#!/bin/bash

set -e

CMDS='git go gofmt goimports misspell'
STAGED_GO_FILES=$(git diff --cached --name-only -- '*.go')

f_echo_stderr() {
  echo $@ >&2
}

f_exit_success() {
  [ x"$@" != "x" ] && f_echo_stderr $@ || exit 0
}
trap f_exit_success EXIT

f_check_cmds() {
  for cmd in ${CMDS}; do
    which ${cmd} &>/dev/null || f_exit_success "couldn't find ${cmd}, skipping"
  done
}

f_check_cmds

if [[ $STAGED_GO_FILES != "" ]]; then
  f_echo_stderr "[pre-commit] fmt'ing staged files..."
  for file in $STAGED_GO_FILES; do
    if [[ $file =~ vendor/ ]] || [[ $file =~ tests/mocks/ ]] || [[ $file =~ \.pb\.go ]]; then
      continue
    fi

    gofmt -w -s $file
    misspell -w $file
    goimports -w -local github.com/cosmos/cosmos-sdk $file
    git add $file

  done
fi

# Run go mod tidy
go mod tidy && git add go.mod go.sum
