Add pre-commit hook and task to automatically install it (#408)

* Add pre-commit hook and task to install it
* Update pre-commit
Co-authored-by: Nicola Corti <corti.nico@gmail.com>

Author: vbuberen

build.gradle

@@ -64,7 +64,14 @@ allprojects {
     }
 }
 
+task installGitHook(type: Copy) {
+    from new File(rootProject.rootDir, 'pre-commit')
+    into { new File(rootProject.rootDir, '.git/hooks') }
+    fileMode 0777
+}
+
 task clean(type: Delete) {
+    dependsOn(installGitHook)
     delete rootProject.buildDir
 }
 

pre-commit

@@ -0,0 +1,20 @@
+#!/bin/bash
+echo "Running pre-commit checks..."
+
+OUTPUT="/tmp/analysis-result"
+./gradlew detekt ktlintCheck > ${OUTPUT}
+EXIT_CODE=$?
+if [ ${EXIT_CODE} -ne 0 ]; then
+    cat ${OUTPUT}
+    rm ${OUTPUT}
+    echo "*********************************************"
+    echo "               Checks Failed!                "
+    echo "    Resolve found issues before committing   "
+    echo "*********************************************"
+    exit ${EXIT_CODE}
+else
+    rm ${OUTPUT}
+    echo "*********************************************"
+    echo "          Checks Passed Successfully!        "
+    echo "*********************************************"
+fi