From fcee258207d3ae23ca9366a7c0d0145f6cd5036a Mon Sep 17 00:00:00 2001
From: Aravinth Manivannan <realaravinth@batsense.net>
Date: Mon, 13 Feb 2023 16:04:43 +0530
Subject: [PATCH] feat: migrate CI

---
 .gitignore            |   2 +
 .woodpecker.yml       |  12 ++++
 Makefile              |  25 +++++++
 scripts/ci.sh         | 120 ++++++++++++++++++++++++++++++++
 scripts/hugo.sh       | 155 ++++++++++++++++++++++++++++++++++++++++++
 scripts/lib.sh        |  32 +++++++++
 scripts/spellcheck.sh |  98 ++++++++++++++++++++++++++
 7 files changed, 444 insertions(+)
 create mode 100644 .woodpecker.yml
 create mode 100644 Makefile
 create mode 100755 scripts/ci.sh
 create mode 100755 scripts/hugo.sh
 create mode 100755 scripts/lib.sh
 create mode 100755 scripts/spellcheck.sh

diff --git a/.gitignore b/.gitignore
index 845fda8..3f9059b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,5 @@ node_modules
 public
 resources
 .hugo_build.lock
+sec
+tmp/
diff --git a/.woodpecker.yml b/.woodpecker.yml
new file mode 100644
index 0000000..ce6aa6d
--- /dev/null
+++ b/.woodpecker.yml
@@ -0,0 +1,12 @@
+pipeline:
+  build:
+    image: python
+    when:
+      event: [ push, pull_request, tag, deployment ]
+    commands:
+    - curl -fsSL https://deb.nodesource.com/setup_16.x | bash - &&\
+    - apt update && apt-get -y --no-install-recommends install nodejs tar gpg curl wget
+    - make env
+    - make
+    - make ci-deploy
+    secrets: [ GITEA_WRITE_DEPLOY_KEY, LIBREPAGES_DEPLOY_SECRET ]
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..418f9cd
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,25 @@
+default:
+	./scripts/hugo.sh build
+
+ci-deploy: ## Deploy from CI/CD. Only call from within CI
+	@if [ "${CI}" != "woodpecker" ]; \
+	then echo "Only call from within CI. Will re-write your local Git configuration. To override, set export CI=woodpecker"; \
+		 exit 1; \
+	fi
+	git config --global user.email "${CI_COMMIT_AUTHOR_EMAIL}"
+	git config --global user.name "${CI_COMMIT_AUTHOR}"
+	./scripts/hugo.sh deploy librepages public "${CI_COMMIT_AUTHOR} <${CI_COMMIT_AUTHOR_EMAIL}>"
+	./scripts/ci.sh --init "$$GITEA_WRITE_DEPLOY_KEY"
+	./scripts/ci.sh --deploy ${LIBREPAGES_DEPLOY_SECRET}  librepages
+	./scripts/ci.sh --clean
+
+env: ## Download build dependencies and setup dev environment
+	./scripts/hugo.sh install
+	npm run install
+	npm run build
+
+help: ## Prints help for targets with comments
+	@cat $(MAKEFILE_LIST) | grep -E '^[a-zA-Z_-]+:.*?## .*$$' | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
+
+serve:
+	./scripts/hugo.sh hugo server
diff --git a/scripts/ci.sh b/scripts/ci.sh
new file mode 100755
index 0000000..46f2229
--- /dev/null
+++ b/scripts/ci.sh
@@ -0,0 +1,120 @@
+#!/bin/bash
+# ci.sh: Helper script to automate deployment operations on CI/CD
+# Copyright © 2022 Aravinth Manivannan <realaravinth@batsense.net>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+set -xEeuo  pipefail
+#source $(pwd)/scripts/lib.sh
+
+readonly SSH_ID_FILE=/tmp/ci-ssh-id
+readonly SSH_REMOTE_NAME=origin-ssh
+
+match_arg() {
+    if [ $1 == $2 ] || [ $1 == $3 ]
+    then
+        return 0
+    else
+        return 1
+    fi
+}
+
+help() {
+	cat << EOF
+USAGE: ci.sh [SUBCOMMAND]
+Helper script to automate deployment operations on CI/CD
+
+Subcommands
+
+  -c  --clean	cleanup secrets, SSH key and other runtime data
+  -i  --init <SSH_PRIVATE_KEY>	initialize environment, write SSH private to file
+  -d  --deploy <PAGES-SECRET> <TARGET BRANCH>	push branch to Gitea and call Pages server
+  -h  --help	print this help menu
+EOF
+}
+
+# $1: SSH private key
+write_ssh(){
