#!/bin/bash

set -e

# Setup: Add src directory to PATH and create isolated test directory
SRCDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../src" && pwd)"
export PATH="$SRCDIR:$PATH"

TESTDIR=$(mktemp -d)
trap "rm -rf '$TESTDIR'" EXIT

cd "$TESTDIR"


echo "=== Test: subgit save ==="

# Step 1: Create an upstream repository with an initial commit
mkdir -p upstream/repo1
cd upstream/repo1
git init
git config user.email "test@test.com"
git config user.name "Test User"
echo "test content" > file1.txt
git add file1.txt
git commit -m "Initial commit"
COMMIT1=$(git rev-parse HEAD)
cd "$TESTDIR"

# Step 2: Create parent repo and add upstream, pinned to specific commit
mkdir parent
cd parent
git init

subgit add -c "$COMMIT1" "$TESTDIR/upstream/repo1" subrepo1

# Verify the initial commit was recorded in .subgitrc
source .subgitrc
if [ "${subgitinfo[subrepo1/commit]}" != "$COMMIT1" ]; then
	echo "FAIL: initial commit not recorded correctly"
	exit 1
fi

# Step 3: Add a new commit to upstream repository
cd "$TESTDIR/upstream/repo1"
echo "new content" > file2.txt
git add file2.txt
git commit -m "Second commit"
COMMIT2=$(git rev-parse HEAD)

# Step 4: Fetch the new commit and update bare repo to point to it
cd "$TESTDIR/parent"
git -C .subgit/subrepo1 fetch
git -C .subgit/subrepo1 update-ref refs/heads/master refs/remotes/origin/master

# Step 5: Use 'subgit save' to update .subgitrc with the new commit
subgit save subrepo1

# Step 6: Verify that .subgitrc was updated with the new commit

# Check in-memory after sourcing
source .subgitrc
if [ "${subgitinfo[subrepo1/commit]}" != "$COMMIT2" ]; then
	echo "FAIL: save did not update commit (expected $COMMIT2, got ${subgitinfo[subrepo1/commit]})"
	exit 1
fi

# Check that file was actually written with new commit
if ! grep -q "$COMMIT2" .subgitrc; then
	echo "FAIL: .subgitrc does not contain new commit"
	exit 1
fi

echo "PASS: save test"