// Copyright © 2017-2018 Mikael Berthe <mikael@lilotux.net>

//

// Licensed under the MIT license.

// Please see the LICENSE file is this directory.

package cmd

import (

	"strings"

	"github.com/pkg/errors"

	"github.com/spf13/cobra"

	flag "github.com/spf13/pflag"

	"github.com/spf13/viper"

	"github.com/McKael/madon"

)

// toot is a kind of alias for status post

var tootAliasFlags *flag.FlagSet

func init() {

	RootCmd.AddCommand(tootAliasCmd)

	tootAliasCmd.Flags().BoolVar(&statusOpts.sensitive, "sensitive", false, "Mark post as sensitive (NSFW)")

	tootAliasCmd.Flags().StringVar(&statusOpts.visibility, "visibility", "", "Visibility (direct|private|unlisted|public)")

	tootAliasCmd.Flags().StringVar(&statusOpts.spoiler, "spoiler", "", "Spoiler warning (CW)")

	tootAliasCmd.Flags().StringVar(&statusOpts.mediaIDs, "media-ids", "", "Comma-separated list of media IDs")

	tootAliasCmd.Flags().StringVarP(&statusOpts.mediaFilePath, "file", "f", "", "Media attachment file name")

	tootAliasCmd.Flags().StringVar(&statusOpts.textFilePath, "text-file", "", "Text file name (message content)")

	tootAliasCmd.Flags().Int64VarP(&statusOpts.inReplyToID, "in-reply-to", "r", 0, "Status ID to reply to")

	tootAliasCmd.Flags().BoolVar(&statusOpts.stdin, "stdin", false, "Read message content from standard input")

	tootAliasCmd.Flags().BoolVar(&statusOpts.addMentions, "add-mentions", false, "Add mentions when replying")

	tootAliasCmd.Flags().BoolVar(&statusOpts.sameVisibility, "same-visibility", false, "Use same visibility as original message (for replies)")

	// Flag completion

	annotation := make(map[string][]string)

	annotation[cobra.BashCompCustom] = []string{"__madonctl_visibility"}

	tootAliasCmd.Flags().Lookup("visibility").Annotations = annotation

	// This one will be used to check if the options were explicitly set or not

	tootAliasFlags = tootAliasCmd.Flags()

}

var tootAliasCmd = &cobra.Command{

	Use:     "toot",

	Aliases: []string{"post", "pouet"},

	Short:   "Post a message (toot)",

	Example: `  madonctl toot message

  madonctl toot --spoiler Warning "Hello, World"

  madonctl status post --media-ids ID1,ID2 "Here are the photos"

  madonctl post --sensitive --file image.jpg Image

  madonctl toot --text-file message.txt

  madonctl toot --in-reply-to STATUSID "@user response"

  madonctl toot --in-reply-to STATUSID --add-mentions "response"

  echo "Hello from #madonctl" | madonctl toot --visibility unlisted --stdin

The default visibility can be set in the configuration file with the option

'default_visibility' (or with an environmnent variable).`,

	RunE: func(cmd *cobra.Command, args []string) error {

		if err := madonInit(true); err != nil {

			return err

		}

		return statusSubcommandRunE("post", args)

	},

}

func toot(tootText string) (*madon.Status, error) {

	opt := statusOpts

	// Get default visibility from configuration

	if opt.visibility == "" {

		if v := viper.GetString("default_visibility"); v != "" {

			opt.visibility = v

		}

	}

	switch opt.visibility {

	case "", "direct", "private", "unlisted", "public":

		// OK

	default:

		return nil, errors.Errorf("invalid visibility argument value '%s'", opt.visibility)

	}

	if opt.inReplyToID < 0 {

		return nil, errors.New("invalid in-reply-to argument value")

	}

	ids, err := splitIDs(opt.mediaIDs)

	if err != nil {

		return nil, errors.New("cannot parse media IDs")

	}

	if tootText == "" && len(ids) == 0 && opt.spoiler == "" && opt.mediaFilePath == "" {

		return nil, errors.New("toot is empty")

	}

	if opt.inReplyToID > 0 {

		var initialStatus *madon.Status

		var preserveVis bool

		if opt.sameVisibility &&

			!tootAliasFlags.Lookup("visibility").Changed &&

			!statusPostFlags.Lookup("visibility").Changed {

			// Preserve visibility unless the --visibility flag

			// has been used in the command line.

			preserveVis = true

		}

		if preserveVis || opt.addMentions {

			// Fetch original status message

			initialStatus, err = gClient.GetStatus(opt.inReplyToID)

			if err != nil {

				return nil, errors.Wrap(err, "cannot get original message")

			}

		}

		if preserveVis {

			v := initialStatus.Visibility

			// We do not set public visibility unless explicitly requested

			if v == "public" {

				opt.visibility = "unlisted"

			} else {

				opt.visibility = v

			}

		}

		if opt.addMentions {

			mentions, err := mentionsList(initialStatus)

			if err != nil {

				return nil, err

			}

			tootText = mentions + tootText

		}

	}

	// Uploading media file last

	if opt.mediaFilePath != "" {

		if len(ids) > 3 {

			return nil, errors.New("too many media attachments")

		}

		fileMediaID, err := uploadFile(opt.mediaFilePath)

		if err != nil {

			return nil, errors.Wrap(err, "cannot attach media file")

		}

		if fileMediaID > 0 {

			ids = append(ids, fileMediaID)

		}

	}

	return gClient.PostStatus(tootText, opt.inReplyToID, ids, opt.sensitive, opt.spoiler, opt.visibility)

}

func mentionsList(s *madon.Status) (string, error) {

	a, err := gClient.GetCurrentAccount()

	if err != nil {

		return "", errors.Wrap(err, "cannot check account details")

	}

	var mentions []string

	// Add the sender if she is not the connected user

	if s.Account.Acct != a.Acct {

		mentions = append(mentions, "@"+s.Account.Acct)

	}

	for _, m := range s.Mentions {

		if m.Acct != a.Acct {

			mentions = append(mentions, "@"+m.Acct)

		}

	}

	mentionsStr := strings.Join(mentions, " ")

	if len(mentionsStr) > 0 {

		return mentionsStr + " ", nil

	}

	return "", nil

}