From 0de97ea8ffc52a38cbc086f1ac4672e6c4efec01 Mon Sep 17 00:00:00 2001
From: r-jb <24355753+r-jb@users.noreply.github.com>
Date: Sun, 21 Jan 2024 21:47:29 +0100
Subject: [PATCH] Initial commit

---
 .github/workflows/main.yml |  34 +++++++
 LICENSE                    |  21 +++++
 README.md                  |  24 +++++
 list.txt                   |   8 ++
 main.sh                    | 184 +++++++++++++++++++++++++++++++++++++
 5 files changed, 271 insertions(+)
 create mode 100644 .github/workflows/main.yml
 create mode 100644 LICENSE
 create mode 100644 README.md
 create mode 100644 list.txt
 create mode 100755 main.sh

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..ff81247
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,34 @@
+name: Update Archives
+
+on:
+  workflow_dispatch:
+    inputs:
+      to_software_heritage:
+        description: "Upload to Software Heritage"
+        default: "true"
+        required: false
+  schedule:
+    - cron: "0 5 * * *" # Everyday at 05:00 AM
+  push:
+    branches:
+      - "main"
+    paths:
+      - "list.txt"
+
+jobs:
+  update:
+    permissions:
+      contents: write
+    name: Update Archives
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Overwrite options
+        if: github.event_name == 'workflow_dispatch' && (github.event.inputs.to_software_heritage == 'true' || github.event.inputs.to_software_heritage == 'false')
+        run: sed --in-place "s|^SOFTWARE_HERITAGE='.*'|SOFTWARE_HERITAGE='${{ github.event.inputs.to_software_heritage }}'|g" main.sh
+
+      - run: ./main.sh
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..6ba98bd
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2024 r-jb
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..791bad7
--- /dev/null
+++ b/README.md
@@ -0,0 +1,24 @@
+# CodeStreisand
+
+This project is for automatically archiving Git repositories using GitHub Actions. It creates a [bundle](https://git-scm.com/docs/git-bundle) for each repository in a list, and hosts them in a separate branch.
+
+See this [demo](https://github.com/r-jb/CodeStreisand/tree/archive).
+
+## Features
+
+- Backup repositories to a GitHub repository
+- Automatically update the archived repos
+- Supports posting to the [Software Heritage](https://www.softwareheritage.org/)
+
+## Usage
+
+> [!TIP]  
+> If you want to host your archives privately, you can also import this repo using [GitHub Importer](https://docs.github.com/en/migrations/importing-source-code/using-github-importer/importing-a-repository-with-github-importer#importing-a-repository-with-github-importer)
+
+1. Fork this repository
+2. Edit [`list.txt`](list.txt) with the URLs of the repositories you want to archive, one per line
+3. Trigger the manual run by going to `Actions` -> `Update Archives` -> `Run Workflow`
+4. (Optional) Change the update schedule in [`main.yml`](.github/workflows/main.yml)
+
+> [!NOTE]  
+> The results are stored in the `archive` branch by default
diff --git a/list.txt b/list.txt
new file mode 100644
index 0000000..97b3731
--- /dev/null
+++ b/list.txt
@@ -0,0 +1,8 @@
+# Haier vs Andre0512
+https://github.com/Andre0512/hon
+https://github.com/Andre0512/pyhOn
+https://github.com/Andre0512/hon-test-data
+
+# Misc
+https://github.com/yt-dlp/yt-dlp
+https://github.com/jsavargas/zspotify
\ No newline at end of file
diff --git a/main.sh b/main.sh
new file mode 100755
index 0000000..a74d230
--- /dev/null
+++ b/main.sh
@@ -0,0 +1,184 @@
+#!/usr/bin/env bash
+
+ARCHIVE_BRANCH='archive'
+SOFTWARE_HERITAGE='true'
+
+init_git() {
+	git config --global user.name 'github-actions[bot]'
+	git config --global user.email 'github-actions[bot]@users.noreply.github.com'
+	git checkout --orphan "$ARCHIVE_BRANCH"
+	find . -not -name '*.bundle' -not -name './.git' -not -path './.git' -not -path './.git/*' -exec git rm -rf "{}" \;
+	git pull origin "$ARCHIVE_BRANCH"
+}
+
+repo_exist_not_empty() {
+	local url ref
+	url="$1"
+	ref="$2"
+
+	(git ls-remote --quiet --exit-code --heads "$url" | grep --max-count 1 "refs/heads/$ref") &>/dev/null
+	return $?
