# Copyright 2019 The Periph Authors. All rights reserved.
# Use of this source code is governed under the Apache License, Version 2.0
# that can be found in the LICENSE file.

os: linux
dist: bionic
language: go
go_import_path: periph.io/x/periph

jobs:
  include:
  - go: 1.14.x
    cache:
      directories:
      - $GOPATH/pkg/mod
      # Cache tools sources.
      #- $GOPATH/src/golang\.org
    before_script:
    - echo $TRAVIS_GO_VERSION
    - go get -t -v periph.io/x/periph/...
    - >
      go get -u -v
      golang.org/x/tools/go/analysis/passes/shadow/cmd/shadow
    script:
    - >
      echo 'Looking for external dependencies:';
      go list -f '{{join .Imports "\n"}}' periph.io/x/periph/... | sort | uniq | grep -v ^periph.io/x/periph | xargs go list -f '{{if not .Standard}}- {{.ImportPath}}{{end}}'
    - >
      echo 'Erroring on external dependencies:';
      ! go list -f '{{join .Imports "\n"}}' periph.io/x/periph/... | sort | uniq | grep -v ^periph.io/x/periph | xargs go list -f '{{if not .Standard}}Remove {{.ImportPath}}{{end}}' | grep -q Remove
    - >
      echo 'Erroring on /host depending on /devices:';
      ! go list -f '{{.ImportPath}} depends on {{join .Imports ", "}}' periph.io/x/periph/host/... | sort | uniq | grep periph.io/x/periph/devices
    - >
      echo 'Erroring on /conn depending on /devices:';
      ! go list -f '{{.ImportPath}} depends on {{join .Imports ", "}}' periph.io/x/periph/conn/... | sort | uniq | grep periph.io/x/periph/devices
    - >
      echo 'Erroring on /conn depending on /host:';
      ! go list -f '{{.ImportPath}} depends on {{join .Imports ", "}}' periph.io/x/periph/conn/... | sort | uniq | grep periph.io/x/periph/host
    - >
      echo 'Erroring on shadowed variables:';
      ! go vet -vettool=$(which shadow) ./... |& grep -v '"err"' | grep -e '^[^#]'