+	truncate --size 0 $SSH_ID_FILE
+	echo "$1" > $SSH_ID_FILE
+	chmod 600 $SSH_ID_FILE
+}
+
+set_ssh_remote() {
+	http_remote_url=$(git remote get-url origin)
+	remote_hostname=$(echo $http_remote_url | cut -d '/' -f 3)
+	repository_owner=$(echo $http_remote_url | cut -d '/' -f 4)
+	repository_name=$(echo $http_remote_url | cut -d '/' -f 5)
+	ssh_remote="git@$remote_hostname:$repository_owner/$repository_name"
+	ssh_remote="git@git.batsense.net:mCaptcha/website.git"
+	git remote add $SSH_REMOTE_NAME $ssh_remote
+}
+
+clean() {
+	if [ -f $SSH_ID_FILE ]
+	then
+		shred $SSH_ID_FILE
+		rm $SSH_ID_FILE
+	fi
+}
+
+# $1: Pages API secret
+# $2: Deployment target branch
+deploy() {
+	if (( "$#" < 2 ))
+	then
+		help
+	else
+		git -c core.sshCommand="/usr/bin/ssh -oStrictHostKeyChecking=no -i $SSH_ID_FILE"\
+			push --force  $SSH_REMOTE_NAME $2
+		curl -vv --location --request \
+			POST "https://deploy.batsense.net/api/v1/update"\
+			--header 'Content-Type: application/json' \
+			--data-raw "{ \"secret\": \"$1\", \"branch\": \"$2\" }"
+	fi
+}
+
+if (( "$#" < 1 ))
+then
+	help
+	exit -1
+fi
+
+
+if match_arg $1 '-i' '--init'
+then
+	if (( "$#" < 2 ))
+	then
+		help
+		exit -1
+	fi
+	set_ssh_remote
+	write_ssh "$2"
+elif match_arg $1 '-c' '--clean'
+then
+	clean
+elif match_arg $1 '-d' '--deploy'
+then
+	if (( "$#" < 3 ))
+	then
+		help
+		exit -1
+	fi
+	deploy $2 $3
+elif match_arg $1 '-h' '--help'
+then
+	help
+else
+	help
+fi
diff --git a/scripts/hugo.sh b/scripts/hugo.sh
new file mode 100755
index 0000000..a1ad2aa
--- /dev/null
+++ b/scripts/hugo.sh
@@ -0,0 +1,155 @@
+#!/bin/bash
+# Used in CI workflow: install hugo binary from GitHub
+# Copyright © 2021 Aravinth Manivannan <realaravinth@batsense.net>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+set -euo pipefail
+
+readonly PROJECT_ROOT=$(pwd)
+readonly TARBALL=hugo.tar.gz
+readonly SOURCE="https://github.com/gohugoio/hugo/releases/download/v0.110.0/hugo_0.110.0_linux-amd64.tar.gz"
+
+readonly BIN_PATH=tmp/bin
+readonly BIN=$BIN_PATH/hugo
+
+readonly DIST=public
+
+source $(pwd)/scripts/lib.sh
+
+help() {
+	cat << EOF
+hugo.sh: hugo build script
+USAGE:
+    hugo.sh <options>
+OPTIONS:
+  b   build     build website
+  c   clean     clean dependencies and build artifacts
+  d   deploy    deploy build to branch
+  h   help      print this help menu
+  i   install   install build dependencies
+  u   url       make urls relative
+  z   hugo      invoke hugo
+EOF
+}
+
+download() {
+	if [ ! -e $BIN_PATH ];
+	then
+		mkdir -p $BIN_PATH
+		cd $BIN_PATH
+		echo "[*] Downloading Hugo"
+		wget --quiet --output-document=$TARBALL $SOURCE
+		tar -xvzf $TARBALL > /dev/null
+		rm $TARBALL
+		echo "[*] Downloaded hugo into $BIN"
+		cd $PROJECT_ROOT
+	fi
+}
+
+init() {
+	if [ ! -d $BIN_PATH ]
+	then
+		mkdir $BIN_PATH
+	fi
+
+	if [ ! -f $BIN ]
+	then
+		cd $BIN_PATH
+		download
+	fi
+}
+
+run() {
+	$BIN "${@:1}"
+}
+
+build() {
+	run
+}
+
+no_absolute_url() {
+	sed -i 's/https:\/\/mcaptcha.org//g' $(find public -type f | grep html)
+}
+
+clean() {
+	rm -rf $BIN_PATH || true
+	rm -rf $DIST || true
+	echo "[*] Workspace cleaned"
+}
+
+# $1: branch name
+# $2: directory containing build assets
+# $3: Author in <author-name author@example.com> format
+deploy() {
+	cd $PROJECT_ROOT
+	original_branch=$(git branch --show-current)
+	tmp_dir=$(mktemp -d)
+	cp -r $2/* $tmp_dir
+
+	if [[ -z $(git ls-remote --heads origin ${1}) ]]
+	then
+		echo "[*] Creating deployment branch $1"
+		git checkout --orphan $1
+	else
+		echo "[*] Deployment branch $1 exists, pulling changes from remote"
+		git fetch origin $1
+		git switch $1
+	fi
+
+	git rm -rf .
