package cmd

import (
	"fmt"

	cmdutil "git.mlow.ca/mlow/lmcli/pkg/cmd/util"
	"git.mlow.ca/mlow/lmcli/pkg/lmcli"
	"git.mlow.ca/mlow/lmcli/pkg/lmcli/model"
	"github.com/spf13/cobra"
)

func ReplyCmd(ctx *lmcli.Context) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "reply <conversation> [message]",
		Short: "Reply to a conversation",
		Long:  `Sends a reply to conversation and writes the response to stdout.`,
		Args: func(cmd *cobra.Command, args []string) error {
			argCount := 1
			if err := cobra.MinimumNArgs(argCount)(cmd, args); err != nil {
				return err
			}
			return nil
		},
		RunE: func(cmd *cobra.Command, args []string) error {
			shortName := args[0]
			conversation := cmdutil.LookupConversation(ctx, shortName)

			reply := inputFromArgsOrEditor(args[1:], "# How would you like to reply?\n", "")
			if reply == "" {
				return fmt.Errorf("No reply was provided.")
			}

			cmdutil.HandleConversationReply(ctx, conversation, true, model.Message{
				ConversationID:  conversation.ID,
				Role:            model.MessageRoleUser,
				Content: reply,
			})
			return nil
		},
		ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
			compMode := cobra.ShellCompDirectiveNoFileComp
			if len(args) != 0 {
				return nil, compMode
			}
			return ctx.Store.ConversationShortNameCompletions(toComplete), compMode
		},
	}
	return cmd
}