#!/bin/sh

# Git pre-push hook for the Lantern project
# Maintainer: Ulysses Aalto <uaalto@getlantern.org>
#
# Installation: Copy into .git/hooks/pre-push


# Exit immediately if a command exits with a non-zero status.
set -e

# Find only modified files/directories
MODIFIED_DIRS=$(git status --porcelain | \
                        awk 'match($1, "M") && match($2, "src/github.com/getlantern/*"){print $2}' | \
                        sed 's+src/github.com/getlantern/++g' | \
                        sed 's+/.*++' | \
                        uniq)
echo "Running hook -- Analyzing modified packages..."
for i in $MODIFIED_DIRS; do
    echo " * $i";
done
echo

cd src/github.com/getlantern

which errcheck >/dev/null || (echo "Unable to find errcheck, please install it: \`go get github.com/kisielk/errcheck\`" && exit 1)
which golint >/dev/null || (echo "Unable to find golint, please install it: \`go get -u github.com/golang/lint/golint\`" && exit 1)

echo "*** Running \033[0;34mErrcheck\033[0m ***" && \
for dir in $MODIFIED_DIRS; do
  errcheck github.com/getlantern/$dir || (\
    echo "\033[0;31merrcheck returned error analyzing the package '$dir'\033[0m" && \
    echo "Please, fix and run again\n" && \
    exit 1)
done
echo "\033[1;34mErrcheck\033[0m ran successfully\n"

echo "*** Running \033[0;34mGo vet\033[0m ***" && \
for dir in $MODIFIED_DIRS; do
  go vet github.com/getlantern/$dir || (\
    echo "\033[0;31mgo vet returned error analyzing the package '$dir'\033[0m"
    echo "Please, fix and run again\n" && \
    exit 1)
done
echo "\033[1;34mGo vet\033[0m ran successfully\n"

echo "*** Running \033[0;34mGolint\033[0m ***" && \
for dir in $MODIFIED_DIRS; do
  golint github.com/getlantern/$dir || (\
    echo "\033[0;31mgo vet returned error analyzing the package '$dir'\033[0m"
    echo "Please, fix and run again\n" && \
    exit 1)
done
echo "\033[1;34mGolint\033[0m ran successfully\n"

echo "*** Running \033[0;34mGo test -race\033[0m ***" && \
for dir in $MODIFIED_DIRS; do
  go test -race github.com/getlantern/$dir || (\
    echo "\033[0;31mgo vet returned error analyzing the package '$dir'\033[0m"
    echo "Please, fix and run again\n" && \
    exit 1)
done
echo "\033[1;34mGo test -race\033[0m ran successfully\n"