+}
+
+is_comment() {
+	if [[ "$1" =~ ^\s*[#](.*)$ ]]; then
+		return 0
+	else
+		return 1
+	fi
+}
+
+url_exist() {
+	http_code="$(curl --silent --output /dev/null --write-out "%{http_code}\n" "$1")"
+	if [ "$http_code" = '200' ]; then
+		return 0
+	else
+		return 1
+	fi
+}
+
+# Usage: add_to_readme <url> <name>
+add_to_readme() {
+	local repo_url repo_name
+	repo_url="$1"
+	repo_name="$2"
+
+	# If no readme
+	if [ ! -s README.md ]; then
+		echo -e '# CodeStreisand
+
+<details><summary>How to restore</summary>
+
+## General instructions
+
+1. Clone the `archive` branch
+
+```bash
+git clone --branch archive https://github.com/your-username/your-repo codestreisand
+```
+
+2. Restore from bundle
+
+```bash
+git clone codestreisand/FILE.bundle
+```
+
+## Download only a specific backup
+
+```bash
+git clone --no-checkout --depth=1 --no-tags --branch archive https://github.com/your-username/your-repo codestreisand
+git -C codestreisand restore --staged FILE.bundle
+git -C codestreisand checkout FILE.bundle
+git clone codestreisand/FILE.bundle
+```
+
+</details>
+
+| Status | Name | Software Heritage | Last Update |
+| - | - | - | - |' >>README.md
+	fi
+
+	# Check Software Heritage
+	software_heritage_md='Not available'
+	if url_exist "$repo_url"; then
+		software_heritage_md="[Link](https://archive.softwareheritage.org/browse/origin/directory/?origin_url=$repo_url)"
+	fi
+
+	# If not in readme
+	if ! grep --silent "$repo_url" README.md; then
+		current_date="$(date '+%d/%m/%Y')"
+		if url_exist "$repo_url"; then
+			echo "| 🟩 | [$repo_name]($repo_url) | $software_heritage_md | $current_date |" >>README.md
+		elif [ -s "$repo_name.bundle" ]; then
+			echo "| 🟨 | [$repo_name]($repo_url) | $software_heritage_md | $current_date |" >>README.md
+		else
+			echo "| 🟥 | [$repo_name]($repo_url) | $software_heritage_md | never |" >>README.md
+		fi
+	fi
+}
+
+# Usage: update_repo_date <repo url>
+update_repo_date() {
+	local repo_url
+	repo_url="$1"
+
+	current_date="$(date '+%d/%m/%Y')"
+	awk --assign url="$repo_url" --assign date="$current_date" 'BEGIN {FS=OFS="|"} $3 ~ url {$5=" "date" "} 1' README.md >README.md.temp && mv --force README.md.temp README.md
+}
+
+# Usage: set_repo_status <repo url> <repo name>
+set_repo_status() {
+	local repo_url repo_name color
+	repo_url="$1"
+	repo_name="$2"
+	color=''
+
+	if url_exist "$1"; then
+		color='🟩'
+	elif [ -s "$2.bundle" ]; then
+		color='🟨'
+	else
+		color='🟥'
+	fi
+
+	awk --assign url="$repo_url" --assign status="$color" 'BEGIN {FS=OFS="|"} $3 ~ url {$2=" "status" "} 1' README.md >README.md.temp && mv --force README.md.temp README.md
+	[ "$repo_name" = 'test-repo' ] && cat README.md
+}
+
+# Usage: commit_and_push <repo name>
+commit_and_push() {
+	local repo_name
+	repo_name="$1"
+
+	git add README.md
+	git add "$repo_name.bundle" >/dev/null 2>&1
+	git commit --message="Update $repo_name" >/dev/null 2>&1
+	git push origin "$ARCHIVE_BRANCH" >/dev/null 2>&1
+}
+
+list="$(cat list.txt)"
+init_git
+while IFS= read -r entry; do
+	if [ -n "$entry" ] && ! is_comment "$entry"; then
+		repo_name="$(basename "$entry")"
+		echo -e "\n\n---------------------------- Archiving ${repo_name}... ----------------------------\n\n"
+
+		# Save the current bundle hash
+		current_hash=''
+		if [ -s "$repo_name.bundle" ]; then
+			current_hash="$(sha256sum "$repo_name.bundle" | awk '{print $1}')"
+		fi
+
+		# Create a bundle
+		if repo_exist_not_empty "$entry"; then
+			git clone --mirror --recursive -j8 "$entry" "$repo_name"
+			git -C "$repo_name" bundle create "../$repo_name.bundle" --all
+			rm -rf "$repo_name"
+		fi
+
+		add_to_readme "$entry" "$repo_name"
+		set_repo_status "$entry" "$repo_name"
+
+		# Save the new bundle hash
+		new_hash='default_value'
+		if [ -s "$repo_name.bundle" ]; then
+			new_hash="$(sha256sum "$repo_name.bundle" | awk '{print $1}')"
+		fi
+
+		# If the bundle changed
+		if [ "$new_hash" != "$current_hash" ]; then
+
+			# If a the bundle was updated
+			if [ "$new_hash" != 'default_value' ]; then
+				update_repo_date "$entry"
+			fi
+
+			# Post to Software Heritage
+			if [ "$SOFTWARE_HERITAGE" = 'true' ]; then
+				response="$(curl --request POST "https://archive.softwareheritage.org/api/1/origin/save/git/url/$entry/" | jq --raw-output .save_request_status)"
+				echo "Software Heritage: $response"
+			fi
+		fi
+		commit_and_push "$repo_name"
+	fi
+done <<<"$list"