#!/bin/bash

# go get -u github.com/kisielk/errcheck
# go get -u github.com/golang/lint/golint
# go get -u honnef.co/go/simple/cmd/gosimple
# go get -u honnef.co/go/unused/cmd/unused
# go get -u github.com/mdempsky/unconvert
# go get -u github.com/client9/misspell/cmd/misspell
# go get -u github.com/gordonklaus/ineffassign
# go get -u github.com/fzipp/gocyclo

FILES=$(ls *.go)

echo "Checking gofmt..."
fmtRes=$(gofmt -l -s -d $FILES)
if [ -n "${fmtRes}" ]; then
  echo "gofmt checking failed: ${fmtRes}"
  exit 255
fi

echo "Checking errcheck..."
# buffer.WriteString always returns nil error; panics if buffer too large
errRes=$(errcheck -blank -ignore 'Write[String|Rune|Byte],os:Close')
# TODO: add -asserts flag (maybe)
if [ $? -ne 0 ]; then
  echo "errcheck checking failed: ${errRes}!"
  exit 255
fi
if [ -n "${errRes}" ]; then
  echo "errcheck checking failed: ${errRes}"
  exit 255
fi

echo "Checking govet..."
go vet $FILES
if [ $? -ne 0 ]; then
  exit 255
fi

echo "Checking govet -shadow..."
for path in $FILES; do
  go tool vet -shadow ${path}
  if [ $? -ne 0 ]; then
    exit 255
  fi
done

echo "Checking golint..."
lintError=0
for path in $FILES; do
  lintRes=$(golint ${path})
  if [ -n "${lintRes}" ]; then
    echo "golint checking ${path} failed: ${lintRes}"
    lintError=1
  fi
done

if [ ${lintError} -ne 0 ]; then
  exit 255
fi

echo "Checking gosimple..."
gosimpleRes=$(gosimple .)
if [ $? -ne 0 ]; then
  echo "gosimple checking failed: ${gosimpleRes}!"
  exit 255
fi
if [ -n "${gosimpleRes}" ]; then
  echo "gosimple checking failed: ${gosimpleRes}"
  exit 255
fi

echo "Checking unused..."
unusedRes=$(unused .)
if [ $? -ne 0 ]; then
  echo "unused checking failed: ${unusedRes}!"
  exit 255
fi
if [ -n "${unusedRes}" ]; then
  echo "unused checking failed: ${unusedRes}"
  exit 255
fi

echo "Checking unconvert..."
unconvertRes=$(unconvert .)
if [ $? -ne 0 ]; then
  echo "unconvert checking failed: ${unconvertRes}!"
  exit 255
fi
if [ -n "${unconvertRes}" ]; then
  echo "unconvert checking failed: ${unconvertRes}"
  exit 255
fi

echo "Checking misspell..."
misspellRes=$(misspell $FILES)
if [ $? -ne 0 ]; then
  echo "misspell checking failed: ${misspellRes}!"
  exit 255
fi
if [ -n "${misspellRes}" ]; then
  echo "misspell checking failed: ${misspellRes}"
  exit 255
fi

echo "Checking ineffassign..."
ineffassignRes=$(ineffassign -n .)
if [ $? -ne 0 ]; then
  echo "ineffassign checking failed: ${ineffassignRes}!"
  exit 255
fi
if [ -n "${ineffassignRes}" ]; then
  echo "ineffassign checking failed: ${ineffassignRes}"
  exit 255
fi

echo "Checking gocyclo..."
gocycloRes=$(gocyclo -over 20 $FILES)
if [ -n "${gocycloRes}" ]; then
  echo "gocyclo warning: ${gocycloRes}"
fi

echo "Running tests..."
if [ -f cover.out ]; then
  rm cover.out
fi

go test -timeout 3m --race -cpu 1
if [ $? -ne 0 ]; then
  exit 255
fi

go test -timeout 3m --race -cpu 2
if [ $? -ne 0 ]; then
  exit 255
fi

go test -timeout 3m --race -cpu 4
if [ $? -ne 0 ]; then
  exit 255
fi

go test -timeout 3m -coverprofile cover.out
if [ $? -ne 0 ]; then
  exit 255
fi

echo "Success"