package cmd

import (
	"bufio"
	"fmt"
	"os"
	"strings"

	"github.com/fatih/color"
	"github.com/spf13/cobra"
	"gmgauthier.com/grokkit/config"
	"gmgauthier.com/grokkit/internal/grok"
)

var scaffoldCmd = &cobra.Command{
	Use:   "scaffold [path]",
	Short: "Scaffold a new file with Grok (safe preview + confirmation)",
	Long:  `Generate a new file from a description. Shows preview and requires explicit confirmation before writing.`,
	Run:   runScaffold,
}

var scaffoldDescription string // set by agent mode when calling from chat --agent

func init() {
	scaffoldCmd.Flags().String("description", "", "Scaffold description (used internally by agent mode)")
	rootCmd.AddCommand(scaffoldCmd)
}

func runScaffold(cmd *cobra.Command, args []string) {
	if len(args) == 0 {
		color.Red("Usage: grokkit scaffold <path>")
		return
	}
	path := args[0]

	// If agent mode passed a description, use it directly
	var description string
	if scaffoldDescription != "" {
		description = scaffoldDescription
		color.Cyan("Agent description: %s", description)
	} else {
		// Normal interactive mode
		color.Yellow("Enter description for %s: ", path)
		scanner := bufio.NewScanner(os.Stdin)
		if scanner.Scan() {
			description = strings.TrimSpace(scanner.Text())
		}
		if description == "" {
			color.Yellow("No description provided.")
			return
		}
	}

	client := grok.NewClient()
	messages := buildScaffoldMessages(path, description)

	color.Yellow("Asking Grok to scaffold %s...", path)
	scaffolded := client.Stream(messages, config.GetModel("scaffold", ""))

	// Show preview
	color.Cyan("\n--- Proposed content for %s ---\n%s\n--------------------------------", path, scaffolded)

	var confirm string
	color.Yellow("Create %s with this content? (y/n): ", path)
	fmt.Scanln(&confirm)

	if confirm != "y" && confirm != "Y" {
		color.Yellow("Aborted.")
		return
	}

	if err := os.WriteFile(path, []byte(scaffolded), 0644); err != nil {
		color.Red("Failed to write file: %v", err)
		return
	}

	color.Green("✅ Successfully scaffolded %s", path)
}

// buildScaffoldMessages is kept unchanged from original
func buildScaffoldMessages(path, description string) []map[string]string {
	return []map[string]string{
		{
			"role":    "system",
			"content": "You are an expert programmer. Generate a complete, well-structured file based on the user's description. Return ONLY the full file content. Do not include any explanations or markdown fences.",
		},
		{
			"role":    "user",
			"content": fmt.Sprintf("Path: %s\n\nDescription: %s", path, description),
		},
	}
}