From ac0be988ea5795409495702ca6054af2737028b3 Mon Sep 17 00:00:00 2001
From: cubercsl <2014cais01@gmail.com>
Date: Thu, 16 Dec 2021 18:12:29 +0800
Subject: [PATCH] ci: add pre-commit-hook

---
 .github/workflows/deploy.yml      | 21 +++++++++++++++++++++
 .github/workflows/merge_check.yml | 10 ++++++++++
 package.json                      |  5 ++++-
 scripts/pre-commit                | 27 +++++++++++++++++++++++++++
 scripts/validate                  | 21 +++++++++++++++++++--
 5 files changed, 81 insertions(+), 3 deletions(-)
 create mode 100755 scripts/pre-commit

diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 2aa7c5f7..43cbbdf4 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -15,12 +15,33 @@ jobs:
       uses: actions/setup-node@main
       with: 
         node-version: '15.x'
+    - name: Set up Python 3.9
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.9
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install PyYAML jsonschema
+    - name: Validate yml files
+      run: |
+        python ./scripts/validate
     - name: Assemble yml files
       run: |
         mkdir -p public/conference && cd public/conference
         awk 1 `find ../../conference -name '*.yml' -not -path '**/types.yml'` > allconf.yml
         cp ../../conference/types.yml .
         cd ../..
+    - name: Get yarn cache directory path
+      id: yarn-cache-dir-path
+      run: echo "::set-output name=dir::$(yarn cache dir)"
+    - uses: actions/cache@v2
+      id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
+      with:
+        path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+        key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-yarn-
     - name: Install dependency and build
       run: |
         yarn install
diff --git a/.github/workflows/merge_check.yml b/.github/workflows/merge_check.yml
index ca485389..ba2c839d 100644
--- a/.github/workflows/merge_check.yml
+++ b/.github/workflows/merge_check.yml
@@ -32,6 +32,16 @@ jobs:
         cat `find ../../conference -name '*.yml' -not -path '**/types.yml'` > allconf.yml
         cp ../../conference/types.yml .
         cd ../..
+    - name: Get yarn cache directory path
+      id: yarn-cache-dir-path
+      run: echo "::set-output name=dir::$(yarn cache dir)"
+    - uses: actions/cache@v2
+      id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
+      with:
+        path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+        key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-yarn-
     - name: Install dependency and build
       run: |
         yarn install
diff --git a/package.json b/package.json
index f303e2f7..9a4c08ef 100644
--- a/package.json
+++ b/package.json
@@ -45,5 +45,8 @@
     "> 1%",
     "last 2 versions",
     "not dead"
-  ]
+  ],
+  "gitHooks": {
+    "pre-commit": "scripts/pre-commit"
+  }
 }
diff --git a/scripts/pre-commit b/scripts/pre-commit
new file mode 100755
index 00000000..855d2b48
--- /dev/null
+++ b/scripts/pre-commit
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+command_exists () {
+  command -v "$1" >/dev/null 2>&1
+}
+
+
+python_module_exists () {
+    /usr/bin/env python -c "import $1" >/dev/null 2>&1 
+}
+
+command_exists python || {
+    echo
+    echo "No python found, skip pre-commit hook."
+    echo
+    exit 0
+}
+
+python_module_exists yaml && python_module_exists jsonschema || {
+    echo
+    echo "To run pre-commit hook, please install the following modules."
+    echo "\$ pip install PyYAML jsonschema"
+    echo
+    exit 0
+}
+
+exec "`dirname -- "$0"`/validate" $@
diff --git a/scripts/validate b/scripts/validate
index 74fc7ec9..1428dc4b 100755
--- a/scripts/validate
+++ b/scripts/validate
@@ -1,12 +1,20 @@
 #!/usr/bin/env python
 
+"""
+pre-commit hook to check conference yml files
+
+To use it normally as git pre-commit hook,
+make a symlink and install dependencies:
+$ ln -s ../../scripts/validate .git/hooks/pre-commit
+$ pip install PyYAML jsonschema
+"""
+
 import os
 import sys
 
 from io import StringIO
 from unittest import TestCase, TestLoader, TextTestRunner
 
-
 import jsonschema
 import jsonschema.exceptions
 
@@ -55,7 +63,16 @@ def run_test(testcase, msg):
         sys.exit(1)
 
 
+def usage():
+    print(__doc__)
+
+
 if __name__ == '__main__':
+
+    if '-h' in sys.argv or '--help' in sys.argv:
+        usage()
+        sys.exit(0)
+
     load_conference_yaml_schema()
     run_test(ConferenceTest,
-             msg=('\033[1;31mThere are {0} error(s) inside repo. Please fix the errors and commit again\033[m.'))
+             msg=('\033[1;31mThere are {0} error(s) inside repo. Please fix the errors and commit again.\033[m'))