def main():
  return [
      pipeline('linux-amd64', 'linux', 'amd64'),
      pipeline('linux-arm64', 'linux', 'arm64'),
      pipeline('linux-arm', 'linux', 'arm'),
      manifest(),
  ]

# defines a pipeline step that builds and publishes a docker
# image to a docker remote registry.
def docker_step(name, os, arch):
    repo = 'drone/%s' % name
    if repo == 'server':
      repo = 'drone/drone'
    return {
        'name': 'publish_%s' % name,
        'image': 'plugins/docker',
        'settings': {
            'repo': repo,
            'auto_tag': True,
            'auto_tag_suffix': '%s-%s' % (os, arch),
            'username': 'drone',
            'password': { 'from_secret': 'docker_password' },
            'dockerfile': 'docker/Dockerfile.%s.%s.%s' % (name, os, arch),
        },
        'when': {
            'event': [ 'push', 'tag' ],
        },
    }


# defines a pipeline step that creates and publishes
# a docker manifest to a docker remote registry.
def manifest_step(name):
    return {
        'name': 'publish_%s' % name,
        'image': 'plugins/manifest:1',
        'settings': {
            'auto_tag': True,
            'ignore_missing': True,
            'spec': 'docker/manifest.%s.tmpl' % name,
            'username': 'drone',
            'password': { 'from_secret': 'docker_password' },
        },
        'when': {
            'event': [ 'push', 'tag' ],
        },
    }

# defines a pipeline step that executes the Go unit tests.
# this will also download dependencies and cache in /go
def test_step():
    return {
        'name': 'test',
        'image': 'golang:1.11',
        'commands': [
            'go test ./...',
        ],
    }

# defines a pipeline step that executes the Go unit tests.
# this will also download dependencies and cache in /go
def build_step(os, arch):
  return {
    'name': 'build',
    'image': 'golang:1.11',
    'commands': [
        'go build -ldflags \"-extldflags \\\\\"-static\\\\\"\" -o release/%s/%s/drone-server github.com/drone/drone/cmd/drone-server' % (os, arch),
        'CGO_ENABLED=0 go build -o release/%s/%s/drone-agent github.com/drone/drone/cmd/drone-agent' % (os, arch),
        'CGO_ENABLED=0 go build -o release/%s/%s/drone-controller github.com/drone/drone/cmd/drone-controller' % (os, arch),
    ]
  }

# defines a pipeline that builds, tests and publishes
# docker images for the Drone agent, server and controller.
def pipeline(name, os, arch):
    return {
        'kind': 'pipeline',
        'name': 'default',
        'platform': {
            'os': os,
            'arch': arch,
        },
        'steps': [
            test_step(),
            build_step(os, arch),
            docker_step('drone', os, arch),
            docker_step('agent', os, arch),
            docker_step('controller', os, arch),
        ],
    }

# defines a pipeline that updates the docker manifest
# for the architecture-specific images previously published
# to dockerhub.
def manifest():
    return {
        'kind': 'pipeline',
        'name': 'manifest',
        'steps': [
            manifest_step('server'),
            manifest_step('agent'),
            manifest_step('controller'),
        ],
        'depends_on': [
            'linux-amd64',
            'linux-arm64',
            'linux-arm',
        ],
    }