo = Symbol('kSetOwnDeviceInfo')
 export const kBlobStore = Symbol('blobStore')
 export const kProjectReplicate = Symbol('replicate project')
+export const kDataTypes = Symbol('dataTypes')
 const EMPTY_PROJECT_SETTINGS = Object.freeze({})
 
 /**
@@ -349,10 +349,10 @@ export class MapeoProject extends TypedEmitter {
   }
 
   /**
-   * Capabilities instance, used for tests
+   * DataTypes object mappings, used for tests
    */
-  get [kCapabilities]() {
-    return this.#capabilities
+  get [kDataTypes]() {
+    return this.#dataTypes
   }
 
   get [kBlobStore]() {

src/member-api.js

@@ -160,4 +160,13 @@ export class MemberApi extends TypedEmitter {
       })
     )
   }
+
+  /**
+   * @param {string} deviceId
+   * @param {import('./capabilities.js').RoleId} roleId
+   * @returns {Promise<void>}
+   */
+  async assignRole(deviceId, roleId) {
+    return this.#capabilities.assignRole(deviceId, roleId)
+  }
 }