// Copyright 2019 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//go:build !nodeploy
// +build !nodeploy

package commands

import (
	"context"

	"github.com/gohugoio/hugo/deploy"
	"github.com/spf13/cobra"
)

var _ cmder = (*deployCmd)(nil)

// deployCmd supports deploying sites to Cloud providers.
type deployCmd struct {
	*baseBuilderCmd

	invalidateCDN bool
	maxDeletes    int
	workers       int
}

// TODO: In addition to the "deploy" command, consider adding a "--deploy"
// flag for the default command; this would build the site and then deploy it.
// It's not obvious how to do this; would all of the deploy-specific flags
// have to exist at the top level as well?

// TODO:  The output files change every time "hugo" is executed, it looks
// like because of map order randomization. This means that you can
// run "hugo && hugo deploy" again and again and upload new stuff every time. Is
// this intended?

func (b *commandsBuilder) newDeployCmd() *deployCmd {
	cc := &deployCmd{}

	cmd := &cobra.Command{
		Use:   "deploy",
		Short: "Deploy your site to a Cloud provider.",
		Long: `Deploy your site to a Cloud provider.

See https://gohugo.io/hosting-and-deployment/hugo-deploy/ for detailed
documentation.
`,

		RunE: func(cmd *cobra.Command, args []string) error {
			cfgInit := func(c *commandeer) error {
				c.Set("invalidateCDN", cc.invalidateCDN)
				c.Set("maxDeletes", cc.maxDeletes)
				c.Set("workers", cc.workers)
				return nil
			}
			comm, err := initializeConfig(true, true, false, &cc.hugoBuilderCommon, cc, cfgInit)
			if err != nil {
				return err
			}
			deployer, err := deploy.New(comm.Cfg, comm.hugo().PathSpec.PublishFs)
			if err != nil {
				return err
			}
			return deployer.Deploy(context.Background())
		},
	}

	cmd.Flags().String("target", "", "target deployment from deployments section in config file; defaults to the first one")
	cmd.Flags().Bool("confirm", false, "ask for confirmation before making changes to the target")
	cmd.Flags().Bool("dryRun", false, "dry run")
	cmd.Flags().Bool("force", false, "force upload of all files")
	cmd.Flags().BoolVar(&cc.invalidateCDN, "invalidateCDN", true, "invalidate the CDN cache listed in the deployment target")
	cmd.Flags().IntVar(&cc.maxDeletes, "maxDeletes", 256, "maximum # of files to delete, or -1 to disable")
	cmd.Flags().IntVar(&cc.workers, "workers", 10, "number of workers to transfer files. defaults to 10")

	cc.baseBuilderCmd = b.newBuilderBasicCmd(cmd)

	return cc
}
