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/tui"
	"git.mlow.ca/mlow/lmcli/pkg/tui/shared"
	"github.com/spf13/cobra"
)

func ChatCmd(ctx *lmcli.Context) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "chat [conversation]",
		Short: "Open the chat interface",
		Long:  `Open the chat interface, optionally on a given conversation.`,
		RunE: func(cmd *cobra.Command, args []string) error {
			err := validateGenerationFlags(ctx, cmd)
			if err != nil {
				return err
			}

			var opts []tui.LaunchOption

			list, err := cmd.Flags().GetBool("list")
			if err != nil {
				return err
			}

			if !list && len(args) == 1 {
				shortname := args[0]
				if shortname != ""{
					conv, err := cmdutil.LookupConversationE(ctx, shortname)
					if err != nil {
						return err
					}
					opts = append(opts, tui.WithInitialConversation(conv))
				}
			}

			if list {
				opts = append(opts, tui.WithInitialView(shared.ViewConversations))
			}

			err = tui.Launch(ctx, opts...)
			if err != nil {
				return fmt.Errorf("Error fetching LLM response: %v", err)
			}
			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.Conversations.ConversationShortNameCompletions(toComplete), compMode
		},
	}

	// -l, --list
	cmd.Flags().BoolP("list", "l", false, "View/manage conversations")

	applyGenerationFlags(ctx, cmd)
	return cmd
}