From cc744382aea28aa48cad40198c4bf155aedf2216 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A1nos=20Veres?= <janos@dot.industries>
Date: Sat, 23 Mar 2024 13:20:07 +0100
Subject: [PATCH] feat: allow access to remote state

---
 packages/ogre/src/commit.test.ts | 18 +++++++++++++++++-
 packages/ogre/src/commit.ts      | 14 +++++++-------
 packages/ogre/src/repository.ts  | 14 ++++++++++++++
 3 files changed, 38 insertions(+), 8 deletions(-)

diff --git a/packages/ogre/src/commit.test.ts b/packages/ogre/src/commit.test.ts
index 9c07de4..a7b9225 100644
--- a/packages/ogre/src/commit.test.ts
+++ b/packages/ogre/src/commit.test.ts
@@ -2,12 +2,13 @@ import { test } from "tap";
 
 import {
   addOneStep,
+  ComplexObject,
   getBaseline,
   sumChanges,
   testAuthor,
   updateHeaderData,
 } from "./test.utils";
-import { printChangeLog } from "./repository";
+import { printChangeLog, Repository } from "./repository";
 
 test("baseline with 1 commit and zero changelog entries", async (t) => {
   const [repo] = await getBaseline();
@@ -23,6 +24,21 @@ test("head points to main", async (t) => {
   t.equal(repo.head(), "refs/heads/main", "head not pointing where it should");
 });
 
+test("changes are available for commit if starting from empty", async (t) => {
+  const repo = new Repository<ComplexObject>({}, {});
+  repo.data.name = "some data";
+
+  const dirty = repo.status();
+
+  t.equal(
+    dirty.length,
+    1,
+    "Status does not contain the right amount of changes",
+  );
+  await repo.commit("baseline", testAuthor);
+  t.pass();
+});
+
 test("no commit without changes", async (t) => {
   const [repo] = await getBaseline();
 
diff --git a/packages/ogre/src/commit.ts b/packages/ogre/src/commit.ts
index 58e0afe..2ed3c58 100644
--- a/packages/ogre/src/commit.ts
+++ b/packages/ogre/src/commit.ts
@@ -2,13 +2,13 @@ import { digest } from "./hash";
 import { Operation } from "fast-json-patch";
 
 export interface Commit {
-  // The hash of the commit
-  // Is an sha256 of:
-  // - tree object reference (changes?)
-  // - parent object reference (parent hash)
-  // - author
-  // - author commit timestamp with timezone
-  // - commit message
+  /*The hash of the commit. Is an sha256 of:
+          - tree object reference (changes?)
+          - parent object reference (parent hash)
+          - author
+          - author commit timestamp with timezone
+          - commit message
+        */
   hash: string;
   tree: string;
 
diff --git a/packages/ogre/src/repository.ts b/packages/ogre/src/repository.ts
index 5c55d0e..9187f4a 100644
--- a/packages/ogre/src/repository.ts
+++ b/packages/ogre/src/repository.ts
@@ -80,6 +80,11 @@ export interface RepositoryObject<T extends { [k: string]: any }> {
    * @param shaish
    */
   reset(mode?: "soft" | "hard", shaish?: string): void;
+
+  /**
+   * Returns the remote references from the initialization of the repository
+   */
+  remote(): Map<string, Reference> | undefined;
 }
 
 /**
@@ -89,6 +94,8 @@ export class Repository<T extends { [k: PropertyKey]: any }>
   implements RepositoryObject<T>
 {
   constructor(obj: Partial<T>, options: RepositoryOptions<T>) {
+    // FIXME: move this to refs/remote as git would do?
+    this.remoteRefs = options.history?.refs;
     this.original = deepClone(obj);
     // store js ref, so obj can still be modified without going through repo.data
     this.data = obj as T;
@@ -120,11 +127,18 @@ export class Repository<T extends { [k: PropertyKey]: any }>
 
   data: T;
 
+  // stores the remote state upon initialization
+  private readonly remoteRefs: Map<string, Reference> | undefined;
+
   private observer: Observer<T>;
 
   private readonly refs: Map<string, Reference>;
   private readonly commits: Commit[];
 
+  remote(): Map<string, Reference> | undefined {
+    return this.remoteRefs;
+  }
+
   private moveTo(commit: Commit) {
     const targetTree = treeToObject(commit.tree);
     const patchToTarget = compare(this.data, targetTree);