package cli

import (
	"fmt"
	"os"
	"strings"
	"github.com/spf13/cobra"
)

var config = LoadConfig()
var store, storeError = InitializeStore()

func checkStore() {
	if storeError != nil {
		fmt.Fprintf(os.Stderr, "Error establishing connection to store: %v\n", storeError)
		os.Exit(1)
	}
}

var rootCmd = &cobra.Command{
	Use:   "lm",
	Short: "Interact with Large Language Models",
	Long:  `lm is a CLI tool to interact with OpenAI's GPT 3.5 and GPT 4.`,
	Run: func(cmd *cobra.Command, args []string) {
		checkStore()
		// execute `lm ls` by default
	},
}

var lsCmd = &cobra.Command{
	Use:   "ls",
	Short: "List existing conversations",
	Long:  `List all existing conversations in descending order of recent activity.`,
	Run: func(cmd *cobra.Command, args []string) {
		fmt.Println("Listing conversations...")
		// Example output, asterisk to indicate current converation

		// $ lm ls
		// last hour:
		//   98sg - 12 minutes ago - Project discussion
		// last day:
		//   tj3l - 10 hours ago - Deep learning concepts
		// last week:
		//   bwfm - 2 days ago - Machine learning study
		// * 8n3h - 3 days ago - Weekend plans
		//   f3n7 - 6 days ago - CLI development
		// last month:
		//   5hn2 - 8 days ago - Book club discussion
		//   b7ze - 20 days ago - Gardening tips and tricks
		// last 6 months:
		//   3jn2 - 30 days ago - Web development best practices
		//   43jk - 2 months ago - Longboard maintenance
		//   g8d9 - 3 months ago - History book club
		//   4lk3 - 4 months ago - Local events and meetups
		//   43jn - 6 months ago - Mobile photography techniques
	},
}

var msgCmd = &cobra.Command{
	Use:   "msg",
	Short: "Send a message to active conversation",
	Long:  `Send a message to the active conversation and receive a message from the LLM in return.`,
	Run: func(cmd *cobra.Command, args []string) {
		fmt.Println("Sending message to active conversation...")
		// If no messsage provided via args, we should open an editor ala `git commit`
		// After submitting the message, the
	},
}

var viewCmd = &cobra.Command{
	Use:   "view",
	Short: "View messages in a conversation",
	Long:  `Displays all the messages in a coversation.`,
	Run: func(cmd *cobra.Command, args []string) {
		fmt.Println("Displaying conversation messages...")
	},
}

var newCmd = &cobra.Command{
	Use:   "new",
	Short: "Start a new conversation",
	Long: `Start a new conversation with the Large Language Model.`,
	Run: func(cmd *cobra.Command, args []string) {
		messageContents, err := InputFromEditor("# What would you like to say?", "message.*.md")
		if err != nil {
			fmt.Fprintf(os.Stderr, "Error receiving message input: %v\n", err)
			os.Exit(1)
		}

		if messageContents == "" {
			fmt.Fprintf(os.Stderr, "No message was provided.\n")
			os.Exit(1)
		}

		fmt.Printf("> %s\n", messageContents)

		messages := []Message{
			{
				OriginalContent: messageContents,
				Role: "user",
			},
		}

		err = CreateChatCompletionStream("You are a helpful assistant.", messages, os.Stdout)
		if err != nil {
			fmt.Fprintf(os.Stderr, "An error occured: %v\n", err)
			os.Exit(1)
		}

		fmt.Println()
	},
}

var promptCmd = &cobra.Command{
	Use: "prompt",
	Short: "Do a one-shot prompt",
	Long: `Prompt the Large Language Model and get a response.`,
	Run: func(cmd *cobra.Command, args []string) {
		messages := []Message{
			{
				OriginalContent: strings.Join(args, " "),
				Role: "user",
			},
		}

		err := CreateChatCompletionStream("You are a helpful assistant.", messages, os.Stdout)
		if err != nil {
			fmt.Fprintf(os.Stderr, "An error occured: %v\n", err)
			os.Exit(1)
		}

		fmt.Println()
	},
}

func NewRootCmd() *cobra.Command {
	rootCmd.AddCommand(newCmd, promptCmd)
	return rootCmd;
}