package cmd

import (
	"fmt"
	"os"

	"git.jnss.me/joakim/opal/internal/engine"
	"github.com/spf13/cobra"
)

var infoCmd = &cobra.Command{
	Use:   "info [filter...]",
	Short: "Show detailed information about a task",
	Long: `Display all details about a specific task.

Examples:
  opal info 2              # Show details for task with display ID 2
  opal 2 info              # Flexible syntax (same as above)
  opal info +urgent        # Show details if only one task matches`,
	Run: func(cmd *cobra.Command, args []string) {
		parsed := getParsedArgs(cmd)
		if err := showTaskInfo(parsed.Filters); err != nil {
			fmt.Fprintf(os.Stderr, "Error: %v\n", err)
			os.Exit(1)
		}
	},
}

func showTaskInfo(args []string) error {
	// Validate we have a filter
	if len(args) == 0 {
		return fmt.Errorf("no task specified for info command")
	}

	// Parse filter
	filter, err := engine.ParseFilter(args)
	if err != nil {
		return fmt.Errorf("failed to parse filter: %w", err)
	}

	// Load working set to resolve IDs
	ws, err := engine.LoadWorkingSet()
	if err != nil {
		return fmt.Errorf("failed to load working set: %w", err)
	}

	// Resolve task
	var task *engine.Task

	if len(filter.IDs) > 0 {
		// Resolve display ID (should be exactly one)
		if len(filter.IDs) != 1 {
			return fmt.Errorf("info requires exactly one task (specified %d IDs)", len(filter.IDs))
		}
		task, err = ws.GetTaskByDisplayID(filter.IDs[0])
		if err != nil {
			return err
		}
	} else {
		// Use filter to get tasks
		tasks, err := engine.GetTasks(filter)
		if err != nil {
			return fmt.Errorf("failed to get tasks: %w", err)
		}

		if len(tasks) == 0 {
			return fmt.Errorf("no task found matching filter")
		}
		if len(tasks) > 1 {
			return fmt.Errorf("info requires exactly one task (filter matched %d tasks)", len(tasks))
		}

		task = tasks[0]
	}

	// Display detailed info
	fmt.Println(engine.FormatTaskDetail(task))

	return nil
}