+	/bin/rm -rf *
+	cp -r $tmp_dir/* .
+	git add --all
+	if [ $(git status --porcelain | xargs | sed '/^$/d' | wc -l) -gt 0 ];
+	then
+		echo "[*] Repository has changed, committing changes"
+		git commit \
+			--author="$3" \
+			--message="new deploy: $(date --iso-8601=seconds)"
+	fi
+	git checkout $original_branch
+}
+
+check_arg $1
+download
+
+if match_arg $1 'c' 'clean'
+then
+	clean
+elif match_arg $1 'i' 'install'
+then
+	init
+elif match_arg $1 'd' 'deploy'
+then
+	check_arg $2
+	check_arg $3
+	check_arg $4
+	deploy $2 $3 $4
+elif match_arg $1 'b' 'build'
+then
+	build
+elif match_arg $1 'h' 'help'
+then
+	help
+elif match_arg $1 'z' 'hugo'
+then
+	hugo "${@:3}"
+else
+	echo "Error: $1 is not an option"
+	help
+	exit 1
+fi
+
+exit 0
diff --git a/scripts/lib.sh b/scripts/lib.sh
new file mode 100755
index 0000000..da0b409
--- /dev/null
+++ b/scripts/lib.sh
@@ -0,0 +1,32 @@
+#!/bin/bash
+# Copyright © 2021 Aravinth Manivannan <realaravinth@batsense.net>
+# 
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+# 
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+check_arg(){
+    if [ -z $1 ]
+    then
+        help
+        exit 1
+    fi
+}
+
+match_arg() {
+    if [ $1 == $2 ] || [ $1 == $3 ]
+    then
+        return 0
+    else
+        return 1
+    fi
+}
diff --git a/scripts/spellcheck.sh b/scripts/spellcheck.sh
new file mode 100755
index 0000000..06674e4
--- /dev/null
+++ b/scripts/spellcheck.sh
@@ -0,0 +1,98 @@
+#!/bin/bash
+# Used in CI workflow: install and check for spelling errors
+# Copyright © 2021 Aravinth Manivannan <realaravinth@batsense.net>
+# 
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+# 
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+readonly MISSPELL_DOWNLOAD="https://github.com/client9/misspell/releases/download/v0.3.4/misspell_0.3.4_linux_64bit.tar.gz"
+readonly TMP_DIR=$(pwd)/tmp
+readonly PROJECT_ROOT=$(pwd)
+readonly MISSPELL_TARBALL="$TMP_DIR/misspell.tar.bz2"
+readonly MISSPELL="$TMP_DIR/misspell"
+
+set -Eeuo pipefail
+
+source $(pwd)/scripts/lib.sh
+
+FLAGS=""
+
+help() {
+	cat << EOF
+spellcheck.sh: Check for spelling errors
+USAGE:
+    spellcheck.sh <options>
+OPTIONS:
+  c    --check   check for spelling erros
+  h    --help    print this help menu
+  w    --write   check and fix spelling errors
+EOF
+}
+
+
+
+download() {
+	if [ ! -e $MISSPELL ]; 
+	then 
+		echo "[*] Downloading misspell"
+		wget --quiet  --output-doc=$MISSPELL_TARBALL $MISSPELL_DOWNLOAD;
+		cd $TMP_DIR
+		tar -xf $MISSPELL_TARBALL;
+		cd $PROJECT_ROOT
+		pip install codespell
+	else
+		echo "[*] Found misspell"
+	fi
+}
+
+spell_check_codespell() {
+	_check(){
+		codespell $FLAGS $PROJECT_ROOT/$1 #|| true
+	}
+	_check README.md
+	_check contents
+}
+
+spell_check_misspell() {
+	mkdir $TMP_DIR || true
+	download
+
+	_check(){
+		$MISSPELL $FLAGS $PROJECT_ROOT/$1
+	}
+
+	_check contents
+	_check README.md
+}
+
+check_arg $1
+
+if match_arg $1 'w' '--write'
+then
+	echo "[*] checking and correcting spellings"
+	FLAGS="-w"
+	spell_check_misspell
+	spell_check_codespell
+elif match_arg $1 'c' '--check'
+then
+	echo "[*] checking spellings"
+	spell_check_misspell
+	spell_check_codespell
+elif match_arg $1 'h' '--help'
+then
+	help
+else
+	echo "undefined option"
+	help
+	exit 1
+fi